MITSUBISHI INVERTER MULTI-SPLIT SYSTEM SCM80ZA ERROR CODE

(OUTDOOR UNIT) 

SCM80ZA 

(INDOOR UNIT) 

SKM22ZA SRRM40ZA 

SKM25ZA 

SKM28ZA 

SKM32ZA 

SKM40ZA 

SKM50ZA

Indoor unit indicator

RUN lamp = 1 time flash 

TIMER lamp =  Comes on

Outdoor unit indicator (LED5) = Stays off 

Description of trouble = Indoor heat exchanger thermistor error

Cause = Broken heat exchanger thermistor wire, Connector poor connection

Conditions of flashing = When heat exchanger thermistor temperature of –20 °C or under continued for more than 3   seconds   while   operation   is   stopped. (This is not displayed during operation.) 

Indoor unit indicator

RUN lamp = 2 time flash

TIMER lamp =  Comes on

Outdoor unit indicator (LED5) = Stays off 

Description of trouble = Room temperature thermistor error

Cause = Broken room temperature thermistor wire, Connector poor connection

Conditions of flashing = When room temperature thermistor temperature of –20 °C or under continued for more than 3   seconds while operation is stopped. (This is not displayed during operation.) 

Indoor unit indicator

RUN lamp = 5 time flash

TIMER lamp =  Comes on

Outdoor unit indicator (LED5) = Stays off 

Description of trouble = Drain abnormality (1) 

Cause = Drain at reverse gradient, Float switch defective 

Conditions of flashing = Float switch motion 

Indoor unit indicator

RUN lamp = 6 time flash

TIMER lamp =  Comes on

Outdoor unit indicator (LED5) = Stays off 

Description of trouble = Indoor fan motor error (2)

Cause = Defective fan motor, Connector poor connection 

Conditions of flashing = When air conditioner is operating and indoor fan motor is turned ON, indoor fan motor speed of 400  rpm or under continued for more  than 30 seconds.  (Air   conditioner stops.)

Indoor unit indicator

RUN lamp = Keeps flashing 

TIMER lamp =  1 time flash

Outdoor unit indicator (LED5) = Stays off 

Description of trouble = Outdoor temperature thermistor error

Cause = Broken outdoor thermistor wire, Poor connector connection

Conditions of flashing = When outdoor temperature sensor temperature of –40 °C or under continued for more than 3 seconds   while opeation is stopped. (This is not displayed during operation.) 

Indoor unit indicator

RUN lamp = Keeps flashing

TIMER lamp = 2 time flash

Outdoor unit indicator (LED5) = Stays off

Description of trouble = Outdoor heat exchanger gas pipe thermistor error

Cause = Broken heat exchanger gas pipe termistor wire, Poor connector connection 

Conditions of flashing = When heat exchanger entrance thermistor  temperature of  –50 °C or under continued for more than   3 seconds while operation is stopped. (This is not displayed during operation.)

Indoor unit indicator

RUN lamp = Comes on 

TIMER lamp = 1 time flash

Outdoor unit indicator (LED5) = 1 time flash

Description of trouble = Current cut

Cause = Compressor locking, Open phase on compressor output, Short circuit on power transformer

Conditions of flashing = When converter output current which exceeds setting value is detected. (Compressor stops.)

Indoor unit indicator

RUN lamp = Comes on

TIMER lamp = 2 time flash

Outdoor unit indicator (LED5) = 2 time flash

Description of trouble = Trouble of outdoor unit

Cause = Broken power transformer, Broken compressor wire, Compressor blockage

Conditions of flashing = When the input current of 1 A or less is detected for 30 continuous seconds or more. (Compressor stops.) 

Indoor unit indicator

RUN lamp = Comes on

TIMER lamp = 2 time flash

Outdoor unit indicator (LED5) = On for 4 seconds and off for 4 seconds

Description of trouble = Discharge pipe thermistor error

Cause = Broken discharge pipe thermistor wire, Connector poor connection 

Conditions of flashing = When the discharge pipe thermistor temperature measures an interrupted signal (less than 7 °C) of 10 seconds or more.

Indoor unit indicator

RUN lamp = Comes on

TIMER lamp = 3 time flash

Outdoor unit indicator (LED5) = 3 time flash

Description of trouble = Over current

Cause = Overload operation, Overcharge 

Conditions of flashing = When the input current value exceeds the set value. (Compressor stops)

Indoor unit indicator

RUN lamp = Comes on 

TIMER lamp = 4 time flash

Outdoor unit indicator (LED5) = 4 time flash

Description of trouble = Over heat of  power transistor

Cause = Cooling problem

Conditions of flashing =When power transistor temperature exceeds setting value. (Compressor Stops.) 

Indoor unit indicator

RUN lamp = Comes on

TIMER lamp = 5 time flash

Outdoor unit indicator (LED5) = 5 time flash

Description of trouble = Over heat of Compressor

Cause = Gas shortage , Defective discharge pipe thermistor

Conditions of flashing = When discharge pipe thermistor value exceeds setting value. (Compressor Stops.) 

Indoor unit indicator

RUN lamp = Comes on 

TIMER lamp = 6 time flash

Outdoor unit indicator (LED5) = 6 time flash (3)

Description of trouble = Error of signal transmission

Cause = Defective power supply , Broken signal wire, Defective indoor/outdoor unit circuit boads 

Conditions of flashing =  If serial signal cannot be sent or received for 1 minute and 55 seconds continuously.

Notes 

(1) Ceiling recessed type only

(2) Wall mounted type only 

(3) LED 5 will go out when even one unit is operating properly or there is an abnormality with the outdoor unit power supply.  It will also go out during normal operation.

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SANYO SAP-KRV9AEH+SAP-CRV9AEH & SAP-KRV12AEH+SAP-CRV12AEH ERROR CODE

Troubleshooting from Error Display NOTE 4 minutes after protection stop of compressor, the malfunction is shown in error code. In other situation, the malfunction will be displayed by press the light button for 6 times within 4 seconds. 

Code = 1 

Malfunction = Storage slug 

Error Display Dual 8 Display = EE 

LED = Heating LED-pause 3 seconds and blink 15 times 

Repair Method = Replace indoor main board. 

Code = 2 

Malfunction = Indoor PCB malfunction 

Error Display Dual 8 Display = EE 

LED = Heating LED-pause 3 seconds and blink 15 times 

Repair Method = Replace indoor main board. 

Code = 3 

Malfunction = Anti-freezing protection 

Error Display Dual 8 Display = E2 

LED = Running LED-pause 3 seconds and blink 2 times 

Repair Method = Outdoor ambient temperature is too low. 

Code = 4 

Malfunction = Overload of system 

Error Display Dual 8 Display = H4 

LED = Heating LED-pause 3 seconds and blink 4 times 

Repair Method = System is abnormal, check if the evaporator and condenser is dirty and blocked. 

Code = 5 

Malfunction = No motor of indoor unit feedback Indoor pipe 

Error Display Dual 8 Display = H6 

LED = Running LED-pause 3 seconds and blink 11 times 

Repair Method = Is electromotor mounted normally ? 

Code = 6 

Malfunction = temperature sensor malfunction Internal ambient 

Error Display Dual 8 Display = F2 

LED = Cooling LED-pause 3 seconds and blink 2 times 

Repair Method = Is it loose ? Measure the resistance value with universal meter 

Code = 7 

Malfunction = temperature sensor malfunction 

Error Display Dual 8 Display = F1 

LED = Cooling LED-pause 3 seconds and blink 1 time 

Repair Method = Is it loose ? Measure the resistance value with universal meter 

Code = 8 

Malfunction = Zero passage abnormal 

Error Display Dual 8 Display = UF 

LED = Heating and cooling LED blink 7 times at the same time 

Repair Method = Replace indoor main board. 

Code = 9 

Malfunction = Overload of compressor 

Error Display Dual 8 Display = H3 

LED = Heating LED-pause 3 seconds and blink 3 times 

Repair Method = Inspect connection state of the overload wire. 

Code = 10 

Malfunction = Startup failure 

Error Display Dual 8 Display = LC 

LED = Heating LED-pause 3 seconds and blink 11 times 

Repair Method = Check if the resistance of compressor and resistance to ground is normal. If the compressor is normal, the outdoor main board may be wrong. 

Code = 11 

Malfunction = No motor of outdoor unit feedback 

Error Display Dual 8 Display = UH 

LED = Heating and cooling LED blink 8 times at the same time 

Repair Method = This malfunction may happen when outdoor DC electromotor is used. 

Code = 12 

Malfunction = Over current protection 

Error Display Dual 8 Display = E5 

LED = Running LED-pause 3 seconds and blink 5 times 

Repair Method = Is electric network variable ? 

Code = 13 

Malfunction = 4-way valve conversion abnormal 

Error Display Dual 8 Display = U7 

LED = Cooling LED-pause 3 seconds and blink 20 times 

Repair Method = Replace 4-way valve. 

Code = 14 

Malfunction = Phase current detection malfunction of compressor 

Error Display Dual 8 Display = U1 

LED = Heating LED-pause 3 seconds and blink 13 times 

Repair Method = Replace outdoor main board. 

Code = 15 

Malfunction = Sync failure 

Error Display Dual 8 Display = H7 

LED = Heating LED-pause 3 seconds and blink 7 times 

Repair Method = Check if the resistance of compressor and resistance to ground is normal. If the compressor is normal, the outdoor main board may be wrong. 

Code = 16 

Malfunction = Current detection malfunction of complete unit Outdoor ambient 

Error Display Dual 8 Display = U5 

LED = Cooling LED-pause 3 seconds and blink 13 times 

Repair Method = Replace outdoor main board. 

Code = 17 

Malfunction = temperature sensor malfunction 

Error Display Dual 8 Display = F3 

LED = Cooling LED-pause 3 seconds and blink 3 times 

Repair Method = Is it loose ? Measure the resistance value with universal meter 

Code = 18 

Malfunction = Discharge protection of compressor 

Error Display Dual 8 Display = F4 

LED = Running LED-pause 3 seconds and blink 4 times  

Repair Method = Is it loose ? Measure the resistance value with universal meter 

Code = 19 

Malfunction = Break-circuit and short-circuit of outdoor discharge temperature sensor 

Error Display Dual 8 Display = F5 

LED = Cooling LED-pause 3 seconds and blink 5 times 

Repair Method = Is it loose ? Measure the resistance value with universal meter 

Code = 20 

Malfunction = short-circuit of outdoor condenser temperature sensor 

Error Display Dual 8 Display = F4 

LED = Cooling LED-pause 3 seconds and blink 18 times 

Repair Method = Is it loose ? Measure the resistance value with universal meter 

Code = 21 

Malfunction = Overheat of carbon fin 

Error Display Dual 8 Display = P8 

LED = Heating LED-pause 3 seconds and blink 19 times 

Repair Method = Is outdoor ambient temperature is too high ? Is radiator mounted correctly ?

 

Code = 22 

Malfunction = DC over current 

Error Display Dual 8 Display = UU 

LED = Heating and cooling LED blink 11 times at the same time 

Repair Method = 

Code = 23 

Malfunction = Temperature sensor malfunction of carbon fin 

Error Display Dual 8 Display = P7 

LED = Heating LED-pause 3 seconds and blink 18 times 

Repair Method = Replace outdoor main board. 

Code = 24 

Malfunction = Lack of Freon or block protection 

Error Display Dual 8 Display = F0 

LED = Cooling LED-pause 3 seconds and blink 10 times 

Repair Method = 

Code = 25 

Malfunction = DC input voltage is too high 

Error Display Dual 8 Display = PH 

LED = Cooling LED-pause 3 seconds and blink 11 times 

Repair Method = Is voltage of AC power supply normal ? 

Code = 26 

Malfunction = DC input voltage is too low 

Error Display Dual 8 Display = PL 

LED = Heating LED-pause 3 seconds and blink 21 times 

Repair Method = Is voltage of AC power supply normal ? 

Code = 27 

Malfunction = Communication malfunction Setting error. 

Error Display Dual 8 Display = E6 

LED = Running LED-pause 3 seconds and blink 6 times 

Repair Method = Is Outdoor connecting wire reliably connected ? 

Code = 28 

Malfunction = Indoor and outdoor unit abnormal 

Error Display Dual 8 Display = UA 

LED = Heating and cooling LED blink 12 times at the same time 

Repair Method = Outdoor unit is not matched with indoor unit.

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SANYO KHS3082+CH3082 & KHS3682+CH3682 Error Code

Since the indications cover various units, the corresponding parts listed below may not be  present in some models. 

Indication on Indoor unit

Alarm Code = F10

LED Clean (3) = OFF

Timer (2) = OFF

Operation (1) = Blinking

Error Code = S01

Diagnosis Contents = Room temperature sensor failure

Possible Malfunction = 1. Sensor open circuit or short circuit.

2. Contact failure at connector or open circuit at terminal crimping location (short-circuit detection only for the humidity sensor)

3. Indoor/outdoor PCboard failure.

Indication on Indoor unit

Alarm Code = F02

LED Clean (3) = OFF

Timer (2) = Blinking

Operation (1) = OFF

Error Code = S02

Diagnosis Contents = Indoor heat exchanger sensor failure

Possible Malfunction = 1. Sensor open circuit or short circuit.

2. Contact failure at connector or open circuit at terminal crimping location (short-circuit detection only for the humidity sensor)

3. Indoor/outdoor PCboard failure.

Indication on Indoor unit

Alarm Code = F13

LED Clean (3) = OFF

Timer (2) = Blinking

Operation (1) = Blinking

Error Code = S03

Diagnosis Contents = Humidity sensor failure

Possible Malfunction = 1. Sensor open circuit or short circuit.

2. Contact failure at connector or open circuit at terminal crimping location (short-circuit detection only for the humidity sensor)

3. Indoor/outdoor PCboard failure

Indication on Indoor unit

Alarm Code = F04/F12

LED Clean (3) = Blinking

Timer (2) = OFF

Operation (1) = OFF

Error Code = S04

Diagnosis Contents = Compressor temperature sensor failure

Possible Malfunction = 1. Sensor open circuit or short circuit.

2. Contact failure at connector or open circuit at terminal crimping location.

3. Outdoor PCboard failure.

Indication on Indoor unit

Alarm Code = F09/F15 to F18

LED Clean (3) = Blinking 

Timer (2) = OFF

Operation (1) = Blinking

Error Code = S05

Diagnosis Contents = Outdoor heat exchanger sensor failure

Possible Malfunction = 1. Sensor open circuit or short circuit.

2. Contact failure at connector or open circuit at terminal crimping location.

3. Outdoor PCboard failure.

Indication on Indoor unit

Alarm Code = F08/F21 to F24

LED Clean (3) = Blinking

Timer (2) = Blinking

Operation (1) = OFF

Error Code = S06

Diagnosis Contents = Outdoor air temperature sensor failure

Possible Malfunction = 1. Sensor open circuit or short circuit.

2. Contact failure at connector or open circuit at terminal crimping location.

3. Outdoor PCboard failure.

Indication on Indoor unit

Alarm Code = F27

LED Clean (3) = Blinking

Timer (2) = Blinking

Operation (1) = Blinking

Error Code = S07

Diagnosis Contents = Outdoor electric current detection failure

Possible Malfunction = Outdoor PCboard failure

Indication on Indoor unit

Alarm Code = E05

LED Clean (3) = OFF

Timer (2) = OFF

Operation (1) = ON

Error Code = E01

Diagnosis Contents = Indoor/outdoor communications failure (serial communication)

Possible Malfunction = 1. Mis-wiring

2. AC power failure

3. Blown fuse

4. Power Relay failure

5. Indoor or outdoor PCboard failure

6. Outdoor Fan Motor failure

7. Reactor failure

8. High-pressure switch failure

9. Overload relay failure

10. Magnetic Coil failure

Indication on Indoor unit

Alarm Code = P26

LED Clean (3) = OFF

Timer (2) = ON

Operation (1) = OFF

Error Code = E02

Diagnosis Contents = HIC circuit failure or Power Tr (transistor) circuit failure

Possible Malfunction = 1. HIC or power Tr failure

2. Outdoor fan does not turn

3. Instantaneous power outage

4. Service valve not opened

5. Outdoor fan blocked

6. Continuous overload operation

7. Compressor failure

8. Outdoor PCboard failure

Indication on Indoor unit

Alarm Code = F31

LED Clean (3) = 0FF

Timer (2) = ON

Operation (1) = ON

Error Code = E03

Diagnosis Contents = Outdoor unit external ROM (OTP data) failure

Possible Malfunction = External Rom data failure or PCboard failure

Indication on Indoor unit

Alarm Code = P16

LED Clean (3) = ON

Timer (2) = OFF

Operation (1) = OFF

Error Code = E04 

Diagnosis Contents = Peak current cut-off

Possible Malfunction = 1. Instantaneous power outage

2. HIC or power transistor failure

3. Outdoor PCboard failure

Indication on Indoor unit

Alarm Code = P07

LED Clean (3) = ON

Timer (2) = OFF

Operation (1) = ON

Error Code = E05

Diagnosis Contents = PAM circuit failure, Active circuit failure

Possible Malfunction = 1. Outdoor PCboard failure

2. Outdoor power supply voltage failure

Indication on Indoor unit

Alarm Code = P01

LED Clean (3) = ON

Timer (2) = ON

Operation (1) = ON

Error Code = E07

Diagnosis Contents = Indoor fan operating failure

Possible Malfunction = 1. Fan motor failure 

2. Contact failure at connector

3. Indoor PCboard failure

Indication on Indoor unit

Alarm Code = P19

LED Clean (3) = Blinking

Timer (2) = Blinking

Operation (1) = ON

Error Code = E08

Diagnosis Contents = 4-way valve switching failure, Indoor zero-cross failure

Possible Malfunction = 1. 4-way valve failure (heat pump model only)

2. Outdoor PCboard failure

Indication on Indoor unit

Alarm Code = P15

LED Clean (3) = Blinking

Timer (2) = ON

Operation (1) = Blinking

Error Code = E09

Diagnosis Contents = No-refrigerant protection

Possible Malfunction = 1. Service valve not opened

2. Shortageof refrigerant

Indication on Indoor unit

Alarm Code = P29

LED Clean (3) = Blinking

Timer (2) = ON

Operation (1) = ON

Error Code = E10

Diagnosis Contents = DC compressor drive circuit failure

Possible Malfunction = 1. Open phase

2. Outdoor PCboard failure

Indication on Indoor unit

Alarm Code = P22

LED Clean (3) = ON

Timer (2) = Blinking

Operation (1) = Blinking

Error Code = E11

Diagnosis Contents = Outdoor fan operating failure

Possible Malfunction = 1. Fan motor failure

2. Contact failure at connector

3. Outdoor PCboard failure

Indication on Indoor unit

Alarm Code = E07/P04/P05/P20/P27

LED Clean (3) = ON

Timer (2) = Blinking

Operation (1) = ON

Error Code = E12

Diagnosis Contents = Outdoor system communications failure, OLR operation, Outdoor power supply open phase and Outdoor coil freezing

Possible Malfunction = 1. Mis-wiring

2. Blown fuse

3. Powe Relay failure

4. Outdoor PCboard failure

5. Compressor failure

Indication on Indoor unit

Alarm Code = P11

LED Clean (3) = ON

Timer (2) = ON

Operation (1) = Blinking

Error Code = E13

Diagnosis Contents = Freeze-prevention activated

Possible Malfunction = 1. Indoor fan system failure

2. Shortage of refrigerant

3. Low temperature operation

Technical and Service manual please download <a href="http://us.sanyo.com/dynamic/product/Downloads/30.36KHS82%20Technical%20Service%20Manual-22308430.pdf">here</a>

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Fault Codes RAV-SM / RAV-SP

Fault codes are displayed directly on wired remote controller – to access the service history:

Press CHECK and SET for 4 seconds

Scroll through stored codes using the TEMP set buttons

Press CHECK to cancel service history

Press CLEAR to delete codes

Up to 4 Codes can be stored

Code - Description

E01 Controller (local or network) receives no communication from a master indoor unit- could include that master is

turned off. Also check that there is a master controller

E02 Local controller failure (unable to transmit)

E03 Master indoor unit receives no data to A-B. Often appears as an E01 fault code

E04 Indoor unit (except twin slave) receives no communication from outdoor unit; can include klixon on 560 Digital

Inverter split system – checked by measuring 280VDC across outdoor unit capacitors

E08 Duplicated indoor address

E09 2 local controller on a group – both configured as masters

E10 Indoor PCB failure

E18 Communication failure between master indoor unit and slave

F01 Indoor TCJ sensor error

F02 Indoor TC2 sensor error

F04 TD1 sensor error

F06 TE1 sensor error

F08 TO sensor error

F10 Indoor TA sensor error

F29 Indoor PCB failure

H01 Inverter compressor over current detected

H02 Master outdoor unit over current detected shortly after start up

H03 Current detected on master outdoor unit whilst idle

H06 Low pressure detected by Ps sensor (0.02Mpa)

L03 Duplicated master indoor units in a group

L07 Indoor in a group previously addressed as a single unit – check addressing

L08 Indoor address not set

L09 Indoor unit capacity not set

L29 IPDU error (number of detected IPDU units is reduced)

L30 Input on CN80 circuit for 1 minute

L31 Outdoor PCB error

P01 Indoor fan motor error

P03 High discharge temperature (TD1 exceeded 115°C)

P04 High pressure switch activated (Detected by high TE temp on Digital Inverter)

P07 Heat sink overheat

P10 Float switch activated

P12 Indoor fan motor error – detected by feedback circuit

P19 Wrong change in temperature (4 way valve error)

P22 Outdoor fan IPDU error

P26 Giant Transistor short circuit

P29 Compressor error detected by feedback circuit

P31 Indoor PCB error

Error by TCC-Link central controller

Code Description

C05 Sending error in TCC-Link central control device

C06 Receiving error in TCC-Link central control device

C12 Batch alarm for general purpose equipment control interface

P30 Group control follower unit error/duplicated central control addresses

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Fault Codes – 2 Pipe Modular Multi

Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory. Caution
must be taken when removing the access covers, as high voltages are present.
Fault diagnosis is available at three locations within the Air Conditioning system. :-
1. Remote Controller - press the check button (if installed)
2. Central Controller – press the check button (if installed)
3. Outdoor Unit – Inv & Fix switch positions 1 - 1 - 1

Code = 04
PCB = IFACE
Area = IFACE to INV
Condition = Communication failure
Criteria =

Code = 08
PCB = IN
Area = TC1 and TC2 coil sensors
Condition = Indoor heat exchange changes temperature but in wrong direction
Criteria =

Code = 0C
PCB = IN
Area = TA air temperature sensor
Condition = OC/SC
Criteria =

Code = 0b
PCB = IN
Area = Float switch circuit
Condition = OC
Criteria =

Code = 11
PCB = IN
Area = Fan motor
Condition = Short circuit
Criteria =

Code = 12
PCB = IN
Area = PCB
Condition = EEPROM failure
Criteria =

Code = 14
PCB = INV
Area = DC current sensor
Condition = INV compressor or transistor SC. Sensor OC
Criteria =

Code = 17
PCB = INV
Area = DC current sensor
Condition = INV compressor current detected during off cycle.
Criteria =

Code = 18
PCB = IFACE
Area = TE1 defrost sensor
Condition = OC/SC
Criteria =

Code = 1C
PCB = IFACE
Area = PCB
Condition = EEPROM failure
Criteria =

Code = 1d
PCB = INV
Area = DC current sensor
Condition = INV compressor overload
Criteria = > 1.5 times full load current

Code = 1F
PCB = INV
Area = DC current sensor
Condition = Excessive current detected after current release
Criteria =

Code = 21
PCB = INV
Area = INV Compressor
Condition = HP switch or klixon
Criteria = > 363 psig – 25 Bar

Code = 22
PCB = IFACE
Area = Pd sensor
Condition = Excessive pressure
Criteria = > 406 psig – 28 Bar

Code = 87
PCB = IFACE
Area = Input Phase
Condition = Missing phase
Criteria =

Code = 89
PCB = IFACE
Area = IN capacity settings
Condition = Too high
Criteria = > 135% outdoor unit

Code = 8d
PCB = IFACE
Area = Outdoor units - number of
Condition = Has fallen since last set up
Criteria =

Code = 8E
PCB = IFACE
Area = Outdoor units - number of
Condition = Is too high
Criteria = > 5

Code = 8F
PCB = FIX unit address
Area = Duplicated
Condition = When manually set
Criteria =

Code = 93
PCB = IN
Area = TC1 gas sensor
Condition = OC/SC
Criteria =

Code = 94
PCB = IN
Area = TC2 liquid sensor
Condition = OC/SC
Criteria =

Code = 95
PCB = IFACE
Area = PQ
Condition = Communication failure
Criteria = No INV outdoor unit

Code = 96
PCB = IFACE
Area = IN units - number of
Condition = Too many
Criteria = > 40

Code = 97
PCB = Central
Area = XY
Condition = Communication failure
Criteria =

Code = 98
PCB = Central
Area = XY
Condition = Duplicated addresses
Criteria =

Code = 99
PCB = Remote
Area = ABC
Condition = Communication failure
Criteria =

Code = 9A
PCB = IN
Area = TC1 gas sensor
Condition = Unauthorized temperature change
Criteria = Changed by > 5ºC after 15 minutes operation

Code = 9F
PCB = IN
Area = TC1 gas sensor and TC2 liquid sensor
Condition = Insufficient performance
Criteria = Changed by < 5ºC after 60 minutes operation

Code = A0
PCB = IFACE
Area = TD1 discharge sensor
Condition = OC/SC
Criteria =

Code = A1
PCB = IFACE
Area = TD2 discharge sensor
Condition = OC/SC
Criteria =

Code = A2
PCB = IFACE
Area = TS1 suction sensor
Condition = OC/SC
Criteria =

Code = A6
PCB = IFACE
Area = TD1 discharge sensor
Condition = High discharge temperature
Criteria = > 130ºC 3 times

Code = A7
PCB = IFACE
Area = TS1 suction sensor
Condition = High suction temperature
Criteria = > 60ºC for 10 minutes, 3 times

Code = AA
PCB = IFACE
Area = Pd pressure sensor
Condition = OC
Criteria =

Code = Ab
PCB = IFACE
Area = Pd and Ps pressure sensors
Condition = OC or crossed
Criteria =

Code = AE
PCB = IFACE
Area = TD1 discharge sensor
Condition = High discharge temperature (low load condition)
Criteria = > 110ºC, 3 times

Code = AF
PCB = IFACE
Area = Phase rotation
Condition = Incorrect
Criteria =

Code = b4
PCB = IFACE
Area = Ps sensor
Condition = Suction pressure too high during operation
Criteria = OC or < 138 psig – 9.5 Bar

Code = b5
PCB = IN
Area = CN17
Condition = Indoor unit emergency circuit
Criteria = Resistive connection

Code = b6
PCB = IN
Area = CN17
Condition = Indoor unit emergency circuit
Criteria = SC

Code = b7
PCB = Central
Area = Fault in connected group
Condition = Check local controller
Criteria =

Code = b9
PCB = IN
Area = Pressure sensor
Condition = OC
Criteria =

Code = bb
PCB = IFACE
Area = TD2 discharge sensor
Condition = High discharge temperature
Criteria = > 130ºC 3 times

Code = bd
PCB = IFACE
Area = TD2, Ps, Pd
Condition = FIX compressor contactor fault
Criteria = Operation detected during off cycle

Code = bE
PCB = IFACE
Area = Ps sensor
Condition = Low pressure
Criteria = < 3 psig – 0.21 Bar

Code = cF
PCB = IN
Area = Main and relay PCBs
Condition = Communication failure
Criteria =

Code = d1
PCB = IFACE
Area = INV outdoor unit
Condition = Duplicated within a system
Criteria =

Code = d2
PCB = IFACE
Area = FIX unit fault
Condition = Press SW04 for several seconds
Criteria = Fan of outdoor unit runs

Code =d3
PCB = IFACE
Area = TH inverter overheat sensor
Condition = OC/SC
Criteria =

Code = d4
PCB = IFACE
Area = TK1 oil level sensor primary side
Condition = OC/SC
Criteria =

Code = d5
PCB = IFACE
Area = TK2 oil level sensor secondary side
Condition = OC/SC
Criteria =

Code = d6
PCB = IFACE
Area = TK3 oil level sensor
Condition = OC/SC
Criteria =

Code = d7
PCB = IFACE
Area = TK1, 2, 3
Condition = Oil level low
Criteria = > 2 hours

Code = d8
PCB = IFACE
Area = TK1 oil level sensor primary side
Condition = No oil flow detected
Criteria = No temp change during oil level management

Code = d9
PCB = IFACE
Area = TK2 oil level sensor secondary side
Condition = No oil flow detected
Criteria = No temp change during oil level management

Code = dA
PCB = INV
Area = IGBT overheating
Condition =
Criteria =

Code = db
PCB = IFACE
Area = TK1 and TK2
Condition = No oil flow detected
Criteria = No temp change during oil level management

Code = dC
PCB = IFACE
Area = TK1
Condition = High oil temperature
Criteria = > 50ºC

Code = dd
PCB = IFACE
Area = FIX outdoor unit
Condition = Operation detected during off cycle
Criteria =

Code = dE
PCB = IFACE
Area = IN unit
Condition = Automatic addressing failure
Criteria =

Code = dF
PCB = IFACE
Area = Outdoor unit
Condition = Automatic addressing failure
Criteria =

Code = E1
PCB = IFACE
Area = FIX compressor 1
Condition = HP switch, klixon or overload relay
Criteria = Pd is > 363 psig – 25 Bar

Code = E5
PCB = IFACE
Area = INV compressor
Condition = HP switch or klixon
Criteria = Pd is > 363 psig – 25 Bar

Code = E6
PCB = IFACE
Area = FIX compressor 1
Condition = HP switch, klixon or overload relay
Criteria = Pd is > 363 psig – 25 Bar

Code = Eb
PCB = IFACE
Area = b6 code received from IN unit
Condition =
Criteria =

Code = F0
PCB = IFACE
Area = FIX compressor 2
Condition = HP switch, klixon or overload relay
Criteria = Pd is > 363 psig– 25 Bar

Code = F1
PCB = IFACE
Area = FIX compressor 2
Condition = HP switch, klixon or overload relay
Criteria = Pd is > 363 psig– 25 Bar

Read More ->>

Fault Codes – 3 Pipe SMI

Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory. Caution
must be taken when removing the access covers, as high voltages are present.
Fault diagnosis is available at three locations within the Air Conditioning system. :
1. Remote Controller - press the check button
2. Multi Controller - rotate the display switch to position 1
3. Outdoor Unit - see following chart

Click on picture to enlarge

Read More ->>

Fault Codes – 3 Pipe Super Multi

Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory. Caution
must be taken when removing the access covers, as high voltages are present.
Fault diagnosis is available at three locations within the Air Conditioning system. :
1. Remote Controller - press the check button
2. Multi Controller - rotate the display switch to position 1
3. Outdoor Unit - see following chart


Click on picture to enlarge

Read More ->>

Fault Codes – 2 Pipe Super Multi

Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory.
Caution must be taken when removing the access covers, as high voltages are present.
Fault diagnosis is available at three locations within the Air Conditioning system. :-
1. Remote Controller - press the check button
2. Multi Controller - rotate the display switch to position 1
3. Outdoor Unit - see following chart


Click on picture to enlarge

Read More ->>

Fault Codes – Toshiba RAS “N” Series

Fault Codes – RAS “N” Series
Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory. Caution
must be taken when removing the access covers as high voltages are present.
Fault codes are displayed through the LEDs flashing at 5 times per second. Note, the green LED will flash once per second when the system is initially powered.
More specific codes may be obtained, while in the fault mode through the wireless controller
1. Press CHK to enter service mode
2. Navigate through TIMER ƒ buttons until all LEDs flash, accompanied by the internal buzzer – compare the displayed code with the table below
3. Press CLR button to clear the existing fault code (controller displays 7F)
Press ON/OFF button to exit service mode.

Initial code/display = 01
Code = 0C
Description = TA sensor open or short circuit

Initial code/display = 01
Code = 0d
Description = TC sensor open or short circuit

Initial code/display = 01
Code = 11
Description = Indoor fan motor problem

Initial code/display = 01
Code = 12
Description = Indoor PCB problem

Initial code/display = 01
Code = 04
Description = Indoor to outdoor communication (includes compressor thermostat)

Initial code/display = 01
Code = 05
Description = Indoor to outdoor communication

Initial code/display = 02
Code = 14
Description = Inverter low voltage or short circuit protection

Initial code/display = 02
Code = 16
Description = Compressor position circuit

Initial code/display = 02
Code = 17
Description = Compressor current detected during off-cycle

Initial code/display = 02
Code = 18
Description = TE or TS sensor open or short circuit

Initial code/display = 02
Code = 19
Description = Td sensor open or short circuit

Initial code/display = 02
Code = 1A
Description = Outdoor fan motor problem

Initial code/display = 02
Code = 1b
Description = TE sensor fault

Initial code/display = 02
Code = 1C
Description = Compressor drive circuit

Initial code/display = 03
Code = 07
Description = Indoor to outdoor communication (includes compressor thermostat)

Initial code/display = 03
Code = 08
Description = Indoor heat exchanger changes temperature – but in wrong direction

Initial code/display = 03
Code = 1d
Description = Compressor locked rotor current protection

Initial code/display = 03
Code = 1E
Description = Compressor - high discharge temperature

Initial code/display = 03
Code = 1F
Description = Compressor current remains too high – after current release

Read More ->>

Fault Codes - Toshiba Ras Series

Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory. Caution
must be taken when removing the access covers as high voltages are present.
Fault diagnosis is available by pressing the check button on the rear of the remote controller.
Note: Fault diagnosis for these systems is only possible when using infrared remote controller type WC-C2YE
or WH-C2YE (which may be ordered under part number 43069666)

Code = 00
Indoor P.C. Board Fault
Code = 0C
Fault = TA Sensor open circuit
System Status = No cooling operation (Heating operation continuously – heat pumps)
Check = Sensor Resistance 20°C = 12.5kW, 25°C = 10kW

Code = 00
Indoor P.C. Board Fault
Code = 0C
Fault = TA Sensor Short circuit
System Status = No heating operation – heat pumps (Cooling operation continuously)
Check = Sensor Resistance 20°C = 12.5kW, 25°C = 10kW

Code = 00
Indoor P.C. Board Fault
Code = 0d
Fault = TC sensor open circuit
System Status = No cooling operation (Heating operation continuously – heat pumps)
Check = Sensor Resistance 20°C = 12.5kW, 25°C = 10kW

Code = 00
Indoor P.C. Board Fault
Code = 0d
Fault = TC Sensor short circuit
System Status = No heating operation – heat pumps (Cooling operation continuously)
Check = Sensor Resistance 20°C = 12.5kW, 25°C = 10kW

Code = 00
Indoor P.C. Board Fault
Code = 11
Fault = Fan Motor
System Status = System Stop
Check = Seized motor Thermal fuse open circuit

Code = 00
Indoor P.C. Board Fault
Code = 12
Fault = PCB Fault
System Status = System Stop
Check = Replace PCB

Code = 00
Indoor P.C. Board Fault
Code = 21
Fault = IOL Operation
System Status = System Stop
Check =

Code = 00
Indoor P.C. Board Fault
Code = 13
Fault = TC Temp
System Status = Operation Continues
Check = Check TC Sensor

Code = 01
Inter. Cable
Code = 04
Fault = Inter. Cable
System Status = System Stop
Check = Cable / CT termination and thermal fuse

Code = 01
Inter. Cable
Code = 05
Fault = Inter Cable
System Status = Operation Continues
Check = No Communication to the outdoor unit

Code = 02
Outdoor PCB
Code = 18
Fault = TE Sensor Open/Closed Circuit
System Status = System Stop
Check = Check outdoor TE sensor

Code = 02
Outdoor PCB
Code = 19
Fault = TD Sensor Open / Closed circuit
System Status = System Stop
Check = Check outdoor TD sensor

Code = 03
Other Parts
Code = 07
Fault = Instantaneous power failure Compressor thermo
System Status = Operation Continues
Check = Check Compressor thermo. Check Ref. charge Indoor PCB

Code = 03
Other Parts
Code = 1E
Fault = TD > 120°C
System Status = System Stop
Check = Check TD Sensor Check Ref. Charge

Code = 03
Other Parts
Code = 09
Fault = No change in temp. Of indoor unit
System Status = Indoor unit operates
Check = Compressor running not pumping / klixon tripped. For cross wiring

Code = 03

Code =
Fault = Frost Condition
System Status = Indoor fan low speed, no outdoor unit operation
Check = Gas charge / pipe blockage. Indoor air flow TC Sensor Cross wiring

Code = 03
Other Parts
Code = 1d
Fault = Compressor
System Status = System Stop
Check = Compressor windings. Current consumption.

The LEDs on the indoor unit will also flash depending on the type of fault :

Operation display flashing at 1Hz Restoration of power after a power cut (N/A)
Operation display flashing at 5Hz TA Sensor fault (0C)
Operation display flashing at 5Hz TC Sensor fault (0d)
Operation display flashing at 5Hz Fan motor fault (11)
Operation display flashing at 5Hz PCB fault (12)
Operation and timer display flashing at 5Hz Interconnecting cable (04)
Operation, timer and pre-heat display flashing at 5Hz No temp change or frost condition (09)
Operation, timer and pre-heat display flashing at 5Hz Compressor (1d)

Read More ->>

GREE Wall Mounted and Ducted Error Codes

GREE Ducted Air-conditioning Error Codes

Error code = E1

error = Compressor high pressure cutout (beep)

Error code = E2

error = Indoor coil freeze protection

Error code = E3

error = Compressor low pressure cut out (beep)

Error code = F0

error = Indoor room temperature failure

Error code = F1

error = Indoor coil temperature failure

Error code = F2

error = outdoor ambient temperature failure

Error code = F3

error = outdoor coil temperature failure

GREE Split air conditioners Error Code

Name of malfunction = Refrigerant system high pressure protection

Display of double eight code = E1

Display of lamp

Running lamp = blink 1 time

Cooling lamp =

Heating lamp =

Name of malfunction = Anti-freezing protection

Display of double eight code = E2

Display of lamp

Running lamp = blink 2 times

Cooling lamp =

Heating lamp =

Name of malfunction = Compressor exhaust high temperature protection

Display of double eight code = E4

Display of lamp

Running lamp = blink 4 times

Cooling lamp =

Heating lamp =

Name of malfunction = AC over-current protection

Display of double eight code = E5

Display of lamp

Running lamp = blink 5 times

Cooling lamp =

Heating lamp =

Name of malfunction = Communication failure between indoor unit and outdoor unit

Display of double eight code = E6

Display of lamp

Running lamp = blink 6 times

Cooling lamp =

Heating lamp =

Name of malfunction =Anti-high temperature protection

Display of double eight code = E8

Display of lamp

Running lamp = blink 8 times

Cooling lamp =

Heating lamp =

Name of malfunction = No feedback of indoor fan motor

Display of double eight code = H6

Display of lamp

Running lamp = blink 11 times

Cooling lamp =

Heating lamp =

Name of malfunction = Jumper cap malfunction protection

Display of double eight code = C5

Display of lamp

Running lamp = blink 15 times

Cooling lamp =

Heating lamp =

Name of malfunction = Indoor ambient sensor open or short circuit

Display of double eight code = F1

Display of lamp

Running lamp =

Cooling lamp = blink 1 times

Heating lamp =

Name of malfunction = Indoor tube sensor open or short circuit

Display of double eight code = F2

Display of lamp

Running lamp =

Cooling lamp = blink 2 times

Heating lamp =

Name of malfunction = Outdoor ambient sensor open or short circuit

Display of double eight code = F3

Display of lamp

Running lamp =

Cooling lamp = blink 3 times

Heating lamp =

Name of malfunction = Outdoor tube sensor open or short circuit

Display of double eight code = F4

Display of lamp

Running lamp =

Cooling lamp = blink 4 times

Heating lamp =

Name of malfunction = Exhaust sensor open or short circuit

Display of double eight code = F5

Display of lamp

Running lamp =

Cooling lamp = blink 5 times

Heating lamp =

Name of malfunction = Over load limit/drop frequency

Display of double eight code = F6

Display of lamp

Running lamp =

Cooling lamp = Blink 6 times

Heating lamp =

Name of malfunction = Over current limit/drop frequency

Display of double eight code = F8

Display of lamp

Running lamp =

Cooling lamp = blink 8 times

Heating lamp =

Name of malfunction = High exhaust temperature limit/drop frequency

Display of double eight code = F9

Display of lamp

Running lamp =

Cooling lamp = blink 9 times

Heating lamp =

Name of malfunction = Over voltage protection for PN

Display of double eight code = PH

Display of lamp

Running lamp =

Cooling lamp = blink 11 times

Heating lamp =

Name of malfunction = AC current detect circuit malfunction

Display of double eight code = U5

Display of lamp

Running lamp =

Cooling lamp = blink 13 times

Heating lamp =

Name of malfunction = Compressor reverse protection

Display of double eight code = U4

Display of lamp

Running lamp = 

Cooling lamp = blink 14 times

Heating lamp =

Name of malfunction = Over compressor phase current protection

Display of double eight code = P5

Display of lamp

Running lamp =

Cooling lamp = blink 15 times

Heating lamp =

Name of malfunction = Inlet tube sensor malfucntion

Display of double eight code = b5

Display of lamp

Running lamp =

Cooling lamp = blink 19 times

Heating lamp =

Name of malfunction = Outdoor DC fan motor malfunction

Display of double eight code = L3

Display of lamp

Running lamp =

Cooling lamp = blink 21 times

Heating lamp =

Name of malfunction = Outlet tube sensor malfunction

Display of double eight code = b7

Display of lamp

Running lamp =

Cooling lamp = blink 22 times

Heating lamp =

Name of malfunction = Compressor overload sensor malfunction 

Display of double eight code = FE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Defrosting

Display of double eight code = H1

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 1 time

Name of malfunction = Static clearing dust protection

Display of double eight code = H2

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 2 times

Name of malfunction = Compressor overload protection

Display of double eight code = H3

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 3 times

Name of malfunction = System abnormal protection

Display of double eight code = H4

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 4 times

Name of malfunction = IPM protection

Display of double eight code = H5

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 5 times

Name of malfunction = PFC protection

Display of double eight code = HC

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 6 times

Name of malfunction = Compressor loss step protection

Display of double eight code = H7

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 7 times

Name of malfunction = Heating anti-high temperature drop frequency

Display of double eight code = HO

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 10 times

Name of malfunction = Start-up failure

Display of double eight code = Lc

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 11 times

Name of malfunction = Compressor protection against loss of phase

Display of double eight code = U2

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 12 times

Name of malfunction = Compressor phase current detection circuit malfunction

Display of double eight code = U1

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 13 times

Name of malfunction = Compressor demagnetization protection 

Display of double eight code = HE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 14 times

Name of malfunction = Loading EEPROM malfunction

Display of double eight code = EE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 15 times

Name of malfunction = Communication failure between main board and driver board

Display of double eight code = P6

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 16 times

Name of malfunction = Capasitor charge malfunction

Display of double eight code = PU

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 17 times

Name of malfunction = IPM sensor circuit malfunction

Display of double eight code = P7

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 18 times

Name of malfunction = IPM high temperature protection

Display of double eight code = P8

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 19 times

Name of malfunction = PN voltage drop protection

Display of double eight code = U3

Display of lamp

Running lamp =

Cooling lamp = blink 20 times

Heating lamp =

Name of malfunction = Low PN voltage protection

Display of double eight code = PL

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 21 times

Name of malfunction = Current detect circuit malfunction or current sensor malfunction

Display of double eight code = Pc

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Compressor loss of phase protection

Display of double eight code = Ld

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Compressor or locked rotary protection

Display of double eight code = LE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = IPM over temperature limit/drop frequency

Display of double eight code = EU

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction =  4-way valve reversal abnormal

Display of double eight code = U7

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Disconnection of the exhaust temperature sensor

Display of double eight code = U8

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = AC power zero voltage detect error

Display of double eight code = U9

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Over tube temperature drop frequency

Display of double eight code = FA

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Anti-freezing limit/drop frequency

Display of double eight code = FH

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Read More ->>

Carrier XPower Platinum and Gold Error Code

Judgment by Flashing LED of Indoor Unit.
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section.

Item = A
Check code =
Block display = OPERATION (GREEN) Flashing display (1 Hz)
Description for self-diagnosis = Power failure (When power is ON)

Item = B
Check code = 00
Block display = OPERATION (Green) Flashing display (5 Hz)
Description for self-diagnosis = Protective circuit operation for indoor P.C board

Item = C
Check code = 01
Block display = OPERATION (green) TIMER (Yellow) Flashing display (5 Hz)
Description for self-diagnosis = Protective circuit operation for connecting cable and signal system.

Item = D
Check code = 02
Block display = Operation (green) filter (orange)
Description for self-diagnosis = Protective circuit operation for outdoor P.C board

Item = E
Check code = 03
Block display = OPERATION (green) TIMER (Yellow) Flashing display (5 Hz)
Description for self-diagnosis = Protective circuit operation for others (including compressor)


Caution at Servicing
1. After servicing, press the START/STOP button to return to the normal mode.
2. After servicing by the check code, turn off breaker of the supply and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.
however, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.
3 After servicing, press (CLR) button under check mode status and then send the check code "7F" to the indoor unit.
The error code stored in memory is cleared.

Block distinction
Check code = 00
Block = Indoor P.C. board etc
operation of diagnosis function
Check code = 0C
Cause of operation = Short-circuit or disconnection of the room temperature sensor (TA sensor)
Air conditioner status = Operation continues
Remark = Diplayed when error is detected.
Judgment and action = 1. Check tje room temp sensor
2. When the room temp sensor is normal, check P.C. board

Block distinction
Check code = 00
Block = Indoor P.C. board etc
operation of diagnosis function
Check code = 0d
Cause of operation = Being out of place, disconnection, short circuit or migration of heat exchanger sensor (TC sensor)
Air conditioner status = Operation continues
Remark = Diplayed when error is detected
Judgment and action = 1. Check heat exchanger sensor
2. when heat exchanger sensor is normal, check P.C board

Block distinction
Check code = 00
Block = Indoor P.C. board etc
operation of diagnosis function
Check code = 11
Cause of operation = Lock of indoor fan or trouble on indoor fan circuit
Air conditioner status = All off
Remark = Diplayed when error is detected
Judgment and action = 1. Check the motor
2. When the motor is normal, check P.C board

Block distinction
Check code = 00
Block = Not displayed
operation of diagnosis function
Check code = 12
Cause of operation = Trouble on other indoor P.C board
Air conditioner status = Operation continues
Remark = Diplayed when error is detected
Judgment and action = Replace P.C board

Block distinction
Check code = 01
Block = Connecting cable and serial signal
operation of diagnosis function
Check code = 04
Cause of operation = Return serial signal is not sent to indoor side from operation started
1. Defective wiring of connecting cable.
2. Operation of compressor thermo gas shortage gas leak
Air conditioner status = Operation continues
Remark = Flashes when trouble is detected on Return serial signal, and normal status when signal is reset.
Judgment and action = 1. When the outdoor unit never operate:
- Check connecting cable and connect if defective wiring.
- Check 25A fuse of inverter P.C board
- Check 3.15 A of inverter P.C board
2. To display (Other) block during operation, check compressor thermo.
Operation and supply gas (check gas leak also)
3. Unit operates normally during check.
if rreturn serial signal does not stop between indoor terminal board 2 and 3, replace inverter P.C board.
if signal stops between indoor terminal board 2 and 3, replace indoor P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 14
Cause of operation = Inverter over-current protective circuit operates. (Short time)
Air conditioner status =All off
Remark = Displayed when error is detected.
Judgment and action = Event if trying operation again, all operations stop immediately : Replace P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 16
Cause of operation = Position-detect circuit error or short circuit between windings of compressor
Air conditioner status = All off
Remark = Displayed when error is detected.
Judgment and action = 1. Even if connecting lead wire of compressor is removed, position-detect circuit error occured : Replace P.C board.
2. Measure resistance between of compressor, and perform short circuit : Replace compressor.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 17
Cause of operation = Current-detect circuit error
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = Event if trying operation again, all opperation stp immediately : Replace P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 18
Cause of operation = Being of place, disconnection or short circuit of the outdoor heat exchanger sensor (TE) or suction temp sensor (Ts)
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check sensor (TE and TS) 2. Check P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 19
Cause of operation = Disconection or short circuit of the discharge temp sensor
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check discharge temp sensor (TD) 2. Check P.C board

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 1A
Cause of operation = Outdoor fan drive system error
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = Position-detect error, over-current protective operation of outdoor fan drive system, fan lock or etc.
Replace P.C board or fan motor.

Block distinction
Check code = 02
Block = Not displayed
operation of diagnosis function
Check code = 1b
Cause of operation = Outdoor heat exchanger temp sensor error
Air conditioner status = Operation continues
Remark =
Judgment and action = 1. Check outdoor temp sensor (TO) 2. Check P.C board

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 1C
Cause of operation = Compressor drive output error, compressor error (lock, missing or etc), Break down
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = When 20 seconds passed after start-up, position-detect circuit error occured : replace compressor or trouble on P.M.V.

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 07
Cause of operation = Return serial signal has been sent when peration started, but it is not sent from halfway.
Air conditioner status = Operation continues
Remark = Flashes when trouble is detected on return serial signal, and normal status when signal is reset.
Judgment and action = 1. Repeat start an stop with interval of approx 10 to 40 minutes (Code is not displated during operation)
supply gas (Check also gas leak)
2. Unit operates normally during check.
if return serial signal does not stop between indoor terminal block 2 and 3 replace inverter P.C board.
if signal stops between indoor terminal block 2 and 3, replace indoor P.C board.

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 1d
Cause of operation = Compressor does not rotate. (Current protective circuit does not operate when a spceified time passed after compressor had been activated).
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Trouble on compressor 2. Trouble on wiring of compressor (missed phase)

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 1E
Cause of operation = Discharge temp exceeded 117 degrees
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check discharge temp sensor (TD) 2. Gas leakage. 3. Trouble on P.M.V

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 1F
Cause of operation = Break down compressor
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check power voltage (220-230-240 V + 10%) 2. Overload operation of refrigeration cycle. check installation condition (Short-circuit of outdoor diffuser)

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 08
Cause of operation = 4-way valve inverse error (TC sensor value lowered during heating operation)
Air conditioner status = Operation continues
Remark =
Judgment and action = 1. Check 4-way valve operation

Read More ->>

AUX Wall Mounted Error Code

Introduction to the fault display CODE of AUX air conditioner
1. HS(Y) HSA(Y) HSB(Y) HSF (Y) HV(Y) HVA(Y) digital display for the series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = E4
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal.
Display mode = E1
The display precedence level = 2

Fault source = Copper temp sensor is abnormal (indoor)
Display mode = E3
The display precedence level = 3

Fault source = Copper temp sensor is abnormal (outdoor)
Display mode = E2
The display precedence level = 4

2. H (Except KFR-25G/H) H1 HA HB series faults display:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1


Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2


Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3


Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 1 times in every 1 seconds
The display precedence level = 4

3. H(Y) Model air conditioner fault display:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1


Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2


Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3


Fault source = Copper temp sensor is abnormal (outdoor)
Display mode = Timing light twinkles 1 times in every 1 seconds
The display precedence level = 4

4. EA EC EM EY EZ EAA EAD EL HS1 HSZ HL1 HLZ P P1 ZZ CZ digital display series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = E4
The display precedence level = 1


Fault source = Plastic temp sensor is abnormal
Display mode = E1
The display precedence level = 2

Fault source = Copper temp sensor is abnormal (indoor)
Display mode = E3
The display precedence level = 3

5. All of the other E series except EA EC EM EY EZ EAA EAD:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2

Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3

6. QA QB QD digital display series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = E4
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal
Display mode = E1
The display precedence level = 2

Fault source = Copper temp sensor is abnormal
Display mode = E3
The display precedence level = 3

Fault source = Over-current oprotection
Display mode = E6
The display precedence level = 4

7. QC QQ light display series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2

Fault source = Copper temp sensor is abnormal
Display mode = Timing light twinkles 3 times in every 8 seconds
The display precedence level = 3

Fault source = Over-current oprotection
Display mode = Timing light twinkles 6 times in every 8 seconds
The display precedence level = 4

8. Faults display of 18000BTU~24000BTU wall unit series air-conditioner
Non-digital tube displays:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2
appearance = System turns off

Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3
appearance = System turns off

Fault source = Copper temp sensor is abnormal
Display mode = Timing light twinkles 8 times in every 8 seconds
The display precedence level = 4
appearance = System doesn't turns off

Digital tube displays:

Fault source = PG motor feedback is abnormal
Display mode = E1
The display precedence level = 2
appearance = System turns off

Fault source = Plastic temp sensor is abnormal
Display mode = E3
The display precedence level = 3
appearance = System turns off

Fault source = Copper temp sensor is abnormal
Display mode = E2
The display precedence level = 4
appearance = System doesn't turn off

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AUX Cassette Duct Ceiling and Floor Error Code

10 System failure protection and code
Controller will judge various failures in system operation automatically and treats them accordingly subject to
failure types. Failure protection can be classified two types subject to failure reason and treatment method:
system recoverable protection and system serious failure protection.

Controller of HAC-FX-AUX
System recoverable protection
While air condition system recoverability occurs, whole system should adopt correlative protection
measurement.
After failure protected recovers to normal condition, system will recover to nomal condition.

Failure reason = Treturn air sensor damage
Failure code = Po:01
Enter condition = Sensor short or cut
Protection measure = Timing operation
Recovery condition = Repair or replace

Failure reason = Anti-freezing protection under cooling generation
Failure code = Po:03
Enter condition = Tinner pipe < (EP01) and last 2 minutes
Protection measure = Compressor off and recover operation after satisfying exit condition
Recovery condition = Tinner pipe≥ (EP01) +14 degrees

Failure reason = Anti-overload protection under cooling generation
Failure code = Po:04
Enter condition = Touter pipe >
Protection measure = Compressor off and recover operation after satisfying exit condition
Recovery condition = Touter pipe≤50 degrees

Failure reason = Tinner pipe sensor damage
Failure code = Po:06
Enter condition = Sensor short or cut
Protection measure = Cancel Tinner pipe relative Protection function
Recovery condition = Repair or replace

Failure reason =Touter pipe sensor damage
Failure code = Po:07
Enter condition = Sensor short or cut
Protection measure = Cancel Touter pipe relative protection function
Recovery condition = Repair or replace

Failure reason = Over temperature protection under heat genration
Failure code = Po:11
Enter condition = Tinner pipe> (EP04)
Protection measure = Stop compressor, outer fan. Inner fan force high velocity operation
Recovery condition = After Tinner pipe≤ (SP04) Recover operation automatically

Failure reason = Recovery failure protection of water lift pump
Failure code = Po:12
Enter condition = Water level off (EC07) time
Protection measure = Stop compressor
Recovery condition = Automatic reset after on/off normal

System serious failure protection
After system serious failure protection occurs, all units shut down and wair for inspection

Failure reason = Communication failure
Failure code = Eo:00
Enter condition = Enter condition
Protection measure = Protection measure
Recovery condition = Recovery condition

Failure reason = Water lift pump failure
Failure code = Eo:01
Enter condition = water level switch off (EC07) and more than 30 minutes
Protection measure = System shutdown
Recovery condition = Press rest after on/off normal

Failure reason = Outer unit protection (P2)
Failure code = Eo:02
Enter condition = Outer unit protection switch off
Protection measure = System shutdown
Recovery condition = Press rest after on/off normal

Failure reason = Electric heater over temperature (P1)
Failure code = Eo:03
Enter condition = Over temperature switch off (EC06) seconds
Protection measure = System shutdown
Recovery condition = Press rest after on/off normal

Failure display of indicator lamp board
While failure occurs in unit, judge unit failure via three-indicator lamps ddisplay status, details showed as
followed table (constant light-on of power lamp only after controller engerization):

Failure name = Air return sensor failure
Failure code = Po:01
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Anti-freezing under coolinggeneration
Failure code = Po:03
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = ON

Failure name = Anti-overload under coolinggeneration
Failure code = Po:04
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = Inner pipe sensor damage
Failure code = Po:06
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = OFF

Failure name = Outer pipe sensor damage
Failure code = Po:07
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Over temperature protection under heat generation
Failure code = Po:11
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = ON

Failure name = Recovery failure of water lift pump
Failure code = Po:12
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = SHINE

Failure name = Seriousness failure of water lift pump
Failure code = Eo:01
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Outer unit protection swirch off (low pressure protection, phase reverse,phase lost)
Failure code = Eo:02
Red (power) = OFF
Gree (run) = ON
Yellow (timing) = ON

Failure name = Over temperature protection switch off
Failure code = Eo:03
Red (power) = ON
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Unit anti-cooling air
Failure code =
Red (power) = OFF
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Unit unfreezing
Failure code =
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = OFF

Failure name = Telecontrol wait signal
Failure code =
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = OFF

Controller of HAC-F1X-AUX
System recoverable prrotection
While air condition system recoverability occurs, whole system should adopt correlative protection
measurement. After failure protected recovers to normal condition, system will recover to nomal condition.

Failure name = T indoor pipe failure
Failure code = Pr: 01
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = OFF

Failure name = T outdoor pipe failure
Failure code = Pr: 02
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Anti-freezing under coolinggeneration
Failure code = Pr: 03
Red (power) = SHINE
Gree (run) = OF
Yellow (timing) = ON

Failure name = Anti-overload under coolinggeneration
Failure code = Pr: 04
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = T exhaust failure
Failure code = Pr: 05
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = OFF

Failure name = T return wind failure
Failure code = Pr: 06
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Heating-overload protection
Failure code = Pr: 08
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = ON

Failure name = Water level switch protect
Failure code = Pr: 11
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = ON

Failure name = Unit anti-cooling air
Failure code =
Red (power) = OFF
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Unit unfreezing
Failure code =
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = OFF

Failure name = Telecontrol wait signal
Failure code =
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = OFF

System serious failure protection
After system serious failure protection occurs, all units shut down and wair for inspection

Failure name = High press protect
Failure code = Er: 04
Red (power) = ON
Gree (run) = OF
Yellow (timing) = SHINE

Failure name = Low press protect
Failure code = Er: 05
Red (power) = ON
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = T exhaust protect
Failure code = Er: 06
Red (power) = ON
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = Current over protect
Failure code = Er: 07
Red (power) = ON
Gree (run) = ON
Yellow (timing) = SHINE

Failure name = No outdoor unit
Failure code = Er: 08
Red (power) = OFF
Gree (run) = ON
Yellow (timing) = ON

Failure name = Water level switch graveness protect
Failure code = Er: 11
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = Over temperature protection switch disconnection
Failure code = Er: 12
Red (power) = OFF
Gree (run) = ON
Yellow (timing) = SHINE

Failure name = Communication trouble
Failure code = Eo: 00
Red (power) = Line controller alarm ,it will be unchained after the communication electric cir cuitis ok
Gree (run) = Line controller alarm ,it will be unchained after the communication electric cir cuitis ok
Yellow (timing) = Line controller alarm ,it will be unchained after the communication electric cir cuitis ok

Failure name = Phase is lose or phase sequence is Reverse in three phase protection
Failure code = Eo: 03
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = SHINE

AUX Highcool 2007 Series Fault Codes
In the event of a failure a fault code on the controller will usually advise the nature of the problem.
Fault codes are divided into two groups. E codes are major faults and require the system to be manually reset. P codes are minor faults and will reset themselves in the event of the fault condition resolving itself. Sensor Failure P codes will allow the unit to run in emergency mode for 50 minutes with limited functionality before halting operation if the failure is not cleared.
All fault codes should be investigated by an engineer, although Pr03 and Pr08 should be investigated by the user by cleaning the filter and checking the operating temperature first.

Code = Eo00
Reason = ID to RC Comms Failure
Initiation = Comms Fail
Protection = Sys Stop
Recovery = Normal Comms

Code = Eo03
Reason = Phase Lost or Swapped
Initiation = Phase Problem
Protection = Sys Stop
Recovery = Solve Problem

Code = Er04
Reason = High Pressure Trip
Initiation = >42 Bar
Protection = Sys Stop
Recovery = <33 Bar

Code = Er05
Reason = Low Press Trip
Initiation = <1 Bar
Protection = Sys Stop
Recovery = >3 Bar

Code = Er06
Reason = High Discharge Temp
Initiation = >120C
Protection = Sys Stop
Recovery = Fix / Reset

Code = Er07
Reason = Overcurrent Trip
Initiation = ID Coil >16C
Protection = Sys Stop
Recovery = Fix / Reset

Code = Er08
Reason = ID to OD Comms Failure
Initiation = Comms Fail
Protection = Sys Stop
Recovery = Normal Comms

Code = Er11
Reason = Drain Failure
Initiation = Hi Water 30 mins
Protection = Sys Stop
Recovery = Fix / Reset

Code = Er12
Reason = Elec Heat Fail
Initiation = Unused
Protection = Unused
Recovery = Unused

Code = Pr01
Reason = ID Pipe Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr02
Reason = OD Pipe Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr03
Reason = Cooling Mode De-ice
Initiation = ID Coil <-2C/ 2 mins
Protection = Comp Off
Recovery = EP01 + 14C

Code = Pr04
Reason = Cooling Anti Overload
Initiation = OD Coil >60C
Protection = Comp Off
Recovery = OD Pipe <50C

Code = Pr05
Reason = Discharge Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr06
Reason = ID Air Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr08
Reason = Heating Hi Temp
Initiation = ID Coil >66C
Protection = OD off / ID Hi Spd
Recovery = ID Coil <50C

Code = Pr11
Reason = Drain Failure
Initiation = Hi Water 30 secs
Protection = Comp Off
Recovery = Auto Reset

 





 

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Midea Package Air-cooled Modular Chiller Error Code

Code Trouble
E0 Water-flow detection error (the third time)
E1 Power phases sequence failure
E2 Communication failure
E3 Total outlet water Temperature sensor failure (available for main unit)
E4 Outlet water temperature sensor in double-pipe heat interchanger error
E5 Pipe temperature sensor in condenser A error
E6 Pipe temperature sensor in condenser B error
E7 Outdoor Temperature sensor failure
E8 Error of the Air Exhaust Temp. Sensor at Digital Compressor
E9 Water-flow check trouble(wire controller and control board can recover automatically when the trouble is displayed
for the first and second times
EA Main unit detect that auxiliary unit’s quantity have decreased.
Eb Freeze-proof temperature sensor 1 in double-pipe heat interchanger error
EC Wire controller can not search the modules on line
ED Wire control and module unit communication error
Ed 1-hour consecutive 4-times PE protection
EE Wire control and computer communication error
EF Inlet water temperature sensor error
P0 System A high-pressure protection or discharge gas Temperature protection
P1 System A low-pressure protection
P2 System B high-pressure protection or discharge gas Temperature protection
P3 System B low-pressure protection
P4 System A current protection
P5 System B current protection
P6 System A Condenser high-Temperature protection
P7 System B Condenser high-Temperature protection
P8 Digital compressor discharge Temperature protection, when it is above 125℃
Pb System anti-freeze protection
PE Low-temperature protection of double-pipe heat interchanger
F1 Eprom failure
F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved)

Service manual download here

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SQ Series Portable Chiller Error Code

Error = Pr Off
Description = Brown Out Indication
Cause/Corrective Action = The Pr Off code will be indicated on the display if the chiller is running and main power is discontinued or
drops more than 10% below the normal operating voltage, the unit will shut down and the Pr OFF fault will
be indicated on the digital displays. Pressing the Power button will clear this fault condition

Error = 101
Description = EEPROM Failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 102
Description = A/D Converter Failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 103
Description = Controller serial bus failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 105
Description = CJC Error
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 109
Description = Unused memory byte changed
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 110
Description = Device or communication configuration change or invalid
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 111
Description = Fixed parameter associated with range invalid
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 112
Description = Setpoint out of temperature range
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 113
Description = RAM hardware failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 114
Description = Invalid device configuration
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 117
Description = Invalid program counter
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 118
Description = Infinite software loop detect
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 119
Description = Data direction register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 120
Description = Communication data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 121
Description = Timer data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 122
Description = Hardware watchdog data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 123
Description = Option data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 125
Description = Jumper for temperature controller missing
Cause/Corrective Action = The Err 125 fault code will be indicated on the digital displays if the jumper is loose or missing on the
control circuit board

Error = 126
Description = Pump overload on chiller
Cause/Corrective Action = The Err 126 fault code will be indicated on the digital displays if the pump overload has tripped. In orderto reset this fault; press the Alarm Reset button after resetting the pump overload inside the electrical enclosure.

Error = 127
Description = Compressor overload on chiller
Cause/Corrective Action = The Err 127 fault code will be indicated on the digital display if the internal compressor motor winding thermostat or the external compressor motor overload has tripped. This fault will also shut off the pump.
The internal compressor motor winding thermostat will automatically reset when the temperature drops back into the normal operating range. The external compressor motor overload must be manually reset.
The compressor motor overload is located inside the electrical enclosure. Once the internal compressor motor winding thermostat resets and/or the external compressor overload has been reset, press the Alarm Reset button to reset the fault.

Error = 128
Description = Chiller high temperature safety
Cause/Corrective Action = The Err 128 fault code will be indicated on the digital displays if the chiller has been shut off due to the high temperature safety.
This safety will shut off both the pump and compressor. This safety is triggered if the To Process temperature rises more than 10°F (5.5°C) above the maximum operating temperature for that particular chiller.
The maximum operating temperature for each chiller is noted on the nameplate. The To Process temperature must be over the limit for three minutes before this safety will be triggered, and the fault is defeated for a period of thirty minutes from the time the Start button is pressed or the Set
Point temperature is changed. Pressing the Alarm Reset button will reset this fault.

Error = 129
Description = Input Contact Chatter
Cause/Corrective Action =

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