Carrier Air Conditioner Error Codes

The printed circuit boards existing inside the indoor unit are equipped with self-diagnostic function to detect malfunction and automatically stops the operation at the air conditioner after blinking of power or timer led as per malfunction.

Wall Mounted Air Conditioner Error Codes

Indoor Error Codes:

Error Code: E0 Indoor unit EEPROM parameter error

Error Code: E1 Indoor / outdoor units communication error

Error Code: E3 Indoor fan speed has been out of control

Error Code: E4 Indoor room temperature sensor T1 open circuit or shortcircuit

Error Code: E5 Evaporator  coil  temperature  sensor  T2  open  circuit  or short circuit

Error Code: EC Refrigerant Leakage Detection

Error Code: F1 Outdoor  ambient  temperature  sensor  T4  open  circuit  or short circuit

Error Code: F2 Condenser  coil  temperature  sensor  T3  open  circuit  or short circuit

Error Code: F3 Compressor   discharge   temperature   sensor   T5   open circuit or short circuit

Error Code: F4 Outdoor unit EEPROM parameter error

Error Code: F5 Outdoor fan speed has been out of control

Error Code: P0 IPM malfunction or IGBT over-strong current protection

Error Code: P1 Over voltage or over low voltage protection

Error Code: P2 High temperature protection of compressor top diagnosis and solution

Error Code: P4 Inverter compressor drive error

Error Code: P5 Mode conflict

Error Code: P6 Compressor voltage protection

Outdoor Error Codes:

Error Code: E0 Outdoor EEPROM malfunction

Error Code: E2 Indoor/outdoor units communication error

Error Code: E3 Communication malfunction between IPM board and outdoor main board

Error Code: E4 Open or short circuit of outdoor unit temperature sensor

Error Code: E5 Voltage protection

Error Code: E8 Outdoor fan speed malfunction

Error Code: F1 No A Indoor unit coil outlet temperature sensor or connector of sensor is defective

Error Code: F2 No B Indoor unit coil outlet temperature sensor or connector of sensor is defective

Error Code: F3 No C Indoor unit coil outlet temperature sensor or connector of sensor is defective

Error Code: F4 No D Indoor unit coil outlet temperature sensor or connector of sensor is defective

Error Code: F5 No E Indoor unit coil outlet temperature sensor or connector of sensor is defective

Error Code: P1 High pressure protection

Error Code: P2 Low pressure protection

Error Code: P3 Current protection of compressor

Error Code: P4 Temperature protection of compressor

Error Code: P5 High temperature protection of condenser

Error Code: P6 IPM module protection

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Outdoor Check Function

00: Normal display

01: Number of indoor units in good connection

02: Outdoor unit running mode

03: A indoor unit capacity HP

04: B indoor unit capacity HP

05: C indoor unit capacity HP

06: D indoor unit capacity HP

07: E indoor unit capacity HP

08: A Indoor unit capacity demand code

09: B Indoor unit capacity demand code

10: C Indoor unit capacity demand code

11: D Indoor unit capacity demand code

12: E Indoor unit capacity demand code

13: Total indoor units amendatory capacity demand code

14: Target frequency corresponding to the total indoor units amendatory capacity demand

15: Target frequency after the frequency limit

16: Target frequency sending to compressor control chip

17: A indoor unit evaporator outlet temp.

18: B indoor unit evaporator outlet temp.

19: C indoor unit evaporator outlet temp

20: D indoor unit evaporator outlet temp.

21: E indoor unit evaporator outlet temp.

22: A indoor unit room temp.

23: B indoor unit room temp.

24: C indoor unit room temp.

25: D indoor unit room temp.

26: E indoor unit room temp.

27: A indoor unit evaporator temp.

28: B indoor unit evaporator temp.

29: C indoor unit evaporator temp.

30: D indoor unit evaporator temp.

31: E indoor unit evaporator temp.

32: Condenser pipe temp.(T3)

33: Outdoorambient temp.(T4)

34: Compressor discharge temp.(Tp)

35: AD value 0f current

36: AD value of voltage

37: EEV open angle forA indoor unit

38: EEV open angle for B indoor unit

39: EEV open angle for C indoor unit

40: EEV open angle for D Indoor unit

41: EEV open angle for E indoor unit

42: Frequency limit symbol

43: Average value of T2

44: Outdoor fan speed

45: The last error or protection code

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Judgment by Flashing LED of Indoor Unit

NOTES :

1. The contents of items B and C and a part of item E are displayed when air conditioner operates
2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
3. The check codes can be confirmed on the remote controller for servicing.

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Caution at Servicing

1. After servicing, push the [ Θ] button to return to the normal mode.
2. After servicing by the check code, turn off breaker of the power 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.

Error Code: 0C

Cause of operation: Short-circuit or disconnection of the room temperatur sensor (TA sensor).

Error Code: 0d

Cause of operation: Being out of place, disconnection, short-circuit, or migration of heat exchanger sensor (TC sensor)

Error Code: 11

Cause of operation: Lock of indoor fan or trouble on the indoor fan circuit

Error Code: 12

Cause of operation: Trouble on other indoor P.C. boards

Error 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

Error Code: 05

Cause of operation: Operation command signal is not sent to outdoor side.

Error Code: 14

Cause of operation: Inverter over-current protective circuit operates. (Short time)

Error Code: 16

Cause of operation: Position-detect circuit error or short-circuit between windings of compressor

Error Code: 17

Cause of operation: Current-detect circuit error

Error Code: 18

Cause of operation: Being out of place, disconnection or short- circuit of outdoor temp. sensor

Error Code: 19

Cause of operation: Disconnection or short- circuit of discharge temp. sensor

Error Code: 1A

Cause of operation: Outdoor fan drive system error

Error Code: 1b

Cause of operation: Outdoor heat exchanger temp. sensor error

Error Code: 1C

Cause of operation: Compressor drive output error, Compressor error (lock, missing, etc.), Break down

Error Code: 07

Cause of operation: Return serial signal has been sent when operation started, but it is not sent from halfway.

Error Code: 1d

Cause of operation: Compressor does not rotate.

Error Code: 1E

Cause of operation: Discharge temp. exceeded 117°C

Error Code: 1F

Cause of operation: Break down of compressor

Error Code: 08

Cause of operation: Four-way valve inverse error

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Carrier X-Power Inverter Error Codes;

Outdoor unit:

Code: 1 Heat exchanger sensor (TE) error

Code: 2 Suction sensor (TS) error

Code: 3 Hot gas discharge sensur (TD) ermr

Code: 4 High-pressure protemion error

Code: 5 Outdoor air temperature sensor error (TO)

Code: 6 Outdoor DC fan motor error

Code: 7 Communication error between IPDU (Abnormal stop)

Code: 8 High-pressure release operation

Code: 9 Discharge temp. error: hot gas is too high

Code: 10 EEPROM error

Code: 11 Communication error between IPDU (No abnormal stop)

Code: 12 G-Tr short-circuit protection

Code: 13 Detect circuit error

Code: 14 Current sensor error

Code: 15 Comp. lock error

Code: 16 Comp. break down

Indoor unit:

Code: 2 Condensate Pump Failure or water drain Failure

Code: 3 Indoor unit Room Air sensor fault

Code: 4 Indoor unit Tc Coil sensor fault

Code: 10 Indoor unit software fault (EEPROM Corrupt)

Code: 12 Indoor unit software fault (Address/Zone Corrupt)

Code: 14 Loss of Signal From CDU

Code: 15 Indoor unit Tcj Coil sensor fault

Code: 18 Outdoor unit control box fault (G-Tr short circuit protection)

Code: 20 Position Detection Circuit Error

Code: 21 Outdoor unit Current Sensor fault

Code: 22 Outdoor unit Heat Exchange Sensor fault

Code: 23 Outdoor unit Discharge Temperature Sensor fault

Code: 24 Outdoor unit Fan fault

Code: 26 Other Outdoor unit fault

Code: 27 Outdoor unit Compressor Lock

Code: 28 Outdoor unit Discharge Temperature fault

Code: 29 Outdoor unit Compressor Breakdown

Code: 31 Outdoor unit High TemperatureiPressure Release

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Carrier Infinity Series AC Error Codes

The codes are flashed by a series of short and long flashes of the status light. The short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the error code. The short flash is 0.25 seconds ON and the long flash is 1.0 second ON. Time between flashes is 0.25 seconds. Time between short flash and first long flash is 1.0 second. Time between code repeating is 2.5 seconds with LED OFF. Count the number of short and long flashes to determine the appropriate flash code. Table 6 gives possible causes and actions related to each error.

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Carrier Window Room AC Error Codes

Operate the fan without cooling until the frost disappears.

E1: Loss of communication between the CCC 2 thermostat and an individual system power module board. The LED will display error code EI and the zone number that lost communication. Any additional zones that loose communication will blink in addition to the current zone.

E2: Open circuit or out-of-range indoor temperature sensor. All heat , cool, and dehumidify operations will be locked out. Manual fan operation will continue.

E3: Indoor Temperature Sensor. All heat, cool, and dehumidify operation will be locked out. Manual fan operation will continue.

E4: Open circuit or out of range Outdoor Temperature Sensor (select models). Heat pump and dehumidification operation will be locked out. Air conditioner, furnace, heat strip and fan operation can continue to operate.

E5: Open circuit or out of range Freeze Sensor. Air conditioner and dehumidification operation will be locked out. Heat pump, furnace, heat strip and fan operation can continue to operate but displays the last temperature set-point.

E6: Open circuit Humidity Sensor (Select Models). Air conditioner and dehumidification will be locked out. Heat pump, furnace heat strip and fan can continue to operate.

E7: Loss of 120 VAC power to all power module boards on the system. The system will shut down.

E8: Invalid zone configuration. The heat pump and heat strip DIP switches are both set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone.

E9: Invalid zone configuration. The dehumidifier DIP switch and either the heat pump or heat strip DIP switches are set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone.

Sometimes a breaker will look like it is in the operating position but is actually tripped. Be sure to flip the breaker lever to ‘OFF’ and then back to “ON’ with the corresponding click.

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Other Error Codes

nF: Air Filter Replacement Reminder: After 2,880 hours of use, the display window on the indoor unit will flash “nF.” This is a reminder to replace your filter. After 15 seconds, the unit will revert to its previous display. To reset the reminder, press the LED button on your remote control 4 times, or press the MANUAL CONTROL button 3 times. If you don’t reset the reminder, the “nF” indicator will flash again when you restart the unit.

CL: Air Filter Cleaning Reminder: After 240 hours of use, the display window on the indoor unit will flash “CL.” This is a reminder to clean your filter. After 15 seconds, the unit will revert to its previous display. To reset the reminder, press the LED button on your remote control 4 times, or press the MANUAL CONTROL button 3 times. If you don’t reset the reminder, the “CL” indicator will flash again when you restart the unit.

EC: Refrigerant Leakage Detection: The indoor unit will automatically display “EC” The “timer” indicator light turns off and the “run” indicator light flashes 7 times when the unit detects refrigerant leakage.

How to use remote controller in service mode?

 

 Carrier Split Air Conditioner Manual PDF 1

Carrier Split Air Conditioner Manual PDF 2

Carrier Split Air Conditioner Manual PDF 3

Carrier Infinity Series Manual PDF

Carrier Performance Series Error Codes and Troubleshooting

Carrier Cassette Air Conditioner Error Codes

Source: https://www.carrier.com