Disclaimers

  1. This page provides a simple explanation concerning content relating to error codes and their possible causes. Please note that the content may slightly differ depending on models.
  2. 212 HVAC assumes no responsibility for any accidents or troubles caused in the disassembly or repair of equipment performed according to information on this page.

Caution

If molded case circuit breakers or earth leakage circuit breakers have tripped, do not reset the breaker immediately without first checking forany problems with insulation of equipment.

Resetting breakers without a check of insulation may cause damage to equipment.

Carrier air conditioning error codes

Indoor Error Codes:

CODE: E0

RESULT: Indoor unit EEPROM parameter error.

CODE: E1

RESULT:Indoor / outdoor units communication error.

CODE: E3

RESULT: Indoor fan speed has been out of control.

CODE: E4

RESULT: Indoor room temperature sensor T1 open circuit or short circuit.

CODE: E5

RESULT: Evaporator coil temperature sensor T2 open circuit or short circuit.

CODE: EC

RESULT: Refrigerant Leakage Detection.

CODE: F1

RESULT : Outdoor ambient temperature sensor T4 open circuit or short circuit.

CODE: F2

RESULT: Condenser coil temperature sensor T3 open circuit or short circuit.

CODE: F3

RESULT : Compressor discharge temperature sensor T5 open circuit or short circuit.

CODE: F4

RESULT: Outdoor unit EEPROM parameter error.

CODE: F5

RESULT : Outdoor fan speed has been out of control.

CODE: P0

RESULT: IPM malfunction or IGBT over-strong current protection.

CODE:  P1

RESULT: Over voltage or over low voltage protection.

CODE: P2

RESULT: High temperature protection of compressor top diagnosis and solution.

CODE: P4

RESULT: Inverter compressor drive error.

CODE:  P5

RESULT: Mode conflict.

CODE: P6

RESULT: Compressor voltage protection.

Outdoor Error Codes:

CODE: E0

RESULT: Outdoor EEPROM malfunction.

CODE: E2

RESULT: Indoor/outdoor units communication error.

CODE: E3

RESULT: Compressor run winding is open./Compressor no properly wired to control./Faulty compressor wiring.

CODE: E4

RESULT: Open or short circuit of outdoor unit temperature sensor.

CODE: E5

RESULT: Voltage protection.

CODE: E8

RESULT: Outdoor fan speed malfunction.

CODE: F1

RESULT: No A Indoor unit coil outlet temperature sensor or connector of sensor is defective.

CODE: F2

RESULT : No B Indoor unit coil outlet temperature sensor or connector of sensor is defective.

CODE: F3

RESULT: No C Indoor unit coil outlet temperature sensor or connector of sensor is defective.

CODE: F4

RESULT: No D Indoor unit coil outlet temperature sensor or connector of sensor is defective.

CODE: F5

RESULT: No E Indoor unit coil outlet temperature sensor or connector of sensor is defective.

CODE: P1

RESULT : High pressure protection.

CODE: P2

RESULT: Low pressure protection.

CODE: P3

RESULT: Current protection of compressor.

CODE: P4

RESULT: Temperature protection of compressor.

CODE: P5

RESULT: High temperature protection of condenser.

CODE: P6

RESULT: IPM module protection.

Got a tip, or other story our readers should see?

TELL US ABOUT IT!