Carrier AC Error Code with description

Carrier AC Error Code
Error Description
E0Indoor unit EEPROM parameter error
E1Indoor / outdoor units communication error
E3Indoor fan speed has been out of control
E4Indoor room temperature sensor T1 open circuit or shortcircuit
E5Evaporator coil temperature sensor T2 open circuit or short circuit
ECRefrigerant Leakage Detection
F1Outdoor ambient temperature sensor T4 open circuit or short circuit
F2Condenser coil temperature sensor T3 open circuit or short circuit
F3Compressor discharge temperature sensor T5 open circuit or short circuit
F4Outdoor unit EEPROM parameter error
F5Outdoor fan speed has been out of control
P0IPM malfunction or IGBT over-strong current protection
P1Over voltage or over low voltage protection
P2High temperature protection of compressor top diagnosis and solution
P4Inverter compressor drive error
P5Mode conflict
P6Compressor voltage protectio

The error message is shown at the OUTDOOR UNIT CONTROLLER as following table:

Outdoor Temperature Sensor Failure

Ambient temperature sensorE0
Inlet coil temperature sensorE1
Suction temperature sensorE2
Mid coil temperature sensorE3
DLT Digital Compressor sensorE4

Outdoor Status Error

Communication error between indoor & outdoor unit controllersLE
High pressure statusKP
Low pressure statusLP
Over current0[
Green zone (Compressor over heat)D0
Yellow zone (Compressor over heat)D1
Red zone (Digital Compressor over heat)D2
Evacuation processF2
Pump downF1
Test modeF0
Oil belancingOB
Oil recoveryOR
HP or LP system offF3

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