Derby Air Conditioner Error Codes

Air conditioner brand Derby is very convenient. For Derby air conditioner troubleshooting you will need the error codes that will appear on the display in the case of a malfunction. The table below will help you to understand the meaning of these codes and find ways how you can fix the error yourself.

E0EEPROM parameter error
E1Indoor / outdoor units communication protection
E2Zero-crossing signal error
E3Fan speed out of control
E5Open or short circuit of outdoor temperature sensor (T4)
E6Open or short circuit of room (T1 ) or evaporator temperature sensor (T2)
P0Outdoor PCB protection
P1Over voltage or too low voltage protection
P2Temperature protection of compressor top.
P4Inverter compressor drive error

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