Phase sequence error |
Communication error between indoor and master unit |
T3/T4 temperature sensor error |
Abnormal power supply voltage |
Reserved |
Discharge temperature sensor error |
Outdoor unit address error |
EEPROM mismatch of compressor |
DC bus voltage error |
T6B temperature sensor error |
T6A temperature sensor error |
Electronic expansion valve connection error |
Communication error between main board and compressor drive board |
Quantity of outdoor unit decreases error |
Quantity of outdoor unit decreases error |
Inverter-module protection |
3 times of P2 protection in 60 minutes |
3 times of P2 protection in 60 minutes |
Quantity of indoor units mismatching |
High pressure sensor error |
10 times of P9 protection in 120 minutes |
Slave unit malfunction (y=1,2; e.g. 1Hd stands for slave unit 1 error) |
3 times of PL protection in 100 minutes |
High pressure protection or discharge temperature switch protection |
Low pressure protection |
Compressor current protection |
Discharge temperature protection |
High temperature protection of condenser |
Fan module protection |
Inverter module temperature protection |
Compressor discharge insufficient superheat protection |
Inverter compressor module error |
DC bus low voltage protection |
DC bus high voltage protection |
MCE error |
Zero speed protection |
Phase sequence protection |
Compressor frequency variation greater than 15 Hz within one second protection |
Actual compressor frequency differs from target frequency by more than 15 Hz protection |