Midea MS9A-09HRDN1-MP0W - Outdoor Unit Error Diagnosis

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9.1 Indoor Unit Error Display
Display
LED STATUS
E0
EEPROM parameter error
E1
Indoor / outdoor units communication protection
E2
Zero-crossing signal error
E3
Indoor fan speed has been out of control
E5
Open circuit or short circuit of outdoor temperature sensor or outdoor unit
EEPROM parameter error
E6
Open circuit or short circuit of room or evaporator temperature sensor
E7
Outdoor fan speed has been out of control(only for
MS9A-09HRDN1-BQ0W, MS9A-12HRDN1-BS0W(B),
MS9A-09CRDN1-BS0W, MS9A-12CRDN1-BS0W,
MS9A-09HRDN1-BS0W, MS9A-12HRDN1-BS0W,
MS9A-18CRDN1-MS0W, MS9A-12HRDN1-MS0W,
MS9A-18HRDN1-MS0W)
P0
IPM malfunction or IGBT over-strong current protection
P1
Over voltage or too low voltage protection
P2
Temperature protection of compressor top.(except
MS9A-24HRDN1-MP0W 2T0033000364, MS9A-24HRDN1-MS0W
2T0033000389)
P3
Outdoor temperature is lower than 15 ℃ （optional function）
P4
Inverter compressor drive error
Note: E4 & P3: Reserved function.
Note
P3: If the outdoor temperature <= -15 °C for 1 hour, then the machine stops running, the indoor display
shows the error code "P3“. The unit can still receive remote control signals.
If the outdoor >= -12 °C for 10 minutes, the compressor stops running more than one hour,
Or the outdoor temperature>= 5 ℃ for 10 minutes, then AC will recover to the last mode and fan
speed.