The temperature of the indoor tube is higher than the set value
The temperature of the indoor tube is higher than the set value
The tube temperature is abnormal in cooling or heating
Indoor fan stop or run abnormally
Open circuit or short circuit of outdoor room temperature sensor
Open circuit or short circuit of outdoor exhaust gas temperature
The driver module protect happen three times in 30 minutes.
Outdoor DC fan motor stop or run abnormally
System can't collect current data normally.
EEPROM data receive failed
PCB can't collect EEPROM data normally.
The temperature of compressor housing top is more high or
System can't collect current voltage data normally.
Open circuit or short circuit of outdoor exhaust gas temperature
Compressor input voltage lack of phase
P1: Protection shutdown when voltage is higher than 275V or lower than 160V
Treatment Method: (voltage detection circuit in the inverter module board)
1. Use the multi‐meter to test whether the power supply between Phases A, B and C and Neutral Line is among
180V‐260V;
2. Whether the module communication line is reliably connected with the communication interface of main
control panel;
3. Whether the power supply module is reliably connected with filter boards L and N;
4. Replace the inverter module board;
5. Replace the motherboard of outdoor unit
P4: Inverter Compressor Exhaust High Temperature Protection
Treatment Method:
1. Test whether the compressor exhaust temperature is normal (below 115°);
2. If it is normal, please test whether the resistance of exhaust temperature sensor is consistent
with that in attached page (Annex 4);
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