Code CR2AG-P1 US Power Supply

DC over voltage of over low voltage protection when indoor unit displays p1 which indicates over voltage or over low voltage protection malfunction decision conditions an abnormal voltage rise or drop is detected by checking the specified voltage detection circuit the failure could be caused by one power supply error - system leakage or block 3 faulty PCB [Music] check whether the voltage is normal if the voltage is abnormal and stop the unit if the voltage is normal check whether the power wires of the terminal in indoor units and signal wires are good if not correct the connections or replace the wires after confirmation that the wire is good when the unit is in standby model check if the voltage between P and n is around three hundred and ten volts then startup the units and the compressor starts so running measure the voltage between P and n and see if it's within 220 volts to 400 v