Allied 4DHV Mini-Split Series - Error Codes and Troubleshooting; Error Code P1 Diagnosis

508067-01Issue 2016Page 70 of 75
Error Code: P1
Description: Over voltage or too low voltage protection diagnosis and solution)
General Note: Abnormal increases or decreases in voltage are detected by checking the specied voltage detection circuit.
NO
YES
NO
YES
NO
YES
NO
YES
Replace the reactor.
Check the power supply.
Is it in working order?
Turn off the unit.
Are they in working order?
Check the connecons and wires.
Ensure proper connecons or
replace the wires.
While the unit is in standby,
is the voltage between P and N is around
DC 310V, 340V or 380V? When start up
the unit, is it in 220V~400V?
Power on and measure the
voltage between P and N.
Replace the IPM board.
Is it in working order?
Check the reactor.
Replace outdoor PCB.