Pioneer WAE012AMFI15RL Service Manual page 55

9.4.8 Over voltage or too low voltage protection diagnosis and solution(P1)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
Check if the power supply is
normal.
Yes
Check if all the connections
and wires are good ?
Yes
Power on and when the unit is in
standby, check if the voltage
between P and N is around DC
310 V or 340V or 380V? For different
kinds of units, the voltage differs .
Consult with technical engineer to
get definite value. Then start up the
unit, measure the voltage between
P and N. Is it in 220V~400V?
Yes
Replace outdoor main PCB .
P1
An abnormal voltage rise or drop is detected by checking the
specified voltage detection circuit.
Power supply problems.
●
System leakage or block
●
PCB faulty
●
No
No
No
53
Disconnect the unit with power
supply and try to restart the unit
when power supply gets normal .
Correct the connections or replace
the wires.
Replace the IPM board if it is separate
with main PCB.
Remark:
Measure the DC voltage
between P and N (P and
L2 for 230V Systems)
port. The normal value
should be around 310V.