Over Voltage Or Too Low Voltage Protection Diagnosis And Solution - Pioneer CB009GMFILCFHD Service Manual

16.3.8 Over voltage or too low voltage protection diagnosis and solution (P1)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
Check the power supply
Yes
Check the connections and
wires
Yes
Check the voltage between P
and N
Yes
Check the reactor
Yes
Replace the reactor
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
No
99
Stop the unit
Correct the connections or
replace the wires.
Replace the IPM board
Replace outdoor main PCB
Remark:
Measure the DC voltage
between P and N port.
The normal value should
be around 310V.