Panasonic S-45PU1E5 Technical Data & Service Manual page 318

P05 AC power supply trouble
1. Error Detection Method
• Instantaneous blackout
• Zero-cross (waveform input of power supply) error
• DC voltage charge failure
2. Error Diagnosis
Note : The work involved in diagnosing each of the items is extremely dangerous, so turn the power off at the breaker before
performing the tests.
1 Check
the power
1-1
supply &
the wiring
1-2
1-3
1-4
2 Check the
5
outdoor
2-1
unit CR
PC board
3 Check the
3-1
outdoor
unit HIC
PC board
3-2
4 Final check 4-1
Single-phase outdoor unit HIC PC board
Common in RE1 and RE2
*
4hp : Plug-in type
5hp, 6hp : Fastening screw type
Is the voltage on each of the
terminal boards within + 10%
of the rated voltage?
Power wiring N-phase is connected.
Power wiring L2 and N are reverse connected. (3-phase only)
Turn the power back on and check again.
Is the alarm triggered again?
The connector CN-PRY2 on the outdoor CR PC board is
connected properly (locked). (3-phase only)
Are the wires (RE1, RE2) from the reactor firmly installed?
Turn the power back on and check again.
Is the alarm triggered again?
There may be a instantaneous blackout failure.
If there is nothing abnormal, see what happens.
1-4 : Single-phase model
Yes
1-2 : 3-phase model
Check for open circuit and the voltage at the breaker.
No
if a problem is found, fix it and check again.
3-phase outdoor unit HIC PC board
RE1*
RE2*
(for 3-phase outdoor unit CR PC board)
5-46
Yes Correct wiring
No 1-3
Yes Correct wiring
No 1-4
3-1 : Single-phase model
Yes
2-1 : 3-phase model
No 4-1
Yes 3-1
Correct wiring
No
(connector)
Yes 3-2
No Correct wiring
Replace the outdoor
Yes
unit HIC PC board.
No 4-1
CN-PRY2
RE1
RE2