Panasonic S-160PE1R5B Technical Data & Service Manual page 178

H01 Primary (input) Overcurrent Detected
1. Error Detection Method
• Primary current effective value detected overcurrent (trip current value).
Trip current value
3-phase model
Heating
Cooling
2. Error Diagnosis
1 Power
1-1
supply*
1-2
1-3
1-4
2 PC board
2-1
wiring
2-2
5
2-3
* Check not only in the outdoor unit stop mode but in the drive mode.
ACXA73-3030* (U-160PZH2R8, U-180PZH2R8)
(for 3-phase outdoor Unit PCB)
6.5 HP 7 HP
13.5A 14.5A
13.5A 14.5A
Not satisfied with + 10% rated supply voltage
Extreme voltage fluctuations
Extreme distortion of voltage waveform
Instantaneous blackout may sometimes occur.
Has FUSE1-A / FUSE2 / FUSE3 blown?
Check the electrical conduction with tester.
Loose electrical wire connection
Replace CR board.
FUSE3 FUSE2
HP = horse power
8 HP 9 HP
18.0A 19.5A
15.5A 17.0A
ACXA73-3028* (U-200PZH2R8, U-224PZH2R8)
(for 3-phase outdoor Unit PCB)
CN-TD
5-14
HP = horse power
6.5 HP
Single-phase model
Heating
33.5A
Cooling
32.5A
Yes Check power supply.
No 1-2
Yes Check power supply.
No 1-3
Yes Check power supply.
No 1-4
Yes Check power supply.
No 2-1
2-3
Yes
No 2-2
Correct wiring.
Yes
No 2-3
FUSE3 FUSE2