H01 Primary (Input) Overcurrent Detected - Panasonic R410A Service Manual

H01 Primary (input) overcurrent detected

1. Error Detection Method
•
Primary current effective value detected overcurrent (trip current value).
Trip current value
Single-phase model
Heating
Cooling
2. Error Diagnosis
1 Power
1-1
supply*
1-2
1-3
1-4
2 PC board
2-1
wiring
5
2-2
2-3
*
Check not only in the outdoor unit stop mode but in the drive mode.
A746894 : (U-60PE1R5, U-71PE1R5)
(for single-phase outdoor unit PCB)
A746845 : (U-125PE1R5, U-140PE1R5)
(for single-phase outdoor unit PCB)
2.5 hp 3 hp 4 hp
20.0A 20.0A 27.0A
18.5A 18.5A 27.0A
Not satisfied with + 10% rated supply voltage
Extreme voltage fluctuations
Extreme distortion of voltage waveform
Instantaneous blackout may sometimes occur.
Has FUSE 1/FUSE 2 blown?
Check the electrical conduction with tester.
Loose electrical wire connection
Replace CR board.
FUSE1
FUSE1
hp = horse power Trip current value
5 hp 6 hp 3-phase model
29.0A 30.0A Heating
29.0A 30.0A Cooling
A746844 : (U-100PE1R5)
(for single-phase outdoor unit PCB)
A746967 : (U-100PE1R8, U-125PE1R8, U-140PE1R8)
(for 3-phase outdoor unit PCB)
5-32
hp = horse power
4 hp 5 hp 6 hp
12.5A 13.5A 14.5A
12.0A 12.6A 13.0A
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
Yes Correct wiring
No 2-3
FUSE1
FUSE1