3. Mini VRF System Alarm Codes
H01 Primary Current (Input) Detect of Overcurrent
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
Not satisfied with + 10% rated supply voltage
1-1
supply*
1-2
Extreme voltage fluctuations
1-3
Extreme distortion of voltage waveform
1-4
Instantaneous blackout may sometimes occur.
2
PC board
Has FUSE 1 blown?
2-1
wiring
Check the electrical conduction with tester.
2-2
Loose electrical wire connection
2-3
Replace CR board.
*
Check not only in the outdoor unit stop mode but in the drive mode.
(for single-phase outdoor unit PC board)
hp = horse power
4 hp
5 hp
6 hp
23.0A
26.5A
30.0A
22.0A
25.0A
28.0A
FUSE 1
Trip current value
3-phase model
4 hp
Heating
10.5A
Cooling
10.5A
(for 3-phase outdoor unit PC board)
5 - 31
Mini VRF SYSTEM
Trouble Diagnosis
hp = horse power
5 hp
6 hp
12.0A
14.0A
12.0A
14.0A
Yes
Check power supply
No
1-2
Yes
Check power supply
1-3
No
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
FUSE 1
5