9.2.6 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0)
Error Code
P0
Malfunction decision
conditions
When the voltage signal that IPM send to compressor drive chip
is abnormal, the display LED will show “P0” and AC will turn off.
Supposed causes
●
Wiring mistake
●
IPM malfunction
●
Outdoor fan ass’y faulty
●
Compressor malfunction
●
Outdoor PCB faulty
Trouble shooting:
Check the wiring between main PCB
and compressor
Correct the connection or replace
the wires and connectors.
Yes
No
Check the IPM
No
Yes
Replace the IPM board or replace
the main PCB
Check the outdoor fan and the
outdoor unit ventilation
No
Please refer to the solution of
【
Fan
Speed Has Been Out Of Control
】
malfunction
Yes
Check the compressor resistance
values
No
Replace the compressor.
Yes
Replace the outdoor main PCB
I
PM continuity check
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital
tester to measure the resistance between P and UVWN; UVW and N.
Digital tester
Normal resistance value
Digital tester
Normal resistance value
(+)Red
(-)Black
∞
(Several MΩ)
(+)Red
(-)Black
∞
(Several MΩ)
P
N
U
N
U
V
V
W
W
(+)Red
Содержание Aurora MOF-24HFN1-QRD0GW
Страница 1: ...Aurora 3D Inverter Series Service Manual 2014 ABSEU A1 1410...
Страница 9: ......
Страница 12: ...5 Wiring Diagram 5 1 Indoor Unit MSABAU 09HRDN1 QRC8GW MSABBU 12HRDN1 QRC8GW MSABDU 18HRDN1 QRC8GW...
Страница 13: ...MSABEU 24HRDN1 QRC8GW...
Страница 14: ...5 2 Outdoor Unit MOZ 09HFN1 QRD0GW MOZ 12HFN1 QRD0GW...
Страница 15: ...MOZ1 18HFN1 QRDOGW...
Страница 16: ...MOF 22HFN1 QRD0GW...
Страница 23: ...Be sure to check for gas leakage...