Haier MRV 5 Series Troubleshooting Manual page 28

Power on, measuring the voltage value of
CN10 with a multimeter DC20V
2
1
1&2:15V
W
V
U
P
Power off, the right measure method and value as below：
U(Red wire)→ P(black wire): 0.4~0.7V
P(Red wire)→ U(black wire): open
V(Red wire)→ P(black wire): 0.4~0.7V
P(Red wire)→ V(black wire): open
W(Red wire)→ P(black wire): 0.4~0.7V
P(Red wire)→ W(black wire): open
3
2
3&2 : 5V
Step3:
measure
N
W
V
U
Power off, the right measure method and value as below：
N(Red wire)→ W(black wire): 0.4~0.7V
W(Red wire)→ N(black wire):open
N(Red wire)→ V(black wire): 0.4~0.7V
V(Red wire)→ N(black wire): open
N(Red wire)→ U(black wire): 0.4~0.7V
U(Red wire)→ N(black wire): open
25