Mitsubishi Electric PUZ-A18NHA6 Service Manual page 37

Abnormal point and detection method
Check code
Outdoor fan motor
Overvoltage error
Undervoltage error
Input current sensor error/
L1-phase open error
Abnormal power synchronous
signal
PFC error (Overvoltage/
Undervoltage/Overcurrent)
(A12–24N only)
Case
1
2
:
1
2
3
4
1
2
3
4
5
6
1
2
1
2
3
1
2
3
Judgment and action
1
2
3
1
1
2
3
4
1
2
3
4
5
6
1
2
1
2
3
1
2
3