Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual page 28

Check Code Abnormal point and detection method
Open/short circuit of outdoor unit
temperature thermistor (TH4, TH34)
:
Open/short of outdoor unit thermistors
(TH3, TH32, TH6, TH7, and TH8)
Temperature of heatsink
Power module
OCH567
1
:
2
3
1
2
3
1
2
3
4
5
6
7
1
2
-
3
4
5
Case
1
2
3
1
:
:
2
3
12
3
4
:
-
5
6
7
1
2
3
4
5
Judgment and action
-
-