Mitsubishi Electric PUHY-HP120TNU-A, Service Handbook, Page: 238 / 324

[8-9 Troubleshooting Inverter Problems ]
HWE18240_GB chapter 8 -
41
8 Troubleshooting Based on Observed Symptoms
INV board outline drawing
<INV42Y>
Reference resistance value
Black (+)
SC-P CN-N SC-L1 SC-L2 SC-L3L
Red (-)
SC-P - - 5-200
ȍ
5-200
ȍ
5-200
ȍ
CN-N - -
’ ’ ’
SC-L1
’
5-200
ȍ
- - -
SC-L2
’
5-200
ȍ
- - -
SC-L3
’
5-200
ȍ
- - -
Black (+)
SC-P1 CN-N SC-U SC-V SC-W
Red (-)
SC-P1 - - 5-200
ȍ
5-200
ȍ
5-200
ȍ
CN-N - -
’ ’ ’
SC-U
’
5-200
ȍ
- - -
SC-V
’
5-200
ȍ
- - -
SC-W
’
5-200
ȍ
- - -
SC-L1
SC-L2
SC-L3
SC-U
CN-N
SC-P
SC-P1
SC-V
SC-W