Mitsubishi KXZ Series - 9.2 Explanation of troubleshooting

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217
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'20 • KX-T-373
• Inspection of short-circuit on the power transistor module terminals
Disconnect the wiring of compressor, P and N (TB5-9 in inverter PCB) and check for short-circuit with a tester..
Inspect between terminals of: P-U, P-V, P-W, N-U, N-V, N-W and P-N
(Replace the P and N as P3 and N3 respectively in single phase model.)
Terminal (+)
P
N
P
P
P
N
N
N
U
V
W
U
V
W
Terminal (
- )
N
P
U
V
W
U
V
W
P
P
P
N
N
N
Several 10 M
Several 10 M
Several 10 M
Several 100K
Several 100K
Several M
9.2 Explanation of troubleshooting