Mitsubishi Electric City Multi PFAV-P500VMH-E, Service Handbook

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[
X
Troubleshooting ]
- 126 -
HWE07150 GB
1. Error Code
Open-circuited IPM/Loose ACCT connector (Detail code 119)
2. Error definition and error detection method
Presence of enough current cannot be detected during the self-diagnostic operation immediately before inverter startup.
3. Cause, check method and remedy
Refer to section - 6 -"Inverter" under part [4] "Trouble shootiong principal parts" for error codes related to the
inverter.(page 172)
1. Error Code
Faulty ACCT wiring (Detail code 120)
2. Error definition and error detection method
Presence of target current cannot be detected during the self-diagnostic operation immediately before startup. (Detection of
improperly mounted ACCT sensor)
3. Cause, check method and remedy
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 172)
5301
Cause Check method and remedy
(1) Inverter output wiring problem Check output wiring connections.
Confirm that the U- and W-phase output cables are put through CT12
and CT22 on the INV board respectively.
(2) Inverter failure Refer to
X
[4]-6-(2) [3], [4].(page 175)
(3) Compressor failure Refer to
X
[4]-6-(2) [2].(page 174)
5301
Cause Check method and remedy
(1) Inverter output wiring problem Check output wiring connections.
Confirm that the U- and W-phase output cables are put through CT12
and CT22 on the INV board respectively.
(2) Inverter failure Refer to
X
[4]-6-(2) [3], [4].(page 175)
(3) Compressor failure Refer to
X
[4]-6-(2) [2].(page 174)