Open-Circuited Ipm/Loose Acct Connector; Faulty Acct Wiring - Mitsubishi Electric CMB-WP1016V-GA1 Service Handbook

[ VIII Troubleshooting ]
1. Error Code
5301
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
Cause
(1) Inverter output wiring problem
(2) Inverter failure
(3) Compressor failure
Refer to the page on troubleshooting of inverter in outdoor unit service handbook.
1. Error Code
5301
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
Cause
(1) Inverter output wiring problem
(2) Inverter failure
(3) Compressor failure
Refer to the page on troubleshooting of inverter in outdoor unit service handbook.
HWE1410A
Check method and remedy
Check output wiring connections.
Confirm that the U- and W-phase output cables are put through CT12
and CT22 on the INV board respectively.
Refer to the page on troubleshooting of inverter in outdoor unit ser-
vice handbook
Refer to the page on troubleshooting of inverter in outdoor unit ser-
vice handbook
Check method and remedy
Check output wiring connections.
Confirm that the U- and W-phase output cables are put through CT12
and CT22 on the INV board respectively.
Refer to the page on troubleshooting of inverter in outdoor unit ser-
vice handbook
Refer to the page on troubleshooting of inverter in outdoor unit ser-
vice handbook
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