Error Code [5301] Detail Code 119 (Tlmu) - Mitsubishi Electric R410A Service Handbook

[7-6 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-6-11

Error Code [5301] Detail Code 119 (TLMU)

1. Error code definition
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
P72, P96, P120, P144 models
Cause
(1) Inverter output wiring problem
(2) Inverter failure
(3) Compressor failure
P168 model
Cause
(1) ACCT sensor disconnection
(2) ACCT sensor failure
(3) Inverter failure
(4) Compressor failure
For inverter-related error codes, refer to the following page(s). [8-9 Troubleshooting Inverter Problems (TLMU)](page 264)
HWE14080
Check method and remedy
Check output wiring connections.
Confirm that the U- and W-phase output cables are put through CT11
and CT12 on the INV board respectively.
Refer to the following page(s).
[8-9-4 Checking the Inverter for Damage at No-Load](page 267)
[8-9-5 Checking the Inverter for Damage during Compressor Opera-
tion](page 268)
Refer to the following page(s).
[8-9-3 Checking the Compressor for Ground Fault and Coil Resis-
tance Problems](page 266)
Check method and remedy
Check the connection of the connector (CNCT2) on the INV board.
Check for proper mounting of ACCT.
Refer to the following page(s).
[8-9-13 Simple Check on Inverter Circuit Components](page 272)
Refer to the following page(s).
[8-9-4 Checking the Inverter for Damage at No-Load](page 267)
[8-9-5 Checking the Inverter for Damage during Compressor Opera-
tion](page 268)
Refer to the following page(s).
[8-9-3 Checking the Compressor for Ground Fault and Coil Resis-
tance Problems](page 266)
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