Mitsubishi Electric PUHY-HP144TSHMU-A Service Handbook page 157

[ IX 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) ACCT sensor disconnection
(2) ACCT sensor failure
(3) Inverter failure
(4) Compressor failure
Refer to section - 6 -"Inverter" under part [4] "Trouble shootiong principal parts" for error codes related to the
inverter.(page 196)
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) Wrongly mounted ACCT sensor
(2) ACCT sensor failure
(3) Inverter failure
(4) Compressor failure
Refer to section - 6 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 196)
HWE0716A
Check method and remedy
Check the connection of the connector (CNCT2) on the INV board.
Check for proper mounting of ACCT.
Refer to 9 [4]-6-(4).(page 201)
Refer to 9 [4]-6-.(page 196)
Refer to 9 [4]-6-(2) [2].(page 198)
Check method and remedy
Check for proper mounting of ACCT.
Refer to 9 [4]-6-(4).(page 201)
Refer to 9 [4]-6-(4).(page 201)
Refer to 9 [4]-6-.(page 196)
Refer to 9 [4]-6-(2) [2].(page 198)
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