Error Code 5301 - Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook

[ IX Troubleshooting ]
1. Error Code
5301 (THMU-A)
ACCT sensor fault (Detail code 115)
2. Error definition and error detection method
When the formula "output current < 2 Arms" remains satisfied for 10 seconds while the inverter is in operation.
3. Cause, check method and remedy
P72 and P96 models
Cause
(1) Inverter open output phase
(2) Compressor failure
(3) INV board failure
Refer to section -6-"Inverter (THMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 328)
1. Error Code
5301 (YHMU-A)
ACCT sensor fault (Detail code 115)
2. Error definition and error detection method
When the formula "output current < 1.5 Arms" remains satisfied for 10 seconds while the inverter is in operation.
3. Cause, check method and remedy
Cause
(1) Inverter open output phase
(2) Compressor failure
(3) INV board failure
Refer to section -6-"Inverter (YHMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 333)
1. Error Code
5301
ACCT sensor circuit fault (Detail code 117)
2. Error definition and error detection method
When an error value is detected with the ACCT detection circuit just before the inverter starts
3. Cause, check method and remedy
Cause
(1) INV board failure
(2) Compressor failure
Refer to section -6-"Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.
HWE09080
Check method and remedy
Check the output wiring connections.
Refer to IX [4] -6- (2) [2].(page 330)
Refer to IX [4] -6- (2) [1], [3], [4].(page 330)
Check method and remedy
Check the output wiring connections.
Refer to IX [4] -6- (2) [2].
Refer to IX [4] -6- (2) [1], [3], [4].
Check method and remedy
Refer to IX [4] -6- (2) [1], [3], [4].
Refer to IX [4] -6- (2) [2].
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