Mitsubishi Electric PURY-P72 Service Handbook page 231

[ 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 model
Cause
(1) Inverter open output phase
(2) Compressor failure
(3) INV board failure
P96 and P120 models
Cause
(1) Inverter open output phase
(2) Compressor failure
(3) INV board failure
(4) Contact failure
(5) ACCT sensor failure
Refer to section -7-"Inverter (THMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 293)
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 -7-"Inverter (YHMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 301)
HWE0803A
Check method and remedy
Check the output wiring connections.
Refer to IX [4] -7- (2) [2].(page 295)
Refer to IX [4] -7- (2) [1], [3], [4].(page 295)
Check method and remedy
Check the output wiring connections.
Refer to IX [4] -7- (2) [2].(page 295)
Refer to IX [4] -7- (2) [1], [3], [4].(page 295)
Check the connection of the connector (CNCT2) on the INV board-
INV board.
Refer to IX [4] -7- (4).
Check method and remedy
Check the output wiring connections.
Refer to IX [4] -7- (2) [2].(page 303)
Refer to IX [4] -7- (2) [1], [3], [4].(page 303)
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