Mitsubishi Electric PURY-P72 Service Handbook page 233

[ IX Troubleshooting ]
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 -7-"Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.
HWE0803A
Check method and remedy
Refer to IX [4] -7- (2) [1], [3], [4].
Refer to IX [4] -7- (2) [2].
- 224 - GB