Mitsubishi Electric PUHY-P250YNW-A Service Handbook page 166

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-6 Error Code [5301] Detail Code 115
1. Error code definition
ACCT sensor fault (Detail code 115)
2. Error definition and error detection method
When the formula "output current < 1.8 Arms" remains satisfied for 10 seconds while the inverter is in operation.
3. Cause, check method and remedy
Cause
(1) Contact failure
(2) INV output phase loss
(3) ACCT sensor failure
(4) Compressor failure
(5) INV board failure
For inverter-related error codes, refer to the following page(s). [8-9 Troubleshooting Inverter Problems]
7-7-7 Error Code [5301] Detail Code 117
1. Error code definition
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
For inverter-related error codes, refer to the following page(s). [8-9 Troubleshooting Inverter Problems]
BS_07_C
Check the connector (CNCT2) on the INV board for proper connection.
Check the output wire for proper connection.
Refer to the following page(s).
[8-9-14 Simple Check on Inverter Circuit Components]
Refer to the following page(s).
[8-9-3 Checking the Compressor for Ground Fault and Coil Resistance Prob-
lems]
Replace the INV board if the problem persists after the operation is resumed.
Check method and remedy
Refer to the following page(s).
[8-9-2 Checking the Inverter Board Error Detection Circuit]
[8-9-4 Checking the Inverter for Damage at No-Load]
[8-9-5 Checking the Inverter for Damage during Compressor Operation]
Refer to the following page(s).
[8-9-3 Checking the Compressor for Ground Fault and Coil Resistance Problems]
Check method and remedy
33
chapter 7 -