Mitsubishi Electric PQHY-P72ZLMU-A Service Handbook page 311

[ IX Troubleshooting ]
1. Error Code
7117
Model setting error
2. Error source, cause, check method and remedy
Error source
Heat source (1) Wiring fault
unit
(2) Loose connectors, short-circuit, con-
tact failure
HWE15150
Cause
(Detail code 15)
1)
(Detail code 14)
1)
(Detail code 12)
1)
2)
(Detail code 0, 1)
1)
2)
3)
4)
(Detail code Miscellaneous)
- 302 -
Check method and remedy
Check the connector CNTYP5 on the control board for
proper connection.
Check the connector CNTYP4 on the control board for
proper connection.
Check the connector CNTYP2 on the control board for
proper connection.
Check the connector CNTYP5 on the control board for
proper connection.
Check the wiring between the control board and INV
board. (Refer to the section on Error code 0403.)
Check the settings of SW5-3 through SW5-6 on the
control board.
Check the connector CNTYP5 on the control board for
proper connection.
Check the connector CNTYP4 on the control board for
proper connection.
*If a set-model-name identification error occurs, check
the detail code on the unit on which the error occurred.
The detail code that appears on other units will be dif-
ferent from the ones shown above.
GB