Mitsubishi Electric PUHY-P72 Service Manual page 177

[ IX Troubleshooting ]
1. Error Code
4116
RPM error/Motor error
2. Error definition and error detection method
LOSSNAY
The motor keep running even if the power is OFF.
The thermal overload relay is ON. (Only for the three-phase model)
Indoor unit
If detected less than 180rpm or more than 2000rpm, the indoor unit will restart and keep running for 3 minutes.If detected
again, the display will appear.
3. Cause, check method and remedy
(1) Board failure
(2) Motor malfunction
(3) Solenoid switch malfunction
HWE0804A
Cause
- 168 -
Check method and remedy
Replace the board.
Check for the motor and the solenoid switch.
GB