Power Supply Signal Sync Error; Rpm Error/Motor Error - Mitsubishi Electric PUHY-RP200 Service Handbook

[ IX Troubleshooting ]
1. Error Code
4115

Power supply signal sync error

2. Error definition and error detection method
The frequency cannot be determined when the power is switched on.
3. Cause, check method and remedy
(1) Power supply error
(2) Noise filter problem
ŒCoil problem
ŒCircuit board failure
(3) Faulty wiring
(4) Wiring failure
Between noise filter CN3 and noise filter CN2 and con-
trol board CNAC
(5) Control board failure
1. Error Code
4116

RPM error/Motor error

2. Error definition and error detection method
ŒLOSSNAY
The motor keep running even if the power is OFF.
The thermal overload relay is ON. (Only for the three-phase model)
ŒIndoor 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
HWE10010
Cause
Cause
Check method and remedy
Check the voltage of the power supply terminal
block (TB1).
ŒCheck the coil connections.
ŒCheck for coil burnout.
ŒConfirm that the voltage at the CN3 connector is
198 V or above.
Check fuse F01 on the control board.
Confirm that the voltage at the control board con-
nector CNAC is 198 V or above.
If none of the items described above is applicable,
and if the trouble reappears even after the power is
switched on again, replace the control board.
Check method and remedy
Replace the board.
Check for the motor and the solenoid switch.
- 168 - GB