Power Supply Signal Sync Error - Mitsubishi Electric CMB-WP1016V-GA1 Service Handbook

[ VIII Troubleshooting ]
4115
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
Coil problem
Circuit 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
HWE1410A
Cause Check method and remedy
Check the voltage of the power supply terminal
block (TB1).
Check the coil connections.
Check for coil burnout.
Confirm 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.
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