Error Code 3512
1. Error code definition
Cooling fan locking
2. Error definition and error detection method
The motor on the cooling fan locks during operation.
3. Cause, check method and remedy
Cause Check method and remedy
(1) Locked cooling fan motor Check the fan blades for objects obstructing the rotation of
the cooling fan.
(2) Cooling fan motor trouble Disconnect the wiring from the cooling fan motor, and check
the insulation resistance and the coil resistance of the motor.
Replace the motor if problems are found.
Criteria for insulation failure: Insulation failure if below 1 MΩ
Wire disconnection: Normal if coil resistance is between 56
and 65 Ω
(3) Contact failure Check the wiring between CN101 and CN63PW.
Check the wiring between CN24V and RY24V.
Check the RY24V terminal block for problems.
(4) Circuit board fault If no problems are found with the items above, replace the
control board and the PS board