Forum > Washer Repair

washer not going on high spin

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fairbank56:

  The date from the instruction manual for the WCSR4170G0CC is 2006, so it does have the brake resistor.

Eric

JWWebster:
FYI: I bypassed the magnetic lid switch on a few of em so far. It works fine.

fairbank56:

  The replacement motor/inverter part number for the OP's washer, WH20X10057, is in fact one of the new type motors without the brake resistor. Whether this washer came with this type is in question, easily determined by visual inspection of the motor.

  I have come across two technical bulletins concerning the new inverter motors. The first is dated August 2010 and the other is revised January 2011. It lists the old and new inverter motor part numbers. It also indicates that the wiring harness fuse link must be removed due to the higher in-rush current of the new motor design. A jumper wire kit is supplied with the new replacement motors. The drip shield over the top of the new motor covers the front of the inverter board which is why the error code LED was relocated to the right side.

Eric

fairbank56:

--- Quote from: JWWebster on October 12, 2012, 08:51:03 PM ---FB if the brake resister is not on the latest model did they go to a locking lid switch config?

--- End quote ---

  The brake resistor is not used for "braking" the motor, it is used to dissipate the power being regenerated by the slowing motor. There are other methods for taking care of this problem of an AC PWM motor acting as a generator when it is not being rotated by the applied power but being rotated by an external force, in this case of the spinning tub. If the resistor fails, the rpm of the motor is restricted to a very low speed so that when the spin cycle stops, the motor will quickly stop. This limits the regenerated power to prevent the inverter from being damaged. Doesn't do you much good though as you can't just buy a replacement resistor. You  have to replace the whole motor/inverter anyway  ::)

Eric

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