How To Test A Washer Motor Control Board

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If you lot're dealing with a Whirlpool Duet Sport forepart load washer (also sold under the Maytag and Kenmore brands) that just beeps when you lot press the start push button but doesn't lock the door or run, it can be tricky to figure what the trouble is. The prime number suspects are: CCU (cardinal control unit), MCU (motor control unit), and the door latch associates. Academy Fellow Trying to help offers this tip for checking the MCU to determine whether information technology'southward the cause of the problem or not. If it checks practiced, you take ii other suspects to exam but at least you lot've eliminated one of them! OTOH, if the MCU tests bad, you tin can buy the replacement MCU here with a one year, no-hassle return policy, look up your verbal lath past the model number of your washer.

Yes, there is a 3 wire blue harness that runs from the CCU (Fundamental Control Unit) to the MCU (Motor Control Unit) I believe information technology is the M3 connector. Unplug that connector at either stop and permit it hang. Now hit starting time, if the unit of measurement locks the door and acts like information technology is going to have off on information technology's trivial merry way, you have a bad motor control board. Chances are with this disconected after a infinitesimal or then a code will popular, merely you lot will already have your answer. At the moment of start the CCU looks for two signals, door lock and motor control. If it does not see what information technology likes it tripple beeps. Removing the harness eliminates the bad signal. It will lock the door now and sit at that place looking for the MCU signal. No indicate is better than a bad bespeak! Brand sure you lot ohm your motor to verify information technology is not shorted and the source of the blown lath though!

Hither's the MCU examination technique illustrated:

and Brother PDuff shares this old tech tip for checking the CCU:

Old tech trick for checking CCU's was to unplug unit of measurement and plug dorsum in. If yous hear a click from the CCU then the CCU was usually ok. But I recall these new CCU's are onto that trick. All the same researching that switch at access panel. I don't know if information technology would cause a trouble simply it has attracted my attending. Volition advise.

Source: maytag front load washer (whirlpool) doesnt start just beeps