Samurai Appliance Repair Man's Blog

If you're dealing with a Whirlpool Duet Sport front load washer (also sold under the Maytag and Kenmore brands) that just beeps when you press the start button but doesn't lock the door or run, it can be tricky to figure what the problem is. The prime suspects are: CCU (central control unit), MCU (motor control unit), and the door latch assembly. Academy Fellow Trying to help offers this tip for checking the MCU to determine whether it's the cause of the problem or not. If it checks good, you have two other suspects to test but at least you've eliminated one of them! OTOH, if the MCU tests bad, you can buy the replacement MCU here with a one year, no-hassle return policy, look up your exact board by the model number of your washer.

Yes, there is a 3 wire blue harness that runs from the CCU (Central Control Unit) to the MCU (Motor Control Unit) I believe it is the M3 connector. Unplug that connector at either end and let it hang. Now hit start, if the unit locks the door and acts like it is going to take off on it's little merry way, you have a bad motor control board. Chances are with this disconected after a minute or so a code will pop, but you 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 it likes it tripple beeps. Removing the harness eliminates the bad signal. It will lock the door now and sit there looking for the MCU signal. No signal is better than a bad signal! Make sure you ohm your motor to verify it is not shorted and the source of the blown board though!

Here's the MCU test 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 and plug back in.  If you hear a click from the CCU then the CCU was usually ok.  But I think these new CCU's are onto that trick.  Still researching that switch at access panel.  I don't know if it would cause a problem but it has attracted my attention.  Will advise.

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

This Public Service Announcement is brought to today by Brother fixyourboard of Fixyourboard.com fame, providing fast, expert rebuild and repair of NLA circuit boards:

After replacing evaporator fan and having the main board rebuilt ... the new fan wouldn't run. Well it turns out that the new fan comes with a new wire harness BUT it only applies to certain models. It swaps some wires around and if you install it on the wrong model the evaporator fan doesn't get power!!! It looks just like the orignal (unless you look closely at the pinout). It seems the fan doesn't ship with the WP instruction sheet. Fan p/n 8201589, board p/n 2252159 and brothers, jumper harness p/n 2221077.

This has got to have caused a lot of head bangin' ! ??

Here's the instruction sheet. Sorry it's a png. Site didn't let me attach the pdf.

[attachment=7201:8201590.png]

Here's the link to the PDF of the evaporator fan motor installation instructions:  http://appliantology...n-instructions/



Source: KSSS42FK KA Built In Evap Fan not running after board/fan replacement

This Public Service Announcement is brought to you by Brother PDuff:

I'm reminded of one time, a fellow tech and myself were at the shop.  He was working on a large countertop microwave and I was down the hall in the front office.  We could see each other and were carrying on a conversation, I forget about what.  I'm absolutely positive he had a few fillings in his mouth because as he was looking and talking to me his hand must have touched the high voltage diode or capacitor, discharging it.  I kid you not sparks flew out of his open mouth!  Being the trained and responsible guy I am I immediately fell to the floor, laughing my ass off.  I eventually recovered and asked him if was ok and he said yes, just scared the hell out of him.  I said, "Man, did you see sparks fly out of your mouth?"  He said no, he must have missed that.  Needless to say we both found new respect for microwaves and the awesome, dangerous, and sometimes hilarious power of the high voltage capacitor.

To learn more about your microwave oven or to buy parts, click here.


Source: Im DUMB and need help on Kitchenaid Microwave khms2040wss-0

Caressing your cranium like cool cherry blossoms, it's the green shoots of another Appliantology issue easing down into your eyeballs like the misty morning dew in springtime. Come in and have some Tranya...

From the GE Tech bulletin on this:

New variable speed inverter motors no longer
require the in-line fuse. When replacing an
older Hydrowave inverter motor with the new
inverter motor, the in-line fuse must be
removed from the washer harness. Failure to
remove this fuse link will cause the fuse link to
fail due to the higher inrush current of the new
motor design.

Replacement motors will include a jumper wire
and 2 wire splices to remove the in-line fuse.


Read more: http://appliantology...#ixzz2SpWjBMAt

You can download the tech bulletin here:  http://appliantology...r-fuse-removed/

Buy parts for your GE washer here: http://www.repaircli...g-Machine-Parts