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MAYTAG MEDB850WQ0 DRYER CO Error Code


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2 replies to this topic

#1 Magenta#90

Magenta#90

    Yamabushi

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Posted Yesterday, 09:21 PM

Customer complains that when came back home the dryer was on, also  the other appliances show Power Failure due to power  loss in the street. Tried to activated the diagnostic test modes  but most the time shows "CO" error, tried Manual  load test, nothing, I'm lost I talk to several technicians, some say the control board, the harness or the User interface. Us we know there  is no CO error in the tech sheet, I'am able to activate the diagnostic test mode until the "8:88" after the "8:88" the console goes Blank, but doesn't come back with the "8:88: displayed, sometimes I get the "LID.  Please Help..........



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#2 Samurai Appliance Repair Man

Samurai Appliance Repair Man

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Posted Today, 11:10 AM

One rule of thumb is that undocumented error codes automatically implicate a bad control board. As a confirmation, you can try to rule out the UI/touchpanel by doing the Button and Indicator test on page 7 of the tech sheet (Test 6).  

 

Looking at the schematic, another test you can do is measure for DC voltage between P2-1 and P2-3. The tech sheet doesn't give a spec on the voltage but it's usually either 5 or 12 vdc.  If you have something in that range present, then the main control is good and the UI board is bad. 



#3 Applianceman97

Applianceman97

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Posted Today, 01:27 PM

I have a few places that this problem has to do with the software in the control. Do as the Samurai has instructed but I think your problem will be in the main control. If you replace the main control, make sure the power is shut off to the unit. These Brovos, cabrio machines don't like a board a change with the power on. (I know first hand dryer wont work right until power is cycled)


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