Author Topic: Need service manual for Maytag MEDB400vq  (Read 2839 times)

Offline RegUS_PatOff

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Re: Need service manual for Maytag MEDB400vq
« Reply #10 on: February 25, 2012, 11:24:32 AM »
... diagnostics ... telling me the inlet thermistor was shorted (f25). It's not..
did you test it at the plug where it connects to the Controller ?
The wiring may be "shorted"
After leaving this Earth, "Do you want the smoking or non-smoking section?"

Offline kskarci

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Re: Need service manual for Maytag MEDB400vq
« Reply #11 on: February 25, 2012, 12:32:58 PM »
Yes. Checked both the inlet and exhaust thermistors at the harness. I went so far as to get the heater running in diagnostic mode and then checked them both as they were cooling down to be sure the resistance was changing.. Everything looked as per the normal ranges.

Offline kskarci

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Re: Need service manual for Maytag MEDB400vq
« Reply #12 on: February 26, 2012, 07:34:14 AM »
Correction.. I didn't check the thermal fuse 3 times ;)

Checked the thermal fuse, the high-limit thermostat and the thermal cut-off.. All had continuity.

Copy and paste mishap.

Offline tgoods

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Re: Need service manual for Maytag MEDB400vq
« Reply #13 on: February 26, 2012, 10:06:18 AM »
I'm stumped.  You've been very thorough.  When you measured 245v at the heater relay, that told you two things.  That the relay was not closed, and that the rest of the heater circuit was good.  It would be rare, but maybe you got a bad new control board.

Offline kskarci

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Re: Need service manual for Maytag MEDB400vq
« Reply #14 on: February 26, 2012, 02:27:53 PM »
I'm going to try another board.. While I'm waiting for that; Someone on another forum mentioned that they thought they had seen a service flash for these dryers indicating that if the dryer heated in diagnostic mode but not normal use to replace the user interface board. I can find no reference to this although I don't have access to the resources some of you guys do. Is there somewhere that can be searched for these kind of service bulletins?


Offline tgoods

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Re: Need service manual for Maytag MEDB400vq
« Reply #15 on: February 27, 2012, 12:03:29 AM »
I just checked and didn't find any bulletins but it does seem the only thing left is the user interface.

Offline kskarci

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Re: Need service manual for Maytag MEDB400vq
« Reply #16 on: March 08, 2012, 12:02:44 PM »
Well.. Oddly enough it was the user interface causing the issue.. Replaced it and everything is well again. Hope this thread helps save someone a bunch of wasted time!

Offline ApplianceGuru

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Re: Need service manual for Maytag MEDB400vq
« Reply #17 on: March 16, 2012, 03:21:20 AM »
We used to have access to all of Whirlpool's and Maytag's Service Manuals, Tech Sheets, and Service Bulletins.  That is until a year or two ago.  Now Whirlpool makes us pay $500/year to access this stuff!  I'm thinking of getting together with a bunch of friends and family in the industry, and sharing the expense.

In hind sight, it does make sense the the user interface can cause this, as the interface must tell the control board what cycle and temp you want it to run at.

I'm sure that your headache will prevent one of my own in the future.  Hopefully we can all return the favor with some other problem you solve here.
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