Dryer Heats Timer Doesn't Move

Dryer Repair
,
1

I have a Maytag Dryer Model # MDG8400AWW with a brand new plastic timer. The dryer heats but the timer doesn’t move in any mode. I had replaced the timer due to the same problem and only dried two loads of wash before timer didn’t move again.

3

Are you willing to proceed with the diagnosis yourself? You have to have a simple multimeter to do some tests. Let us know and we’ll guide you through.

Gene.

4

Gene:

I am so happy you responded. I am assuming the internet post from the other owner doesn’t lead you to believe it might be a defective (wrong) timer problem.

I just repaired a Carrier Furnace that had a defective circut board, so I believe I have the determination and skill level when directed to solve this problem.

Yes I have a multi-meter and am a half-way decent handyman. The unit is at my 88 year old mom’s house that is five miles from me, but if you can give me some starting point tests on the dryer I would be able to check them out and move forward from there.

I have read a lot of the other "timer doesn’t work" posts and have never seen where the poster finally stated they solved the problem. Hopefully I will be the first.

I was curious if one could make a timer testor by taking an extension cord and cutting off the female end and crimping on two insulated connectors to slide onto the clock timer contacts then plug the cord into an oulet to see if the clock runs?

Thanks so much.

John

5

Hi John,

Just to begin with: post the serial number of the dryer and the part number of the timer currently installed. Maytag had redesigned the timer a few times and used different part numbers for dryers with different serial numbers.

Gene.

6

Gene:

I edited the post to include the serial # of the dryer.

John

7

Gene:

Thanks for the tips. I will do the test tomoorrow. I hope your analysis is correct. I was going to tell you earlier that the dryness display was always showing damp clothes when there were no clothes in the dryer and it was heating on time dry with no movement of the timer.

Thanks again for all your help,

John

8

Hi Gene,

I too am having the EXACT same problem that John is seeing. About a month ago, my Maytag MDG8400AWW dryer (serial number 228964411CR) timer stopped moving.

I did a little research and ordered a replacement Timer (33002855) from APP. That did not fix the problem.

I then ordered a replacement the Sensor Assembly (33002734). I examined it before I replaced it and visually it was IDENTICAL to the one that is currently in there, including the PCB assembly number on the circuit board.
When I put the new board in, it worked for about 10 minutes and then all of a sudden I heard a pop and the sensor light was out and there was a burnt smell. I turned it off and unplugged the dryer to find that the Q2 component on the board had fried, all the way to where the Blue (34) and Brown (15) are on the connector.

I am currently stumped. I am not sure if I just got a defective Sensor Assembly.

Just wondering if you could give me any advice?

Thanks!

-Rob

9

Rob:

I dd the same exact fix as you did with the exact same result. After that hapened I felt soooo frustrated and technically incapable of trouble shooting this appliance that I went to my appliance parts store near by and hung out to talk to an appliance repairman coming in for parts.

A really nice repairman said that that dryer has always been difficult to diagnois and he said to foget trying to fix it and get something different than that model. I took his advice and have been so happy.

I am hoping that you will finally figure out what causes the circut board to short out and how much it actually costs you to resolve the problem.

John

10

So far, I have spent about $70 on a timer and $25 on the intellisensor board. I might try to get a new board and put it in with the new timer…

Still cheaper than a service call…

-Rob

11

Rob:

Just to make sure you understand that my fix was exactly what you are proposing. The new circuit board blew up with a neew timer. Do you have your old circuit board? When I looked at my old board it was also blown up. So on my dryer I went through two timers (thinking the first timer was the problem) and one circuit board.

Something other than the timer is causing the circuit board to blow up.

John