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FIXED Maytag MDE6700AYW - keeps tripping thermostat WP35001087

Fred9x

Premium Member
Joined
Mar 6, 2011
Messages
14
Location
hartford CT
Model Number
MDE6700AYW
Brand
Maytag
Age
More than 10 years
Since December, 2014 I have replaced thermostat/thermal fuse part # WP35001087 NINE times. Along the way i have also replaced thermister WP35001191 twice and the "assy Duct heater" part # 35001109 (also known as part # DC97-14486A). This kit includes thermostat 35001092, heater 35001247 & assy-bracket (thermostat) 35001193.

The vent is clear with full blast of hot air and lint coming out the side of the house. But it does have a long (15 feet) run to the outside.

Any idea what is causing this part to fail?

Thanks
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,162
Location
McMullen Valley, Arizona
But it does have a long (15 feet) run to the outside.
That's the reason Fred.

You will need a indoor vent kit, all hardware stores sell them.

Jake
 

Fred9x

Premium Member
Joined
Mar 6, 2011
Messages
14
Location
hartford CT
Jake,
Thank you for your prompt reply!!

We have been here since November 1992 with the same setup and with the same dryer since 2006. Do you think the long vent run has become blocked or narrowed over time?

Thank you,
Fred
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,162
Location
McMullen Valley, Arizona
Do you think the long vent run has become blocked or narrowed over time?
Yes Fred.

They now have duct cleaning services that will clean every inch of it out.

Jake
 

Fred9x

Premium Member
Joined
Mar 6, 2011
Messages
14
Location
hartford CT
Jake, as usual, you were right!!! I did take apart the duct work in the basement and here are the before and after photos. The most lint was near the end, that is, farthest away from the dryer. I had some metal tape on hand so no cost. Yes, this 75 year old is bragging.

Thanks again for your guidance.
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,162
Location
McMullen Valley, Arizona
Excellent Fred, I see the photos of your duct very clear, you nailed it.:)

Thanks For the update!

Jake
 

fred9

Premium Member
Joined
Jun 24, 2005
Messages
31
Location
, ,
So after about 6 months the thermostat tripped again on November 15 and I replaced it. And it tripped again yesterday. The pictures above of the clogged vent taken last June show over 14 years of build up so I don't think it could clog up that much in 6 months. Today I did take off the flexible vent piping. It was only dusty. No lint. I also looked in the vent in the dryer. It's about 18-24 inches long and it was very clean. So put in the 11th thermostat. I had a extra 35001153 Main Electronic Control Board so I put it in also. Machine is working now but what could be causing the the thermostat to trip?

Thanks
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,162
Location
McMullen Valley, Arizona
Hi Fred,

Now I remember a few years ago, I had a customer that this was happening to as well, the only solution was an "indoor vent kit" that you can purchase at any hardware store, Lowe's, Home Depot, Ace Hardware, True Value Hardware.

Jake
 

fred9

Premium Member
Joined
Jun 24, 2005
Messages
31
Location
, ,
Hello Jake,
Thank you for your reply.
I want to make sure I understand your thinking(diagnosis from afar) Are you saying that there is (probably) no mechanical/internal fault that is causing the dryer to overheat and therefore tripping the thermostat? You think that the venting run to the outside is just too long even when cleared of lint.
Thanks again.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
109,162
Location
McMullen Valley, Arizona
Yes Fred, that's exactly what I meant.:)

I went to that customers house 4 times and I was very puzzled, then I mentioned the indoor vent kit and she never called back again.:)

Jake
 
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