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LuvMyHouse

04:33AM | 01/02/05
Member Since: 08/31/03
3 lifetime posts
Bvelectrical
Hi!

I have a whirlpool gas dryer that had a tumbling drum, but was not heating. Found the problem to be a defective thermal fuse. Dryer is now tumbling and heating.

Now I notice, the control knob does not advance on the "dryer settings" - it only advances in the "timed settings." Is this an unrelated problem? How can I check to see if this is a control knob problem or maybe a thermostat problem?

Thanks!

appliguy

04:59AM | 01/02/05
Member Since: 07/23/04
491 lifetime posts
Hi,

**Found the problem to be a defective thermal fuse.**

-Usually- the thermal fuse doesn't let go on it's own....something else makes it open up....venting system, vent hood should be checked and cleaned, exhaust temp should be checked to make sure the dryer is not getting too hot inside, air ducts inside the dryer should also be checked and cleaned.

**Now I notice, the control knob does not advance on the "dryer settings" - it only advances in the "timed settings."**

Gas dryers must be vented outside, but as a test only....pull out the dryer a bit and remove the exhaust vent pipe and try a test load on auto to see if the dryer will work on the auto cycle.

**How can I check to see if this is a control knob problem or maybe a thermostat problem?**

Since the timer will advance on timed dry this usually indicates the timer is capable of working and the problem is elsewhere.

jeff.

Appliance Repair Aid

http://www.applianceaid.com/

LuvMyHouse

06:01AM | 01/02/05
Member Since: 08/31/03
3 lifetime posts
I had done all of the vent testing prior to discovering the thermal fuse problem. Everything had been cleaned out and there was air coming out with the dryer running with the exhaust disconnected. (All was clear) I also think that since the timer is "partially working" something else is causing the "auto" advance on the control knob to not work. Excessive heat (like you said) caused the thermal fuse to blow in the first place. Is their any way to test thermostats or moisture sensors for continuity?

Thanks so much for your quick response!

appliguy

08:38AM | 01/02/05
Member Since: 07/23/04
491 lifetime posts
**Is their any way to test thermostats or moisture sensors for continuity?**

Use a thermometer on the dryer exit and test exhaust temps and write them down and post your results.

How thermostats work....

http://www.applianceaid.com/thermo.html

http://www.appliance411.com/parts/showcase.dryer-thermo.shtml

jeff.

Appliance Repair Aid

http://www.applianceaid.com/
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