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josey23

GE Profile Gas Dryer - DPSR475GW0WW - heats, dries but timer doesn't advance in 'auto'

8 posts in this topic

I have a 10+ year old GE Profile gas dryer that has been great until recently:

The timer does not advance in "auto" mode. The clothes dry just fine but the dryer will run for hours if I forget about it.

 

In "timer" mode the dryer works fine, although I either waste time (oops, not dry, another 20 minutes I guess) or energy (screw it, 80 minutes!) or both. I would like to get it working properly in auto mode again.

 

notes:

- The venting is good with only 6 feet of hard metal pipe (no plastic, no flexi-pipe). I took apart the dryer and everything is pretty lint-free.

- I don't use dryer sheets or fabric softener. The sensor bars are clean and show <0.2 ohm resistance.

- This problem has come up with the onset of really cold weather and the dryer area of the basement is probably around 55 degrees.

- I scanned the wiring diagram but don't know how to post it here

 

Guidance would be appreciated - I have a circuit tester and would like to confirm a problem before I start throwing new parts at this problem.

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  Does the burner cycle off/on during the cycle? If it doesn't, the timer will not advance in auto-dry. In auto-dry the timer only advances when burner is off or when it is near the end of cycle. May be that it's just too cold at dryer location.

 

Eric

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  Does the burner cycle off/on during the cycle? If it doesn't, the timer will not advance in auto-dry. In auto-dry the timer only advances when burner is off or when it is near the end of cycle. May be that it's just too cold at dryer location.

 

Eric

 

I just did a full load of jeans and towels on the cotton setting, auto mode:

burner ON 19 minutes, off 1.5 minutes

burner ON 6 minutes, off 1.5 minutes

burner ON 4.5 minutes, off 1.5 minutes

burner ON 2.7 minutes, off 2.5 minutes

burner ON 3.5 minutes, off 3 minutes

burner ON 2 minutes, off 3 minutes

burner ON 2.3 minutes

 

That's a total of 53 minutes and typically how long a heavy load would take to get mostly dry. I opened door to check the load. The clothes were pretty dry but not all the way. Timer had not moved at all.

 

I restarted dryer and took a break from monitoring and promptly forgot all about it for 25 minutes. When I got back to it I observed: burner on for 2.7 minutes, burner off for 3.5 minutes and burner back on. At this point I opened to door to a load of fluffy, warm clothes. The timer had not moved at all. Still thinking on this….

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  Need to monitor voltage between timer terminals TC and TF with dryer running in auto-cycle. Should be 0 with burner on and 120vac shortly after burner cycles off when flame sensor closes. If you do get 120vac there but timer won't advance during the time it's there, then timer is bad. If you don't get 120vac there at all then there is some other problem.

 

Eric

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  Need to monitor voltage between timer terminals TC and TF with dryer running in auto-cycle. Should be 0 with burner on and 120vac shortly after burner cycles off when flame sensor closes. If you do get 120vac there but timer won't advance during the time it's there, then timer is bad. If you don't get 120vac there at all then there is some other problem.

 

I will try. The back of my timer has terminals labeled A, B, C, D, H, S, T and X.  The timer motor is attached to terminals D and T; is that what you mean?

I'd love to upload/post the wiring diagram but cannot figure out how to do it on this site. (help, anyone?)

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  Sorry, parts lists showed mini-manual for your model as 31-15227, not 31-16006. Either your moisture rods are shorted out or the circuit board is bad. Unplug moisture rod connector and see if timer advances in auto-dry. If not, then board is bad. If it does advance, clean moisture rods.

 

Part number: AP3425413

Part number: AP3425413

 

Eric

Edited by Samurai Appliance Repair Man
Affiliated part link using the APP button.

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OK, I unplugged the moisture sensing rods and the timer did not advance. I will order the new circuit board.

I'll give an update when I get around to replacing it.

 

  Sorry, parts lists showed mini-manual for your model as 31-15227, not 31-16006. Either your moisture rods are shorted out or the circuit board is bad. Unplug moisture rod connector and see if timer advances in auto-dry. If not, then board is bad. If it does advance, clean moisture rods.

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