Kenmore 110.86870100 timer & drying problem

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Old 08-21-09, 08:26 AM
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Kenmore 110.86870100 timer & drying problem

My Kenmore 110.86870100 electric dryer is having some problems...

1. Timer won't advance when in 'auto' mode, timed dry advances okay.

2. Drying time is taking at least double what it used to. Seems it doesn't get as hot - towels take forever...

I checked the timer resistor at around 5K ohms.
Checked the thermal fuses and are not 'open'.
Checked the temp knob and resistance changes for each setting.

Do you think I have a defective timer, or can one of the thermostats be causing this? (not sure how to check out the thermostat..).

edit: vent is clear both inside the box and to the outside... exhaust temps are nowhere near where they should be...

Help!
 
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Old 08-21-09, 03:08 PM
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The dryer has to get hot enough to shut off the operating stat so that then the timed cycle then advances. Check to see what the temp is at outlet of dryer and if there is any cyclic oscillations in temp swings say between 130-160F (give or take some) if say a door gasket is bad/missing or the felt is no longer sealing around the rear of the drum, cold air can enter the dryer, and the dryer will never get hot enough to cycle the stat. Check all this out and then get back.
 
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Old 08-21-09, 03:28 PM
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Thanks, I'll check it out tonight...

ken
 
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Old 08-21-09, 03:34 PM
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Sounds like you have a vent problem, Clean vent to outside, Air volumn coming out back of dryer should be the same as outside.
 
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Old 08-21-09, 08:05 PM
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make sure you dont have a short to ground on the heater element. check with ohm meter from element terminals to ground(heater box case). should be infinity
 
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Old 08-24-09, 10:08 AM
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Turns out the problem was the 240V source - I lost one leg of the 240v so the dryer was only running on 120V.

Problem solved!
 
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Old 08-24-09, 04:43 PM
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Huh. Without a broken element wire going to ground, I can't see how that dryer even got warm (see first post).
 
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