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haddy  
#1 Posted : Thursday, August 14, 2008 7:44:34 PM(UTC)
haddy

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My Whirlpool dryer won't heat. I've tested the thermal fuse, heating element and thermal cut-off for continuity. All check out. The component that doesn't however is the dryer cycling thermostat. It has four leads and one set doesn't have continuity. I haven't seen anything in these threads about this part affecting heat however. Also, should the actual coils on the heating element have continuity?
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libertyappl  
#2 Posted : Friday, August 15, 2008 10:32:51 AM(UTC)
libertyappl

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The element itself is tested at the contactors.
Check your breaker box first. Throw your breaker all the way off wait a few seconds then turn it back on and try your dryer.
Post the results.
haddy  
#3 Posted : Saturday, August 16, 2008 8:12:04 AM(UTC)
haddy

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I flipped the breaker multiple times and i've checked the voltage coming into the dryer as well. It's a four prong and it reads 240 across all three wires and 120 across two.
libertyappl  
#4 Posted : Saturday, August 16, 2008 8:22:47 AM(UTC)
libertyappl

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OK,
The left to right side should be 240, the left to top and left to bottom should be 120 the same with right side and top and bottom. the top and bottom together should be neutral.
You may also want to check the motor. the black & red leads into the motor check for continuity- take the belt on the shaft to spin the shaft hard enough to make the switch engage. the motor should have continuity during the shaft spinning, if not that's why it's not heating.
Nat
haddy  
#5 Posted : Saturday, August 16, 2008 8:44:39 AM(UTC)
haddy

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Ok, i forgot to mention this earlier and i don't know why. The motor is fine. The dryer runs, it just won't heat. Also, would the part i mentioned in my first post effect the dryer heating?
libertyappl  
#6 Posted : Saturday, August 16, 2008 8:50:45 AM(UTC)
libertyappl

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Ok let me look at the model.
libertyappl  
#7 Posted : Saturday, August 16, 2008 8:59:33 AM(UTC)
libertyappl

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Where exactly is the part you are calling a cycling thermostat? The model number given doesn't have one. Does it have a part number on it?
You may also want to check the red & black wire on the terminal block on the back of the machine, make sure you are getting 240 there. If not it could be in your cord.
Nat
haddy  
#8 Posted : Saturday, August 16, 2008 9:05:08 AM(UTC)
haddy

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I've checked the voltage on the terminal block and it checks out. The part number is 3387134. It says "HEATER 120V" on it.
haddy  
#9 Posted : Saturday, August 16, 2008 9:07:02 AM(UTC)
haddy

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I believe it's part # 21, section 3 on the parts search portion of this website.
libertyappl  
#10 Posted : Saturday, August 16, 2008 9:10:54 AM(UTC)
libertyappl

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Ok, that's your problem it's called a thermostat fix on the breakdown from Whirlpool. Part number AP3131939 from here.
That should get you going.
Nat
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