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jhabetler  
#1 Posted : Sunday, March 2, 2008 1:17:47 PM(UTC)
jhabetler

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Dryer is 1.5 yrs old and started acting up a couple weeks ago; but not all the time - it works fine for a couple loads, then won't stay running in any mode (timed drying or automatic drying).
Dryer will run for about 30 seconds, then stop - no error on the display.
Cleaning the moisture sensors sometimes fixes it...Letting it sit for a few minutes sometimes fixes it.
Should I consider replacing the moisture sensor.
Can anyone supply a wiring diagram for my dryer.

Thanx,
Justin
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Gene  
#2 Posted : Monday, March 3, 2008 12:14:11 PM(UTC)
Gene

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Hi Justin,

The first failure suspect is a clogged exhaust line which caused the dryer to overheat.

Gene.
jhabetler  
#3 Posted : Monday, March 3, 2008 2:38:15 PM(UTC)
jhabetler

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Thanks for the response Gene.
I actually already checked the exhaust line and it's perfectly clean.
Could it be a defective thermal switch?
Or should check something else?

Thanx,
Justin
Gene  
#4 Posted : Monday, March 3, 2008 3:05:34 PM(UTC)
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Possible the moister sensor is causing the problem.

The model number you posted does not come up. Verify and repost it, please.

Gene.
jhabetler  
#5 Posted : Tuesday, March 4, 2008 4:59:34 AM(UTC)
jhabetler

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Model number is confirmed to be WTMC4300CN, Bosch Nexxt DLX Series Electric Dryer.
It's a Canadian model - the US equivalent is WTMC4300US.

Can I simply jumper the moisture sensor to bypass it?
Does it provide a variable resistance or some other measurement to the circuit board?

Thanx,
Justin
Gene  
#6 Posted : Tuesday, March 4, 2008 11:23:45 AM(UTC)
Gene

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Justin,

You can not bypass the moister sensor - the control board is going to be confused. It controls the sensor by reading the proper resistance.

I would recommend to call an authorized Bosch tech because the problem you described is not a regular and it is not on the troubleshooting list.

Gene.
jhabetler  
#7 Posted : Tuesday, April 1, 2008 4:41:57 PM(UTC)
jhabetler

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As it turns out the problem was with the door switch - the one screw holding the door sensor in place was slightly loose, just enough to shut down the dryer after a couple minutes of tumbling and clothes bumping against the door.
Go figure....
Gene  
#8 Posted : Tuesday, April 1, 2008 6:44:27 PM(UTC)
Gene

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I'm glad you were able to fix it.

Gene.
Guest LANCE  
#9 Posted : Saturday, July 3, 2021 8:27:44 PM(UTC)
Guest

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MODEL NO WTL6500AU/07 BOSH MAXX DRYER
IT JUST SEEMS TO PULSE EVERTY FIVE SECONDS NO MATTER WHAT I DO ONCE TURNED ON HELP PLEASE .HAVE CLEANED ALL AREAS OF MACHINE
REGARDS LANCE
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