Bosch dryer won't stay running - sometimes

Dryer Repair
1

[FONT=Arial]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).[/FONT]
[FONT=Arial]Dryer will run for about 30 seconds, then stop - no error on the display.[/FONT]
[FONT=Arial]Cleaning the moisture sensors sometimes fixes it…Letting it sit for a few minutes sometimes fixes it.[/FONT]
[FONT=Arial]Should I consider replacing the moisture sensor.[/FONT]
[FONT=Arial]Can anyone supply a wiring diagram for my dryer.[/FONT]
[FONT=Arial][/FONT]
[FONT=Arial]Thanx,[/FONT]
[FONT=Arial]Justin[/FONT]

2

Hi Justin,

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

Gene.

3

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

4

Possible the moister sensor is causing the problem.

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

Gene.

5

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

6

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.

7

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…

8

I’m glad you were able to fix it.

Gene.

9

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