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-   -   Dryer trips breaker (http://forum.appliancepartspros.com/dryer-repair/24420-dryer-trips-breaker.html)

dayeaw 02-23-2009 05:00 PM

Dryer trips breaker
 
Dryer has been running fine. Yesterday, it tripped the breaker. I reset breaker and started dryer again. It tripped again. Obviously there is an issue here. I have tested everything and checked the wiring for shorts. I can find nothing that doesn't check out. Only the Thermostat, internal-bias switch located on the vent tube did I not get a continuity reading from the 2 inside (smaller purple wires).

dayeaw 02-23-2009 05:00 PM

More
 
This was at least the second load yesterday when breaker tripped.

denman 02-23-2009 05:36 PM

Cannot find info on this unit.

By the sound of it you have a thermostat that has an internal heater. This is used to give lower lower dry temps when turned on it switches the thermostat off more often. Usually it is about 6000 ohms.

If drum starts to turn, then shortly after the breaker blows could be your heating element is sagging. As it heats up it sags more touches the case and blows the breaker. It cools then returns to where it is no longer shorting out.

You could try disconnecting both wires to the heating element and measuring them to the case. Should be infinite resistance (open). But as I said it may not short to the case when cool.

Run it with no heat (Air or Fluff) cycle. If it runs OK this will eliminate the motor as a cause.

dayeaw 02-23-2009 05:43 PM

Thank you.
 
I will try that. Any idea on this part though? The part # is 3387134. There are 2 outer wires, the 2 inner wires. I have continuity between the outers, but the center prongs seem to be open. Are hey supposed to be?

denman 02-23-2009 07:23 PM

There are 2 outer wires, the 2 inner wires. I have continuity between the outers, but the center prongs seem to be open.
This is the thermostat I mentioned, it has a heater built into it.
The 2 outer connections are the contacts. Should be closed at room temperature (0 ohms)
The 2 inner connections are the heater. Should be around 6,000 ohms.
Try a higher resistance scale on your meter.

This could cause your problem but it would have to fail in a very unusual way (short to the case) and I would imagine the high current would blow it open.

dayeaw 02-24-2009 03:59 AM

Thank You
 
Physically, it looks fine. I will test it again tonight and reinstall. Then I will try the Heating element idea. Thank you for your time.

dayeaw 02-24-2009 03:22 PM

OK
 
I have put thermo back in, disconnected the heating element. The dryer runs.:confused: So, I am to assume that the heating element is bad? Did you have any luck finding my dryer by model#? The thermo connection on lint tube (4 prong I have been wondering about) rattles when shaken (i couldn't resist). Is that normal for those thermo parts?

denman 02-24-2009 03:59 PM

So, I am to assume that the heating element is bad?
Since the thermostat looks bad now you have me wondering.
Check each of the thermostats prongs for a short to the case.
All should be an open.

Did you have any luck finding my dryer by model#?
No. Call AppliancePartsPros they should be able to get the parts for you

The thermo connection on lint tube (4 prong I have been wondering about) rattles when shaken (i couldn't resist). Is that normal for those thermo parts?
No. I would replace it. Something has come loose inside.


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