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Estate Electric Dryer - No Heat

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My Estate electric dryer stop making heat this morning. I've reviewed your forums and checked what I could be I

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  #1 (permalink)  
Old 05-26-2012, 02:47 PM
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Default Estate Electric Dryer - No Heat
Model Number: TEDL660WNO   Brand: Estate   Age: More than 10 years   

Appliance Parts from AppliancePartPros.com


My Estate electric dryer stop making heat this morning. I've reviewed your forums and checked what I could be I have a couple questions.

Thermal Fuse reads 0.4 ohms with meter set at 200 ohms.

Heating Coil reads 10.2 ohms and no resistance when grounding each terminal to case.

Internal Bias thermostat (cycling thermostat) reads 0.2 ohms on outside terminal (heavier red wires) and 7230 ohms (7.23 at 20k ohms) on inner terminals (purple and white wires).

Thermal Cut-Off produces no reading (open?).

High Limit Thermostat fell apart when removing connectors. Connector on one side is scorched and insulation missing on first inch of wire. Next inch of insulation is scorched.

Obviously the High Limit Thermostat needs to be replaced. I'm uncertain about the Thermal Cut-Off but assume it should be replaced too.

I think I can reroute the scorched wire and remove the damaged portion.

Can you suggest other reasons the wire is scorched? Anything else I should check?


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  #2 (permalink)  
Old 05-27-2012, 12:36 AM
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Here are your parts. looks like a lot of the unit is missing. AppliancePartsPros probably sells the parts but for some reason the parts breakdown is incomplete.
Replacement parts for TEDL660WNO models | AppliancePartsPros.com

Yes both the thermal-cut off and hi-limit should be replaced.
The wire that is bad will have to be cut back till you get to nice clean copper.
Then a new high current connector will have to be crimped to it.

Could be that there was a bad connection at the high-limit from day one. This is then a resistance and it heats up when current passes through it. This then further degrades the connection causing more heat and so on and so on till the connection fails.

I would check a couple other things just in case.
Check the heating coil.
Unplug the unit and both wires to the coil.
Check it with a meter, should be around 10 to 12 ohms.
Then check from each side of the coil to the case/frame, both should be infinite ohms (open). If not the coil may have sagged or broken and is touching the case. This can cause it to run on high and the thermostats cannot regulate it so the thermal cut-off blows.

Note: That unless there is another problem in the unit the hi-limit should never have to open. It is just a safety device with the fuse being a backup safety device.

Just in case it is not a grounded element.
With all the below the high limit will also have to be replaced.
Check that the belt is OK.
Check the seals (drum etc) in the unit. The air is pulled over the heating coils, through the drum and pushed out the exhaust. So any large seal leak will pull in room air and the cycling thermostat on the blower will run the unit hot.
Check that the lint filter is not coated with fabric softener residue which greatly reduces air flow.
Check/clean your vent system.
Check/clean the blower wheel.

If all OK you may want to replace the cycling thermostat as it's contacts may not be opening (welded shut)
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