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Centurion13

Member Since 22 Mar 2013
Offline Last Active Mar 28 2013 03:07 AM

Posts I've Made

In Topic: WED5540SQ0 - Whirlpoor Dryer has trouble with thermal fuses...

26 March 2013 - 01:28 PM

I replaced the cycling thermostat completely.  Will test it again tomorrow on fluff.  Checked using a continuity tester for grounds on the heating coil unit, but did not detect any grounds or partial grounds.

 

What if the built-in heater on the cycling thermostat is not being activated by the mode selector switch?  Would a malfunctioning selector timer be a possible source of all this trouble?

 

steve


In Topic: WED5540SQ0 - Whirlpoor Dryer has trouble with thermal fuses...

25 March 2013 - 01:23 PM

Well, I installed the new parts. Checked the final obstacle, the flapper door to the exhaust. There was a lot of lint built up around it, so I cleaned that and re-attached the flapper door to it's hinges. I think the flapper door and outside exhaust might be too small a diameter. It appears to be about 3.5 inches, even though the inside metal has been crimped to fit the 4" hose. There's room behind the dryer for the hose to lay unkinked and with about a 90 degree turn. It is about 3' long, total. I put it on cool and tested the airflow. The flapper opened all the way (no lint to jam it) and the airflow seems fine, but I am gonna run it on 'cool' for now. Just to see if we can keep it going for a few days. I want to get a cheap airflow tester - http://www.sears.com...=3&blockType=G3 Does anyone have experience with this? It's a lot less expensive, but I know that you get what you pay for. Also... I put it on 'Fluff' cycle but still felt heat when I went outside to check airflow. Thoughts on this? Steve


In Topic: WED5540SQ0 - Whirlpoor Dryer has trouble with thermal fuses...

25 March 2013 - 11:22 AM

Simple and inexpensive gadget for testing dryer vent airflow:

 

 

Wonderful video, though I suspect that is more an investment for an applicane repairman than a casual tool for the average homeowner.  Love the lights!


In Topic: WED5540SQ0 - Whirlpoor Dryer has trouble with thermal fuses...

24 March 2013 - 08:13 PM

No, no!  I did note the temperature test, just hadn't the time to remove the unit and test it that far.  I was just giving information to let you all know what I'd gotten so far.   It is a $25 dollar part and I plan to replace it tomorrow in the AM.  

 

I also disassembled the remaining places where the air flowed (the lint filter, etc) and there was nothing stuck/stuffed back in there.  The fan looked fine and dandy, turned without a lot of resistance (it was turning the drum at the same time) and had no visible damage.

 

Again, am wondering if those stupid pills I took (and the resulting BOOM!) are to blame for this additional misadventure.  Routing the current straight through it all  without the courtesy of passing it through the heater coils?  Mmm.

 

Thank you all for your help, and please, have some peas!  Gomenasai!


In Topic: WED5540SQ0 - Whirlpoor Dryer has trouble with thermal fuses...

24 March 2013 - 02:20 PM

@RegUS_PatOff:  Not sure if the unit is grounded or not, will check with the VOM.

 

Very little resistance.  No grounding.  I would have to check with the digital, though.  But the coils look fine.  A little dark, but not damaged or crossing in any way.



The thermal cutoff is a different part from the high-limit thermostat.  Maybe you replaced both.  What's the part numbers of the part or parts that you replaced?

 

I replaced both - there's the heater coil cutoff, which is black and round on a metal plate.  The high limit thermostat is also round on a metal plate, but larger.  Kit #279816.

 

The open circuit is on another part, the thermal cutoff that is white and held in place with a single screw.

 

 

@DurhamAppliance: I just did a continuity check on the cycling thermostat.  It reads continuity between the two large, outside terminals.  Ambient temperature is about 65-70 degrees.



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