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Find the problem - win a mug.

Posted: Tue Mar 23, 2010 3:53 pm
by Mark
Hi,

I will send a mobilehomerepair.com coffee mug to the first person who posts the correct answer.

We sent a customer a new heating element for his electric furnace. He removed the element from the factory box and installed it. In a couple days he called saying that the element must be defective because it kept tripping the limit switch. So we sent him a new element and we received the first one back. There was definitely a problem. I've posted two pictures of the element. The first person to tell me what's wrong will win a mug. Obviously, you don't need any meters to figure this one out!

Mark

Re: Find the problem - win a mug.

Posted: Wed Mar 24, 2010 1:05 pm
by Brenda OH
the yellow cord over the plug would have to be moved out of the way to successfully plug in the unit... Brenda

Re: Find the problem - win a mug.

Posted: Wed Mar 24, 2010 1:56 pm
by Mark
Good try, but the wires would instead be plugged into the other side of the limit switch.

Re: Find the problem - win a mug.

Posted: Wed Mar 24, 2010 4:31 pm
by Greg
Hard to tell from the angle of the pictures, but it looks to me like the top & bottom coils either cross or touch each other at the front by the 2nd bend. Greg

Re: Find the problem - win a mug.

Posted: Wed Mar 24, 2010 4:34 pm
by Mark
The pictures may be deceiving, but the wires do not touch. If they did, it would blow a breaker and not a limit switch. Keep trying!

Mark

Re: Find the problem - win a mug.

Posted: Wed Mar 24, 2010 7:34 pm
by joedirt63
heating coils too close to the switch and overheat the switch.

Re: Find the problem - win a mug.

Posted: Thu Mar 25, 2010 12:35 pm
by Brenda (OH)
Greg,

you could just ask Mark to send you a mobilehomerepair.com coffee mug I think you probably have sufficient leverage..... grins

Brenda (OH)

Re: Find the problem - win a mug.

Posted: Thu Mar 25, 2010 9:28 pm
by Denise
ahh, what the hay.....the upper element looks longer (different) then the lower one, like they should go to different set-ups.

Re: Find the problem - win a mug.

Posted: Thu Mar 25, 2010 11:24 pm
by Mark
Joedirt63, you have just won the mug. E-mail me your shipping address to [email protected] and I'll get a mug on the way to you.

Heating coils that are practically touching the limit switch will trigger problems. Coils should be kept an inch or more back.

Good job!

Mark

Re: Find the problem - win a mug.

Posted: Fri Mar 26, 2010 10:11 am
by Brenda (OH)
Nowfor my learning, I would like to know....

could the offending coil have been gently lifted off the posts, and repositioned, or are they permamently attached and have to be returned to the vendor lol

Brenda (OH)

Re: Find the problem - win a mug.

Posted: Fri Mar 26, 2010 10:27 am
by Mark
Yep, the coils could have easily been adjusted by lifting off the insulators and repositioning. If we would have known more about the issue, we would have talked them thru the fix over the phone so they wouldn't have needed to return the coil.

Mark

Re: Find the problem - win a mug.

Posted: Sat Mar 27, 2010 3:50 pm
by Robert
Just be sure you do not touch the coils with bare hands/fingers. Also be sure they are evenly stretched and positioned.


Thanks,
Robert