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Forum Index => Dryer Repair => Topic started by: Nathan Allen on July 21, 2013, 02:18:50 PM

Title: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 21, 2013, 02:18:50 PM
I cleaned out a lot of lint build up from dryer. I learned about the safety cut off that are non-resetable and thermal fuse. I replaced the heating element, but not the problem.  I don't know how to trouble shoot the problem. I am buying a meter tomorrow, so I can do this right. I need to know what readings, I should get on each part. So, I know what part is bad. Please advise any help would be greatly appreciated.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: tgoods on July 21, 2013, 03:44:13 PM
We're in the wrong category but AJ will move us.  Check the thermal cutoff on the side of the heater can. Around 0 ohms is good, infinite is bad. You'll probably find it bad, it's more common than an element for no heat problems. If it checks good, post your model number so I can pull a schematic.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 21, 2013, 05:49:55 PM
On my way home from work tomorrow, I am going to pick up a meter. I will test thermal cut off and get back to you. I appreciate your quick reply....Nathan
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 11:46:19 AM
Well, I ended up borrowing my neighbors mulitimeter for the day. I have no reading on the thermal cut-off switch. So, I guess that means that part is good. My model number 110.66722694. Please advise.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 04:08:03 PM
I tested the thermal fuse and I have continuity on it.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 05:55:02 PM
I have no continuity on the thermal cutout and 0 ohms is that normal. I thought I would have continuity.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: tgoods on July 23, 2013, 07:20:48 PM
0 ohms means you have continuity and it indicates that the thermal cutoff is good. Infinite is bad. Are you using an analog or digital meter? If the needle doesn't move, that's infinite and no continuity. If everything checks out in back, check the timer.  Look for the two thickest wires, usually red and black. Check for continuity between the terminals with the timer in running position.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 07:44:07 PM
I am using a digital meter. I tested the timer for continuity at the terminals once I disconnected the red and black wires and got continuity. I also, checked today if the breaker was partially tripped, but it was fine.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 08:14:44 PM
Just to be clear. For the thermal cutoff. I said 0 ohms because the digital meter stayed at 0. I put it then on the setting that will beep if I have continuity. It has beeped on everything that I tested, but the thermal cutoff. So, does that mean that part is bad? Sorry, for the confusion.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: tgoods on July 23, 2013, 08:58:02 PM
I'm confused.  If it's showing 0 ohms, it should have continuity.  You could test for a voltage drop.  Run the dryer and check for voltage at the tco terminals.  If you get 240 vac, it's bad.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: AJ on July 23, 2013, 09:14:15 PM
Just to be clear. For the thermal cutoff. I said 0 ohms because the digital meter stayed at 0. I put it then on the setting that will beep if I have continuity. It has beeped on everything that I tested, but the thermal cutoff. So, does that mean that part is bad? Sorry, for the confusion.

I wonder if your confusing what your calling "0 ohms" with what is actually no reading on the meter.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 09:18:08 PM
Right...No reading on meter AJ. That is the confusion.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: AJ on July 23, 2013, 09:32:03 PM
No reading on the meter is just the opposite of having 0 ohms.

0 ohms is what you have when you touch the meters two test leads together.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 10:00:31 PM
ok, so I have no reading at all.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 10:03:45 PM
No reading on thermal cutoff. So, that means the thermal cut off needs to be replaced?
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: AJ on July 23, 2013, 10:06:49 PM
Yes, I would replace the thermal cut off.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: JWWebster on July 23, 2013, 10:15:26 PM
Roper dryer runs but no heat video:
http://www.youtube.com/watch?v=PnO0W1mBQKM (http://www.youtube.com/watch?v=PnO0W1mBQKM)
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 23, 2013, 10:22:37 PM
Thank you AJ and tgoods. I will replace the thermal cutoff. I apologies for my wrong wording leading to confusion.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: tgoods on July 24, 2013, 12:29:35 AM
Replace your thermal cutoff, 279816. It comes with a limit thermostat that should be replaced along with it.
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 24, 2013, 05:16:21 AM
Great...Thanks Again!
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: tgoods on July 25, 2013, 08:47:32 PM
Logged into my Paypal account today and found an extra $5 in there. Thank you very much!  :cheers:
Title: Re: My Kenmoore 70 series will run, but not heat up. I need help on diagnostic.
Post by: Nathan Allen on July 26, 2013, 05:48:27 PM
Thank you for your help. I would be jammed up with out y'all.