Kenmore Elite HE5 dryer control panel won't turn on 110.87088601

[ClayC]

Kenmore Elite HE5 electric dryer

Model 110.87088601

Started a load yesterday and it finished running. I'm not sure if it shut off normally or a little early but the clothes were dry. 

When to put another load in, and the control panel wouldn't power up at all, no lights, no beeps, nothing. Nothing I push makes it turn on. When I open the door, the light comes on, and it will shut off when I push the door switch OR close the door. 

I checked power and I have the proper voltage across all legs at the back of the dryer. 

I unhooked the power for about 10 minutes and plugged it back in and still no control panel. 

I'm assuming I've got a bad panel, but would like a little confirmation. 

thanks!

Clay

[ClayC]

Ok, I've checked the power supply board located under the top of the dryer and all of that appears to be good. No burnt spots found, and the output voltage to the control board appear to be good at 5 volts. 

My main question is how do I figure out which is bad: the user interface board or the control board??

thanks!

Clay

[ClayC]

Using the service manual in the dryer I ran through the tests shown, and got to test 8 I believe which said to "replace the console electronics and housing assembly", so I bought the new control board and user interface board from appliancepartspros.com (http://www.appliancepartspros.com/whirlpool-cntrl-elec-w10339952-ap4568161.html)

well I installed the parts yesterday and that didn't fix it.  I still have nothing except for a drum light. 

today I took some time to do some more digging. Ran through the tests again with the same results, so I decided to look around at some other items. 

The only thing I've found so far was the thermal fuse appears to be blown. There is no continuity across the fuse as I would have expected. So I jumpered around it with a piece of wire. I was hoping that would at least do something but nope, nothing. 

So, any thoughts or other things I should look for? 

thanks!
Clay

[16345Ed]

Have you tested the thermal fuse?

[ClayC]

Yes. In my previous post I said that I tested the thermal fuse and it appears to be blown. I jumpered around the fuse but still have the same result, ie nothing going on with the control panel. 

[16345Ed]

Oops sorry. 

 

You say you did all the tests. 

Do you mind running down through what you tested?

 

 

[ClayC]

sure thing. 

I followed the tech sheet for this dryer. 

First I tried to put it into diagnostic mode, which it wouldn't do. So then I did test 1 (supply connections), which it passed. 

Next was test 2 (Machine control power check), which it passes. 

Then was test 6 (power cube). There is continuity between P2-1 and P003-3 all day long. 

This sends me to Test 7. Test 7 says to 'visually check the p5 connector is inserted all the way', well I don't have a connector plugged into that spot, but all of the others are good. At the end of test 7 it says to replace the console electronics and housing assembly, which I did and that didn't fix it. 

I went back over all the tests with the same result today. 

Now, I did find something interesting with the power cube just now.  With the wires unplugged, at the power cube I get 5 VDC at the blue connector, and I get 5 VDC at end control panel side of the wire with them plugged in. BUT once I plug the wire into the control panel the voltage drops to 1 VDC!!!! 

I tried this same test with the new control panel, with the same result. I get 1 VDC when connected, but once I unplug it the voltage goes up to 3, then 4, then 5 VDC over about a 10 second period. I'm wondering if there is something wrong with the power cube???

Lastly, I also checked the thermal fuse which appears to be bad. This must have all happened at the same time because the dryer was working up until it all just quit.

 

[sh2sh2]

Yes the power cube is bad, it should have 5 volts with the interface plugged in

[ClayC]

OK, I screwed up! I thought I had the thermal fuse out, but it turns out it was the thermistor. The thermistor appears to be bad, but I found the thermal fuse further inside the unit and it tests out fine. 

that said, I also checked the heating element and it appears to be fine. Not grounded to the case, and resistance measures 17 ohms. 

Sorry I screwed up the thermistor!!!!!!

thanks for all of the help so far! 

[sh2sh2]

Thermistor has higher resistance, like 15000 ohms, replace the power cube and you will be good to go

[ClayC]

thank you sir! I'll order it straight away! 

[Emer@ld]

Hi There, I’m having exact same issue on my Kenmore HE5 dryer and have come down to the similar finding on the Power cube as you had. Before ordering the part, just wanted to check with you if it fixed the problem. I understand that you were dealing with this issues a while back but I would appreciate if you could share your final findings....of course of you recall :)

Thanks a lot!

[ClayC]

Yes, it's been working fine ever since!! 

-Clay

[Emer@ld]

Cool....thanks a lot for your quick response. Ordering the power cube then.

[towi203]

Let me tell you how I disassembled this dryer 3 times looking for the answers that I found right here. I recently had to replace the oukky wheel and a week later boom no power to control panel out of the blue. Thermistor is good, thermal fuse good, I cleaned the buttons to check for sticking. I visually inspected all the boards. I've had this set for 7yrs and they are amazing. After searching the net I'm glad I came across this post, I am ordering a new cube. Hopefully this is it and I'm not buying a new control board or user interface board.

[towi203]

Power cube came in today and #boom good as new, thanks ClayC for the informative post.

On 12/25/2019 at 8:42 AM, Emer@ld said:

Hi There, I’m having exact same issue on my Kenmore HE5 dryer and have come down to the similar finding on the Power cube as you had. Before ordering the part, just wanted to check with you if it fixed the problem. I understand that you were dealing with this issues a while back but I would appreciate if you could share your final findings....of course of you recall

Thanks a lot!

 

[Gjohn]

On 2/8/2016 at 8:29 PM, ClayC said:

Kenmore Elite HE5 electric dryer

Model 110.87088601

Started a load yesterday and it finished running. I'm not sure if it shut off normally or a little early but the clothes were dry. 

When to put another load in, and the control panel wouldn't power up at all, no lights, no beeps, nothing. Nothing I push makes it turn on. When I open the door, the light comes on, and it will shut off when I push the door switch OR close the door. 

I checked power and I have the proper voltage across all legs at the back of the dryer. 

I unhooked the power for about 10 minutes and plugged it back in and still no control panel. 

I'm assuming I've got a bad panel, but would like a little confirmation. 

thanks!

Clay

 

[Ksjmom3]

Hi. Thanks for posting this. But as a typical woman I am afraid to order the wrong thing as I am not appliance part savvy. Can you tell me where you ordered the power cube? Thanks in advance!

[kausborn]

I'm having the same issue currently.  Can anyone give me a part number or link for the power cube?

Kenmore Elite HE5 Dryer: 110.87088601