Kenmore gas dryer, 110.78062801 wont heat

Dryer Repair
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1

Kenmore
110.78062801
Not heating at all

Replaced gas coils, thermostats on burn tube, & flame sensor. I was sent the incorrect ignitor or that would be replaced as well. Existing ignitor was tested at 120 ohms but would not tone out on the meter. I re used it anyway. After replacing everything and putting the machine back together, tested with back off, ignitor not glowing, no gas flowing. Timer appears to work fine. Please help!
Photos / video link:

2

The first thing to check would be to ensure you have 120VAC getting to the igniter. If you have 120VAC to the ignitor and it does not glow, it would need to be replaced. If you do not have the 120VAC to the ignitor, it could be a thermostat, thermal fuse, or the control.

3

Thanks for the tip. There is not 120vac going to the ignitor. I did replace the thermostat and my dryer does not have a thermal fuse. I guess that leaves the control. Is this the timer that everyone talks about?

4

Based on the model number your machine has an electronic control board instead of a timer. Does the machine run with no heat or does it not run as well?

5

The machine runs normally, but no heat. I am seeing zero action out of the heating system what so ever.

6

To check the main control using a multimeter with the machine running and set for heat, place one lead on the P8-3 terminal and one on the COM terminal of the heat relay. You should read 120VAC; if not, the main board has failed.

7

Hi,

Thermal fuse tested ok?

jeff sr.

8

I am to understand that my model does not have a thermal fuse. At least none that i can find. Model 110.78062801

9

Thanks Brad. I will test the control board this evening after work. Is the heat relay clearly marked?

10

Here is the tech sheet:https://s3.amazonaws.com/sm-backend-production-attachments/techsheet-w10156035a.pdf

11

Here is the parts list. I would check the thermal fuse on the blower housing # 58.https://s3.amazonaws.com/sm-backend-production-attachments/parts-list-W10221586-RevB.pdf

12

Yes this would be the first place to go!

13

Thanks Bigbuck. I found the techsheet under the control panel housing and was able to work my way through it. It was indeed the thermal fuse on the blower housing. Unit is back up and running like a champ! Tha ks for the help everyone!

14

Glad you got it going! :smiling_face_with_sunglasses:

15

Yes, on your style/model# the thermal fuse is on the fan blower housing.
On gas dryers the heat stops working when the thermal fuse is open and on electric dryers often the whole dryer stops working when the fuse is bad.

jeff sr.