Kitchenaid Gas Dryer Not Heating - KGYS977EQ0

[ethermion]

I get a flame for about 10 seconds or so, then nothing.  No more heat for the rest of the cycle.

 

Ignitor = good.  Glows nicely and starts the flame.

Flame Sensor = good, I guess.  Ignitor shuts down as soon as the flame catches.

Thermal Fuse = good.

Thermistor = good, maybe (ohms about 7k - chart says that's for 90 degrees, which it ain't in my house.  Should be closer to 12k)

Hi Limit Thermostat = good (not shorted, at least)

Gas Valve Coils = good.  Both pretty much spot on.

Worked fine for 23 years.  Not sure why it is getting fussy now.

 

Also, have no idea how to get the belt idler thingie back on - but we aren't there yet.

Thoughts anyone?

[Vance R]

If you have good airflow the odds on bet would be the gas valve coils breaking down under load.

[16345Ed]

13 hours ago, ethermion said:

Gas Valve Coils = good.  Both pretty much spot on.

Yep as Vance said these like to fail once they heat up. Testing them cold is inconclusive that they are good. 

[ethermion]

Roger that.  I'll order up a new set and we will see what happens.

Thank you kindly for both replies!

[16345Ed]

On 7/12/2020 at 3:16 PM, ethermion said:

Roger that.  I'll order up a new set and we will see what happens.

Thank you kindly for both replies!

Let us know. 

[ethermion]

All-y'all be rockstars.

Bride reports dryer works better than new.  Coils were the trick, which I never would have guessed on my own.  Replace the thermostat too, for just a few tenge more - new one ohmed out at 9k instead of 7k, and Lovely Bride notices extra heat and is very pleased.

Getting the drum back on was a two man job, but just a few minutes.

Found the receipt for this precious posession.  $2,000 in 1997.  I ain't letting it go for nothing.  They don't make 'em like that any more.  Very sad I let said bride talk me into replacing the matching washer, but that water is long over the bridge.

Yep, rockstars y'all are.

Case closed on this one with a very happy ending!