Heatilator GNDC36L propane stopped burning

[joe_pinehill]

My heatilator was working fine last night. Then went out. I can light the pilot , but it will not stay on, after holding the valve down for 1 minute.

It is a push button magneto ignition with standing pilot light

Any suggestions for trouble shooting?

 

[DAKSY]

Do you have a multimeter? Set it to Millivolts DC & take a reading on the Thermopile.
You need to take a reading at the TH-TP & TP terminals on the gas valve...
The reading should be above 325mV, & ideally around 550mV.
If you don't get good numbers, replace the T-Pile.
You can get a Universal Millivolt Generator at True Value or Ace Hardware for about $50.

 

[joe_pinehill]

Do you have a multimeter? Set it to Millivolts DC & take a reading on the Thermopile.
You need to take a reading at the TH-TP & TP terminals on the gas valve...
The reading should be above 325mV, & ideally around 550mV.
If you don't get good numbers, replace the T-Pile.
You can get a Universal Millivolt Generator at True Value or Ace Hardware for about $50.

Is that the reading when the Thermopile is cold?

 

[DAKSY]

With the PILOT on.

 

[joe_pinehill]

The thermopile measured 430mV steady state. And the pilot stayed on, and the fireplace lit.

Could this be an intermittent in the thermopile? I think it says the valve is probably ok?

 

[DAKSY]

Could mean the T-Pile is failing. They generally fail over a period of days,
rather than just suddenly stopping...I would get a back up just in case.
Valves very seldom fail.

 

[joe_pinehill]

Could mean the T-Pile is failing. They generally fail over a period of days,
rather than just suddenly stopping...I would get a back up just in case.
Valves very seldom fail.

Yes, for $30 I think its worth having. The fireplace is really just decorative. I was going to order this one. Thanks for your help. First gas fireplace Ive had, all my experience is with pellets.

http://www.stove-parts-unlimited.com/Quadrafire-Heat-Glo-and-Heatilator-Thermopile-p/2103-512.htm

 

[joe_pinehill]

Could the limit switch have stopped the burner. I had the fireplace on last night, and it ran for hours. That could explain why I couldnt relight the burner when it did shut off?

 

[DAKSY]

I don't believe there IS a limit switch anywhere in the system.

 

[joe_pinehill]

Daksy, I believe you are correct, only wires going to the valve are the wall switch and thermopile.