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View Full Version : Gas Fireplace main burner will not light, pilot is fine


manwithaproblem
Nov 17, 2008, 09:32 PM
Hi all. I've got my pilot to light no problem. Then I turn gas knob to "on" as per instructions. I "adjust" switch on thermostat on wall only to hear clicking noise coming from inside panel of fireplace but the main burner doesn't light (like it used to last winter). I believe it's the main valve making clicking noise but not sure. Any ideas on what to check?

I have a multimeter and took these readings at the thermostat:

1) switch turned off = .370 Volts DC
2) switch turned on = .016 Volts DC (and clicking noise of what I believe is valve firing).

Also took these readings under panel:

1) with thermostat off : TP/TH to TH terminal = 0.386 Volts DC
2) with thermostat on: TP/TH to TH terminal = 0.034 Volts
3) with thermostat on: TP/TH to TP terminal = 0.199 volts

One other note; when I turn on thermostat, the blue pilot flame does extend a little to the right and left. But definitely doesn't turn on to make any noticeable heat.

Any help would be greatly appreciated.

manwithaproblem
Nov 18, 2008, 09:20 PM
Actually, I think my main burner is "sorta" lit since the flame is going across the burner... except its only a short blue flame across. HOw do I test gas pressure?

hvac1000
Nov 19, 2008, 04:44 AM
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