Welcome, my name is XXXXX XXXXX I will do my best to help you with your issue.
The thermocouple is what tell the gas valve to keep the gas flowing to the pilot burner. If you have a 24 volt gas valve it's a thermocouple not a thermopile (although the there are a few rare exceptions
Assuming only the top 1/3 of the tip of thermocouple is in the pilot flame and you have a good tight & dry connection at the gas control valve then the next most likely culprit is a faulty gas valve if the pilot won't stay lit when you release the pilot light button/dial on the gas valve. If the pilot is going out after you walk away then the pilot may be too weak and/or the pilot burner orifice may be dirty
A draft is also always a possibility with a wall furnace
You gave me some info but didn't answer any of my questions.
The 24 volt control circuit has nothing to do with keeping the pilot lit
It's 24 VAC
Thanks, XXXXX XXXXX it seem coincidental that the gas valve stopped working and I'm not getting any voltage out of the transformer?
The 24 volt circuit only opens the gas valve for the main burner. I can't say why the 2 things happened at the same time
Even if you had no power to the unit the pilot should still stay lit with good thermocouple and gas valve
Unfortunately you are pretty much confirming what I thought about how the gas valve works, I'm confident that the thermocouple is in properly. but still need to fix the power supply first
crap I gotta stop hitting return more to come
The gas valve says 24V 60cy .23 amp, does that mean I can use any power supply that puts out 24v AC and at least .23 amp or does it need to be exactly .23 amp output?
You can use any 24 volt transformer. A 40 vA transformer is the most commonly used. The .23 amp designation just indicates how much power the valve draws
Do you have a strong pilot?
I suppose I should have said 24 VAC
Yeah I even checked it with a multimeter and adjusted the flame till I got about 32 millivolts, still went out as soon as I let go of the button.
Sounds like maybe a bad gas valve
Do you have an online parts supplier you recommend?
These guys have the best priceshttp://www.pexsupply.com/
But I have heard a few complaints mostly related to slow delivery when they didn't have something in stock
these guys are also goodhttp://bestbuyheatingandairconditioning.com/index.htm
Thanks, XXXXX XXXXX have them bookmarked, I'm gonna pay you now but how do I get back to you to continue troubleshooting if I need to, I'm gonna do the power supply first cause, the furnace won't work with out it, then continue on to the gas valve.
You can just come back to this thread it won't go away. I'll answer related follow ups even after you rate me favorably