old 80's arco air pilots lit but no burner action

[3650]

the pilot comes on no problem. The thermo coupler leads to a mercury switch, all one piece. I suspect this is the culprit. Is there a way to test it. Bypass for test only? It has three prongs. I'd like to eliminate it before moving on to gas valve.

 

[DAKSY]

Take a picture of the pilot assembly & post it.
We need to se what you're dealing with...

 

[3650]

Here are pics of the thermo coupler / pilot, mercury switch and gas valve.

 

[DAKSY]

What kind of unit is this Gas stove? Fireplace? Furnace? Not really familiar with the manufacturer.
Is there a model number on the unit? Google tells me there is a manufacturer called Arcoaire.
Is this the manufacturer of your unit?

 

[3650]

yes thats it. Its a furnace.

 

[DAKSY]

OK. I'm thinking you need to visit a home heating forum like this one:
http://handymanwire.com/ubbthreads/ubbthreads.php/topics/633021/ArcoAire_Furnace_Not_Firing
Where the techs and members are more in tune with your type of unit.
Sorry, I'm not able to help.

 

[3650]

Thanks for the help. I just went ahead and started jumping things. I jumped the mercury switch and the gas valve a few times they sounded like they were engaging. Then I called for heat and the burner kicked on. I think I may have just had a sticking valve. This furnace hasn't been used in ten years as I've been burning wood pellets. I bought propane this year because it was cheaper then pellets. I've got lots of carbon monoxide alarms around so if things go south hopefully they alert me.