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okweldit 10-01-2011 12:53 PM

furnace gas valve
 
Having problem with my furnace pilot light. The pilot is very weak and not enough to light the furnace. I can trick it by keeping the thermocouple hot until the furnace lights, I seem to have adequate gas pressure for the burners but a very weak pilot. Does a gas valve go bad controling the pilot light? Any thoughts? Heil furnace- sv9541 gas valve- auto pilot

jpingra5 10-01-2011 08:10 PM

Sounds more like the gas valve than the thermocouple to me possibly since you do have a flame but a weak one. The thermocouple is what sends signal to the gas valve to allow gas to flow. Either that or possibly the orifice is dirty or clogged.

Tator1076 10-01-2011 09:30 PM

Quote:

Originally Posted by okweldit (Post 739533)
Having problem with my furnace pilot light. The pilot is very weak and not enough to light the furnace. I can trick it by keeping the thermocouple hot until the furnace lights, I seem to have adequate gas pressure for the burners but a very weak pilot. Does a gas valve go bad controling the pilot light? Any thoughts? Heil furnace- sv9541 gas valve- auto pilot

You need take pilot apart and clean out the orifice. That a very small hole a piece of a wire brush can go through that hole to make more flow of gas


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