Help with a Flooded Furnance
The mother-in-law's furnace was flooded last week and an insurance settlement is dubious at this time, plus my labor is pretty cheap. While it isn't winter its still cold enough here that a little heat would be nice.
It's an Byrant, probably from the early 90's. While there is a tag I can't read what's printed on it.
Replaced the control board today. Part HH84AA021 That got things working to some degree. Draft inducer, blower motor, and the ignition system sparks. What I'm not getting is any gas to the pilot. I know the gas valve was under water - pulled the pressure ports and water flowed out. Near as I can guess, and it's a guess, it's a White-Rogers 36E93-303. I can jump out the appropriate terminal and get gas to flow through a main valve. What I don't know is why there isn't any gas coming out for the pilot. Perhaps there's enough water left in there to prevent gas from flowing.
I'm also wondering if the pressure switch might have something to do with all of this. It's got three (3) terminals and all have voltage and there is voltage at the pressure switch terminal on the gas valve. From what I can tell from White-Roger's documentation, the pressure switch on the gas valve is normally closed but just do double check, I pulled the wire with no change.
Obviously I need to replace the gas valve but what I'd like to avoid is spending any more money than necessary or stringing this out any long than necessary. We've got a local HVAC place where the folks are helpful but the prices are kind of high. If I have to replace several components, I would prefer to find an online vendor and trade the time for money.
Any suggestions would be much appreciated.