It's definitely on my list, I'll replace it/get it replaced this summer if I can obtain the part affordably. First priority is the buzzy gas valve-- I presume buzzing means functional failure is on the horizon and I'd like to beat it to the punch. Not sure if I can just replace the coil or if the whole valve has to be replaced.
It appears that the gas valve is connected exclusively to the electronic pilot control, which is fed through the heat relay and R/24vAC. Is it as simple as checking the gas valve terminals for 24vAC?
I'm inclined to suspect it's the gas valve itself because everything (else) is functioning perfectly. I would ASSUME (never a good idea) that if something else was failing, i.e. the pilot control, some other symptoms would occur i.e. a weak pilot light. Also the buzz is quite loud, I've never had that particular symptom from low voltage before:
On the other two identical units, the FLC control connects to the FTDR. On this unit, there are no terminals on the FTDR for it to connect to. If I were to reconnect it, I would have to splice it in, or get those one-to-two spade terminal connectors. Odd that there's not even a place to connect it.
Contractor Talk - Professional Construction and Remodeling Forum
A forum community dedicated to professional construction and remodeling contractors. Come join the discussion about the industry, trades, safety, projects, finishing, tools, machinery, styles, scales, reviews, accessories, classifieds, and more!