My sister's furnace gave out, it's a rental (guess they got suckered into it) and they can't come fix it till tomorrow. What's the point of paying all that money if you can't get 24/7 support? I thought that was the whole idea of renting. Went to check it, it's a super sloppy install, they never even bothered piping the fresh air intake outside, so it's losing out on efficiency.
Also, is it common for the combustion chamber in a furnace to actually be open? Normally they are a separate enclosed part of the furnace.
It starts all the way up to the point of having ignition, but then it just dies. I would think maybe the flame sensor, but I would expect it to run a little longer if it was that. It pretty much dies as soon as the flame goes on. I was suspecting the thermostat so I shorted out the contacts.... but, the wrong contacts. Blew a fuse. Didn't want to probe in there more than that in case I blow something else and didn't have a spare fuse, so it will have to wait till the rental company can go and they'll just act dumb. Don't think you're suppose to touch it if it's a rental, but it's crazy to make people wait, so was hoping I could get it going for them. Thankfully they have a fireplace as backup so at least their pipes won't freeze.