I spent day 4 studying way more about troubleshooting a gas furnace than I ever wanted too.
My shop heater has been kicking out a high temp roll out switch and will not stay running more than 5 minutes, and it’s just too damn cold out there to get anything done without heat. So all my projects have been on hold why I try and figure this out…. I’m too cheap to get a technician out here. Besides that, they are too busy to mess with a little shop heater, and swamped keeping people’s furnaces running. I call two different shops after hitting a brick wall….
But….. I did have a real nice guy call me back a couple days ago and spent some time on the phone with me going though the trouble shooting process. I had to purchase a manometer to check the gas flow pressures and call him back today.
This one was tough one one to pin down, but it looks like my heat exchange unit has a crack in it. When the fan comes on, one of my flames is fluttering just enough to push too much heat back into the manifold box and trip the roll out sensor…..
Good news is…. The $200 part is covered under warranty, and is on its way… The bad news is I’m going to have to pretty much tear the whole heater apart to replace the heat exchanger…..
Not what I call a fun project…. But what’s a guy to do? I need heat to work out there…. I’ve been down for a week now messing with this dad burn thing. Kirk