Furnace runs for 8 minutes at a time.
This is driving me nuts. For the past few months, my furnace has adopted this annoying feature in that it only runs for eight minutes at a time. To make it run more, you have to turn the thermostat ...
Forum Discussion
I started doing some of the recommended diagnostics this morning. Some interesting findings..
I turned it on and observed the flame... nice, strong flame with the electrode in it, glowing orange. Blowing nice, warm air. Which it continued to do... and do... and do... after twenty minutes I shut it off.
What I noticed while it was running was that those metal "canisters" (for lack of a better description) where flame is and the air inside is ignited, gets seriously freakin' HOT. I used my infra-red temp probe and measured the middle one (of the three) at 590 deg at the top of it.
I'm starting to wonder if this thing IS getting too hot. BUT, like I said before, there's no limit switch in there right now. It's bypassed. So with the metal panel over it, it runs for 8 minutes and shuts off. What might make it do that if there's no limit switch working? But with the plate off so it just blows hot air directly into the trailer, it keeps running.
Here's a pic:
The black things in the middle are the canisters I'm talking about.
I turned it on and observed the flame... nice, strong flame with the electrode in it, glowing orange. Blowing nice, warm air. Which it continued to do... and do... and do... after twenty minutes I shut it off.
What I noticed while it was running was that those metal "canisters" (for lack of a better description) where flame is and the air inside is ignited, gets seriously freakin' HOT. I used my infra-red temp probe and measured the middle one (of the three) at 590 deg at the top of it.
I'm starting to wonder if this thing IS getting too hot. BUT, like I said before, there's no limit switch in there right now. It's bypassed. So with the metal panel over it, it runs for 8 minutes and shuts off. What might make it do that if there's no limit switch working? But with the plate off so it just blows hot air directly into the trailer, it keeps running.
Here's a pic:
The black things in the middle are the canisters I'm talking about.
