alavaz
Trakanon Raider
- 2,003
- 714
HVAC help - my furnace would not stop running; the thermostat was set to 68 and the temp read 75; it was set to heat and on auto. If I turned it to off, it did not matter; it kept running. This made me guess that it was the thermostat; it of course happened last night about 10 and I was in "fuck it" I am not dealing with this right now mode so I went and flipped the breaker. This morning when I awakened it was a comfy 66 degrees (no wonder I slept well) I went down and flipped the breaker; it is now staying steady at 68.
WTH? Thermostat or furnace?
Unless your thermostat is super old, in my (albeit limited) experience it usually turns out to be a sequencer or a limit switch that is stuck when the heat won't turn off. You can youtube a replacement video for any of those parts for your model. It's relatively easy and usually only requires a screwdriver.
Although, the stat might be an easy place to start as you can by one for $30-$40 and wire it up in 10 minutes or so. If it doesn't solve the problem, then just return it.
edit: To add, there should be a little port hole on your furnace somewhere that you can see a little LED through. When you flip the break back on, go walk over to it and see how many times it blinks. That is a status code that you can look up to help you diagnose the issue.
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