My RV Furnace Stays On After The Thermostat Temperature Has Been Reached

Question:I have a 1999 holiday rambler vacationer with a duo-therm comfort control. The furnace will continue to run after the set temp has been reached. I assume the control has gone bad. Am I missing anything else that could cause this condition?

Robbie:If just the fan is running the time delay switch could be bad, this switch allows the fan to continue to run for a few minutes after the flame shuts down to allow cooling of the burner chamber. If the heat is not shutting off you could have a bad thermostat or a sticking gas valve and should have a tech look at it before you use it again.

Thanks for the Question Good Luck,

Comments for My RV Furnace Stays On After The Thermostat Temperature Has Been Reached

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Jun 20, 2019
Furnace trouble NEW
by: Anonymous

Our furnace tries to run even when it's turned off we even took the fuse out and it still tries to start

Nov 20, 2017
Furnace does not heat NEW
by: Jill

We just purchased a 2004 Coachman Concord and the furnace does not heat. The fan works with the thermostat and you can hear clicking as I think the furnace attempts to ignite but it will stop trying and then in a few minutes try again. The camper has been in Florida so imagine the furnace has not been used often. Any ideas? Thank you

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Robbie Warford, San Diego RV Repair

Hi, I'm Robbie. Welcome to!

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