ATF: North Trail - Furnace

rkymthi

Member
I have had the 5th wheel two years and the furnace still will not work. The repair center told me that it was my batteries. Replaced batteries with new and the furnace will not light and the blower will not come on. Hooked up to 110 VAC to provide power through the converter and the furnace will not start. The fan and the air conditioning will work when using 110 vac. Not sure whether to try rv america service again no help the first time
 

danemayer

Well-known member
Hi rkymthi,

Welcome to the Heartland Owners Forum. There's lots of useful information here along with a great bunch of friendly and helpful people.

If the furnace blower doesn't start, it won't allow the gas valve to open to light the furnace. The blower has to get up to 75% of normal speed to trigger what's call the sail switch. After that, the furnace will try to light.

When the thermostat calls for heat, it signals a relay to turn on the furnace blower and signal the furnace control board that heat is needed. You should hear a click, probably overhead near the air conditioner air return. If you don't hear a click, either the relay is bad, or it's not getting the signal from the thermostat.

Low battery voltage could be responsible, but presumably the service center was able to run the furnace successfully while connected to shore power. You should also be able to.

Suburban Furnaces usually have a 2 year warranty from Suburban. Even if you're just over the 2 year mark, Suburban customer service might still cover another service call since you had the earlier service call.

We have an owner-written heating and cooling guide that has some additional information you might find helpful. Here's a link.
 

hoefler

Well-known member
I would disassemble it and look inside the burner chamber, especially the blower. It may be full of a wasp's nest and simply won't let it spin. Been there done that.
 
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