Forum Discussion

deehinson01's avatar
deehinson01
Explorer
Dec 22, 2014

Furnace blower is not coming on

New to this RV experience. I know just enough to get me in trouble as my daddy would say.
My furnace blower doesn't come on. It is supposed to kick on within 15-30 seconds, then the burner is ignited and air is warmed.

I've googled my problem and have already checked off this:
1) check thermostat setting. My thermostat doesn't have an on/off/auto. You slide the dial. Done.
2) check pilot light. I have direct spark ignition. Done.
3) check the battery charge. (not sure)
4) check the propane. Done.

The question I have is this: If I am plugged into a dedicated utility line, will the battery charge make any difference?

If not, what else could be causing it not to come on? It was working fine Saturday.

7 Replies

  • ksg5000's avatar
    ksg5000
    Explorer II
    Dec 22, 2014
    midnightsadie wrote:
    gee I always though YOU HAD TO HAVE A good charge on the battery even plugged in.?? must be the newer than 2006 rv,s that don,t ? any help on this appr. check charhed battery,, did you open the propane bottle? check fuse??


    To the best of my knowledge most converters these days will operate just fine without a battery hooked up - and my converter was replaced in the late 90's .. like most things there are always exceptions. Whether the furnace fan operates without a battery may depend on how it's wired.
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    Dec 22, 2014
    One other comment: check the LED's on the furnace's circuit board. Certain faults will flash as sequence which can be interpreted in your manual. That is, if the LED's come on at all.
  • Cobra21's avatar
    Cobra21
    Explorer
    Dec 22, 2014
    I would check the battery, if it is shorted (fried)this could be a game stopper.

    Brian
  • midnightsadie's avatar
    midnightsadie
    Explorer II
    Dec 22, 2014
    gee I always though YOU HAD TO HAVE A good charge on the battery even plugged in.?? must be the newer than 2006 rv,s that don,t ? any help on this appr. check charhed battery,, did you open the propane bottle? check fuse??
  • ksg5000's avatar
    ksg5000
    Explorer II
    Dec 22, 2014
    To answer your question about being plugged into shore power ... most modern converters don't need a battery to operate the DC side of things so when your plugged into shore power everything that depends on DC (including the furnace) should operate - even if you have lousy batteries. If you have access to shore power that should rule out batteries as an issue.

    If your furnace fan isn't working the first thing I would check is the thermostat - doesn't cost much to replace.
  • enblethen's avatar
    enblethen
    Nomad
    Dec 22, 2014
    Blower should come on as soon as the thermostat calls for heat.
    You may have lost 12 volts DC power to furnace. Blown fuse in 12 volt distribution panel.
    Your thermostat may have failed. What is make and model of it? You could remove cover to thermostat and connect the two furnace wires together to bypass thermostat. Furnace should start immediately and produce heat in 15-20 seconds and continue to produce heat until the wires are separated.

About Travel Trailer Group

44,060 PostsLatest Activity: Jul 17, 2025