No heat

It sounds as though the indicator is the only thing that is malfunctioning on your auto regulator since you have good flow to the stove. While the furnace may require a higher flow of propane, I doubt that the regulator is the issue here. We still do not know if the changeover function works. May want to replace it.

I am not an expert on furnaces so someone else may have to chime in. There is a sail switch that has to come on for the flow of propane to start. This detects air flow. In a rig as old as yours, these can fail or get so dirty that they don't work right. Also be sure the exhaust is not plugged with wasp nests etc. I think that would be a good start.

Shut the valve back off on the tank. Then turn it on very slowly. If opened too fast flow will be stopped.

Are you running on battery or plugged in? To low of voltage and the burner will not ignite, just keep running the fan.

Were you trying to run the heat to make sure it worked even though it was warm inside?

In other words, was the fan set to "lo" or "hi" so the fan ran non-stop but the heat did not ignite because it was set at 72 but it was much warmer in the camper.

Just checking the simple things first.

I do know the indicator on propane indicators can be bad. I've had several that just did not work. As far as heater my only experience is I had the board go out. I also know if you have run out of propane while heater is not, you will need to turn heater off and then back on.

greende wrote:
It sounds as though the indicator is the only thing that is malfunctioning on your auto regulator since you have good flow to the stove. While the furnace may require a higher flow of propane, I doubt that the regulator is the issue here. We still do not know if the changeover function works. May want to replace it.

I am not an expert on furnaces so someone else may have to chime in. There is a sail switch that has to come on for the flow of propane to start. This detects air flow. In a rig as old as yours, these can fail or get so dirty that they don't work right. Also be sure the exhaust is not plugged with wasp nests etc. I think that would be a good start.

Well had a similar incident last winter with our furnace. Went to the coast tanks full and opened correctly. Furnace would fire then go out immediately would not stay on. Used electric heaters for the remainder of the weekend. Checked out furnace on return all was good, replaced regulator and now works like a champ. The stove worked great during this time.Keep in mind the burners on the stove don't use a lot of propane, it you turn off the propane the a burner of the stove will continue to burn for close to 2 minutes.

Well, heat worked this morning when i tried it. This is not the 1st time this happened.

Thermostat set at 80, just blows cold, temp unside was 61. Wondering if burner uses 12v to ignite, and does that 12v come from a converter or directly off the batteries?

Furnace is 12V DC power via FUSED circuit fed from DC Dist Panel and powered by converter IF on shore power source OR from Battery when NOT on shore power source.

Motor needs good 12V DC power to come up to full speed. Motor drives 2 fan wheels...1 side for combustion/exhaust and the other wheel is room air

T-stat calls for 'heat' ----motor starts....fan blows (cold room air) until 'timer' runs and 'sail' switch makes up (sail switch is safety device that has a paddle that sticks out into airflow stream)...enough airflow and paddle makes up allowing 12V DC to circuit board for gas valve and spark ignition.

Low 12V DC..low motor speed ..........no 'sail' switch making up/no DC for gas flow-ignition.

Furnace and HEATING......LOW 12V DC



Propane Indicator.
IT has failed.......time for new LP Regulator
You have gotten your monies worth out of that OLD regulator
Fact is......time to replace it AND the pigtail hoses that go from cylinders to regulator

Cavanga Regulators are very good quality

Gotcha, will start looking for a new regulator.

How to test if the onboard battery charger is working or if its the batteries?

May found the heat problem. Anyone ever put grease on these to prevent corrosion?