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Hydroflame Furnace JL 9-17-15  
I have had some trouble with my furnace and winter is coming...

1. The furnace will not work - blower turns on, ignition sparker kicks, but no flame.

2. If I turn off the gas, drain the lines, take apart the gas valve, then reassemble it, the furnace will work just fine until we drive to our next destination where we will find...

3. See #1.

Any thoughts?
Re: Hydroflame Furnace BUBBA THE BUS TECH 9-17-15  
1 question Are you draining oil from your LPG system? or are you just bleeding it down and doing this work?

If you are draining oil you need to do a proper clean out of the system.

If you bleed it down I am going to hazard a guess that you have a motor home and you burn no lpg for fridge etc on the road.

The LPG system is heating up on the road and going to lock up in over pressure until the system needs to go to 0 pressure.

Just a guess though.
Re: Hydroflame Furnace JL 9-17-15  
Thanks for checking in.

The furnace is in a 1986 Chevy Get-Away Van.

When I do the operation, I'm turning off the gas at the propane tank, then turning on the stove to burn off any propane left in the line.

I'm not sure what you mean by draining oil.

We continue to run the fridge on propane while driving. If it matters, the propane runs the fridge, stove, and furnace, but not the van engine.
Re: Hydroflame Furnace BUBBA THE BUS TECH 9-18-15  
Residual oil left from Propane in the lines of an RV can cause all sorts of problems including stuck LP valves low or no LP flow, Varying LP flow, damaged LP regulators and whole host of other problems.

The clean out usually means flairing off your LPG tank, replacing the LP regulator at the tank, Disconecting all the appliances and flushing the lines with Alcahol. It is a several hour process.

But from you description I am unsure this is your issue. I would check though. Turn of LP gas, Crawl under the rig and disconect the regulator from system on the low pressure appliance side. If there is oil in the line you need to flush it.

Good Luck
Re: Hydroflame Furnace JL 9-18-15  
Thanks Bubba. I'll have a go at it.

We paid big $$$ for a gas service this spring and would have hoped they'd done that. They replaced the regulator and some of the gas lines.
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