Regulator icing up is usually a sign that liquid propane is getting in to
it. The expansion is causing the refrigeration effect like an expansion
valve on an AC system. Tank overfill or severe off level. If the regulator
cannot handle the flow that can also be an issue. The regulator should be a
two stage type to further prevent liquid from getting to the appliance. 

Dennis 

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Danny C.
Sent: Tuesday, November 23, 2010 10:57 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Propex heater or regulator

So its 22 degrees out here in Oregon and my propex heater is having issues
with staying lit. i noticed the propain regulator is getting iced up and i
think it is causing problems with the flow. is this common? the heater is
running but i noticed it cutting out and then relighting its self. do you
think the regulator is going bad or just icing up? there is about an 1/8th
inch of white ice on the regulator. i will be sleeping in the van tonight
and hope to god it is going to stay running while im sleeping. I did notice
when I first tryed to run it tonight it did not light and I got the red
light flashing 2 times. then I tryed to light my burner and got no propain
smell or gas to the burner. I went out and tapped on the regulator with a
rubber hammer. and the gas to the burner started flowing. then i re started
the heater and it lit. so i know the regulator was an issue in the
begining..... Let me know what you think. Thanks 

Danny C.
Portland, Oregon
'84 Westy (Vanny)
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