It's 3:15am and got a big snowfall the past 2 days, and it is now -12F outside. I have PROPANE (tank has 55%) and my heater is cycling on/off, but not going FULL ON. Please see the youtube video showing what is happening:
This happened a few years ago, and back then, I went outside and pushed off all the snow on the tank and the valves, and this somehow solved the problem. I did the same this time, but it didn't work - but it's a lot colder outside this time. The valves have a "cover" over them, but I noticed some ice crystals on one of them -- I really don't know what I'm looking at.
Last time I asked my propane company what might cause it, and he said "maybe some water got in the valve and froze up" (or he said something like that). I don't have any heat tape to wrap around the control valves on the tank; I'll try to see if I can hook up a low wattage light bulb.
Any other ideas or help?!?