Not sure what brand insert I have - it was here when we bought the house.
Unit works fine until the temp gets well below freezing...then it does strange things.
Wake up in the morning, and the pilot will be out - try to light it and maybe it will, maybe it won't. If I get it lit, I will let it warm up for at least 5-10 minutes before turning the dial to ON. Usually it will just go right out. If it does stay on, when you turn the unit on via the light switch, the flame will start around the burner just fine, but then it backs up towards the pilot and will get really tall and only about 4" down the burner. The flame will be almost 100% blue.
When that happens, I immediately turn the unit off (at the light switch), and the pilot will flicker like there is a high wind coming down the chimney, but it is dead still outside.
I thought maybe it might be due to the meter and 30' of the supply (in the garage attic) being exposed to the extreme cold, but the furnace and hot water heater suffer no ill affects.
Any thoughts? I can't get a service guy out during our cold spell, and once it gets above freezing in the next day or two the issue will be gone again.
Thanks
Unit works fine until the temp gets well below freezing...then it does strange things.
Wake up in the morning, and the pilot will be out - try to light it and maybe it will, maybe it won't. If I get it lit, I will let it warm up for at least 5-10 minutes before turning the dial to ON. Usually it will just go right out. If it does stay on, when you turn the unit on via the light switch, the flame will start around the burner just fine, but then it backs up towards the pilot and will get really tall and only about 4" down the burner. The flame will be almost 100% blue.
When that happens, I immediately turn the unit off (at the light switch), and the pilot will flicker like there is a high wind coming down the chimney, but it is dead still outside.
I thought maybe it might be due to the meter and 30' of the supply (in the garage attic) being exposed to the extreme cold, but the furnace and hot water heater suffer no ill affects.
Any thoughts? I can't get a service guy out during our cold spell, and once it gets above freezing in the next day or two the issue will be gone again.
Thanks