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Is My Vaporstat Causing This Problem
Around midnight I noticed that my boiler hadn't turned on even though the t-stat was calling for heat. I have single pipe gas steam, a Burham IN 11, and a Honeywell vaporstat (the kind with the mercury tube inside). I visited my boiler in the basement and didn't notice anything amiss. The water level seemed fine. I did not smell gas.
Then by accident I turned off the switch for the electrical to the boiler. I then turned it back on, at which point the red light on the low water cut off blinked. Then the burner turned on and the boiler started to make steam. It did make an extra kind of noise that I usually don't hear at start up. Very hard to explain. I thought it might be water filling into the boiler but the water gauge wasn't disturbed.
The boiler then made steam as usual. Then it cycled off due to pressure and never turned back on, even though the t-stat was calling for heat. That was around 1:00 a.m.
I kept waiting for the heat to turn on again. By 2:20 p.m. there still was no heat. I went down to the basement and turned the electrical switch and the boiler turned on again, same as before, and made steam until it cycled off. It did not cycle on again even though the t-stat was not satisfied.
I guess I need someone to come out and look at it. But it is the middle of a blizzard. I don't know if I can get anyone out on a night like this.
I don't know how fast I can get someone out. Any thoughts about this problem would be appreciated.