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Fired up boiler for the first time, turns off after a few minutes, internal siphon pressure high
Hi. Just fired up the boiler for the first time this season and after about 10-15 mins I noticed nothing was happening in my office. Went down to the basement and the boiler was hot, but not on. No heat had been pushed. Thermostat shows "heating". It was not doing an intermittent water check. I then noticed the internal siphon pressure was almost 14psi. Pressuretrol is still at the level its always been, .5psi. If I remember correctly, the internal siphon is often not a good indicator of anything, but in years past, it has always remained somewhere in the range of 2-5psi.