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Need help on a Peerless gas boiler
I have a Peerless gas boiler with a vent damper and a Honeywell Aquastat....the boiler was not firing everyrime and when I went there to troublshoot I found the problem with the vent damper...so I locked the damper open and had no issues until last night...the vent damper was locked open, there was a call for heat and the pilot was lit, but the boiler didn’t fire and the temp in the boiler was 120 degrees. Any thoughts on what the problem could be? Could it be an aquastat problem? I don’t think it’s the gas valve because the pilot was lit. Thanks in advance for the help.