I've searched high and low for an answer through Google but can't seem to find the answer.
We have hot water radiators and in floor hydronic heat, with a gas powered boiler. We've awoke with no heat for the past few mornings. We thought it was the thermostat so we've replaced it. But now we think it is an air circulation issue. When the boiler is not turning on when it's supposed to, as soon as I remove the front panel, it fires up. I've tried leaving the door to the furnace room open, but that isn't enough. It will only work when I remove the front panel.
Does anyone know what might be cause this?