--Payneful furnace--
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Our Payne gas furnace has developed a frustrating habit of turning off whenever the temperature drops, usually below freezing. The thermostat still reads 'heating,' but the blower and all sense of life is out. We reset it by turning off the power, draining the line, waiting a few minutes, then turning it back on, and 100% of the time it restarts immediately.
The service man cleaned off some residue around the ignitor and had us raise the exhaust pipe outside a bit, but no change. Now they just want to start randomly replacing parts to see if anything fixes it.
Anyplace best to start? He didn't think there could be any water in the system or that cleaning our vents would help, but that was our best guess.
Thanks.
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