SF 42 furnace madness
So, turned on heat and got fan but no ignition. Pulled furnace and cleaned, while also doing a tune-up. New sail switch, new overtemp switch, new ignitor and new burner installed. Bench tested 12v + a...
Forum Discussion
Thanks Chris. I have 8 wires coming out of the t-stat with only one blue wire. I'm not understanding what you mean about swapping the blue thermostat wires?
