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...
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My furnace depends on both the thermostat AND the control board up in the AC intake duct. You might need to check for power to that board. Also read where exercising the dip switches on that board, meaning if a switch is off flip it on then back to off, if on, flip to off then back on.
What brand of tstat? Might need a reset.
What brand of tstat? Might need a reset.
