Suburban SF30q quit during the night
Full timers and our primary furnace quit overnight-fan will not run. Power to furnace, can hear click on control board when turning on but no fan. Power from thermostat into blue wires for heater bu...
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It could have also been a stuck sail switch- the new fan control boards will not start the blower if the sail switch is closed without the blower running. The original board may well be OK.
