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340mav

  1. Bryant 340MAV - Control board just flashes

    HVAC
    I have a Bryant 340MAV furnace with a United Technologies HK42FZ009 control board. When the thermostat calls for heat, the blower comes on, but the burner doesn't and there is no heat. The inducer motor never comes on. The LED on the unit flashes steadily, but the AC polarity is correct. The...
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