| Do you..
Do you have a secondary drain pan with a water sensing float - Or it could be a float in the condensate drain line directly. If it is active or Open,( water making the float break the control voltage) the Tstat will most often go blank. If the float is open, the float is stuck if it is dry, or if it is wet, you have a drain clog problem which the float is keeping the unit from damaging your home with water overflow! |