You may also be having a faulty pilot light
Most homeowners do not supply their furnaces a minute thought until it begins malfunctioning, however there is nothing more aggravating than having your furnace cut down on a cold day of serious winter, multiple reasons explain why your furnace fails to start when you turn on the heat! First, it could be control unit-related troubles, and you should make sure that your control unit is switched to the heating mode; Ensure that the temperature that you set your control unit on is lower than your current ambient temperature in your home. You may also have an internal control unit problem that requires to be repaired by an Heating plus Air Conditioning professional. You may be experiencing power troubles that are causing your furnace not to kick on, then regardless of the fuel genre you use to power your Heating plus Air Conditioning system, it still needs electricity to start! When the fuse which powers your furnace trips, your furnace will fail to start. Ensure that the power cord has no damages plus that the power switch is in the ON position, if you discover any burn marks on your furnace’s control board, there might have been an electric short. You may also be having a faulty pilot light. If the pilot light is out, your furnace won’t kick on. If you light your pilot manually, but your furnace still kicks on, the problem could be with the sensor or assembly, then a full condensate line, which blockages may cause in the pipe, may also stop your furnace from kicking on. It also helps to ask an Heating plus Air Conditioning professional for a minute opinion in serious cases.