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Your electric furnace is not going to be able to do you much good without your contactor. You will need this in order to keep the temperature in your home nice and comfortable during the winter season. Sequencer. A sequencer used on an electric furnace is something that will turn your heating elements either on or off. It can do this to more than one should this be necessary. A sequencer is needed because it helps to keep the current spike that is electric down. This is something that can happen whenever your electrical device becomes energized in any way. It does not take much for your electrical device to become energized.
The inducer assembly creates a draft through the furnace, which closes the pressure switch and creates the suction of the vent. All parts of the inducer assembly must be working correctly, or the furnace will not function correctly. A malfunctioning inducer motor is a safety risk due the potential carbon monoxide build-up.