Furnaces without Air Conditioners
When an electric furnace is installed without an air conditioning unit, the furnace should be shut down at the end of the heating sea- son. The procedure for doing this will be found in the furnace owner’s manual. It is a simple operation that generally consists of opening the main fused-disconnect switch (or switches) in the power-supply lines serving the furnace.
Troubleshooting an Electric Furnace
Any appliance may sometimes fail to operate efficiently because of a malfunction somewhere in the equipment. The problems most commonly associated with electric-fired furnaces are listed in Table 14-4.
Caution
DEADLY HIGH-VOLTAGE CONDITIONS exist within the cabinet (case) of an electric furnace. Do not attempt any troubleshooting if it might involve contact with electric controls and components unless you are a trained HVAC technician or have equivalent experience with electric furnaces.
