Furnace Blower Motor Switch

Furnace ac blower motor replacement or how to replace your furnace blower motor.

Furnace blower motor switch.

This assembly is designed for 40 60 80 and 100 thousand btu model furnaces. To restore the furnace to normal operation you must reset the switch on the blower motor. When the furnace heat exchanger heats up the bimetal twists causing the round dial shown in the picture to turn. Please visit my amazon store front for awesome hvac tools at a affordable price delivered right to your home every tool in my hvac tool of th.

This is used so that cold air is not blown into a house waiting for the gas flames to heat up enough before the blower turns on. Fan limit switches are used on all types of building heating furnaces. This control also provides a safety limit that turns off the burner or furnace if temperatures at the furnace are too high. Based on where the manual selection switch is set when it reaches the manual setting contacts inside the switch close.

Then the furnace blower motor turns on. You can also determine the rating from your model number 8212 the 3 digit number preceding the hyphen indicates the btu rating. Most types of residential furnaces feature an internal component known as a blower switch that is used to shut down the fan motor in the event that the appliance overheats the motor malfunctions or the furnace filter becomes clogged. This video shows how to wire a furnace blower motor to an extension cord how to reverse the rotation what informa.

How to wire a furnace or ac blower motor. The fan limit switch on a heating furnace controls when the furnace blower fan turns on and off. Your furnace s btu rating may be listed on the model number tag.