Furnace Blower Motor Switch

You can also determine the rating from your model number 8212 the 3 digit number preceding the hyphen indicates the btu rating.

Furnace blower motor switch.

When the furnace heat exchanger heats up the bimetal twists causing the round dial shown in the picture to turn. 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. Royalton 88000 max btu input natural gas 95 percentage upflow horizontal 1 stage forced air furnace. Based on where the manual selection switch is set when it reaches the manual setting contacts inside the switch close.

Fan limit switches are used on all types of building heating furnaces. To restore the furnace to normal operation you must reset the switch on the blower motor. Then the furnace blower motor turns on. 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.

The fan limit switch on a heating furnace controls when the furnace blower fan turns on and off. This control also provides a safety limit that turns off the burner or furnace if temperatures at the furnace are too high. We smelled a burnt plastic smell in the house and my wife mentioned that the. This video shows how to wire a furnace blower motor to an extension cord how to reverse the rotation what informa.

Furnace ac blower motor replacement or how to replace your furnace blower motor. Your furnace s btu rating may be listed on the model number tag. How to wire a furnace or ac blower motor.