Furnace Auxiliary Limit Switch

This video will help you to diagnose and replace a faulty limit control on your gas furnace.

Furnace auxiliary limit switch.

Grasp the sides of. A limit switch is a device that s located under your furnace s supply plenum. This can be cause by your blower not running. Hh18ha211 bryant oem furnace limit switch l225 50 by oem replm for bryant.

Auxiliary limit control b13701 55 helps protect against overheating by starting the blower when temperatures rise too high. Once the plenum reaches a specific temperature the limit switch sends a signal to the air handler to begin running and delivering warm air to your home. Flip the circuit breaker switch that corresponds to the goodman furnace to the off position to disrupt the electrical supply to the. You need to verify you have the correct voltage to the motor and the run capacitor is close to it s rated value.

This limit is use on the following goodman amana. Remove the furnace access panel to get to the internal components. Shut off the electrical power supply to the furnace before installing this part. The fan limit switch on a heating furnace controls when the furnace blower fan turns on and off.

Wear work gloves to protect your hands. However for your own safety don t attempt to reset the switch without first consulting your furnace s instruction manual. The b1370155 goodman amana furnace auxiliary limit switch is rated to automatically reset itself when the temperature is. Once the air reaches a preset temperature the limit switch turns on the blower.

More buying choices 8 63 12 new offers amazon s choice for limit switch for furnace. This control also provides a safety limit that turns off the burner or furnace if temperatures at the furnace are too high. The function of your furnace limit switch is to tell the fan when to turn off and on depending on the temperature in the home. This is a brand new b1370155 goodman amana furnace auxiliary limit switch which is rated to break the heating circuit.

Fan limit switches are used on all types of building heating furnaces. It reads the temperature of the plenum and waits until it gets appropriately warm. 4 5 out of 5 stars 14. The limit switch includes a sensor in the heat exchanger to determine when the air is warm enough to circulate.

This auxiliary limit control part number b13701 55 is for furnaces. How to reset the limit switch on a goodman furnace hunker.