Furnace Fan Temp Switch

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Furnace fan temp switch.

F 150 degrees f 14 10 125 25 25 voltage range 120 to 240 150 degrees f 170 degrees f brands. The probe extends through the wall of the furnace housing and the plate fastens to the outside of the furnace. Honeywell furnace 11 combo fan limit switch l4064a3046. Setting the middle arm at this temperature ensures that the fan will switch on at the correct time when the furnace warms ups.

In many models it also has a built in safety control for the burner to shut off at higher temperatures if the burner s inner control malfunctions. The fan limit control switch on a furnace regulates when the blower will come on or shut off. Provided that the fan switch is in auto position when the thermostat has been satisfied and turns off the oil or gas burner at the furnace the fan limit switch will cause the blower or fan unit to continue to operate just until the temperature at the supply plenum has reached or dropped below the fan off lower limit on the switch the blue. Set the temperature on the middle component to approximately 105 to 115 degrees fahrenheit.

The mounting plate usually contains two or more terminals that receive control wires for the blower fan and the furnace s gas valve. It works off of temperature and also provides a high temperature safety limit this is a switch actually two switches which turns the furnace blower on and off based on the temperature of the heat exchanger. Honeywell furnace temperature fan limit switch control the fan limit control turns the fan on and off in furnace applications. When the room temperature reaches the thermostat setting the furnace will turn off.

The switch is one of the easier devices and attachments on a furnace. Once the fan limit switch has sensed that the air in the plenum is a suitable temperature usually around 20 degrees above the room temperature it engages the blower fan to distribute air. A typical limit switch consists of a long temperature sensor probe attached to a mounting plate. Honeywell furnace 5 combo fan limit switch l4064b3432 us stove wood coal.

More buying choices 88 00 15 new offers 7975 3281 coleman oem furnace replacement fan switch f110. 4 5 out of 5 stars 165. A helical bi metal probe extends from the back of the. Get it as soon as thu oct 1.