Carrier Fan Limit Switch Location

The main example is the link between the air handler blower and the thermostat.

Carrier fan limit switch location.

A fan limit switch is a component of a furnace system that determines when the furnace blower assembly for hot air turns on and off. Hh12zb180 carrier oem furnace 3 limit switch l180 40 by oem replm for carrier. 5 0 out of 5 stars 5. The fan limit switch senses the temperature increase in the furnace.

Look for a small round component with a raised red button at its center. It will be located at the top of the panel. If you can wait a few days i would suggest buying from amazon or ebay as they have a big selection t choose from. The fan limit switch also has two other functions.

Only 10 left in stock order soon. Just as it determines when the blower assembly should. When the thermostat reaches the preset indoor temperature an ac limit switch is flipped. Locate the white limit switch.

This video shows you how to diagnose and repair many models of carrier and bryant furnaces with the error limit or flame roll out frs switch open. Depending on your furnace model the switch will be surrounded by a silver or white cover. Ac limit switches are quite common. How do limit switches work in air conditioning systems.

It is usually located behind the inducer fan motor area to test it you can turn off power to furnace remove the wires from either side of the limit switch and connect the two wires you removed together. Hh18hz195 carrier oem furnace limit switch l195 80 by oem replm for carrier. If the two wires are too short to connect you use a jumper wire like a paper clip to join the terminals. This stops the air conditioning system from creating any more cold air.

Fan limit switches can be bought at an hvac supply stores or online. Examine the furnace to locate the upper limit switch. The fan limit control includes a sensor not visible in the photographs that projects into the supply air plenum on gas furnaces this is typically an area above the furnace heat exchanger. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms.

Some hvac supply stores do not sell to the public because of the high returns while others will but at elevated prices.