Carrier Fan Limit Switch Location

When the thermostat reaches the preset indoor temperature an ac limit switch is flipped.

Carrier fan limit switch location.

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. Essentially this means that it determines when the hot air should be blown through your ventilation system. 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.

This stops the air conditioning system from creating any more cold air. How do limit switches work in air conditioning systems. If the two wires are too short to connect you use a jumper wire like a paper clip to join the terminals. Amazon s choice for carrier furnace 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. Just as it determines when the blower assembly should. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms. Hh18hz195 carrier oem furnace limit switch l195 80 by oem replm for carrier.

The main example is the link between the air handler blower and the thermostat. This is the limit switch on our carrier furnace that i had to reset and reset until it finally stopped needing to be reset anymore and the furnace works fine. 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. 5 0 out of 5 stars 5.

Hh12zb180 carrier oem furnace 3 limit switch l180 40 by oem replm for carrier. Some hvac supply stores do not sell to the public because of the high returns while others will but at elevated prices. The fan limit switch also has two other functions. Ac limit switches are quite common.

Only 10 left in stock order soon. Depending on your furnace model the switch will be surrounded by a silver or white cover. Examine the furnace to locate the upper limit switch. Fan limit switches can be bought at an hvac supply stores or online.

It will be located at the top of the panel.