Temperature Activated Switch
Grid is 1 inch square
Carrier Limit Switch HH18HA160
Carrier Limit Switch HH18HA160
Manufacturer Part

Carrier Limit Switch HH18HA160

Genuine OEM Part # HH18HA160RC Item # 2379996Alternative Part Number(s)
Manufacturer Part
Temperature Activated Switch
Grid is 1 inch square
Carrier Limit Switch HH18HA160
Carrier Limit Switch HH18HA160
$36.98
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Temperature Activated Switch
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$36.98
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This part HH18HA160 is compatible with:

Product Type:
Air Handler, Packaged Unit/RTU
Brands:
Carrier

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Limit Switch Customer Reviews

Common Problems Fixed by the Limit Switch

Based on customer reports and repair data, this part commonly fixes these issues:

Likely

Air handler not heating

Possible

Air handler blower runs all the time

Possible

Air handler is frequently cycling/short cycling

About the Limit Switch

The limit switch monitors the heat surrounding the heating elements or other heat sources. To determine if the limit switch is defective, use a multimeter to test it for continuity. If the switch does not have continuity and the reset button has not tripped, the limit switch should be replaced. Be aware that poor airflow through the heater will often result in a tripped limit switch. Make sure that the furnace or air handler is in a properly ventilated location, the air filter is clean, and the air vents are clear of obstructions.

Alternative Part Number(s)

Replaces Part Number 40ES71081D1
Replaces Part Number 40ES71081D2
Replaces Part Number 40ES71081D4