Control; fan failure limit, open 150 f, close 130 f
Grid is 1 inch square
Trane Limit Switch CNT00532
Manufacturer Part

Trane Limit Switch CNT00532

Genuine OEM Part # CNT00532RC Item # 2473779
Manufacturer Part
Control; fan failure limit, open 150 f, close 130 f
Grid is 1 inch square
Trane Limit Switch CNT00532
$105.15
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Control; fan failure limit, open 150 f, close 130 f
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$105.15
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This part CNT00532 is compatible with:

Product Type:
Central Air Conditioner, Furnace
Brands:
Trane

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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:

Very Likely

Furnace starts then stops

Likely

Air handler not heating

Likely

Heat pump not heating

Possible

Air handler blower runs all the time

Possible

Furnace is frequently cycling/short cycling

Possible

Air handler is frequently cycling/short cycling

Possible

Furnace not heating

About the Limit Switch

The flame rollout limit switch monitors the heat surrounding the burners. If the inducer fan motor cannot draw enough air through the burners, or if the furnace is not venting properly, the rollout limit switch will open to halt the ignition sequence and prevent the furnace from heating. When this happens, the furnace will shut off after running for a few minutes. To determine if the flame rollout limit switch is defective, use a multimeter to test it for continuity. If the switch does not have continuity, replace it. Be aware that poor airflow through the burner is often a result of insufficient ventilation or a restricted exhaust vent. Make sure that your furnace is in a properly ventilated location and the exhaust vent is clear of obstructions.

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