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preventing common nuisance trips often found with generic aftermarket switches
providing a fail-safe against overheating by interrupting the burner circuit if thresholds exceed the factory-calibrated 160°F limit
you must verify against your specific serial number and parts list
it ensures exact calibration for residential furnaces and package units
Efficient Coil Power: Optimized for 24V control circuits
Trane CNT1662 High Limit preventing common nuisance trips oftenThe Trane CNT1662 High Limit is a critical safety component designed for precise thermal regulation within furnace and air handler heat exchangers. Built with an L250F SPST NC C High limit configuration, this switch acts as a failsafe by monitoring supply plenum temperatures and interrupting the 24V control circuit if levels exceed the 250F threshold. This immediate shutdown of the gas valve helps prevent structural damage to the primary heat
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