YORK/ETC LIMIT SWITCH L170 MANUALRESET Fan Disc, High Limit Control Switches
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Pickup available at 75 Blue Mountain St #3
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The York L170 Manual Reset High Limit Switch is an essential safety component designed for residential and commercial forced-air furnaces and HVAC systems. This high-limit control acts as a critical safeguard by monitoring the temperature within the heat exchanger. If the system exceeds a safe operating temperature of 170°F—often caused by restricted airflow, a dirty filter, or a failing blower motor—the switch automatically breaks the electrical circuit to shut down the heating elements or burners. As a manual reset thermal disc, it ensures that the system cannot restart until a technician or user has inspected the unit and physically reset the switch, preventing repetitive overheating and potential equipment damage. Durable and reliable, this fan disc style switch is a standard replacement part for maintaining the safety and efficiency of your heating equipment.
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1-778-759-9864Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com
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