Reznor High Temperature Limit Switch Auto Reset

The Reznor high temperature limit switch with auto reset is a replacement safety control for Reznor unit heaters and other Reznor heating equipment. It is also called a high limit switch, limit control or high-limit thermostat. It monitors the temperature of the air passing over the heat exchanger or heating elements. If the equipment overheats, the switch shuts the heater off.

Key Features:

• Auto reset operation: the switch resets by itself once temperatures return to a safe level, so you don't have to reset it by hand.
• Overtemperature protection: it helps protect heat exchangers, heating elements and internal components from damage caused by overheating.
• OEM-style replacement: it is a replacement control for Reznor equipment.
• Multiple temperature settings: the product line includes limit switches with different temperature ratings. Select the one that matches your heater.

A failed or worn limit switch can cause no heat, too little heat, or a heater that runs too long or won't shut down on overheat. Replacing it restores reliable safety shutoff and normal heater operation. If a limit switch cycles repeatedly, check the heater for the underlying cause of the overheating.