Carrier HH19ZH210 210°F Auto Reset CO Limit Switch

Description

Carrier HH19ZH210 210°F Auto Reset CO Limit Switch

The Carrier HH19ZH210 is an OEM auto-reset limit switch designed to protect furnaces and heating systems from dangerous overheating conditions. Rated at 210°F, this limit switch automatically interrupts the burner circuit when supply air temperatures exceed the set point, then resets itself once temperatures return to a safe operating range — providing reliable, hands-free protection without requiring manual intervention.

Key Features

• Auto-reset operation — automatically restores normal function once safe temperatures are reached
• 210°F temperature rating for precise high-limit protection
• OEM Carrier replacement part — engineered for direct fit and reliable performance
• Designed for use in Carrier furnaces and compatible heating systems
• Interrupts burner operation to prevent heat exchanger damage and potential safety hazards
• Durable construction for long-term reliability in demanding HVAC environments

Product Specifications

• Brand: Carrier
• Part Number: HH19ZH210
• Switch Type: Auto Reset Limit Switch
• Temperature Rating: 210°F
• Application: Furnace / Heating System Overheat Protection

Application

The HH19ZH210 limit switch is a critical safety component in Carrier furnace systems. It monitors air temperature within the heat exchanger plenum and shuts down the burner if temperatures rise beyond the 210°F threshold, protecting the heat exchanger, blower components, and surrounding structure from heat damage. The auto-reset feature makes it ideal for systems where nuisance lockouts need to be minimized while still maintaining essential safety protection.