Carrier HH18HA587 Rollout Switch

Description

The Carrier HH18HA587 is an OEM rollout switch designed to protect Carrier furnaces from the hazards of burner flame rollout. When abnormal combustion causes flames to extend beyond the burner compartment, this safety switch detects the elevated temperature and immediately interrupts the burner circuit — shutting down the heating system before damage or danger can occur.

How It Works

A rollout switch is a critical safety device mounted near the burner assembly of a gas furnace. Under normal operation, combustion is contained within the heat exchanger. If a blockage, cracked heat exchanger, or restricted flue causes flames to roll out of the burner area, the switch’s thermal element responds to the excess heat and opens the circuit, cutting power to the gas valve and preventing further operation until the fault is addressed and the switch is manually reset or replaced.

Key Features

• OEM Carrier replacement part — engineered for precise fit and performance
• Protects against burner flame rollout conditions
• Interrupts burner circuit upon detection of abnormal heat
• Designed for use in compatible Carrier gas furnace models
• Helps maintain safe furnace operation and protects heat exchanger components
• Direct replacement for simplified installation

Application

The HH18HA587 is intended as a direct OEM replacement rollout switch for compatible Carrier gas furnaces. Always verify compatibility with your specific furnace model number before installation. Replacement of a rollout switch should be performed by a qualified HVAC technician, and the root cause of any rollout condition must be diagnosed and corrected prior to returning the system to service.