Carrier HH22HA191 190°F Automatic Reset SPST Rollout Switch

Description

Carrier HH22HA191 — 190°F Automatic Reset SPST Rollout Switch

The Carrier HH22HA191 is a factory-specified rollout switch engineered to protect your furnace from hazardous flame rollout conditions. When burner flames extend beyond their normal combustion zone, this switch detects the elevated temperature and immediately interrupts the circuit, shutting down the heating system before damage or danger can occur. Once temperatures return to a safe level, the automatic reset function restores normal operation without requiring manual intervention.

Key Features

• Trip temperature: 190°F — activates at the precise threshold to guard against flame rollout
• Automatic reset — restores operation once safe temperatures are reached, minimizing downtime
• SPST (Single Pole, Single Throw) configuration for straightforward wiring integration
• OEM Carrier replacement part — ensures proper fit and function in compatible Carrier furnace models
• Reliable thermal protection helps prevent heat exchanger damage and potential fire hazards

What Is a Rollout Switch?

A rollout switch is a critical safety device mounted near the burner assembly of a gas furnace. It monitors ambient temperatures around the burner area and trips the circuit if flames roll out beyond the combustion chamber — a condition that can be caused by a cracked heat exchanger, blocked flue, or restricted airflow. The HH22HA191 provides an essential layer of protection for both the equipment and the occupants of the building.

Application

• Direct OEM replacement for compatible Carrier furnace models
• Suitable for residential and light commercial gas furnace applications
• Designed for installation by qualified HVAC technicians

Specifications

• Brand: Carrier
• Part Number: HH22HA191
• Trip Temperature: 190°F
• Reset Type: Automatic
• Switch Type: SPST (Single Pole, Single Throw)
• Function: Rollout Switch / Flame Rollout Safety