Carrier HH18HC196 Rollout Switch

The Carrier HH18HC196 Rollout Switch is a critical safety component engineered for high-heat monitoring in residential and commercial gas-fired furnaces. This single pole single throw (SPST) switch is designed to detect flame rollout—a dangerous condition where combustion occurs outside the heat exchanger—protecting the burner enclosure and surrounding components from thermal damage. Calibrated to a 195-degree Fahrenheit trip point, this manual reset rollout switch ensures that once a fault is detected, the system remains locked out until a qualified technician can inspect the heat exchanger, venting, or inducer for underlying failures.

As a genuine OEM replacement part, the HH18HC196 is built to the exact specifications required by Carrier, Bryant, and Payne equipment, maintaining the original safety listing of the appliance. Its compact 195F SPST configuration allows for straightforward integration into existing safety loops. Relying on precision-calibrated bimetal discs, this furnace flame rollout switch provides reliable circuit interruption the moment ambient temperatures at the burner box exceed safe limits.

• Precision Thermal Protection: Set to open at 195°F to prevent cabinet melting and fire hazards.
• Manual Reset Mechanism: Ensures the system is physically inspected before resuming operation after a high-limit event.
• OEM Compatibility: Specifically designed for Carrier, Bryant, and Payne furnace models to ensure proper fit and electrical interface.
• Durable SPST Contacts: High-quality single-pole, single-throw design for consistent electrical continuity and breaking.

Common Questions

What causes this rollout switch to trip?
A trip is typically caused by a cracked heat exchanger, a blocked flue vent, or a failing inducer motor that prevents proper drafting of combustion gases.

Can I bypass the HH18HC196 for testing?
Bypassing a safety limit is never recommended. If the switch is open, it indicates a potentially hazardous condition that must be diagnosed by an HVAC professional.

Is this switch compatible with other temperature ratings?
No. Rollout switches must be replaced with the exact temperature rating specified by the manufacturer (195°F in this case) to maintain the system's safety profile.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.