Heil Quaker ICP 1177033 Limit Switch

As an experienced HVAC technician, you know that a tripped rollout limit switch is more than just a nuisance—it is a critical safety intervention. The Heil Quaker ICP 1177033 Limit Switch is a factory authorized OEM component designed specifically for International Comfort Products (ICP) units, including Heil, Tempstar, Comfortmaker, and Arcoaire. Rated as an L350 manual reset switch, this disc-style sensor is calibrated to open the circuit exactly at 350°F, cutting power to the gas valve if flame rollout or extreme heat is detected near the burner assembly.

This ICP 1177033 replacement features a normally closed (NC) SPST circuit and a dedicated manual reset button, ensuring the system remains offline until a technician can inspect the heat exchanger and venting for blockages. Weighing only 0.02 lbs with compact dimensions (approx. 1.2" x 0.85"), it provides an exact fit for furnace safety circuits in popular models like the G80CTL, G96CTN, and F8MTL series. Using this genuine ICP furnace part maintains the factory-engineered safety parameters of the heating system without the compatibility risks associated with universal aftermarket alternatives.

Key Benefits:

• OEM Precision: Guaranteed L350 temperature rating (350°F) for accurate thermal protection.
• Direct Compatibility: Fits a wide range of International Comfort Products including Heil, Quaker, and KeepRite.
• Safety First: The manual reset mechanism prevents the furnace from cycling automatically after a rollout event.
• High-Grade Construction: Built to withstand the high-ambient conditions of the burner vestibule.
• Simplified Installation: Standard disc limit switch mounting for fast field replacement.

Common Questions:

What causes an L350 rollout switch to trip?
A trip usually indicates that flames are "rolling out" of the combustion chamber, often due to a cracked heat exchanger, soot buildup, or a restricted flue. Always inspect the heat exchanger before resetting.

Can I replace an 1177033 with an auto-reset switch?
No. Rollout limit switches must be manual reset for safety. An auto-reset switch would allow the furnace to keep running in a dangerous condition, posing a fire hazard.

Is this part compatible with Carrier or Bryant furnaces?
Yes, since ICP is a Carrier brand, the 1177033 often replaces part number HH18HA495 in many Carrier-made gas furnaces.

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.