Heil Quaker ICP 1185687 Limit Switch Assembly

When you're dealing with a furnace that is short-cycling or hitting a high-limit trip, the Heil Quaker ICP 1185687 Limit Switch Assembly is the direct OEM solution you need to restore safe operation. This L210-20F limit switch is engineered for precision, featuring a cut-out temperature of 210?F and a cut-in temperature of 190?F. As a critical safety component, it monitors heat exchanger temperatures to prevent overheating, ensuring the furnace high limit protection circuit functions according to factory specifications. This ICP replacement part is a multi-brand fit, commonly found in Heil, Tempstar, Comfortmaker, and Arcoaire units. Because it is a genuine OEM furnace part, you avoid the calibration drifts often seen with universal aftermarket switches. Designed for durability in high-cycle environments, this 1185687 limit switch kit replaces older part numbers like 1185462, providing a clean drop-in installation for busy service technicians.

Key Benefits for Professionals

• Precise Thermal Control: Factory-calibrated L210-20F specs ensure the unit trips exactly at 210?F to protect the heat exchanger.
• OEM Compatibility: Guaranteed fit for ICP (International Comfort Products) brands including Heil Quaker, KeepRite, and Day & Night.
• System Reliability: Re-establishes the original safety parameters of the HVAC system, preventing premature component failure.
• Simplified Inventory: Replaces legacy part 1185462, making it a versatile main limit switch to keep on the service truck.

Common Questions

Is this switch a manual or automatic reset?
The 1185687 is an automatic reset switch, meaning it will close the circuit and allow furnace operation once the temperature drops back down to the 190?F cut-in point.

Can I use a gasket with this assembly?
Technical specifications indicate this specific limit switch assembly must be used without a gasket for proper thermal sensing and mounting flush against the plenum.

What causes this limit switch to trip repeatedly?
While the switch itself may be faulty, frequent tripping often indicates restricted airflow, such as a clogged filter, blocked return, or a failing blower motor.

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.