Heil Quaker ICP 1171434 Sensing Relay

As a veteran tech, you know the Heil Quaker ICP 1171434 Sensing Relay is a vital OEM replacement part for maintaining precise signal authority between your control board and peripheral accessories. This Heil Quaker sensing relay (also commonly referred to as an ICP 1171434 current relay) is engineered to function as a high-sensitivity switch, enabling 24V control circuits to safely actuate 120V loads such as electronic air cleaners or humidifiers. When your system calls for heat or cooling, the ICP furnace sensing board relay detects internal current flow?typically from the blower motor?to complete the secondary circuit, ensuring peripheral components cycle only when the primary fan is operational.

Built for the rigors of residential and commercial HVACR environments, this genuine ICP part ensures compatibility across several sister brands including Arcoaire, Comfortmaker, and Tempstar. Integrating this heavy-duty HVAC sensing relay prevents the "phantom cycling" often seen with generic universal replacements. When troubleshooting, verify that yours provides a clear 24V path to the load once the primary motor is energized. This replacement sensing relay is the technician's choice for restoring factory-standard logic and preventing control board damage due to improper back-feeding or signal degradation.

• OEM Precision: Ensures 100% mechanical and electrical compatibility with ICP furnace and air handler control systems.
• Signal Isolation: Effectively separates low-voltage control signals from line-voltage peripheral loads for enhanced safety.
• Optimized Switching: High-sensitivity coil design detects low-amperage draws, critical for modern high-efficiency blower motors.
• Multi-Brand Fit: Direct replacement for Heil, KeepRite, and Arcoaire part number 1171434.

• How do I know if my sensing relay has failed? Typically, if your blower is running but your humidifier or air cleaner won't energize, or if those accessories run constantly even when the fan is off, the sensing relay contacts are likely pitted or stuck.
• Can I use this for an electronic air cleaner (EAC)? Yes, this relay is the standard interface for 120V EACs, using the 24V blower signal to "sense" when to provide line voltage to the cleaners.
• Will this fit other brands besides Heil? Yes, since it is an ICP-manufactured part, it is the correct specification for Tempstar, Comfortmaker, and Arcoaire units that list 1171434 in their parts manual.

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.