Heil Quaker ICP 1186721 Valve Coil

The Heil Quaker ICP 1186721 Valve Coil is a critical 24V reversing valve solenoid designed for heat pump applications requiring precise refrigerant flow reversal. Built to withstand the high-temperature demands of continuous duty, this direct replacement coil ensures the pilot valve triggers the slide assembly accurately for seamless heating and cooling transitions. As a technician-grade component, the 1186721 solves common reversing valve stuck issues caused by weak magnetic fields or electrical failure in the original coil. This specific model is the engineered successor to legacy part numbers 1171826 and 1172574, offering improved thermal resistance and electrical stability. It is compatible with a wide range of ICP heat pump models, including those under the Heil, Tempstar, and Comfortmaker brands. When performing a 24V coil replacement, verify the voltage at the leads to ensure the control board is sending the appropriate signal before replacing the solenoid to confirm the fault lies with the coil winding.

• OEM Compatibility: Engineered specifically for ICP equipment to ensure proper fitment on the slide valve stem.
• Drop-in Replacement: Directly replaces obsolete part numbers 1171826 and 1172574 without modification.
• Heavy-Duty Insulation: Class-rated windings are designed to handle the high ambient heat found within the condensing unit.
• Efficient Response: Provides the necessary magnetic force to shift the internal pilot valve even under high pressure differentials.

How do I test if the 1186721 coil is defective?
Using a multimeter, check for 24VAC at the coil leads during a call for reversing valve activation. if voltage is present but the valve does not shift, check the resistance (ohms) of the coil; an open circuit or a reading of zero indicates a failed winding.

Will this coil fix a reversing valve that is bypassng?
If the slide is physically stuck or leaking internally (bypassing), replacing the coil will not fix the issue. This part is intended for electrical failures where the solenoid fails to create a magnetic field.

Is this compatible with R-410A systems?
Yes, this coil is rated for use in systems utilizing modern refrigerants, provided the reversing valve body is the correct match for the 1186721 diameter.

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.