Sanhua International COIL-SHF-FA4 Coil

For service calls involving failed heat pump operation or improper refrigerant cycling, the Sanhua COIL-SHF-FA4 is the professional-grade solution for restoring 4-way reversing valve functionality. This 24V AC solenoid coil is engineered specifically for SHF series valves, providing the electromagnetic force necessary to actuate the pilot valve and shift the internal slide. Featuring a robust spade terminal connection and an included wire harness, this coil ensures a secure electrical interface and simplified field replacement for technicians. Designed for modern HVACR standards, the COIL-SHF-FA4 is A2L refrigerant certified, ensuring full compatibility with the latest low-GWP refrigerants like R-454B and R-32, as well as legacy HFCs like R-410A.

Technical professionals can rely on this 5W coil for precise reversing valve troubleshooting and long-term system stability. As a direct replacement for 1186721 and COILH-SHF-FA4-024, it eliminates guesswork during component matching. With an operating temperature range of -22°F to +275°F, it maintains performance in extreme environmental conditions, making it a versatile HVAC replacement part for both residential and light commercial heat pump applications.

• Universal Compatibility: Optimized for Sanhua SHF series valves found in major OEM heat pump brands.
• Future-Proof Design: A2L certified for seamless integration into systems using next-generation refrigerants.
• Rapid Installation: Spade connection and pre-wired harness reduce labor time during emergency service.
• High Thermal Limits: Built to withstand the high ambient and discharge temperatures typical of reversing valve locations.
• Precise Actuation: Provides consistent magnetic flux to prevent valve sticking or partial seating.

Is the COIL-SHF-FA4 compatible with R-410A and A2L systems?
Yes, this coil is A2L refrigerant certified and fully compatible with all common HFC and HCFC refrigerants, including R-410A, R-22, and R-32.

What should I check if the coil is energized but the valve won't shift?
First, verify that the 24V AC supply is within ±2.5 volts. If voltage is present, check for a magnetic field using a screwdriver. If no field exists, the coil may have an open circuit. If the field is strong, the issue may be a lack of the required 30-70 PSI pressure differential needed for the pilot valve to move the internal slide.

Does this coil include the necessary wiring?
Yes, the Sanhua COIL-SHF-FA4 comes equipped with a wire harness to facilitate quick connections to the defrost board or control circuit.

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.