Lennox 75M49 Solenoid Coil

The Lennox 75M49 is a high-performance 24V solenoid coil designed specifically for reversing valve applications in residential and commercial heat pump systems. This genuine OEM replacement part (also identified as 75M4901) ensures precise shifting of the refrigerant flow between heating and cooling cycles. Engineered to operate on a 24V AC control circuit at 50/60 Hz, it provides the necessary magnetic force to actuate the internal pilot valve of the reversing assembly, maintaining system efficiency and preventing high-pressure bypass issues.

For technicians performing a Lennox heat pump repair, this coil offers a direct fit, eliminating the need for field modifications. It is compatible with a wide range of Lennox, Allied, and Armstrong units that utilize Ranco-style reversing valves. The durable metal housing is built to withstand extreme thermal cycling and moisture exposure typical of outdoor condensing units. Professionals searching for a HVAC solenoid valve actuator will find the 75M49 is the standard industry part for restoring full functionality to heating and cooling changeover systems.

• Direct OEM Compatibility: Functionally identical to part number 75M4901 for a seamless drop-in replacement.
• Optimized Electrical Rating: Designed for standard 24V AC systems, drawing 5/4 watts for consistent operation without overloading control boards.
• Robust Environmental Protection: Encapsulated coil design protects against debris and outdoor humidity.
• Simplified Maintenance: Easy-to-install configuration reduces diagnostic downtime during reversing valve troubleshooting.

Does this solenoid support both 50Hz and 60Hz power supplies?
Yes, the coil is rated for 50/60 Hz, making it versatile for various electrical standards found in Lennox equipment.

Is the wiring harness included with the 75M49 coil?
This SKU typically includes the solenoid coil itself; always verify if your existing lead wires or plug-in harness are in good condition before installation.

How can I tell if my reversing valve solenoid has failed?
Check for continuity across the coil terminals with a multimeter. If the coil is open or shorted, or if the valve fails to click when 24V is applied, a replacement is necessary.

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.