Lennox Y4022 (Part Number 140398651) is a genuine OEM control box assembly engineered specifically for use with MS7-HO-09L1A mini-split heat pumps. This component houses and protects the system’s critical electrical controls, ensuring proper communication, power distribution, and safe operation of the heat pump during both heating and cooling cycles.
Designed and manufactured to strict Lennox specifications, this control box assembly provides an exact fit and dependable performance when replacing a damaged or malfunctioning unit. Using an OEM replacement helps maintain system reliability, prevents electrical issues, and supports long-term operation of the mini-split system.
This control box assembly is ideal for professional HVAC service, maintenance, and repair applications where accuracy and durability matter. It is intended as a direct replacement for the original factory-installed component and integrates seamlessly with compatible Lennox mini-split heat pump models.
Compatible with Lennox MS7-HO-09L1A mini-split heat pumps. Always confirm model compatibility before installation.
Key Specifications:
OEM Part Number: 140398651
Service Part Reference: Lennox Y4022
Product Type: Control Box Assembly
Application: Mini-Split Heat Pump MS7-HO-09L1A
Function: Houses electrical controls, relays, and terminals for system operation
Compatibility: Designed for specified Lennox mini-split heat pump models
Manufacturer: Lennox
Construction: Factory-engineered for durability and reliable electrical performance
Mounting: Direct replacement – matches factory mounting points
Electrical Interface: OEM terminal configuration (no modification required)
Always confirm model compatibility before installation. Use this genuine Lennox control box assembly to ensure proper system control, improved performance, and long service life.
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