Lennox 21L14 Controller
The Lennox 21L14 Controller (catalog number 106855-01) is a critical M4/W4 CORE Unit Controller Replacement kit designed for high-performance management of Lennox commercial rooftop units and split systems. As a genuine OEM Lennox HVAC control board, it functions as the primary logic module, processing multi-sensor inputs to execute precise HVAC system sequencing, ignition timing, and blower motor coordination. This integrated furnace control is specifically engineered to interface with the Lennox CORE Service App, allowing technicians to perform advanced diagnostics, configuration ID backups, and real-time performance monitoring. Use this assembly to resolve intermittent HVAC communication errors or logic failures in Lennox M4 and W4 series equipment. Note that for A2L or R454B refrigerant applications, the 28B97 module is required. This Lennox 21L14 replacement ensures seamless integration with factory wiring harnesses, maintaining the operational integrity and efficiency of the original equipment design without the unpredictability of universal aftermarket boards.
Key Benefits:- Direct Lennox OEM replacement for all factory-installed M4/W4 unit controllers.
- Advanced microprocessor logic optimizes temperature and humidity control for commercial applications.
- Full compatibility with the Lennox CORE Service App for streamlined setup and local diagnostics.
- Includes the M4/W4 Unit Controller and a comprehensive CORE setup guide for field commissioning.
- Supports system profile backups via USB or mobile device to preserve custom site parameters.
- Which systems are compatible with the 21L14? This controller is designed specifically for Lennox M4 and W4 series CORE unit platforms, typically found in commercial rooftop and split system applications.
- How do I transfer settings from the old board? If the original unit is operational, use the CORE Service App to save the system profile to a mobile device or USB drive before installing the 21L14 replacement kit.
- Does this board support the latest low-GWP refrigerants? This module is suitable for standard applications; however, for A2L (R454B) systems, verify if the 28B97 controller is specified for your particular model.
This item is not eligible for free shipping.
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.
Lennox 21L14 Controller
The Lennox 21L14 Controller (catalog number 106855-01) is a critical M4/W4 CORE Unit Controller Replacement kit designed for high-performance management of Lennox commercial rooftop units and split systems. As a genuine OEM Lennox HVAC control board, it functions as the primary logic module, processing multi-sensor inputs to execute precise HVAC system sequencing, ignition timing, and blower motor coordination. This integrated furnace control is specifically engineered to interface with the Lennox CORE Service App, allowing technicians to perform advanced diagnostics, configuration ID backups, and real-time performance monitoring. Use this assembly to resolve intermittent HVAC communication errors or logic failures in Lennox M4 and W4 series equipment. Note that for A2L or R454B refrigerant applications, the 28B97 module is required. This Lennox 21L14 replacement ensures seamless integration with factory wiring harnesses, maintaining the operational integrity and efficiency of the original equipment design without the unpredictability of universal aftermarket boards.
Key Benefits:- Direct Lennox OEM replacement for all factory-installed M4/W4 unit controllers.
- Advanced microprocessor logic optimizes temperature and humidity control for commercial applications.
- Full compatibility with the Lennox CORE Service App for streamlined setup and local diagnostics.
- Includes the M4/W4 Unit Controller and a comprehensive CORE setup guide for field commissioning.
- Supports system profile backups via USB or mobile device to preserve custom site parameters.
- Which systems are compatible with the 21L14? This controller is designed specifically for Lennox M4 and W4 series CORE unit platforms, typically found in commercial rooftop and split system applications.
- How do I transfer settings from the old board? If the original unit is operational, use the CORE Service App to save the system profile to a mobile device or USB drive before installing the 21L14 replacement kit.
- Does this board support the latest low-GWP refrigerants? This module is suitable for standard applications; however, for A2L (R454B) systems, verify if the 28B97 controller is specified for your particular model.
This item is not eligible for free shipping.
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.
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Description
The Lennox 21L14 Controller (catalog number 106855-01) is a critical M4/W4 CORE Unit Controller Replacement kit designed for high-performance management of Lennox commercial rooftop units and split systems. As a genuine OEM Lennox HVAC control board, it functions as the primary logic module, processing multi-sensor inputs to execute precise HVAC system sequencing, ignition timing, and blower motor coordination. This integrated furnace control is specifically engineered to interface with the Lennox CORE Service App, allowing technicians to perform advanced diagnostics, configuration ID backups, and real-time performance monitoring. Use this assembly to resolve intermittent HVAC communication errors or logic failures in Lennox M4 and W4 series equipment. Note that for A2L or R454B refrigerant applications, the 28B97 module is required. This Lennox 21L14 replacement ensures seamless integration with factory wiring harnesses, maintaining the operational integrity and efficiency of the original equipment design without the unpredictability of universal aftermarket boards.
Key Benefits:- Direct Lennox OEM replacement for all factory-installed M4/W4 unit controllers.
- Advanced microprocessor logic optimizes temperature and humidity control for commercial applications.
- Full compatibility with the Lennox CORE Service App for streamlined setup and local diagnostics.
- Includes the M4/W4 Unit Controller and a comprehensive CORE setup guide for field commissioning.
- Supports system profile backups via USB or mobile device to preserve custom site parameters.
- Which systems are compatible with the 21L14? This controller is designed specifically for Lennox M4 and W4 series CORE unit platforms, typically found in commercial rooftop and split system applications.
- How do I transfer settings from the old board? If the original unit is operational, use the CORE Service App to save the system profile to a mobile device or USB drive before installing the 21L14 replacement kit.
- Does this board support the latest low-GWP refrigerants? This module is suitable for standard applications; however, for A2L (R454B) systems, verify if the 28B97 controller is specified for your particular model.
This item is not eligible for free shipping.
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.
