York 2LA04704311 Control Kit

The York 2LA04704311 Control Kit is a direct replacement and updated version for the 2LA04700100, engineered specifically for Low Ambient Control applications. As a veteran technician, you know that maintaining proper head pressure is critical when ambient temperatures drop below 30°F. This OEM York kit regulates the outdoor fan motor speed based on liquid line temperature, preventing evaporator freeze-ups and ensuring a consistent pressure differential across the expansion device. By modulating airflow, the 2LA04704311 stabilizes condensing pressure and protects the compressor from liquid slugging during cold-weather operation.

Designed for seamless integration into York HVAC systems, this kit is compatible with various configurations including AC units and heat pumps using R-410A or R-22. It features a simplified wiring diagram for quick field installation, typically involving a temperature probe mount on the liquid line or condenser coil u-bend. This condenser fan speed control is essential for server rooms or commercial spaces requiring year-round cooling. When you're retrofitting older systems, this low ambient head pressure control ensures the unit operates within its envelope, maximizing HVAC system reliability in demanding climates.

• Ensures stable HVAC low-temperature operation by regulating head pressure down to 30°F.
• Prevents condenser fan short-cycling and evaporator icing in cooling mode.
• Directly replaces legacy part number 2LA04700100 with updated sensor technology.
• Protects the compressor by maintaining a sufficient pressure drop across the metering device.
• Compatible with both ball bearing and sleeve bearing motor applications for maximum field flexibility.

Is this kit compatible with R-410A systems?
Yes, the 2LA04704311 is designed to work with modern high-pressure refrigerants, provided the temperature probe is secured correctly to the liquid line to sense saturated temperature.

Does this replace the 2LA04700100?
This is the official York replacement part for the older 2LA04700100 model and matches the existing mounting footprint in most control boxes.

Can I use this for heat pumps?
This kit is intended for use in cooling mode during low outdoor temperatures. Always verify the specific wiring requirements for your model’s defrost board and contactor before installation.

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.