Carrier KHALS0401LLS Solenoid Valve Kit

The Carrier KHALS0401LLS is a high-performance liquid line solenoid valve kit engineered specifically for bi-flow applications in R-410A Puron and R-22 heat pump systems. For veteran technicians, this kit is the standard solution for preventing refrigerant migration during the off-cycle, which is critical in residential split systems where the indoor unit is located significantly above or below the outdoor section. Operating on a 24V/120V 50/60Hz control circuit, this assembly features a robust brass construction and 3/8-inch connections, ensuring a reliable seal and precise flow regulation in long-line applications exceeding 50 feet.

Installation requires the valve to be mounted with the coil positioned above the body, typically within 2 feet of the outdoor unit for heat pump heating mode protection. This OEM Carrier part is built to withstand the high-pressure demands of modern HVACR systems, providing a direct-fit replacement for numerous models, including the 38YCG and 186CNV series. By maintaining a column of liquid refrigerant ready for the next compressor cycle, the KHALS0401LLS optimizes system responsiveness and long-term compressor reliability.

• System Protection: Effectively stops liquid refrigerant migration to prevent flooded starts and compressor slugging.
• Bi-Flow Capability: Designed for heat pump applications to handle refrigerant flow in both heating and cooling modes.
• Long-Line Compliance: Meets manufacturer requirements for residential installations with extended refrigerant piping.
• Heavy-Duty Build: Brass valve body provides superior durability against corrosion and thermal stress during brazing.
• Universal Voltage: Compatible with common 24V control circuits found in residential Carrier and Bryant equipment.

Where should the KHALS0401LLS be installed on a heat pump?
For heating applications, the solenoid valve must be installed in the liquid line within 2 feet of the outdoor unit. Ensure the flow arrow on the brass body points toward the outdoor unit to ensure proper shut-off during the off-cycle.

Is this kit compatible with R-410A and R-22 systems?
Yes, the Carrier KHALS0401LLS is rated for use with both R-22 and Puron R-410A refrigerants, and it has also been verified for compatibility with newer A2L refrigerants like R-454B in specific equipment configurations.

What wiring is required for this solenoid valve?
The solenoid coil should be wired into the 24V control circuit. For single-stage units, it is typically wired between the Y and C terminals so the valve is energized simultaneously with the contactor.

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.