Carrier HK02SB022 Pressure Switch

The Carrier HK02SB022 Low Pressure Switch is a critical safety component designed for HVAC system protection, specifically engineered to monitor refrigerant levels and prevent compressor damage. As a genuine OEM technical replacement part, this switch features precise 117/054 PSI settings, ensuring the system trip occurs at 54 PSI upon falling pressure and resets at 117 PSI. Integrating this Factory Authorized Part into your commercial rooftop unit or residential split system maintains the operational integrity required for high-efficiency performance. This SPST pressure switch is built with a rugged, vibration-resistant housing to withstand the taxing environments of Carrier, Bryant, and Payne equipment. By providing a reliable signal to the control board, the HK02SB022 prevents the compressor from running in a vacuum or under low-charge conditions, effectively mitigating the risk of oil slugging and terminal failure. Its compact design and standard NPT threaded connection allow for a seamless fit during field service and emergency repairs.

• System Safeguard: Actively monitors for low-pressure conditions to prevent compressor burnout and mechanical failure.
• OEM Precision: Calibrated with 117 PSI cut-in and 54 PSI cut-out thresholds for exact system synchronization.
• Broad Compatibility: Engineered for use across a wide range of Carrier 48HCDD and 48HCFD series models.
• Durable Construction: High-grade materials resist environmental stressors and ensure consistent electrical contact.
• Direct Integration: Simplifies the HVAC troubleshooting process with plug-and-play installation capabilities.

• What are the specific pressure set-points for this switch? The HK02SB022 is factory-set with a 54 PSI trip point (cut-out) and a 117 PSI reset point (cut-in).
• Is this part compatible with other brands? While designed as a Carrier Factory Authorized Part, it is the standard replacement for many Bryant and Payne HVAC units using the same technical specifications.
• Why is my system tripping on this low-pressure switch? Common causes include a low refrigerant charge, restricted airflow across the evaporator coil, or a clogged filter drier; always verify system pressures with a manifold gauge set before replacement.

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.