Carrier HK02SB029 Pressure Switch
The Carrier HK02SB029 is a high-precision low pressure switch designed for critical monitoring in residential and commercial HVAC refrigeration circuits. As a factory-authorized OEM pressure switch, it provides an exact calibration of 44-27 PSI, ensuring the system initiates a cutout when suction pressure drops to 27 PSI and resets at 44 PSI. Constructed with a signature orange jacket for easy field identification, this 44-27# pressure switch prevents compressor slugging and evaporator freeze-ups by detecting low refrigerant charge or restricted airflow across the coil.
For technicians servicing Carrier, Bryant, and Payne equipment, the HK02SB029 offers seamless mechanical integration with standard 1/4-inch flare fittings and 24V control loops. Replacing a legacy refrigerant pressure switch with this genuine component maintains original design parameters and protects the hermetic compressor from thermal overload. Its durable encapsulated design is built to withstand extreme vibration and temperature fluctuations common in condensing units.
Key Benefits- Precise Calibration: Factory-set 44 PSI cut-in and 27 PSI cut-out points prevent nuisance trips while ensuring maximum equipment safety.
- OEM Compatibility: Specifically engineered for Carrier HK02SB029 applications, eliminating the need for field adjustments or brackets.
- System Protection: Acts as a primary safety limit against loss of charge, protecting the compressor from operating in a vacuum.
- Quick Identification: Features a high-visibility orange jacket and clear labeling to streamline diagnostic and replacement workflows.
How do I troubleshoot a suspected HK02SB029 failure?
First, verify your manifold gauge readings against the 44-27 PSI spec. If the system is above 44 PSI and the switch remains open (no continuity), it has likely fouled or suffered internal bellows failure. Always check for a 24V call at the terminals before condemning the part.
Will this switch prevent my evaporator from freezing?
Yes, by cutting out at 27 PSI, it ensures the refrigerant temperature stays above the freezing point of condensate, preventing ice buildup on the coil caused by low pressure.
Can this be used on R-22 and R-410A systems?
While this switch is commonly found in various R-22 and R-410A Carrier units, always verify the specific pressure requirements of your model's data plate. The 27 PSI cutout is standard for many low-pressure protection scenarios.
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.
Carrier HK02SB029 Pressure Switch
The Carrier HK02SB029 is a high-precision low pressure switch designed for critical monitoring in residential and commercial HVAC refrigeration circuits. As a factory-authorized OEM pressure switch, it provides an exact calibration of 44-27 PSI, ensuring the system initiates a cutout when suction pressure drops to 27 PSI and resets at 44 PSI. Constructed with a signature orange jacket for easy field identification, this 44-27# pressure switch prevents compressor slugging and evaporator freeze-ups by detecting low refrigerant charge or restricted airflow across the coil.
For technicians servicing Carrier, Bryant, and Payne equipment, the HK02SB029 offers seamless mechanical integration with standard 1/4-inch flare fittings and 24V control loops. Replacing a legacy refrigerant pressure switch with this genuine component maintains original design parameters and protects the hermetic compressor from thermal overload. Its durable encapsulated design is built to withstand extreme vibration and temperature fluctuations common in condensing units.
Key Benefits- Precise Calibration: Factory-set 44 PSI cut-in and 27 PSI cut-out points prevent nuisance trips while ensuring maximum equipment safety.
- OEM Compatibility: Specifically engineered for Carrier HK02SB029 applications, eliminating the need for field adjustments or brackets.
- System Protection: Acts as a primary safety limit against loss of charge, protecting the compressor from operating in a vacuum.
- Quick Identification: Features a high-visibility orange jacket and clear labeling to streamline diagnostic and replacement workflows.
How do I troubleshoot a suspected HK02SB029 failure?
First, verify your manifold gauge readings against the 44-27 PSI spec. If the system is above 44 PSI and the switch remains open (no continuity), it has likely fouled or suffered internal bellows failure. Always check for a 24V call at the terminals before condemning the part.
Will this switch prevent my evaporator from freezing?
Yes, by cutting out at 27 PSI, it ensures the refrigerant temperature stays above the freezing point of condensate, preventing ice buildup on the coil caused by low pressure.
Can this be used on R-22 and R-410A systems?
While this switch is commonly found in various R-22 and R-410A Carrier units, always verify the specific pressure requirements of your model's data plate. The 27 PSI cutout is standard for many low-pressure protection scenarios.
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 Carrier HK02SB029 is a high-precision low pressure switch designed for critical monitoring in residential and commercial HVAC refrigeration circuits. As a factory-authorized OEM pressure switch, it provides an exact calibration of 44-27 PSI, ensuring the system initiates a cutout when suction pressure drops to 27 PSI and resets at 44 PSI. Constructed with a signature orange jacket for easy field identification, this 44-27# pressure switch prevents compressor slugging and evaporator freeze-ups by detecting low refrigerant charge or restricted airflow across the coil.
For technicians servicing Carrier, Bryant, and Payne equipment, the HK02SB029 offers seamless mechanical integration with standard 1/4-inch flare fittings and 24V control loops. Replacing a legacy refrigerant pressure switch with this genuine component maintains original design parameters and protects the hermetic compressor from thermal overload. Its durable encapsulated design is built to withstand extreme vibration and temperature fluctuations common in condensing units.
Key Benefits- Precise Calibration: Factory-set 44 PSI cut-in and 27 PSI cut-out points prevent nuisance trips while ensuring maximum equipment safety.
- OEM Compatibility: Specifically engineered for Carrier HK02SB029 applications, eliminating the need for field adjustments or brackets.
- System Protection: Acts as a primary safety limit against loss of charge, protecting the compressor from operating in a vacuum.
- Quick Identification: Features a high-visibility orange jacket and clear labeling to streamline diagnostic and replacement workflows.
How do I troubleshoot a suspected HK02SB029 failure?
First, verify your manifold gauge readings against the 44-27 PSI spec. If the system is above 44 PSI and the switch remains open (no continuity), it has likely fouled or suffered internal bellows failure. Always check for a 24V call at the terminals before condemning the part.
Will this switch prevent my evaporator from freezing?
Yes, by cutting out at 27 PSI, it ensures the refrigerant temperature stays above the freezing point of condensate, preventing ice buildup on the coil caused by low pressure.
Can this be used on R-22 and R-410A systems?
While this switch is commonly found in various R-22 and R-410A Carrier units, always verify the specific pressure requirements of your model's data plate. The 27 PSI cutout is standard for many low-pressure protection scenarios.
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.
