Carrier HK02ZB038 Pressure Switch

The Carrier HK02ZB038 Pressure Switch is a high-precision OEM component designed for critical pressure monitoring in Carrier, Bryant, and Payne HVAC residential and light commercial systems. This SPST (Single Pole Single Throw) switch functions as a safety and operational control, precisely calibrated with a 7 PSI open and 22 PSI close setpoint. Engineered to detect essential pressure fluctuations, the HK02ZB038 ensures that your system operates within safe mechanical parameters, protecting the compressor and inducer motor from damage due to restricted airflow or refrigerant issues.

For ease of installation in tight control cabinets, this low pressure switch features 50-inch wire leads (18 AWG) and a built-in deflator, providing maximum flexibility for wiring to the control board or terminal strip. Whether you are performing a routine service or a complex system repair, utilizing an OEM Carrier pressure switch ensures exact electrical ratings and mechanical fitment across a wide range of furnace and heat pump models. Its rugged construction is designed to withstand the vibration and thermal cycling common in modern high-efficiency HVAC equipment.

• Precise Calibration: Factory-set at 7# Open and 22# Close to maintain rigorous system safety standards.
• Extended Reach: Includes 50" wire leads for versatile routing and simplified connection to the HVAC control interface.
• OEM Reliability: Designed specifically for Carrier, Bryant, and Payne units to eliminate compatibility issues found with universal alternatives.
• Enhanced Protection: Acts as a critical sensor to prevent system operation under unsafe pressure conditions, extending the lifespan of the inducer and main fan.
• Durable Construction: Built with high-grade materials to resist the environmental stresses of industrial and residential furnace operation.

Is the HK02ZB038 a direct replacement for my older Carrier pressure sensor?
Yes, the HK02ZB038 replaces several older part numbers, including the PS80-02-F0074. Always verify the specific PSI trip points on your existing switch to ensure a thermal and mechanical match for your specific equipment.

What does the 7# Open and 22# Close setting mean for my system?
The switch is designed to break the electrical circuit (open) when pressure drops below 7 PSI and reconnect it (close) once the pressure rises back to 22 PSI, effectively regulating the sequence of operations.

Why are the 50-inch leads necessary?
The extended 50-inch leads provide technicians with ample length to reach circuit boards in various furnace configurations without the need for additional wire splicing or extensions.

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.