Carrier HK05SZ003 Pressure Transducer

The Carrier HK05SZ003 Pressure Transducer is a critical diagnostic and control component designed for precise suction side monitoring in high-performance HVAC systems. Built to withstand the rigorous environments of commercial chillers and packaged rooftop units, this suction pressure transducer features a durable stainless steel housing and a yellow-coded body for immediate identification in the field. Engineered with advanced piezoresistive sensing technology, the Carrier OEM pressure sensor provides real-time pressure feedback to the system controller, ensuring optimal compressor protection and refrigerant flow management. With an operating range of -6.7 psig up to 420 psig, it is a versatile choice for multi-refrigerant circuits, including R-410A applications. This HVAC pressure transducer utilizes a standard 3-wire electrical connection—typically Red (5VDC supply), Black (Ground), and Green (Signal Output)—to deliver a linear voltage signal that allows for precise inducer speed control and system troubleshooting. When replacing a failed HK05SZ003, technicians can rely on this factory-authorized part to restore factory-spec calibration and prevent 23.3 error codes or two-red-blink diagnostic flashes on compatible Carrier, Bryant, and Payne equipment.

• Enhanced System Accuracy: Piezoresistive technology provides high-resolution data for tighter control of suction superheat and evaporator efficiency.
• Rugged Environmental Resistance: The stainless steel construction and wide media temperature rating (-40°F to 245°F) ensure reliability in extreme climate conditions.
• Direct OEM Integration: Designed as a drop-in replacement for the Carrier HK05SZ003, eliminating the need for mounting bracket modifications or electrical terminal re-pinning.
• Preventative Compressor Protection: Accurately detects low-pressure stalls or high-pressure surges to trigger safety shutdowns before mechanical failure occurs.

• How do I test the HK05SZ003 with a multimeter? Set your meter to VDC. Verify 5VDC between the red and black wires. Then, measure the voltage between the green (signal) and black (ground) wires; with no pressure (atmospheric), the output should approximately range from 0.43 to 0.58 VDC.
• What does a code 23.3 indicate on a Carrier control board? This fault typically signals that the pressure transducer feedback voltage is out of the expected range (often exceeding 0.65 VDC at standby), indicating the sensor is out of calibration or has failed.
• Is the HK05SZ003 compatible with all refrigerants? This transducer is rated for suction side pressures up to 420 psig, making it suitable for standard HVAC refrigerants like R-22 and R-410A, provided the system range requirements align with the –46 to 2,896 kPa specification.

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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.