OEM Payne Low Pressure Switch HK02ZB028 for Model PA10EA060000ALAA

This OEM low pressure switch (part number HK02ZB028) is the factory-specified replacement for the Payne PA10EA060000ALAA packaged air conditioner/heating system. The pressure switch is a critical safety component that monitors the negative pressure created by the inducer draft motor before allowing ignition to proceed. When it fails or sticks open, the control board cannot confirm safe venting conditions and the system will lock out — leaving you with no heat and often a blinking fault code indicating a pressure switch error.

• Specs: Low pressure switch | OEM part number HK02ZB028 | Factory-rated water column (W.C.) pressure set point | Normally open single-port design | Direct factory replacement for Payne PA10EA060000ALAA
• OEM vs Generic: OEM pressure switches are calibrated to the exact W.C. rating required by your specific unit. Aftermarket substitutes often carry wider tolerances, which can cause nuisance lockouts or, more dangerously, allow ignition under unsafe flue conditions.
• Install Difficulty: 3/5 — Requires disconnecting the rubber hose from the inducer housing and swapping the wiring harness connector. Tools needed: flathead screwdriver, needle-nose pliers, and a manometer to verify hose integrity before reassembly. Always disconnect power at the breaker before servicing.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Payne PA10EA060000ALAA packaged unit. Always verify your existing pressure switch W.C. rating on the component label before ordering to ensure an exact match. If you need help confirming fitment, our HVAC parts specialists are available to verify compatibility before you order — ships today!