OEM Carrier Pressure Switch 22#CLS 7#OPN 50" Leads for Model PH10JA024000AGAA

This is the genuine OEM Carrier pressure switch (part number HK02ZB038), the factory-specified replacement for the Carrier PH10JA024000AGAA. The pressure switch monitors the negative pressure (draft) created by the inducer motor to confirm safe venting conditions before allowing ignition to proceed. When this switch fails or sticks open, the control board cannot verify inducer operation and will lock out the system — preventing gas valve activation and leaving you with no heat. Common symptoms include the inducer running continuously but the burners never lighting, or a fault code indicating a pressure switch failure.

• Specs: Closing setpoint: 22" W.C. | Opening setpoint: 7" W.C. | Lead length: 50" | Factory-matched OEM tolerance for reliable draft sensing
• OEM vs Generic: This is the genuine Carrier OEM part — factory-calibrated to exact W.C. setpoints. Aftermarket pressure switches often carry looser tolerances, leading to nuisance trips or, worse, unsafe operation if the switch closes prematurely.
• Install Difficulty: 2/5 — Shut off power and gas before servicing. Disconnect the two electrical terminals and the rubber hose port. Tools needed: flathead screwdriver, needle-nose pliers. Always inspect the hose and port for blockages or cracks before installing the new switch.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PH10JA024000AGAA. Verify your unit's existing pressure switch W.C. rating on its data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and we'll have this part on its way to you today.