OEM Carrier High Pressure Switch 670/470 PSI for Model PH3ANA024000BAAA

This is the genuine OEM Carrier high pressure switch (part number 312926-252), factory-specified for the Carrier PH3ANA024000BAAA packaged heat pump system. The high pressure switch is a critical safety control that continuously monitors refrigerant discharge pressure. When system pressure rises beyond the safe threshold, the switch opens the control circuit, shutting down the compressor to prevent catastrophic damage to the system. Common failure symptoms include nuisance high-pressure lockouts, compressor short-cycling, or a system that trips off on a warm day and won't restart without a manual reset.

• Specs: Cutout: 670 PSI | Cut-in: 470 PSI | Genuine OEM part number 312926-252 | Direct factory replacement — no modifications required
• OEM vs Generic: OEM pressure switches are calibrated to exact factory tolerances, ensuring the compressor is protected at precisely the right threshold. Generic aftermarket switches often carry wider pressure tolerances that can allow unsafe operating pressures, shortening compressor life or failing to protect the system.
• Install difficulty: 3/5 — Refrigerant system work must be performed by an EPA 608-certified technician. Tools required: manifold gauge set, adjustable wrench, multimeter. Always recover refrigerant before replacing the switch, and leak-check the port after installation.
• Warranty: 1-year OEM manufacturer's warranty included. Ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Engineered as a direct OEM replacement for the Carrier PH3ANA024000BAAA packaged heat pump. Verify the 670/470 PSI rating against your unit's data plate and existing switch before ordering. Cross-references: 312926252. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions.