OEM Carrier High Pressure Switch 670/470 PSI for Model PH3ANA060000BAAA

This is the genuine OEM Carrier high pressure switch (part number 312926-252), factory-specified for the Carrier PH3ANA060000BAAA packaged heat pump unit. The high pressure switch continuously monitors refrigerant pressure on the high side of the refrigeration circuit. When system pressure exceeds the rated cutout threshold — caused by a dirty condenser coil, blocked airflow, failed condenser fan motor, or refrigerant overcharge — this switch opens the safety circuit and shuts down the compressor to prevent catastrophic damage. Common failure symptoms include the system entering lockout mode, short-cycling compressor operation, or a no-cooling fault code with no mechanical noise from the compressor.

• Specs: Cutout: 670 PSI | Reset: 470 PSI | Genuine Carrier OEM Factory Authorized Part | Part Number: 312926-252
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part engineered to exact cutout and reset tolerances. Off-brand alternatives often use imprecise pressure ratings that can allow unsafe operating pressures or nuisance trips, shortening compressor life.
• Install Difficulty: 3/5 — Refrigerant system work must be performed by an EPA Section 608 certified technician. Tools required: manifold gauge set, refrigerant recovery equipment, adjustable wrench, and electrical multimeter. Always recover refrigerant before accessing the high-side port and verify system pressure after reinstallation.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered by 5 PM local time.

Compatibility: Engineered for the Carrier PH3ANA060000BAAA packaged heat pump system. Always verify the part number against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions. In stock and ready to ship today.