OEM Carrier Low Pressure Switch 55-23# (312926-258) for Model PH14PB06000GBAAB

This is the genuine OEM factory-replacement low pressure switch for the Carrier PH14PB06000GBAAB heat pump. The low pressure switch continuously monitors refrigerant circuit pressure on the suction side of the system. When pressure drops below the factory cut-in threshold — typically due to low refrigerant charge, a blocked filter drier, or a faulty metering device — the switch opens the control circuit to protect the compressor from running under damaging low-pressure conditions. Common failure symptoms include the system not starting, short-cycling, or tripping into a lockout fault code with no apparent cause.

• Specs: 55-23# pressure rating (cuts out at 23 PSI, resets at 55 PSI) | Brass inlet connector | Precision-calibrated diaphragm | Factory Authorized Parts (FAP) designation | OEM part number 312926-258
• OEM vs Generic: This genuine Carrier FAP switch is calibrated to exact factory pressure thresholds. Off-brand switches often carry wider tolerances that can allow the compressor to run under unsafe low-pressure conditions, risking catastrophic failure.
• Install Difficulty: 2/5 — IMPORTANT: Recover all refrigerant before disconnecting the switch. Tools needed: manifold gauge set, refrigerant recovery unit, adjustable wrench, multimeter. Re-check system pressures and leak-test after installation. Best performed by an EPA 608-certified technician.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model PH14PB06000GBAAB. Always confirm the part number on the original switch label before ordering, as pressure switch ratings vary by refrigerant type and system tonnage. Not sure it fits? Contact our team — we verify fitment before you order. Order by 3 PM and your part ships today.