OEM Carrier Low Pressure Switch 55-23# (312926-258) for Model PH14EB06000GABAB

This factory OEM low pressure switch (part number 312926-258) is the manufacturer-specified replacement for the Carrier PH14EB06000GABAB heat pump. The low pressure switch continuously monitors refrigerant pressure on the low side of the system. When pressure drops below the factory-set threshold of 55 PSI cut-out / 23 PSI cut-in, the switch opens the control circuit and shuts down the compressor — protecting it from running in a low-charge or restricted-flow condition. Common symptoms of a failed low pressure switch include the compressor refusing to start, the system locking out on a low pressure fault, or the unit short-cycling and failing to maintain setpoint temperature.

• Specs: 55-23# (55 PSI cut-out / 23 PSI cut-in) | Factory OEM Sensata/PS80 series | Brass inlet connector | Precision-calibrated diaphragm | Pre-wired color-coded leads | Part No. 312926-258
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM pressure switches are calibrated to exact factory cut-in/cut-out tolerances, ensuring reliable compressor protection. Off-brand substitutes may have wider pressure tolerances, leading to nuisance lockouts or — worse — insufficient compressor protection.
• Install Difficulty: 2/5 — Always recover refrigerant and relieve system pressure before disconnecting the switch. Tools needed: manifold gauge set, adjustable wrench, needle-nose pliers, multimeter. Photograph wiring before disconnecting leads. EPA 608 certification required for refrigerant handling.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH14EB06000GABAB heat pump. Always verify the part number on your existing switch and the refrigerant type on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — reach out before placing your order.