OEM Carrier Low Pressure Switch 55-23# for Model PH14EB04800GBAAB

This is the genuine OEM Carrier low pressure switch (part number 312926-258), the factory-specified replacement for the Carrier PH14EB04800GBAAB heat pump. The low pressure switch monitors refrigerant pressure on the suction side of the system and acts as a critical safeguard: when pressure drops below the rated threshold, the switch opens the control circuit, cutting compressor operation to prevent damage from loss of refrigerant charge, restricted airflow, or a locked-out evaporator coil. Common failure symptoms include the system refusing to start, the compressor shutting down shortly after initiation, or a low-pressure fault code appearing on the thermostat or control board.

• Specs: 55-23# rated | Low-pressure normally-closed switch | Brass inlet connector | Precision-calibrated diaphragm | Pre-wired color-coded leads for fast connection
• OEM vs Generic: This OEM part is manufactured to Carrier's exact factory tolerances for cut-in and cut-out pressure, ensuring accurate refrigerant circuit protection. Aftermarket switches often carry wider tolerances that can allow the compressor to run under unsafe conditions or trigger nuisance trips.
• Install Difficulty: 3/5 — Refrigerant recovery is required before replacing this switch. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, multimeter, and safety glasses. Always recover refrigerant per EPA Section 608 regulations before disconnecting the switch.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PH14EB04800GBAAB heat pump. Verify your unit's data plate and existing switch markings against part number 312926-258 before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before every order — contact us before you buy.