OEM Carrier High & Low Pressure Switch Kit for Model PH13NB01900GAAAA

This factory-matched OEM pressure switch kit contains both the high pressure switch (312926-252, 670/470 PSI) and the low pressure switch (312926-258) specified for the Carrier PH13NB01900GAAAA heat pump. These switches are critical refrigerant-circuit safety controls: the high-side switch cuts the compressor when discharge pressure exceeds safe limits, while the low-side switch shuts down operation if suction pressure drops too low — both preventing catastrophic compressor failure. Common failure symptoms include nuisance high-pressure lockouts, compressor short-cycling, error codes for low refrigerant pressure, or a system that runs briefly then trips off.

• Specs — High Pressure Switch (312926-252): 670 PSI cut-out / 470 PSI cut-in | Normally closed (N/C) | Factory-calibrated | Meets EN12263 & EN60730-2-6 standards
• OEM vs Generic: OEM Carrier pressure switches are factory-calibrated to exact cut-in/cut-out thresholds. Generic alternatives often carry wide pressure tolerances that can allow unsafe operating conditions or trigger false trips, shortening compressor life.
• Install Difficulty: 3/5 — Refrigerant recovery is required before replacing pressure switches on a sealed system. Tools needed: manifold gauge set, refrigerant recovery machine, torque wrench, and multimeter. EPA Section 608 certification required. Always verify system pressure after reinstallation.
• Warranty: 1-year OEM manufacturer warranty. Orders ship same business day from our warehouse when placed before 5 PM EST.

Compatibility: Designed as the direct OEM replacement for Carrier model PH13NB01900GAAAA heat pumps. Includes both high-side (312926-252) and low-side (312926-258) switches. Confirm refrigerant type and system tonnage against your unit's data plate before ordering. Have questions about fit? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online fast.