OEM Carrier High & Low Pressure Switch for Model CH13NA06100GBAAA

These OEM pressure switches — 312926-252 (High Pressure Switch) and 312926-258 (Low Pressure Switch) — are the factory-specified replacements for the Carrier CH13NA06100GBAAA condensing unit. Pressure switches monitor refrigerant pressures on both the high and low sides of the refrigeration circuit, sending a signal to the control board to protect the compressor from operating outside safe pressure limits. When either switch fails, the system will typically lock out on a fault code, short-cycle, or refuse to start entirely — leaving your customers with no cooling and a flashing diagnostic LED.

• Specs: 312926-252 — High-Side Pressure Switch | 312926-258 — Low-Side Pressure Switch | Factory-calibrated trip points | SPST normally-open/normally-closed configuration matched to OEM specifications | Compatible with R-410A refrigerant systems
• OEM vs Generic: OEM pressure switches are calibrated to exact factory trip-point tolerances for the CH13NA06100GBAAA. Aftermarket alternatives may use wider pressure tolerances, risking nuisance trips or — worse — allowing the compressor to run outside safe operating limits, shortening its lifespan significantly.
• Install Difficulty: 2/5 — Recover refrigerant before disconnecting any pressure-side components. Tools needed: manifold gauge set, wire terminals or crimping tool, flathead screwdriver, and a multimeter for continuity verification. Always tag and photograph wiring harness connections before removal.
• Warranty: 1-year OEM factory warranty on both 312926-252 and 312926-258. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier CH13NA06100GBAAA condensing unit. Verify the faulty switch side (high or low) using your system's diagnostic fault code before ordering — select 312926-252 for high-side faults or 312926-258 for low-side faults. Not sure which one you need? Our HVAC parts specialists can confirm fitment before you order. In stock and ready to ship today.