OEM Carrier High & Low Pressure Switch for Model CH14NA03600GAAAA

These OEM pressure switches — 312926-252 (High Pressure Switch) and 312926-258 (Low Pressure Switch) — are the factory-specified replacements for the Carrier CH14NA03600GAAAA split-system condenser. Pressure switches monitor refrigerant pressure on both the high and low sides of the system, cutting power to the compressor if unsafe pressure levels are detected. When either switch fails, the system will lock out, short-cycle, or fail to start entirely — protecting the compressor from catastrophic damage.

• Specs: 312926-252 — High Side Pressure Switch | 312926-258 — Low Side Pressure Switch | Factory-calibrated trip points | Designed for R-410A refrigerant systems | Direct OEM replacement, no modifications required
• OEM vs Generic: OEM pressure switches are calibrated to exact factory trip-point tolerances for the CH14NA03600GAAAA. Generic alternatives may have wider tolerance ranges, risking nuisance lockouts or — more dangerously — allowing the compressor to run outside safe pressure limits, shortening its lifespan significantly.
• Install Difficulty: 3/5 — Refrigerant system work should be performed by an EPA 608-certified technician. Tools needed: manifold gauge set, multimeter, flathead screwdriver, wire stripper. Always recover refrigerant before replacing pressure switches and verify system pressures after reinstallation.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier CH14NA03600GAAAA 3-ton split-system air conditioner operating on R-410A refrigerant. Verify your existing switch part number — 312926-252 for high side or 312926-258 for low side — against your unit's wiring diagram or data plate before ordering. Both switches are listed here; add the correct one for your repair. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.