OEM Carrier High & Low Pressure Switch for Model CH13NA04800GAABA

This OEM pressure switch kit includes both the high pressure switch (312926-252) and low pressure switch (312926-258) factory-specified for the Carrier CH13NA04800GAABA condenser unit. Pressure switches monitor refrigerant circuit pressures to protect the compressor from operating outside safe parameters. When either switch fails or trips, the system will lock out — the unit may attempt to start and then immediately shut down, or refuse to start altogether. Fault codes related to high or low pressure lockout are the most common symptom.

• Specs: High Pressure Switch — OEM Part 312926-252 | Low Pressure Switch — OEM Part 312926-258 | Factory-calibrated trip/reset points | Rated for R-410A refrigerant systems
• OEM vs Generic: OEM pressure switches are calibrated to exact factory trip and reset pressure thresholds. Generic replacements often use broader tolerances, risking nuisance trips or, worse, failure to protect the compressor under fault conditions — shortening the life of your most expensive component.
• Install Difficulty: 3/5 — System must be recovered of refrigerant before replacing pressure switches on the refrigerant circuit. Tools needed: manifold gauge set, refrigerant recovery equipment, adjustable wrench, multimeter. Always follow EPA 608 regulations when handling refrigerants. Professional installation recommended.
• Warranty: 1-year OEM factory warranty on both switches. Orders received by 3 PM ship same business day from our warehouse.

Compatibility: Both switches are engineered specifically for the Carrier CH13NA04800GAABA 4-ton split-system condenser. Verify OEM part numbers 312926-252 (high) and 312926-258 (low) against your unit's wiring diagram and data plate before ordering. Not sure which switch you need? Our HVAC parts specialists can confirm fitment — contact us before you order and we'll make sure you get the right part the first time.