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These OEM pressure switches — 312926-252 (High Pressure Switch) and 312926-258 (Low Pressure Switch) — are the factory-specified replacements for the Carrier CH13NA04800GAAAA condenser unit. Pressure switches monitor refrigerant pressure on both the high and low sides of the refrigerant circuit, cutting power to the compressor if pressure falls outside safe operating limits. When either switch fails, the system will typically lock out immediately or refuse to start, protecting the compressor from catastrophic damage caused by low refrigerant, blockages, or overcharge conditions.
Compatibility: Both switches are engineered specifically for the Carrier CH13NA04800GAAAA 4-ton single-stage condenser. Verify the failed switch (high or low side) using your manifold gauges and a multimeter before ordering. If you're unsure which switch has failed, our team can help verify fitment and diagnosis before you complete your order. In stock and ready to ship today — get your system back online fast.