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Refrigerant Pressure Sensor / Switch: Description and Operation

A/C COMPRESSOR TEMPERATURE SWITCH

The A/C compressor clutch is protected from an overheating condition by a A/C compressor temperature switch mounted at the rear of the compressor. The switch is wired internally to the compressor and is not serviceable. The switch shuts off the compressor when temperatures reach 155°C (311°F) and allows the clutch to engage again when temperatures fall to 125°C (257°F).