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To check an AC sensor, use a multimeter to test its resistance or voltage output. Compare readings with standard values. Inspect wiring for damage. A faulty sensor can cause incorrect cooling or shutdown issues. Always disconnect power before testing and refer to the service manual for sensor specifications. #ACSensorCheck #ACTroubleshooting #HVACTraining #CoolingSystem #SensorTesting #ACRepairing #MultimeterUse #TechnicalSkills #AirConditionerRepair #skilldevelopment #careskillsacademy #acrepai