739K views · 13K reactions | HVAC Technician shows how to check if a compressor is grounded. We call it a "Scratch Test". We can further test the compressor by checking the ohms rating between common, run and start. #HVACExperts #hvactechnician #hvacapprentice Working with electricity can be extremely dangerous and should only be performed by a qualified professional. | Alex Ivey | Facebook

For live testing of an indoor AC unit, ensure power is on and use a multimeter to check voltage at terminals. Measure current on compressor and fan wires using a clamp meter. Observe cooling performance, airflow, and unusual sounds. Always follow safety precautions during live testing. #ACRepair #IndoorUnit #LiveTesting #Multimeter #ClampMeter #HVACTesting #CoolingSystem #AirConditioner #ACMaintenance #SafetyFirst #CareSkillsAcademy | Care Skills Academy

To check an AC sensor, first turn off the power. Locate the sensor near the evaporator coil. Use a multimeter to measure resistance or voltage as per the manual. Compare readings to specifications. Replace if faulty. Ensure proper placement and reconnect power for testing. #ACSensorCheck #HVACTips #SensorTesting #ACRepair #TechGuide #HVACMaintenance #MultimeterUse #CoolingTech #DIYACCheck #SensorRepair #CareSkillsAcademy | Care Skills Academy