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O General Ac Error Code 9c May 2026
Technicians sometimes use a powerful magnet to manually "unstick" a seized EEV body. Prevention Tips
Turn off the AC using the remote. Switch off the main power breaker for at least 5 to 10 minutes. This clears the temporary memory of the PCB and may resolve minor software glitches. 2. Inspect the Outdoor Unit
Low refrigerant levels cause the EEV to work harder, increasing the risk of mechanical failure. o general ac error code 9c
Vibrations can loosen the connectors between the EEV and the Outdoor Unit (ODU) PCB.
If you are comfortable opening the unit, ensure the wire harness connecting the indoor unit to the outdoor unit is secure. A loose communication wire is a frequent culprit for "9" series errors in O General models. Technical Solutions for Professionals Technicians sometimes use a powerful magnet to manually
The solenoid coil that drives the valve may be burnt out or disconnected.
Check for any visible obstructions around the outdoor unit. Ensure the fan is spinning freely and that no debris (like leaves or plastic) is blocking the coil. 3. Check Connector Cables This clears the temporary memory of the PCB
Use a multimeter to check the resistance of the EEV coil. If the ohms are outside the manufacturer's specified range (usually around 40-50 ohms depending on the model), the coil needs replacement.