A power surge or sudden power outage can scramble the data stored in the EEPROM.
When Error 9C is active, the compressor and outdoor fan will stop. The indoor unit’s fan may still run, but it will only blow room-temperature or warm air. Continuing to run the indoor fan will not reset the code; only resolving the high pressure will.
O General air conditioners , the error code (which may also appear as typically indicates a communication error between the indoor unit and the remote controller , or it can point to a failure in the indoor unit's power supply or fan motor circuitry. Common Interpretations for "9C" Wired Remote Communication Failure
: Visit O General's official website or contact their customer support. They often have resources such as FAQs, troubleshooting guides, and sometimes databases of error codes.
typically indicates a problem with the Indoor Unit Fan Motor or the related circuitry.