E7 error: The indoor unit louver does not move or is stuck in one position.

Safety: Turn off power before working on the indoor unit’s front panel and louvers.

• Check for obstruction: Gently move the louvers by hand (do not force them). Remove any foreign objects or heavy dust buildup.
• Inspect linkage: Open the front panel and examine the plastic arms connecting the motor to the louvers. Replace any broken arms.
• Access motor: Remove the right-side cover to access the louver motor. Check the connector to the indoor PCB and reseat it.
• Test movement: Restore power and use the remote to adjust the louver swing. If the motor does not respond or makes grinding noises, it is likely defective.
• Replace motor: Isolate power again, remove the mounting screws, and install a new louver stepper motor. Reconnect the linkage and wiring.
• Final check: Power up the unit and verify smooth louver operation and that the E7 error is cleared.