E7 error, 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). Remove any foreign objects or heavy dust buildup.
• Inspect linkage: Open the front panel and look at 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 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 and verify smooth louver operation and that E7 is cleared.