Safety first: Turn off power at the breaker. The indoor fan can start unexpectedly; keep fingers clear of the blower wheel.

Check for obstructions: Remove the front panel and filters. Look into the blower wheel area for plastic bags, insulation, or other debris. Remove any obstructions.
Spin test: With power off, gently rotate the blower wheel by hand. It should spin freely without scraping. If it rubs, check for misaligned housing or bent wheel and correct as needed.
Inspect motor wiring: Access the electrical compartment and verify the indoor fan motor connector is fully seated on the PCB. Look for signs of overheating at the connector.
Test operation: Restore power and run the fan-only mode. If the fan does not start or starts then stops with E9, the motor is likely failing.
Replace motor if needed: Remove the blower assembly, disconnect the motor, and install a Fujitsu-compatible DC indoor fan motor. Ensure correct wiring and secure mounting.
PCB suspicion: If a new motor still triggers E9, the indoor PCB fan drive circuit may be defective and should be replaced by a technician.

Indoor unit shows E9, unit may stop shortly after starting

Possible Causes