Unit stops with E8, may occur during high load or extreme temperatures

Safety first: Turn OFF the unit and allow it to cool for at least 15–20 minutes before inspection.

Steps:

• Clean filters: Remove and wash the air filters with mild detergent and water. Dry completely before reinstalling.
• Check air inlets/outlets: Ensure nothing is blocking the front of the indoor unit or the discharge louvers.
• Inspect evaporator coil: If the coil is covered in dust, clean it gently with a soft brush or a non‑rinse coil cleaner. Avoid bending fins.
• Verify fan speed: Run the unit in fan‑only mode and listen for normal airflow. If airflow is weak even on high fan, the fan motor or capacitor (on non‑inverter models) may be failing.
• Room conditions: Extremely high ambient temperatures and closed doors/windows can cause overload. Improve ventilation and reduce heat sources.

If E8 recurs after cleaning and ensuring airflow: The indoor PCB or internal temperature sensor may be faulty. Professional diagnosis is recommended.