Indoor unit displays lights or symbols but airflow is weak even on high fan speed.

Safety first: Turn off power before cleaning.

Steps:

• Clean filters: Wash or replace the air filters.
• Inspect coil and blower: Check the evaporator coil and blower wheel for dust buildup or ice. Clean as needed.
• Clear obstructions: Ensure curtains, furniture, or covers are not blocking the indoor unit's intake or outlet.

If airflow remains weak: The indoor fan motor may be failing and should be tested and replaced if necessary.