Indoor unit emits a musty or moldy smell when starting.

Safety first: Turn off power before cleaning. Wear gloves and a mask if sensitive to mold.

• Step 1 – Clean filters: Wash filters with warm soapy water and dry completely.
• Step 2 – Use coil cleaner: Apply a non-rinse foaming coil cleaner suitable for AC units to the evaporator coil. Follow product instructions.
• Step 3 – Clean drain pan: Wipe the drain pan with a cloth and mild disinfectant, ensuring the drain outlet is clear.
• Step 4 – Run drying mode: Many Toshiba units have a self-clean or drying function. Run this periodically to reduce moisture and odor.
• Step 5 – Persistent odor: If smell persists, consider professional chemical cleaning of the indoor unit.