Indoor unit emits clicking or ticking noises when starting or stopping

Safety first: Turn off power before adjusting louvers or casing.

Steps:

• Identify source: Listen closely to determine if the noise comes from louvers, casing, or internal components.
• Check louvers: Ensure louvers move freely and are not hitting obstructions. Adjust their angle.
• Secure casing: Gently press on different parts of the casing while the unit runs to locate loose areas. Tighten screws or add thin foam tape where panels meet.
• Note: Mild clicking during temperature changes is often normal and not a fault.