Toshiba Thermal Expansion Noise / Plastic Casing Movement

The unit emits clicking or popping sounds from the indoor unit during operation.

Possible Causes

Normal expansion and contraction of plastic and metal, indoor unit not mounted firmly, misaligned casing panels.

Safety first: Turn off power before adjusting the unit’s mounting or casing.

Step 1 – Check mounting plate: Ensure the indoor unit is firmly hooked onto the wall plate and that the plate is securely fastened to the wall.
Step 2 – Tighten screws: Gently tighten accessible casing screws to reduce movement.
Step 3 – Allow stabilization: Some clicking due to temperature changes is normal and may reduce over time.

Very Easy 1/5