Slight 'click' sound during start-up or shut-down

Was bedeutet Slight 'click' sound at start-up or shut-down ?

A small clicking sound is heard when the unit starts or turns off. This is normal.

• Thermal expansion and contraction of parts
• Normal operational sound

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1. 1

   This sound is normal and caused by temperature changes in the unit's components.

2. 2

   No action is required.