Daikin Thermal Expansion / Plastic Casing Noise

Daikin unit emits clicking or ticking sounds frequently during operation

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Possible Causes

Normal expansion and contraction of plastic panels, Louvers moving between positions, Slight misalignment of casing clips

How to Fix / Troubleshooting

Safety first: Turn off power before adjusting panels.

User steps:

  • Ensure the indoor unit is firmly mounted and not flexing against the wall.
  • Gently press along the front panel edges to ensure all clips are engaged.
  • Check that louvers are not hitting the casing; adjust angle settings.

This is often a normal characteristic and not a fault unless the noise is very loud or accompanied by performance issues.

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Repair Difficulty

Very Easy 1/5
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