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Aircon louvre not moving

A stuck louvre is a control and movement pattern issue. The flap may fail because of the swing motor, linkage, command path, or a simple obstruction.

Common causes

These are likely causes for this symptom. Compare them with what you are seeing now to narrow it down. This is indicative only. To confirm the problem, contact us.

01. Swing motor response fault

Book a check

The unit receives the swing command but the flap does not move correctly because the motor is weak, stuck, or unstable.

  • Cooling can still be normal while the flap stays in one angle.
  • Small clicking or jitter sound comes from the flap area.
  • The flap may move a little, then stop or return to the same position.

Solution: We confirm command response and flap movement path before calling it a swing motor fault.

Remarks: Replacing the motor first can fail if the linkage is the real problem.

02. Linkage jam or movement obstruction

Book a check

The flap mechanism is blocked or misaligned, so the motor command is present but movement is restricted.

  • Flap movement looks uneven or catches at one point.
  • The sound pattern repeats at the same flap position.
  • Swing command appears to trigger but full movement does not happen.

Solution: We inspect the flap movement path and linkage behavior before any part recommendation.

Remarks: This often gets misread as a board problem when the fault is mechanical movement.

03. Control path issue causing repeated drive attempts

Message now

A control path issue can send unstable commands and cause repeated drive attempts that create noise or stress at the flap assembly.

  • Flap movement attempts repeat without a stable response.
  • Clicking grows louder or more frequent when swing is triggered.
  • Other command functions may also behave strangely at the same time.

Solution: Stop forcing swing commands and let us assess the control path and flap assembly together.

Remarks: Manual forcing of the flap can damage the linkage and make diagnosis harder.

Other possible causes

Some operating modes or settings can hold the flap in a fixed angle. This can look like a fault when the unit is simply not in a swing pattern.

How to tell

  • Cooling behavior is normal and the flap position stays stable without jitter or clicking.
  • The flap responds later when the operating mode or airflow direction setting changes.
  • There are no repeated movement attempts or abnormal sounds from the flap area.

If the flap still does not respond and the pattern includes clicking or jitter, treat it as a diagnosis issue.

Before you contact us (optional)

Observe the flap behavior safely while the unit runs:

  • Flap movement: Whether the flap is fully stuck / moves slightly / jitters in place
  • Sound pattern: Whether clicking happens only when swing is triggered / stays during normal run
  • Cooling during louvre issue: Whether cooling is normal while the louvre issue happens / not observed
  • Other remote commands: Whether other remote commands work normally at the same time / not observed

Stop using the unit if you notice these

Louvre issues are often non urgent, but stop use if the pattern escalates into an electrical or mechanical safety sign.

  • Burning smell or electrical smell
  • Sharp crackling from the indoor unit
  • Loud repeated knocking from the flap area

Common questions

Same situation with your aircon?

Describe what's happening. We'll work out the likely cause and tell you the right next step.

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