Aircon Louvre Not Moving

A stuck louvre can be a swing motor fault, a linkage jam, or a command path issue. Each looks similar from the room but requires a different fix. The flap behavior and sound pattern narrow it down.

SAFETY WARNING

Stop using the unit and contact a technician if you notice burning smell or electrical smell, sharp crackling from the indoor unit, or loud repeated knocking from the flap area.

Swing Motor Response Fault

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.

We test swing motor voltage output and rotation response to confirm the motor itself is failing before replacing it. Replacing the motor first can fail if the linkage is the real problem.

Linkage Jam or Movement Obstruction

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.

We inspect the flap rail, pivot points, and linkage arm for cracks, warping, or debris that restrict movement. This often gets misread as a board problem when the fault is mechanical movement.

Control Path Issue Causing Repeated Drive Attempts

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.

Stop forcing swing commands and let us check the indoor PCB swing output signal and wiring continuity to the motor. Manual forcing of the flap can damage the linkage and make diagnosis harder.

Not Always a Fault

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.

Help Us Diagnose Faster

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

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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