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Snowflake Aircon Services

Aircon clicking noise

A clicking noise is only useful when you know the pattern. A single normal click is very different from repeated clicking that follows a fault pattern.

Common causes

A symptom is just a starting point. The same problem could be a quick fix or a major failure. The paths below show the most common causes, but only a proper check can prove what is really wrong.

01

Normal click during operation change

Low risk

Some clicks happen when relays switch or airflow parts move during startup, stop, or mode change. The pattern is brief and repeatable without worsening signs.

  • Click is brief and not constant during the run.
  • Cooling behavior remains normal.
  • No strong vibration, smell, or error pattern appears with the click.

The Fix: We confirm the sound timing against normal operation before treating it as a fault.

Watch out: A normal click can lead to unnecessary repairs when the sound is judged without the full pattern.

02

Mechanical movement click from flap or fan area

Book a check

Repeated clicking can come from moving parts that are blocked, misaligned, or struggling to complete motion.

  • Clicking repeats at the same point in a movement cycle.
  • Flap or airflow direction behavior also looks odd.
  • The click often starts when a movement command is triggered.

The Fix: We check the movement path and sound source before naming a part fault.

Watch out: This can be misread as an electrical relay fault when the issue is mechanical movement.

03

Electrical or control clicking with unstable operation

Message now

Repeated switching clicks together with unstable cooling or restart behavior can point to a control or electrical fault path.

  • Clicking repeats during unstable on off behavior.
  • Cooling drops or operation becomes erratic at the same time.
  • Buzzing, breaker issues, or other fault signs appear with the click pattern.

The Fix: Stop repeated testing and let us assess the sound source and operating behavior together.

Watch out: Running the unit while it clicks repeatedly can make the fault path worse and harder to isolate.

Not Always A Fault - one-off switching sounds can be normal

A brief click during startup or mode change can be a normal switching sound. The concern begins when the click repeats, grows, or links to poor cooling behavior.

How to tell

  • The click is brief and tied to the same normal operation moment.
  • Cooling and airflow remain stable.
  • No other noise or fault signs appear with the click.

If the clicking repeats during the run or comes with unstable operation, treat it as a diagnosis issue.

What To Note Before You Contact Us

Observe the sound pattern and operating pattern together:

  • When the clicking starts in the cooling cycle and whether it repeats.
  • Whether the sound seems to come from the flap area, indoor body, or outdoor side.
  • Whether cooling or airflow changes when the clicking happens.
  • Whether the clicking follows a command such as swing, mode, or restart.

Sound timing and location are often enough to narrow the likely path before a visit.

Stop Using The Unit If You Notice These

Stop using the unit if the clicking is linked to clear safety or electrical warning signs.

  • Burning smell or electrical smell
  • Breaker trips or power cut
  • Clicking with sparking, crackling, or heavy buzzing

Common questions

Same situation with your aircon?

Describe what's happening. We'll work out the likely cause before recommending anything.

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