A flashing light is usually a warning signal, not a final diagnosis. It can be triggered by airflow, drainage, sensor, or communication faults. Start with simple checks first, then verify the fault path before approving major replacement.
Primary question
My aircon light keeps blinking. What should I check first before paying for repair?
Blinking behavior often follows a protection trigger. The timing pattern helps narrow the likely cause.
Ask for a clear explanation of what triggered the warning and what was ruled out first.
Get urgent help if the unit keeps tripping, shows burning smell, or repeatedly fails to restart.
In Singapore heat, repeated warning cycles can escalate quickly when left unresolved.
Use this symptom guide to narrow why an aircon will not start, what to check first, and when urgent help is needed.
A practical guide for units that shut down unexpectedly, with pattern checks and urgent warning signs.
Use this framework to check whether a recommendation is evidence-backed before committing budget.
Tell us what is happening. We will assess first, advise one clear next step, and you decide.
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