Aircon Not Turning On — Causes, Fixes & Cost in KL
The aircon does not respond to the remote or the power button, or it switches off by itself shortly after starting.
Estimated professional fix: RM 114–RM 455 depending on the fault
An aircon that will not turn on narrows down to one of four things, and the order of checking is fixed because each step is cheaper than the last. First: power. A tripped breaker or a blown fuse at the DB is the most common and the free fix. Second: the remote or the receiver. A dead remote, flat batteries, or a failing receiver board makes a perfectly healthy unit look dead. Third: the capacitor or contactor — the parts that fail most often in Malaysian units, usually after a power surge or a long monsoon season of humidity. Fourth: the main PCB, the expensive end, often killed by surges. The pattern helps: a unit that is completely dead points at power or receiver; one that starts and then shuts itself off points at the capacitor, the compressor thermal, or the board.
Common causes
Professional solutions
Safe DIY checks first
- 1Check the DB first: is the aircon's breaker up, and does the socket have power (test with a lamp)?
- 2Fit fresh batteries and try the remote at close range; also try the physical button on the indoor unit
- 3Listen for the outdoor unit: any hum, click, or attempt to start when you press the remote tells you where the fault is
- 4Smell for burning near the unit and the DB — a burnt smell means stop and do not reset anything
When to call a pro
What affects the cost
The diagnostic visit starts from RM114 and is waived when we repair the unit in the same visit. Power-side fixes (breaker, socket, fuse) are the inexpensive end. Capacitor or contactor replacement starts from RM195, and main PCB repair or replacement starts from RM455 — the PCB is the expensive end and is only quoted after testing confirms it. We identify the fault by running the unit through the power-receiver-capacitor-board sequence, explain each finding, and the repair carries the standard warranty.
How to prevent it
Related service
This problem usually connects to Aircon Service, Repair & Installation. Review service scope, pricing, warranty, and process before booking.
View Aircon Service, Repair & InstallationFAQs
Why won't my aircon turn on?
It could be a tripped breaker, a dead remote, a failed capacitor or a faulty PCB. A diagnostic visit from RM 114 pinpoints it.
Is the diagnostic fee refundable?
The diagnostic fee is waived if we repair the unit during the same visit.
Can a power surge kill an aircon?
Yes. Surges often damage the PCB control board or capacitor. A surge protector on the dedicated circuit helps prevent it.
How much to fix an aircon that won't turn on?
Capacitor replacement starts from RM 195 and PCB repair from RM 455. The final price depends on the part that failed.