What you'll notice
A hum or buzz from the outdoor unit with no fan or compressor rotation, often cutting out after a few seconds and trying again.
Why it happens
A degraded run or start capacitor is by far the most likely cause. They lose capacitance with heat cycling, and a capacitor at a third of its rated value cannot start the motor it serves.
How we fix it
We measure the capacitor against its rated microfarad value with a meter, which is a definitive test taking minutes. Where it has failed we replace it on the spot and the unit is usually back in service on the same visit.
Still not working?
If the checks above haven't restored your capacitor & contactor, this usually needs a technician. Our Aircon Repairs service covers exactly this fault — from R650, quoted upfront.