Kelvinator Outdoor Unit Not Responding

The Kelvinator split AC indoor unit runs, but the outdoor unit never starts.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

No power to the outdoor unit, faulty communication cable, failed outdoor PCB, open thermal protector on the compressor.

Safety: Turn off power before checking outdoor wiring.

Steps:

Check outdoor isolator: Ensure the outdoor disconnect switch is ON and supplying power.
Inspect power terminals: Open the outdoor unit's electrical panel and, by a qualified person, verify tight connections and the presence of voltage.
Check communication cable: Confirm that the interconnecting cable is intact and correctly wired between the indoor and outdoor units.
Listen for relay clicks: When the indoor unit calls for cooling, you should hear relays click in the outdoor unit. If not, the outdoor PCB may be faulty.

Note: Further diagnosis (compressor and PCB testing) should be performed by a qualified technician.

Hard 4/5

Outdoor Main Control PCB

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