Kelvinator
Outdoor Unit Not Responding
Kelvinator split AC indoor unit runs but the outdoor unit never starts.
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Safety Warning
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.
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Possible Causes
No power to outdoor unit, faulty communication cable, failed outdoor PCB, open thermal protector on compressor
How to Fix / Troubleshooting
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 verify tight connections and presence of voltage (by a qualified person).
- Check communication cable: Confirm the interconnecting cable is intact and correctly wired between 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 done by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Outdoor Main Control PCB
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