F7
Kelvinator Indoor PCB / Display Panel Communication Error

Kelvinator inverter split AC displays F7 and may not respond to remote commands properly.

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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

Loose connection between display board and main PCB, damaged display PCB, faulty communication ribbon cable, main PCB fault

How to Fix / Troubleshooting

Safety: Isolate power before removing the front panel.

Steps:

  • Remove front cover: Open the front panel and remove screws securing the display panel.
  • Check ribbon cable: Inspect the flat cable or harness between the display board and main PCB. Reseat both ends.
  • Inspect for damage: Look for cracked solder joints, burnt components, or moisture damage on the display PCB.
  • Replace display board: If damaged, replace the display/receiver PCB with a Kelvinator-compatible part.
  • PCB replacement: If the display is good but F7 persists, the indoor main PCB may be faulty.
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Repair Difficulty

Medium 3/5

Required Part

Indoor Display / Receiver PCB
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