Kelvinator No Power / Indoor Power Supply Failure

Kelvinator split AC does not power on at all; no lights or display on indoor unit.

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

Tripped breaker, blown internal fuse on indoor PCB, faulty indoor power supply board, loose live/neutral connections

Safety: Turn off the breaker before opening any covers.

Steps:

Check mains: Verify that the wall outlet or isolator has power and the breaker is not tripped.
Inspect indoor terminal block: Remove the indoor unit cover and ensure all power wires are securely fastened.
Internal fuse: Many Kelvinator indoor PCBs have a small glass or ceramic fuse. If accessible, visually inspect and replace with the same rating if blown.
PCB replacement: If the fuse blows again or the board shows burn marks, the indoor PCB likely needs replacement.

Hard 4/5

Indoor Power Supply PCB

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