Kelvinator inverter split AC displays H3 and shuts down to protect the compressor.

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

High discharge temperature, blocked condenser, low refrigerant causing overheating, faulty compressor cooling, incorrect voltage supply

Safety: Turn off power before servicing the outdoor unit.

User checks:

Clean condenser coil: Remove dirt and debris from the outdoor coil to improve heat rejection.
Ensure fan operation: Confirm the outdoor fan runs properly; replace if not.
Check ventilation: Improve airflow around the outdoor unit and avoid enclosing it.
Allow cooling: Let the unit rest for 30–60 minutes before restarting.

Technician tasks: Check refrigerant charge, compressor current, and discharge temperature. Persistent H3 usually requires professional diagnosis.

Professional Required 5/5

Compressor Assembly

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