Kelvinator inverter split AC shows F8 and may shut down during operation, especially in heating mode.

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

Failed discharge thermistor on compressor outlet, sensor detached from pipe, damaged wiring, outdoor PCB sensor circuit failure

Safety: Turn off power and wait for components to cool before touching the outdoor unit piping.

Steps:

Locate discharge sensor: Find the thermistor attached to the compressor discharge pipe (hot gas line) inside the outdoor unit.
Check attachment: Ensure it is firmly clamped and insulated as originally installed.
Inspect wiring: Look for heat damage or brittle insulation near the hot pipe.
Test and replace: Measure resistance at ambient temperature (with unit off and cooled). Replace the sensor if readings are abnormal.

Hard 4/5

Compressor Discharge Temperature Sensor

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