Refrigerator not cooling, compressor does not start, display may show F01 or alarm beeping.

Safety first: Unplug the refrigerator from the mains before removing any panels or touching wiring. Do not work on live circuits.

Step-by-step checks:

• 1. Power reset: Unplug the appliance for 5–10 minutes, then plug back in. Sometimes the Indesit control board will clear a transient F01 fault after a full power cycle.
• 2. Listen for compressor attempt: After power-on, listen at the back. You should hear a click from the start relay and a gentle hum from the compressor. If you hear repeated clicking and then silence, suspect the start relay/PTC.
• 3. Inspect the compressor start relay: Remove the rear lower service panel. Locate the compressor and the plastic start relay/overload device clipped to its side. Remove it and check for burnt smell, melted plastic, or rattling pieces inside.
• 4. Test or replace the relay/PTC: Using a multimeter (if qualified), check continuity across the relay terminals according to its rating. If in doubt, replace the relay/overload assembly with a compatible Indesit part number for your model.
• 5. Check wiring to compressor: Inspect the harness from the main PCB to the compressor for loose connectors, heat damage, or broken wires. Reseat all plugs firmly.
• 6. If compressor is very hot or hums then trips: Allow it to cool fully (30–60 minutes) and retry. If it repeatedly fails to start even with a new relay, the compressor itself may be seized or internally shorted.

When to call a technician: If the compressor draws high current, trips the overload, or does not start with a known-good relay, a sealed-system technician must test and possibly replace the compressor and evacuate/recharge the system.