Freezer shows E10 and may not cool; compressor does not run even though temperature is high.

Warning: The main control board operates at mains voltage. Unplug the freezer and avoid touching components if you are not trained.

• Confirm symptoms: Verify that the freezer is warm, the compressor is not running, and E10 is displayed even after a power reset.
• Check basic power: Ensure the outlet has power and the power cord and plug are intact.
• Access control board: On many Balay freezers, the PCB is located in a housing at the rear or top. Remove the cover carefully.
• Visual inspection: Look for burnt components, swollen capacitors, or darkened areas on the PCB. A burnt smell is a strong indicator of failure.
• Check connectors: Reseat all harnesses to and from the board, ensuring firm connections.
• Board replacement: If visible damage is present or E10 persists after reseating, the board will likely need replacement. Install a new Balay main control board with the exact part number for your model, transferring any configuration jumpers as required.
• Test: Reassemble, restore power, and verify that the compressor starts and the E10 code clears.

Because of the risk of electric shock and incorrect installation, main board replacement is best handled by a professional technician.