Display shows L1 or LO; temperature reading is very low; some items near the back are rock solid and frosted over.

Safety: Extremely low temperatures can cause plastic components to become brittle; handle drawers and panels carefully.

Steps to address L1/LO (overcooling):

• 1. Check setpoint: Confirm the temperature setting on the Leisure control panel. Adjust to -18°C and wait several hours to see if temperature stabilizes.
• 2. Power reset: Unplug the freezer for 10 minutes, then reconnect. Observe whether the compressor cycles off normally after reaching temperature.
• 3. Test cabinet sensor: If the display shows a higher temperature than actual (e.g., display -18°C but actual is -30°C), the cabinet NTC may be misreading. Test and replace the cabinet NTC sensor if out of specification.
• 4. Inspect main PCB: If the compressor runs continuously regardless of temperature, the compressor relay on the main PCB may be stuck closed. Visual inspection may show heat damage around the relay.
• 5. Replace main control PCB if relay is faulty: Install a new Leisure main control PCB following manufacturer instructions.
• 6. Monitor operation: After repairs, use a separate freezer thermometer to verify that the internal temperature matches the display and that the compressor cycles on and off.