Display shows E8 and the interior lights or control panel may behave erratically.

Safety: Use caution when measuring live voltage. If you are not comfortable working with electricity, contact a qualified technician.

• 1. Verify outlet power: Plug a known-good appliance or tester into the same outlet. If it does not operate correctly, have an electrician inspect the circuit.
• 2. Inspect power cord: Unplug the cooler and check the cord for cuts, kinks, or burn marks. Replace the power cord if damaged.
• 3. Check internal connections: Remove the rear service panel and inspect the main power harness from the cord entry to the control board. Ensure all spade connectors and wire nuts are tight.
• 4. Measure board input voltage: With the unit carefully powered and rear panel removed, use a multimeter to confirm that full line voltage is present at the control board input terminals. If not, trace back to find the open connection.
• 5. Inspect control board power supply: Unplug the unit again. Look for burnt components or bulging capacitors in the power supply section of the board. If damaged, replace the main control board.
• 6. Reassemble and test: After correcting wiring or replacing the board, restore power and confirm that E8 is cleared and that lights and controls operate normally.