Display shows E6; interior lights may work but cooling is intermittent or off; sometimes associated with power surges.

Safety: Disconnect mains power before removing any control covers. Electronic boards can store charge; avoid touching exposed solder joints unnecessarily.

Troubleshooting:

• 1. Power cycle: Unplug the refrigerator for 10–15 minutes to allow capacitors to discharge. Plug back in and observe if E6 reappears.
• 2. Access main control board: On most Hansa refrigerators, the main PCB is located at the rear behind a metal or plastic cover. Remove screws and gently pull off the cover.
• 3. Visual inspection: Look for burnt components, bulging capacitors, or darkened areas on the PCB. Check that all connectors are fully seated and free of corrosion.
• 4. Check harness connections: Verify that harnesses from sensors, fans, and compressor are firmly connected. Reseat each connector one at a time.
• 5. Surge protection: If E6 occurred after a lightning storm or power surge, the board is likely damaged internally and must be replaced.
• 6. Replace main control board: If no external wiring faults are found and E6 persists, install a new main control board specified for your Hansa model. Transfer any jumper settings or wiring exactly as on the original.

Note: Board replacement involves handling static-sensitive components. If unsure, have a professional perform the repair.