Display shows E9 and the refrigerator may not cool or may cycle erratically.

Safety first: Unplug the refrigerator. Do not attempt to open the sealed refrigeration system or handle refrigerant without proper certification.

Basic checks:

• Listen for compressor operation when the unit is powered (before unplugging). A repeated clicking or humming without sustained running suggests a start or inverter issue.
• Inspect the wiring harness and connectors between the main control board and the compressor/inverter module for burns, loose plugs, or damage.

Component inspection:

• Remove the rear lower cover to access the compressor area.
• Check the inverter module (if fitted) for burn marks or a burnt smell. If present, the module should be replaced.
• On non-inverter models, inspect the start relay and overload protector on the compressor terminals. Replace if rattling, burnt, or cracked.

Important: If E9 persists after replacing the start components or inverter, the compressor itself or the main control board may be faulty. Compressor replacement requires a licensed refrigeration technician.