E19 displayed; audible alarm may sound; refrigerator may not cool properly; sometimes associated with power interruptions.

Safety first: Ensure the refrigerator is unplugged before inspecting the power cord or internal components.

Steps:

• 1. Check wall outlet: Plug another appliance into the same outlet to verify stable power. Avoid using extension cords or power strips.
• 2. Inspect power cord: Check for cuts, kinks, or burn marks. Replace the cord if damaged.
• 3. Access main PCB: Remove the rear control cover and inspect the board for burnt components in the power supply section (near where the mains enters).
• 4. Surge protection: If the unit was exposed to a lightning strike or surge, MOVs or fuses on the board may have failed. In most cases, replace the entire PCB.
• 5. Use a dedicated circuit: Ensure the refrigerator is on a dedicated circuit with proper grounding to prevent future E19 errors.

Warning: Do not attempt live testing on the power supply section unless you are trained and equipped for high-voltage diagnostics.