Display shows Er8 and grill powers off unexpectedly during operation

Safety first: Unplug the grill before inspecting any mains wiring. Only perform internal electrical checks if you are comfortable and local regulations allow.

• 1. Remove extension cords: Plug the grill directly into a properly grounded wall outlet. Avoid long or thin extension cords that can cause voltage drop.
• 2. Check outlet: Test the outlet with another appliance or a plug‑in tester to confirm stable power. Avoid circuits shared with heavy loads (air conditioners, heaters).
• 3. Inspect power cord and inlet: Examine the Tepro grill’s power cord for cuts, kinks, or burn marks. Check the strain relief and inlet socket on the grill for looseness. Replace damaged cords immediately.
• 4. Internal wiring check: Remove the control box cover and verify that all spade connectors and screw terminals on the power input and control board are tight. Look for discoloration or melted insulation.
• 5. Control board power supply: If the grill still shows Er8 and randomly shuts down, the low‑voltage power supply section on the control board may be failing. Look for bulging capacitors or burnt components. In most cases, replace the entire control board rather than attempting component‑level repair.
• 6. Test run: After corrections, run the grill at a moderate temperature for at least 30–60 minutes to confirm stable operation without Er8.