Display shows ERR3 and grill will not start or shuts down; fan and auger may not run.

Safety first: Unplug the grill before accessing the fan or control compartment. Ensure the grill is cool.

Step-by-step checks:

• 1. Listen for fan at startup: Plug in the grill and start it. You should hear the combustion fan within a few seconds. If there is no airflow sound, proceed with inspection.
• 2. Access the fan: Remove the side or rear service panel (depending on model) to expose the combustion fan assembly mounted near the firepot/air intake.
• 3. Inspect for obstructions: Check that the fan blades spin freely by hand (with power unplugged). Remove any debris, ash, or wiring that may be blocking the blades.
• 4. Check wiring connections: Follow the fan wires to the control board. Ensure the connector is fully seated and wires are not burned or broken.
• 5. Test fan with direct power (advanced users): If comfortable and qualified, briefly power the fan with an appropriate test cord at the correct voltage to confirm it runs. If it does not spin, replace the combustion fan.
• 6. Replace the fan: Remove mounting screws, disconnect wiring, and install a Grilla Grills-compatible combustion fan. Ensure the fan is oriented correctly for airflow into the firepot.
• 7. Evaluate control board: If a known-good fan does not run when connected, the control board fan circuit may be defective and require replacement.

When to call a technician: If you are not comfortable testing motors with live power or replacing the control board, contact a qualified service technician.