E303

Oven overheated (E303)

Appliance: Gaggenau Kitchen Appliances Models: BO 280/281, BO 470/471, BO 480/481

⚠ What This Means

The appliance has overheated. Error code E303 flashes on the display. The oven stops heating to protect the appliance and surrounding cabinetry.

🔧 How to Fix

  1. Switch off the appliance using the temperature knob or function selector.
  2. Let the oven cool down completely.
  3. Restart the oven normally.
  4. If the error persists, contact Gaggenau after-sales service with the error code.

🔍 Possible Causes & Solutions

Possible CauseHow to Fix
Prolonged high-temperature operationAllow the oven to cool down fully.
Ventilation openings blocked or restricted airflowClear all vent openings around the appliance.

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