E13 appears and the unit refuses to start; often after the unit has been dropped or impacted.

Safety first: Unplug the unit before inspection. If the unit has visible structural damage, do not operate it.

• Step 1 – Visual inspection: Check the exterior for cracks, dents, or misalignment that could indicate internal damage.
• Step 2 – Inspect sensor mount (advanced): Remove the housing and locate the temperature sensor near the heating element. Ensure it is firmly mounted in its bracket and not touching the element directly.
• Step 3 – Check harness: Follow the sensor wires to the control board. Look for pinched, cut, or pulled wires, especially near corners or mounting points.
• Step 4 – Reseat connectors: Gently unplug and replug the sensor connector at the control board to ensure a solid connection.
• Step 5 – Professional service: If the sensor appears intact but E13 persists, the control board may have lost calibration and require replacement.