E13 error, internal temperature too low or too high, ice quality inconsistent

Safety: Disconnect power before removing interior panels.

Steps:

• Locate sensor: Find the cabinet temperature sensor (usually a small probe behind a cover in the ice compartment wall).
• Check mounting: Ensure the sensor is properly clipped in place and not hanging loose or touching the evaporator directly.
• Measure resistance: Disconnect the sensor and measure resistance at room temperature. Compare to Neff's NTC chart. A reading of 0 Ω or infinite indicates failure.
• Inspect wiring: Follow the cable back to the control board, checking for pinched or broken wires.

Resolution: Replace the cabinet NTC sensor if readings are out of range or E13 persists after reseating connections.