Ice maker stops shortly after startup and displays E1 on the control panel.

Safety first: Unplug the SMAD ice maker from the wall outlet before opening any panels. Do not work on the unit while it is energized.

Steps to check and correct:

• Power reset: Unplug the unit for 5 minutes, then plug it back in and see if E1 clears. If it returns, continue.
• Locate the ambient sensor: On most SMAD ice makers, the ambient/cabinet sensor is a small thermistor clipped to the interior liner or mounted near the air intake behind the front or rear panel.
• Inspect wiring: Remove the rear or side service panel. Trace the two-wire harness from the sensor to the main control board. Look for pinched, cut, or corroded wires and reseat the connector on the board.
• Check sensor resistance: With the unit unplugged, disconnect the sensor and measure resistance with a multimeter. At room temperature (20–25°C), most SMAD NTC sensors read between 5–20 kΩ. If the reading is open (OL) or near 0 Ω, the sensor is defective.
• Replace if needed: If readings are out of spec, replace the ambient temperature sensor with a SMAD-compatible part. Clip or screw it back in place and reconnect the harness firmly.
• Reassemble and test: Reinstall panels, plug the unit in, and run a full ice-making cycle to confirm the error is cleared.