E13 displayed, unit beeps and shuts down shortly after start, internal temperature reading is incorrect

Safety: Disconnect power before accessing internal wiring.

• 1. Locate ambient sensor: The cabinet or ambient thermistor is usually mounted near the air intake or inside wall of the ice bin area. Refer to the Iceman service diagram.
• 2. Inspect mounting: Ensure the sensor is properly clipped in place and not dangling or touching hot components.
• 3. Check wiring: Follow the sensor leads to the control board. Reseat connectors and look for damaged insulation.
• 4. Measure resistance: At room temperature, measure the thermistor resistance and compare to the Iceman spec chart. Replace the sensor if readings are far off or show open/short.
• 5. Control board evaluation: If a known-good sensor still results in E13, the sensor input circuit on the main PCB may be defective. Replace the main PCB.