Display shows E4 and the unit stops cooling; fan may still run.

Safety: Disconnect power before removing rear panels. The condenser area can be hot; allow the unit to cool.

Steps:

• Access condenser: Move the ice maker away from the wall. Remove the rear service panel to expose the condenser coil and compressor.
• Locate sensor: Find the small sensor clipped to the condenser tubing or mounted near the compressor with a two-wire harness.
• Check attachment: Ensure the sensor is firmly clipped to the condenser line. Reattach or secure with thermal tape if loose.
• Inspect wiring: Look for burnt, pinched, or broken wires. Reseat the connector on the main PCB.
• Test sensor: With the unit unplugged, disconnect the sensor and measure resistance. Compare to SMAD specifications. Replace if open, shorted, or far out of range.
• Install replacement: Fit a new condenser temperature sensor, secure it to the coil, and route the harness away from hot or moving parts.
• Reassemble and test: Refit the rear panel, plug in, and run the unit. Confirm E4 is cleared and cooling resumes.