Safety: Turn off the breaker or unplug the unit before opening the indoor unit cover.

Steps:

Open indoor unit: Remove the front cover and air filters. On wall-mounted Electrolux split units, the evaporator sensor is usually clipped to the evaporator coil fins near the center or right side.
Check sensor placement: Ensure the small probe is firmly clipped to the coil. If it has fallen away, reattach it securely so it senses coil temperature correctly.
Inspect wiring: Follow the two-wire harness from the sensor to the indoor PCB. Look for cuts, crushed insulation, or loose connectors. Reseat the connector.
Measure resistance: With power off, disconnect the sensor from the board and measure resistance. Compare to Electrolux service chart if available; typically 5–20 kΩ at 25°C. Replace if open, shorted, or far out of range.
Replace sensor: Install a new evaporator NTC sensor if faulty. Route wiring away from the fan and sharp edges.
Check PCB: If a known-good sensor still triggers E2, the indoor PCB sensor circuit may be defective and require replacement.

Unit stops cooling and displays E2 after running for a short time

Possible Causes