Dehumidifier shows E3 and compressor does not start

Safety: Unplug the unit before removing covers. Avoid touching live circuits.

Steps:

• 1. Basic reset: Disconnect power for 5–10 minutes, then reconnect. If E3 returns, continue.
• 2. Locate humidity sensor: On many Beko dehumidifiers, the RH sensor is mounted behind the front grille near the air intake or on a small board connected to the main PCB by a cable.
• 3. Visual inspection: Remove the front cover. Look for a small sensor module or PCB with vent holes. Check for heavy dust, corrosion, or water damage. Ensure the connector is firmly seated.
• 4. Clean the sensor area: Use a soft brush or compressed air to gently remove dust. Do not soak the sensor in liquid cleaners.
• 5. Check wiring: Inspect the cable from the sensor to the main board for damage. Reseat both ends.
• 6. Replace the humidity sensor: If cleaning and reseating do not clear E3, order a compatible Beko humidity sensor module. Disconnect the old one, install the new module in the same location, and reconnect the cable.
• 7. Main PCB check: If a new sensor does not resolve the error, the main control board may be defective and require replacement by a technician.