Dehumidifier displays E2 and stops dehumidifying; fan may still run or unit may shut down completely.

Safety: Disconnect power before opening the cabinet. Sharp metal edges are present around the coil and chassis.

How to address E2:

• Reset: Unplug for 5–10 minutes and restart. If E2 reappears, proceed.
• Locate the evaporator sensor: Remove the front cover and filter. The evaporator sensor is usually clipped directly to the evaporator coil tubing (cold coil behind the filter) with two wires leading to the control board.
• Check sensor placement: Ensure the sensor is firmly clipped to the coil and not hanging loose. A loose sensor can cause incorrect readings and trigger E2.
• Inspect wiring and connector: Follow the sensor wires to the PCB. Look for cuts, abrasions, or corrosion. Unplug and replug the connector to ensure a solid connection.
• Test the sensor (advanced): With the unit unplugged, disconnect the sensor and measure resistance with a multimeter. Compare to expected NTC values. If the reading is open or shorted, the sensor is bad.
• Replace if needed: Install a new Keystone evaporator temperature sensor / coil thermistor and secure it to the same coil location.
• Control board check: If a known-good sensor still gives E2, the main control board is likely faulty and should be replaced by a technician.