Dehumidifier shows E2 and will not run or cycles off quickly; bucket is empty or partially full.

Safety: Disconnect power before opening the cabinet. Sharp metal edges are common around the coil area; wear cut‑resistant gloves.

Steps:

• Reset: Unplug for 5–10 minutes, then power back on. If E2 returns, proceed.
• Access the evaporator: Remove the front or rear grille (depending on model) to expose the evaporator coil. The E2 sensor is usually clipped to the coil tubing with a metal or plastic clip.
• Check sensor position: Ensure the sensor is firmly clipped to the coil and not hanging loose. Reclip it tightly to the coil surface.
• Inspect wiring: Follow the sensor wires back to the control board. Look for chafing where the harness passes through metal, and verify the connector is fully seated.
• Test sensor: With a multimeter, measure resistance at room temperature and compare to Honeywell’s spec. If the sensor reads open, short, or wildly off spec, replace it.
• Board diagnosis: If a new sensor and good wiring still result in E2, the control board’s sensor input is likely defective and the board should be replaced.

Note: Do not bend the evaporator tubing; this can cause refrigerant leaks and permanently damage the unit.