Dehumidifier stops running and displays E1 on the control panel

Safety first: Unplug the dehumidifier before removing any panels. Do not work on the unit while it is connected to power.

Steps to check and address E1:

• Power reset: Unplug the unit for 5 minutes, then plug back in and try again. If E1 returns, continue.
• Access the control area: Remove the front or top control panel cover (usually a few Phillips screws). Carefully lift the panel to expose the control board and sensor wiring.
• Locate the room temperature sensor: On GE dehumidifiers this is typically a small thermistor probe on a 2‑wire harness clipped near the air intake grille or evaporator coil and plugged into the main control board.
• Inspect wiring: Check the sensor wires for cuts, pinches, or burn marks. Make sure the connector is fully seated on the control board and free of corrosion.
• Basic sensor test (no meter): If the sensor is loose from its clip, reattach it so it senses incoming air. If the wire is obviously damaged, replace the sensor assembly.
• With a multimeter (optional): Disconnect the sensor from the board and measure resistance across the two leads. A typical NTC thermistor should show several kΩ at room temperature and change when warmed by your fingers. If it reads open (OL) or 0 Ω, the sensor is bad.
• Replace parts as needed: If the sensor is defective, install a new GE-compatible ambient temperature sensor/thermistor and reconnect it. If the sensor tests good but E1 persists, the main control board sensor circuit may be faulty and the board should be replaced.

When to stop: If you are not comfortable removing the control panel or testing with a meter, contact a qualified appliance technician.