Safety: Unplug the unit and allow it to cool before servicing. Do not cover the unit during operation.

Steps:

Airflow check: Remove and clean the air filter with water and mild soap. Inspect the condenser coil at the rear for dust buildup; gently vacuum or brush it clean.
Fan operation: Plug in briefly and observe whether the fan starts and runs at normal speed. If the fan does not run, unplug immediately and inspect the fan motor and capacitor.
Temperature sensor: Locate the high-temperature sensor (often attached near the condenser coil or compressor). Check that it is firmly attached and wiring is intact.
Sensor test: With power off, measure sensor resistance and compare to spec. Replace the high-temperature sensor if open/shorted.
Component replacement: If the fan motor is seized or noisy, replace the cross-flow fan motor and ensure the blower wheel spins freely.
Persistent E8: If airflow and sensors are good but E8 remains, the main control board may be misreading temperature and require replacement.

Dehumidifier displays E8 and shuts down; may be accompanied by unusually hot air from the outlet.

Possible Causes