Dehumidifier shows E8 and shuts down unexpectedly

Safety: Unplug the unit and allow it to cool before servicing. Overheated components can cause burns.

Steps to resolve E8:

• Clean air filter and grilles: Remove and wash the air filter. Vacuum dust from intake and exhaust grilles. Ensure at least 12 inches of clearance around the unit for airflow.
• Check fan operation: Power the unit briefly (if safe) and verify that the fan starts immediately and runs at full speed. If the fan is slow or not running, see fan motor diagnostics (E7).
• Inspect condenser coil: With the unit unplugged, remove the rear or side panel to access the condenser coil (the warm coil near the compressor). Use a soft brush and vacuum to remove dust and lint from the fins.
• Locate high-temperature sensor or thermal fuse: Many Whirlpool dehumidifiers have a thermal cutoff or temperature sensor mounted near the compressor or on the condenser coil. Check for discoloration, cracks, or loose mounting.
• Test thermal fuse/sensor (if you have a meter): A thermal fuse should show continuity when cool. If it is open, it must be replaced with the exact Whirlpool-rated part. Temperature sensors should show a reasonable resistance value; open/short indicates failure.
• Replace faulty components: Install a Whirlpool-compatible thermal fuse or temperature sensor as needed. Ensure it is mounted in the same location for accurate temperature sensing.
• Control board: If airflow is good and sensors are good but E8 persists, the control board may be misinterpreting temperature data and require replacement.

Test: After cleaning and repairs, run the unit for at least 30–60 minutes and confirm that it operates without overheating or showing E8.