Safety: Unplug the unit. Do not attempt to open or recharge the sealed refrigerant system yourself.

Steps:

Clean filter and coil: Remove and wash the air filter. With the front panel removed, gently vacuum dust from the evaporator coil fins using a soft brush attachment. Do not bend the fins.
Check airflow: Ensure intake and exhaust vents are clear and that the unit has adequate clearance from walls and furniture.
Inspect for frost or oil: After running briefly (if it will run), look at the evaporator coil. Heavy, uneven frost or oily residue on tubing can indicate a refrigerant issue.
Sensor check: Refer to the E2 entry for testing the evaporator temperature sensor. A faulty sensor can falsely trigger E8.
If E8 persists: Persistent E8 after cleaning and sensor verification suggests a sealed system problem (low refrigerant, restriction, or weak compressor). These repairs require specialized tools and are usually not cost-effective on small dehumidifiers.
Next step: Contact a qualified refrigeration technician or consider replacing the unit if out of warranty.

Dehumidifier shows E8 and will not start the compressor

Possible Causes