Dehumidifier displays F0 and will not start dehumidifying

Safety: The sealed refrigeration system must only be serviced by a licensed refrigeration technician. Do not attempt to open refrigerant lines yourself.

User checks:

• Clean both the air filter and visible coil surfaces to ensure proper airflow.
• Operate the unit in a room within the specified temperature range and observe whether the evaporator coil gets uniformly cool or frosty after several minutes.

Technical direction:

• If F0 persists, a technician should check for refrigerant leaks, measure system pressures, and test any pressure or temperature sensors connected to the sealed system.
• Depending on diagnosis, repair may involve leak detection and repair, recharging refrigerant, or replacing a faulty sensor or the compressor.

Note: Because of the cost and complexity, F0 faults on older units may not be economical to repair compared with replacement.