Dehumidifier runs but does not collect water; humidity in room remains high.

Critical safety: The refrigerant circuit is sealed and under pressure. Do not cut or open copper lines unless you are a certified refrigeration technician.

• Check operating conditions: Ensure doors and windows are closed and the room size is within the Klarstein model’s rated capacity.
• Inspect coils and filter: Clean the air filter and vacuum both evaporator and condenser coils thoroughly.
• Feel temperature difference: After 10–15 minutes of operation, carefully feel the air at the outlet; it should be slightly warmer than room air. If both coils are at similar temperature and no condensation forms on the evaporator, suspect a refrigerant issue.
• Look for oil stains: Oil spots on copper tubing or joints can indicate a refrigerant leak.
• Professional repair: Refrigerant recovery, leak detection, and recharging must be done by a qualified technician. In many compact Klarstein units, replacing the entire sealed system or unit may be more economical.