Display shows F0 and unit will not start dehumidifying.

Safety first: Ensure the unit is used in a suitable environment.

• Check room temperature: Verify that the room is within the specified operating range (typically around 5–35°C for Panasonic dehumidifiers). Move the unit to a suitable room if necessary.
• Improve airflow: Clean the air filter and ensure the intake and exhaust are not blocked by walls, curtains, or furniture.
• Reset power: Unplug for several minutes, then plug back in and test again.
• Sensor check: If the room is within range but F0 persists, inspect and test the room temperature thermistor as described for H14. Replace if faulty.