Indoor unit freezes up; ice forms on the evaporator coil and air outlet.

Safety first: Turn off the unit and allow ice to melt naturally. Place towels under the unit to catch drips.

Steps:

• 1. Clean filters: Dirty filters are the most common cause; wash and dry thoroughly.
• 2. Check supply and return vents: Ensure furniture or curtains are not blocking airflow.
• 3. Inspect fan operation: After thawing and restarting, verify strong airflow from the indoor unit.

If icing recurs despite good airflow, low refrigerant or a control issue is likely; contact a technician to check the Panasonic system pressures and charge.