Refrigerator not cooling properly, display shows H02, compressor attempts to start then stops

Safety warning: Always unplug the refrigerator before touching any internal components. The compressor and inverter carry high voltage.

• Step 1 – Ventilation check: Ensure there is adequate clearance around the refrigerator (typically at least 5–10 cm at sides and back). Clean dust from the condenser coils and fan area at the rear bottom using a soft brush and vacuum.
• Step 2 – Power reset: Unplug for 15 minutes to allow the compressor overload to cool. Plug back in and listen: if the compressor hums briefly and clicks off repeatedly, it may be locked or drawing excessive current.
• Step 3 – Inspect condenser fan: With the rear cover removed, confirm the condenser fan runs when the unit calls for cooling. A non-running fan can cause compressor overheating and H02. Replace the fan motor if seized or noisy.
• Step 4 – Compressor evaluation: If the fan is good and H02 persists, the compressor may be mechanically locked or electrically shorted. This requires a sealed-system technician to confirm with proper gauges and electrical tests.

Because H02 often indicates a compressor or inverter overcurrent condition, do not attempt to repeatedly restart the unit; this can worsen damage. Contact a qualified Panasonic service center for compressor or inverter replacement.