Display shows H27, refrigerator may run continuously or not reach set temperature

Safety: Disconnect power before removing any external covers.

• Step 1 – Locate ambient sensor: On many Panasonic models, the ambient sensor is located behind a small grille on the cabinet front or rear, or near the control panel.
• Step 2 – Inspect sensor: Ensure the sensor is not covered by tape, dust, or insulation. It must be exposed to room air.
• Step 3 – Wiring check: Inspect the harness from the sensor to the main PCB for damage. Reseat connectors at both ends.
• Step 4 – Replace sensor: If the sensor is physically damaged or tests open/short with a multimeter, replace it with the correct Panasonic ambient thermistor.