Display shows H1; temperature reading may be extremely high or flashing.

Immediate actions:

• Check that all doors are fully closed and that no containers or shelves are preventing proper closure.
• Ensure the appliance is not overloaded with warm food; large loads should be cooled in smaller batches.

Inspect door seals:

• Run your hand around the door gasket while the door is closed to feel for cold air leaks.
• Clean the gasket with warm soapy water and dry thoroughly.
• Straighten any twisted sections by warming gently with a hairdryer (on low) and reshaping.

Allow recovery:

• After correcting any door or load issues, allow 12–24 hours for temperatures to stabilize.
• The H1 alarm should clear automatically once normal temperature is restored.

If H1 persists: The temperature sensor may be faulty. Refer to the E1/E2 sensor replacement procedures or contact a technician for diagnosis.