Display shows H1 and the refrigerator compartment is too warm.

Safety first: No internal electrical work is required for initial checks, but unplug the unit if removing panels.

Steps:

• Check doors and gaskets: Ensure the refrigerator door closes fully and the gasket is not torn or warped. Look for items on shelves preventing full closure.
• Inspect air vents: Inside the refrigerator, locate the cold air inlet vents (usually on the back or side wall). Make sure food items are not blocking these vents.
• Check freezer frost: Look at the freezer back wall. A solid sheet of frost indicates a defrost problem restricting airflow. See the defrost heater fault scenario (E4) for further steps.
• Allow recovery time: After correcting door or loading issues, allow 12–24 hours for temperatures to return to normal. The H1 alarm should clear automatically.
• Sensor check: If the compartment remains warm and H1 persists, test or replace the refrigerator thermistor as described in the E1 scenario.