Microwave shows H1 and stops heating; may occur during long or high-power cooking.

Safety first: Unplug the microwave and allow it to cool completely before further use.

Step-by-step checks:

• 1. Allow cooling: Leave the door open and wait 20–30 minutes. Once cooled, plug back in and see if H1 clears.
• 2. Check ventilation: Ensure there is adequate clearance around the microwave as specified in the Midea manual. Clean any grease or dust from intake and exhaust vents.
• 3. Avoid misuse: Do not run the microwave empty or with very low-moisture foods for long periods, as this can overheat the cavity.
• 4. Listen for fan: During operation, confirm that the internal cooling fan runs. If it does not, see fan-related faults (e.g., E8) and have the fan motor checked.
• 5. Sensor check (technician): A technician can test the cavity temperature sensor or thermostat for correct resistance and operation. A faulty sensor may falsely trigger H1 and must be replaced.