Microwave shows HAC or a similar high-ambient code and may reduce power or stop.

Safety first: If the cabinet or surrounding area feels excessively hot, stop using the microwave until ventilation is improved.

Steps:

• Improve ventilation: Ensure the microwave has the clearances specified in the Hisense installation guide. Move it away from walls or cabinets if necessary.
• Remove obstructions: Clear any items from the top and sides that may block vents.
• Cool down: Turn the unit off and allow it to cool for at least 30 minutes before reuse.

If HAC persists in a well-ventilated area:

• A technician should test the ambient temperature sensor and control board logic.