Display shows H1 and interior temperature is much warmer than the set point.

Safety: No internal electrical work is required for basic checks; unplug only if removing panels.

Steps:

• Verify door closure: Ensure the door is fully closed and the gasket is making uniform contact around the frame. Look for gaps, torn gasket sections, or shelves preventing closure.
• Allow recovery time: If you recently loaded many warm bottles, the H1 alarm may be normal. Allow 12–24 hours for the temperature to stabilize.
• Check for airflow: Confirm that interior fans are running when the compressor is on. Lack of airflow will slow cooling.
• Feel for compressor operation: Carefully touch the compressor at the back (it should be warm and vibrating slightly when running). If it never runs, suspect a control, relay, or compressor fault.
• Monitor temperature: Place an accurate thermometer inside and compare to the display. If the unit cannot reach set temperature after 24 hours and the compressor runs continuously, a sealed system problem (refrigerant leak, restriction, weak compressor) is likely.
• Reset alarm: Most Magic Chef models allow you to silence the alarm by pressing any button. This does not fix the cause; continue diagnosis.

Important: Sealed system repairs require EPA-certified technicians and specialized tools. Do not attempt to open refrigerant lines yourself.