setting, the magnetron or its cooling fan may be failing, or the internal wave-guide cover could be dirty/arcing. Safety Warning
: Unplug the unit immediately or flip the circuit breaker. Overheating in appliances like microwaves can lead to internal component melting or fire hazards. juq703uc hot
: Plug it back in and run a brief test (e.g., heating a cup of water for 30 seconds). If the "HOT" warning returns instantly, the control board likely needs replacement. Summary of Common Causes Likely Cause Recommended Action Code "HOT" on Display Faulty Thermal Sensor Replace NTC Thermistor No Fan Noise Fan Motor Failure Replace Cooling Fan Exterior Case Hot Poor Ventilation Clean Vents / Move Unit Buzzing + Heat Magnetron Failure Professional Repair Required Juq703uc Hot setting, the magnetron or its cooling fan may