Microwave displays H98 and does not heat; may stop shortly after starting a cook cycle.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety warning: This error involves the high-voltage system. Only qualified technicians should perform internal testing and repairs.
User-level steps:
- Unplug the microwave for several minutes and then reconnect to see if the error clears.
- Verify that the oven cavity is empty of metal objects or arcing sources (e.g., damaged waveguide cover).
Technician-level steps:
- Inspect the waveguide cover and cavity for burn marks or arcing damage; replace the cover if damaged.
- Test the magnetron, high-voltage wiring, and inverter board for shorts or open circuits.
- Replace any failed components (magnetron, inverter board) with Magic Chef-approved parts.
Important: Because H98 indicates a protective shutdown, do not repeatedly attempt to run the unit without addressing the underlying fault.