Microwave stops heating and displays H97; unit may still power on and respond to buttons.
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
Critical safety warning: H97 indicates a serious high-voltage issue. Do not attempt to open the cabinet or service the inverter or magnetron yourself.
User-level steps:
- 1. Stop using the microwave: Unplug it immediately to prevent further damage or risk.
- 2. Power reset: After 10–15 minutes, plug back in and test briefly with a cup of water. If H97 reappears, discontinue use.
- 3. Do not bypass safety: Do not attempt to bypass fuses or safety switches to clear the error.
Service requirement: A Toshiba technician must test the inverter PCB, magnetron, and high-voltage wiring and replace any failed components with OEM parts.