Microwave will not heat and displays H98
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: H98 is an inverter HV fault. Do not attempt internal repair unless you are trained in microwave HV systems.
User-level actions:
- 1. Unplug and wait: Disconnect power for 10–15 minutes, then reconnect and test. If H98 persists, internal components are likely damaged.
- 2. Do not bypass safety: Do not attempt to bypass fuses or sensors to clear the error.
Recommendation: Contact an authorized Daewoo technician. Inverter and magnetron replacement require specialized procedures and safety precautions.
Repair Difficulty
Required Part
We may earn a commission from links on this page.