Microwave stops heating and displays H97; fan and light may still operate.
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: High-voltage components inside a Café microwave (inverter, capacitor, magnetron) can store lethal charges even when unplugged. Do not attempt internal repairs unless you are a trained technician.
User-level steps:
- Power reset: Unplug the microwave for 10 minutes, then plug it back in and try a short cook cycle with a cup of water. If H97 returns, internal high-voltage components are likely faulty.
- Ventilation check: Ensure vents are clear; overheating can stress the inverter, but once H97 appears repeatedly, parts usually must be replaced.
- Service required: A Café technician should test the inverter board, magnetron, and related wiring, replacing the failed component(s). Continued use is not recommended until repaired.
Repair Difficulty
Required Part
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