Hoover
No Heating – High Voltage System Failure
Microwave runs but does not heat food at all; light and turntable operate normally, no error code displayed.
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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.
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Possible Causes
Failed magnetron, Failed high-voltage diode, Failed high-voltage capacitor, Open high-voltage transformer primary winding
How to Fix / Troubleshooting
Critical safety warning: The high-voltage section can be lethal. Do not attempt internal repairs unless you are a trained technician.
User-level checks:
- Verify that the timer is set correctly and that you are not in a non-heating mode (e.g., fan-only on some combination models).
- Test with a large mug of water for 2–3 minutes. If the water remains cold, heating is not occurring.
- If the unit hums unusually loudly or smells burnt, unplug immediately.
Next steps:
- Do not continue to operate the microwave without heating; this can further damage components.
- Arrange service with a Hoover-authorized technician to diagnose the magnetron and high-voltage components.
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Repair Difficulty
Professional Required
5/5
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