F7
Hitachi
Keypad Short / Multiple Key Press Detected
Hitachi oven shows F7 and may start or stop unexpectedly when keys are pressed
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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
Liquid spill behind touch panel, Shorted keypad matrix, Damaged touch glass or membrane
How to Fix / Troubleshooting
Safety first: Turn off power and ensure the glass panel is cool before handling.
- Inspect for spills: Look for signs of liquid or steam that may have entered around the touch panel edges. Carefully dry the area.
- Clean surface: Wipe the glass with a soft, dry cloth. Avoid excessive moisture.
- Test after drying: Leave the oven powered off for several hours to allow internal moisture to evaporate, then restore power and test.
- Check for cracks: If the glass is cracked or the touch panel is physically damaged, it can cause permanent shorts.
- Replace touch panel: If F7 persists and certain keys trigger random functions, replace the complete Hitachi touch control panel assembly.
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Repair Difficulty
Medium
3/5
Required Part
Touch Control Panel Assembly
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