F5
Chefman
Stuck Button / Key Short
F5 error and unit beeps continuously when powered.
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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
Debris under touch panel, Damaged keypad membrane, Moisture causing a permanent touch, Faulty keypad circuit on control board
How to Fix / Troubleshooting
Safety first: Unplug the unit before cleaning or opening the control panel.
- Clean the panel: Wipe the touch surface with a slightly damp cloth, then dry thoroughly. Avoid excessive liquid.
- Check for stuck keys: Gently press each button to feel for one that does not spring back normally. If found, the keypad may be physically damaged.
- Internal inspection: Remove the control panel and inspect the keypad membrane and PCB for contamination or corrosion. Clean with isopropyl alcohol if needed.
- Replace keypad: If a specific key area is shorted or damaged, replace the touch control panel/keypad assembly.
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Repair Difficulty
Medium
3/5
Required Part
Touch Control Panel / Keypad Assembly
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