Klarstein
Start Circuit / User Interface Fault
Klarstein coffee maker powers on but will not start brewing when the start button is 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
Defective start button, Broken keypad membrane, Control board logic failure, Safety interlock (door/carafe) not engaged
How to Fix / Troubleshooting
Safety first: Unplug the machine before opening the housing.
User checks:
- Ensure the carafe is correctly placed and the filter door is fully closed.
- Cancel any active timer or program mode and try a manual brew.
- Reset the machine by unplugging for 5 minutes.
Button and interlock inspection (advanced):
- Remove the control panel cover to access the start button or touch PCB.
- Test the physical button with a multimeter for continuity when pressed.
- Check door and carafe microswitches for proper operation.
Replace the keypad or control board if the start signal is not reaching the main PCB.
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Repair Difficulty
Medium
3/5
Required Part
Keypad / Start Button PCB
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