E14
Kärcher Handle Control Communication Fault

Display shows E14; communication error between handle controls and main unit.

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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

Damaged handle cable, Loose connector at handle PCB, Faulty handle control PCB, Corroded low-voltage contacts

How to Fix / Troubleshooting

Safety first: Disconnect from mains before working on handle or electronics.

  • Inspect handle cable: Examine the handle control cable along its length, especially at strain reliefs. Look for cuts, kinks, or crushed sections.
  • Check connectors: Open the handle housing and main body panel to access the low-voltage connectors. Reseat all plugs to the handle PCB and main control PCB.
  • Look for corrosion: If the unit has been exposed to moisture, inspect connectors for green/white corrosion. Clean with contact cleaner and a soft brush.
  • Test buttons: With the unit reassembled, test each handle button. If none respond and E14 persists, the handle PCB or cable assembly may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Handle Control PCB
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