E17
Cillit
Internal Communication Fault
E17 displayed, unit reports communication error between display and main board
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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
Loose ribbon cable between Cillit display and main PCB, Damaged communication bus, Moisture on connectors, Faulty display module
How to Fix / Troubleshooting
Safety: Disconnect mains power before opening the control housing.
- Inspect cables: Remove the front cover and locate the ribbon or harness connecting the display/keypad to the main PCB. Ensure both ends are fully seated and the locking tabs are engaged.
- Check for moisture: Look for condensation or water ingress around the electronics. Dry gently with a lint‑free cloth and allow the unit to air dry completely before re‑energizing.
- Examine connectors: Inspect for bent pins, corrosion, or burnt spots. Clean lightly with contact cleaner if needed.
- Module swap: If available, test with a known‑good display module. If the error clears, replace the Cillit display/keypad module. If not, the main PCB may be defective.
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Repair Difficulty
Medium
3/5
Required Part
Cillit display/keypad module
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