E6
Philips Communication Error Between Display PCB and Main PCB

Philips dehumidifier shows E6; unit may not respond to control inputs or may shut down unexpectedly.

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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 user interface board and main control board, Damaged communication harness, Oxidized connectors, Faulty display PCB or main PCB

How to Fix / Troubleshooting

Safety: Unplug the unit before removing the control panel or covers.

  • Access control panel: Remove the front/top panel screws to access the display/control PCB.
  • Check ribbon cable: Locate the flat ribbon or multi-wire harness connecting the display PCB to the main PCB. Ensure both ends are fully seated and locked.
  • Inspect for damage: Look for kinks, cuts, or burn marks on the cable. Replace if damaged.
  • Clean connectors: Gently unplug and reinsert the connectors several times to wipe oxidation from the contacts. Use electronic contact cleaner if available.

If E6 remains, either the display PCB or main PCB may be defective. Board-level diagnosis is complex; replacement is usually done by a service technician.

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Repair Difficulty

Medium 3/5

Required Part

User Interface PCB
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