BWT Perla Keypad Contact Wear / UI Malfunction

BWT Perla display is on but buttons do not respond or respond intermittently

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.

Possible Causes

Worn membrane keypad contacts, Moisture behind keypad, Loose ribbon cable, Contaminated button contacts

Safety first: Disconnect power before removing the front panel.

Dry the panel: If the unit is installed in a damp area, wipe the front panel dry and improve ventilation.
Check ribbon cable: Remove the front cover and ensure the keypad ribbon cable is firmly seated in its connector.
Inspect for corrosion: Look for green or white corrosion on connectors. Clean gently with contact cleaner if available.
Replace keypad module: If buttons remain unresponsive, replace the user interface/keypad module.

Medium 3/5

User Interface / Keypad Module

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