Primus User Interface Button Failure

Washer powers on but will not start any cycle; start button unresponsive though display works.

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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

Worn or stuck start/pause button, Faulty UI control board, Loose ribbon cable to main PCB, Moisture or detergent ingress into control panel

How to Fix / Troubleshooting

Safety first: Unplug the washer before removing the control panel.

  • Panel cleaning: Wipe the control panel with a slightly damp cloth to remove detergent residue. Do not spray cleaner directly onto the panel.
  • Check button travel: Press the start button repeatedly to feel for sticking. If it does not click, the switch may be worn.
  • Inspect ribbon cable: Remove the control fascia and reseat the ribbon cable between UI and main PCB.
  • Replace UI board: If the button or switches are defective, replace the user interface board with a Primus-compatible part.
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Repair Difficulty

Medium 3/5

Required Part

User Interface Control Board
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