Proline
Start Circuit / User Interface Fault
Dryer powers on but will not start a cycle; pressing the start button does nothing, no error code.
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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
Defective start button switch, Faulty user interface PCB, Broken wire between UI and main board
How to Fix / Troubleshooting
Safety first: Unplug the dryer before removing the control panel.
Step-by-step checks:
- Confirm door closed and settings: Ensure the door is fully closed and a valid program is selected. Some models require pressing and holding the start button for a few seconds.
- Check child lock: Verify that any child lock function is disabled (refer to user manual).
- Inspect start button: Remove the control panel fascia and check the physical button and microswitch. Test the switch with a multimeter for continuity when pressed.
- Check ribbon cable: Ensure the cable from the UI to the main board is firmly connected and undamaged.
When to call a technician: If the start signal is not reaching the main board despite a good switch, UI or main PCB replacement may be needed.
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Repair Difficulty
Medium
3/5
Required Part
User Interface PCB
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