17
Merlin
Soft Start/Stop or Current Sense Fault
Display shows code 17, opener stops and reverses a short distance after starting.
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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 current sensor on PCB, Loose motor wiring, Incorrect force calibration, Control board failure
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing internal wiring.
- Inspect motor leads: Remove the cover and check that all motor wires are firmly connected to the control board terminals or plug.
- Re‑run force calibration: Some Merlin models allow a force learn procedure. Enter setup mode and run the automatic force learn cycle as per the manual.
- Check for mechanical drag: Ensure the door and rail move freely; excessive drag can confuse current sensing.
- Board diagnosis: If wiring and mechanics are sound but the error persists, the current sensor or soft‑start circuitry on the PCB is likely faulty and the board should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Merlin Control Board (Logic PCB)
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