Cardale
Electrical Short or Locked Rotor Overcurrent
Opener hums loudly and trips the house breaker or blows a fuse when operated.
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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
Shorted motor windings, Jammed gearbox causing locked rotor, Short on control PCB power stage, Incorrect fuse rating in supply
How to Fix / Troubleshooting
Safety first: Repeated tripping indicates a serious fault. Disconnect power and do not continue to reset the breaker.
- Inspect for obvious damage: Remove the opener cover and look for burnt components, melted insulation, or a burnt smell from the motor or PCB.
- Check door and drive: Ensure the door and drive mechanism are free to move manually; a jam can cause high current draw.
- Electrical testing: A qualified technician should test motor winding resistance and insulation. Replace the Cardale motor/gearbox or control PCB as indicated.
- Correct fuse: Ensure the supply fuse matches Cardale's specified rating; do not oversize the fuse to stop it blowing.
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Repair Difficulty
Professional Required
5/5
Required Part
Cardale Motor / Control PCB
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