Cardale
Disengaged or Slipping Drive Mechanism
Opener runs but door does not move; motor can be heard, but the door stays closed or open.
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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
Emergency release left in manual mode, Broken Cardale drive chain or belt, Stripped drive sprocket or carriage teeth, Door arm disconnected from carriage
How to Fix / Troubleshooting
Safety first: Keep clear of the door while testing. Disconnect power before handling the rail or carriage.
- Check emergency release: Ensure the red release cord has been re‑engaged. On most Cardale units, you must pull the cord toward the opener or move the carriage until it clicks back into drive mode.
- Inspect chain/belt: Look along the rail for a broken or hanging chain/belt. Replace if broken and set correct tension.
- Check carriage engagement: Confirm the trolley/carriage is locked onto the chain/belt and not free‑sliding. Replace a worn or cracked carriage.
- Verify door arm connection: Ensure the door arm is securely bolted to the door bracket and carriage. Tighten or replace fixings as needed.
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Repair Difficulty
Medium
3/5
Required Part
Cardale Chain/Belt and Trolley Assembly
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