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error Chamberlain
Error Code 4 UP / 5 DOWN
Opener runs approximately 6-8 inches, stops and reverses. Communication error to travel module.
? What Causes This
Communication error to travel module or travel module connection failure.
✓ How to Fix It
- Check travel module connections.
- Replace travel module if necessary.
Source: page 38 of the official manual
From the manual
This error code appears in:
Chamberlain Chamberlain Garage Door Opener