Left filment having issues

It flashes red. Then I manually take out the spool and put it back. The light turns white and starts working. When it’s done, it pulls out but the spool doesn’t spin so it’s a mess. I rewind the spool it so it’s tight again. The other colors print. Then it’s a repeat of the red flash again. Help.

Are you using Bambu spools or 3rd party?

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Bambu spools. I can hear it trying to turn the spool, but nothing is spinning.

Do the rollers spin freely in both directions? I am at work so I can’t check but I believe they should.

Correct, the spools should spin on the rollers pretty freely. If it doesn’t either the spools has expanded or it’s not sitting correct.

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The spool doesn’t fit well in that notch. Is it common for them to expand? What would cause it?

The spool halves can separate. It’s rare but it an happen.

You can respool it onto another spool.

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