dura ace di2 10 speed red light lit

[hm123]

hello evryone
i have dura ace di2 10 speed there is red light its not the bettery i replace it with a new one
i riding it 1x10 speed wihout the front derailleur
any solution
thank you

[BdaGhisallo]

If it's a solid (non-flashing) red light, it might be in adjustment mode. Have you tried simply pressing the button on the ext junction box?

[hm123]

hello
i pressed the button
the red light show that the bettery is not chargh i replaced the bettery to new and its still red

[FIJIGabe]

Have you previously been able to charge, and now you can't, or is this the first time you've attempted to charge the system? I'm far from an expert in Di2, but I would venture a guess that you either have a loose wire, or the system can't find the FD and is freaking out.

[BdaGhisallo]

hello
i pressed the button
the red light show that the bettery is not chargh i replaced the bettery to new and its still red

Which button are you pressing to check the battery charge? You should be holding down one of the buttons on the shifters to check the battery status. The button on the junction box is for getting in and out of adjustment mode.

[hm123]

hello
i riding wihout the front derailleur i took it out
maybe its the problem ?
the bettery is new

[goodboyr]

7970 or 9070?

[FIJIGabe]

It's 10-speed, so I'm going to assume it's 7970.

[BdaGhisallo]

hello
i riding wihout the front derailleur i took it out
maybe its the problem ?
the bettery is new

That could be the issue. I think with 7970, most of the brains of the system reside in the FD.

[goodboyr]

Correct