Leaking copper T

[festive]

Ok I plumbed up the bathroom taps. For some reason resisted doing it all in Hep2O
And did it all with copper. I have plumbed with solder in past but only a diyer level here. Pressured up and my t connected to a horizontal feed from wall leaks on the vertical pointing downwards to the floor.

What a numb nuts I was distraught as it was all going so well. Can I reheat and solder round joint? I don't want to make a dogs dinner or it leak. Of course I need to drain first.

Tia.

 

[Madrab]

You can try and it might take, pressing flux into the joint but it's a hit or miss .... to be sure remove it and redo.

 

[undertrained]

As per @Madrab, I would attempt once if you’re going to redo, I’ve tried and failed a few times thinking it’s taken, when it hasn’t .