Lectate leaking through air hole

[Black Jasper]

Looks healthy enough colour wise. It's happened to me but less if I unscrew the blue cap regularly sometimes x 3 daily... that's lockdown for you!

[HotBinDjinn]

I've assumed this leakage is just normal - excess water running down the inside of the front panel. I've had it happen from time to time and rain seems to make it worse.

[Rufus]

Can anyone advise?