Combi dripping from red tap on flow pipe? Pictures

[Tomat35]

Hello
There’s a slow drip coming from a red tap/isolator thing under my combo boiler, is there a fix for now?
It’s an Alpha eco2 plus and looks like it is the flow to the radiators.
It doesn’t seem to turn
Thanks

 

[pcaouolte]

Judging by the green gunge on the pipe above the tap, the leak is probably coming from above the tap, possibly inside the boiler casing. Looks like a job for a Gas Safe engineer.

 

[Tomat35]

Yes that joint is covered in green mildew type thing. I can’t see any water coming from anywhere.
I’ve put a bucket underneath and will call a plumber in the morning.
I’ll keep an eye on the water pressure I guess

 

[pcaouolte]

Is the "green mildew" wet or try when you touch it?

 

[Tomat35]

It’s dry, like Verdi Gris or something. I

 

[BlueLoo]

Plumber?

Save yourself a second trip and look for someone with boiler specific experience of your make and model.

 

[Tomat35]

What does this but do? It looks like it should be a simple joint between the boiler and pipe so why does it need this screwy isolator thing?

 

[BlueLoo]

What does this but do? It looks like it should be a simple joint between the boiler and pipe so why does it need this screwy isolator thing?

According to the manual, that is port E and is the primary heating flow. Usual to have a valve on these things to help in cases such as yours where servicing is required.

 

[Tomat35]

Yeah that makes sense, just a shame when it’s the actual valve itself fails.
Looks like spares are obsolete but a few places showing stock, come as a pack with a few parts in, comes to £155!