Glowworm clearly solar leak

[Earccm]

Hi Folks I have a glow worm clearly solar heating system fitted but I've noticed that the fluid is running down to slates would this be coming from a connector or the panel they've been on the roof for a few years now.

 

[muggles]

When was it last serviced?

 

[Earccm]

It really much to service but was looked at last year.

 

[muggles]

One thing that would be checked on a service is the expansion vessel. Was that checked when it was "looked at"? Could be that it has failed and your relief valve is discharging onto the roof

 

[Earccm]

No it's definitely not that the expansion vessel goes out a different way

 

[ianmcd]

The automatic air separator should be fitted on the return pipework, between the solar pump and the cylinder, but have seen some wrongly installed at the top of the collector panels, is yours fitted correctly ?

 

[Earccm]

Yeah it's working perfectly. Does the panel connector use an o ring that might fail.