In an earlier contribution to this discussion,
raesene wrote:

Just to say that it's fixed now. I went the safe route and got
someone out to have a look at it. It was an airlock and all working
now!


Thanks for the help

rory

Excellent. Probably the safest thing to do. I wouldn't advise using mains
pressure unless you understand the system design and are sure that it will
not cause any damage.
--
Cheers,
Roger
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