Santon Premier Plus Pp210b noise issues

[Mattbang]

I have a Santon Premier Plus Pp210b cylinder only been in use for 2 months.
The problem is the noise it makes when in use.
It sounds like an aeroplane taking off!!
Also makes knocking noises every 30 seconds or so.
Not knowing much about plumbing but i think it is the Automatic by-pass valve causing the problem but could be wrong.
Any advice will be appreciated or any one who has had the same problem.
Keep it simple
Cheers
Matt

 

[Slugbabydotcom]

You need someone who is qualified in unvented hot water supply to check it out for you.
Some possible causes :-
Faulty temperature and pressure relief valve
faulty pressure relief valve
faulty pressure vessel
undersized pipework
valve not opened properly
dirty filter