"kiich" wrote:

c) valve - i havent checked yet and read that there may be a switch
that only enables HW only and no CH - this could be the cause which i
will check tonight

This is almost certainly your problem. This valve should be
operated by your programmer. Make sure electrical power is
switched on to both and check fuses.

Same when i use the taps/shower in the bath of MAIN bathroom

so it looks like the pump is only coming on for HOT water ONLY in the
main bathroom - why is this?

Being a flat it means the feed to the copper cylinder cannot be
mounted high enough to supply sufficient HW pressure. Cold water
comes through at mains pressure. So the pump boosts pressure for
the entire HW system while acting as a power shower.

Also, when people talk about shower pump, i thought it only boosts the
shower - but in ou flat, it does for taps as well - is this ok?

Yes. Just means the shower pressure will drop if someone turns on
a HW tap.

question 3)
Shower pump (showermate 1.4bar twin max - working pressure 3.5bar) is
way too noisey in the airing cupboard.

how can i reduce this noise? i read that i can have a box and some
insulating stuff around it - but also read this is not good because the
pump may overheat?

the pump is just sitting on a shelf inside the airing cupboard

Slide something padded under the pump. Foam, cardboard, rubber,
anything that reduces transmission of the pump's vibes.

riccip