Had a new electric shower put in. A Gainsborough 10Kw.
When the setting is on cold, the pressure is high but when its on
hot, the pressure drops right down.
from centre position, where blue and red meet, (call is 12 oclock)
pressure is fine, but as soon as its on hot at say 2 oclock, it drops
right back. moving it from 2 oclock to full (5 oclock), there is not
Is this common ? thanks, Rob.