While you wait for answers, we may have found some information which could help you.
Success
Message
Diverter valve?
ravenheat 29t ls100t?
ravenheat h85t looses pressure on ch only?
Ravenheat HE85T - no central heating, water working fine though?
ravenheat HE 85T bolier water is blowing through auto air vent any ideas?
ravenheat LS80 shower water not as hot as it used to be?
tap water luke warm?
heating?
ravenheat ls 80t?
I have the same problem did you get an answer?
Air switch on ravenheat csi system a?
RAVENHEAT RSF84T CUTING IN & OUT?