While you wait for answers, we may have found some information which could help you.
Click here for Help Boiler Pump Runs Fanravenheat LS80 shower water not as hot as it used to be?
ravenheat HE 85T bolier water is blowing through auto air vent any ideas?
Air switch on ravenheat csi system a?
I have the same problem did you get an answer?
RAVENHEAT RSF84T CUTING IN & OUT?
tap water luke warm?