ideal isar he24
47-348-31
C on display
CH & DHW not calling [OFF]
is the boiler located inside the main house ?
or is boiler located in a cold unheated area?
[garage outhouse shed etc]
if boiler located in cold area check frost stat & pipe stat settings
manwithnoname, May 2012
edit
I can answer this question...
Ideal Isar HE24 Pump on with C on display nothing on?