The display on our isar he30 user control is blank. The heating and hot water still works so I'm not so sure its a problem with the pcb (but what do I know!). We have a remote programmer/timer which we can still use to turn on heating etc. I checked the manual and can't find anything about the user control. Whats the best course of action? Does it mean the system likely to break down soon? Any suggestions please?

Scott, March 2013