My Isar Boiler is not working, the display is also blank.
There is a light on the boiler on/off switch so power is obviously getting to the boiler.
I have tried turning the boiler on and off and also held the reset switch in.
IS there anything else I can try
Sounds like the main PCB has gone - very common problem on this boiler - I've changed one today for the same reason. Expensive but definately a DIY job as long as you have the maintenance instructions.
