We may have found other answers which could help you.
Click here for Remeha Avanta WaterRemeha Avanta plus?
How can I fix my programmer RWB2 ?
My Remeha Avanta 28C condensing boiler shows an error code?
pressure gauge fault?
Remeha Avanta Plus not not activating heating?
Remeha Avanta Plus 28c no hot water but still have heating?