While you wait for answers, we may have found some information which could help you.
Click here for Remove Cover Change
Remeha Avanta Plus 28c no hot water but still have heating?
pressure gauge fault?
How can I fix my programmer RWB2 ?
E5 Error on Remeha Avanta Plus boiler?
Remeha Avanta Plus not not activating heating?
how can i fix my item?