While you wait for answers, we may have found some information which could help you.
Click here for Error Message Hot WaterI have a Remeha boiler - there is no error message but the rads dont work?
E5 Error on Remeha Avanta Plus boiler?
How can I fix my Remeha Avanta Plus boiler?
pressure gauge fault?
Remeha avanta boiler 28 - help???
Remeha Avanta Plus 28c no hot water but still have heating?