While you wait for answers, we may have found some information which could help you.
Click here for Power Shower Aqualisai have a aqualisa shower bur will not turn on?
Boost mode stuck on after a power cut?
How can I fix my Aqualisa Aquastream Shower?
Aqualisa (blue led) quartz digital not working?
Aqualisa Axis Digital, Lights permanently on but no water ?
Aqualisa power shower?