While you wait for answers, we may have found some information which could help you.
Click here for Removed Cover WaterHow can we stop whirring noise when turned off?
Aqualisa power shower?
Aqualisa (blue led) quartz digital not working?
How can i mend my aqualisa digitalpumped shower unit?
Boost mode stuck on after a power cut?
Aqualisa Axis Digital, Lights permanently on but no water ?