While you wait for answers, we may have found some information which could help you.
Click here for Thermo Shower ColdAqualisa (blue led) quartz digital not working?
How can i mend my aqualisa digitalpumped shower unit?
i have a aqualisa shower bur will not turn on?
Aqualisa Quartz digital shower ?
How can we stop whirring noise when turned off?
Aqualisa Axis Digital, Lights permanently on but no water ?