Hello, my aqualisa shower is working intermittently, water starts and then goes down to a dribble, but not all the time. It is an aqualisa quartz.

An issue could cause the problem you're experiencing with your Aqualisa Quartz shower with the shower's thermostatic control valve. This valve regulates the water temperature and maintains a consistent temperature.
One common cause for a shower to become too hot is a malfunctioning thermostatic control valve. The valve may be stuck open, allowing hot water to flow through the shower even when the temperature is set to the lowest setting.
Another possible cause could be an issue with the shower's mixing valve, which is responsible for mixing the hot and cold water to achieve the desired temperature. If the mixing valve malfunctions, it could cause the shower to become too hot.
I recommend checking the thermostatic control valve and the mixing valve for any signs of damage or wear. If either of them is damaged, they will need to be replaced.
If the shower is still too hot even though you have set the temperature to the lowest, it might indicate that the thermostatic valve is not working correctly and needs to be replaced or repaired.
It's best to call a professional plumber or a service technician to check the shower and diagnose the problem; they will be able to find and fix the issue, ensuring that your shower will be safe and functional again.
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Check the power to the computer unit.

sory but i do not see any fancy stuff here so call a local service to assist you with it

https://www.justanswer.co.uk/appliance/9ez4f-aqualisa-quartz-digital-blue-light-flashing-won-t-start-shower.html https://www.justanswer.co.uk/appliance/9ez4f-aqualisa-quartz-digital-blue-light-flashing-won-t-start-shower.html

watch this video as this should be of some help

https://www.youtube.com/watch?v=djUi3SB5-y8

Use ptfe tape or some other kind sealent

This just happened to me this morning, you found a fix for it?

It may be a water hammering effect from pressure in your pipes. You may need to install a water hammer to stop this. you can put in line that will stop this.

this is caused by the water pressure in the pipes check that all the pipes are secured firmly this should stop the problem a piece of rubber or foam placed behind the pump will also help