Where is thermostatic cartridge located in aqualisa quartz shower

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.
.

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

Use ptfe tape or some other kind sealent

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

If you are not getting any water through your shower it is possible that there is a restriction.

Please note that the air lock test is only neccessary if you're shower is the Pumped Digital Quartz or Quartz Thermo Mixer Shower and that you are on a Gravity Fed Water System (cold tank in loft).

The hose will appear fine from the outside,but the hose has an internal rubber liner which can become blocked/twisted.
To remedy this,unscrew the shower head from the hose anti-clockwise.Place the open end of the hose to it's lowest point (bath or tray).
Turn the water on.The water SHOULD come out in a straight line,if however the water comes out in a V-Shape the liner is twisted and the hose will need replacing.


Air Lock
If there is air in your pipework this will cause low flow and pulsing.To remedy this fault do the same above but run the water on FULL COLD for two minutes and then FULL HOT for three minutes.
If the water pulsates it is the air escaping.If it does this leave it until it corrects itself.

Hope that this info helps you,if it doesn't it sounds like you have a mechanical fault with the processor box.

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