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I thought this may be helpful as I have seen the same question a few times. A few days ago after my shower I turned the switch to off but the power motor was still running with water still coming out. I thought a new shower or at least an expensive call out. I looked up parts and decided to take a look and if needed replace a whole part or parts to save the call out costs.
the aqualisa is generally easy to dismantle as each part is substantial, if you are unsure look on their web site for the diagrams. This took me about 15 minutes and shower is working perfectly again and I was almost ready to replace parts or even a new shower at £400+. You will only need a cross head and a straight screwdriver.
-isolate the hot and cold supplies, and turn off the power.
- run the bathroom taps to reduce the water reassure and build up in the pipes.
- remove the front on/off dial
- remove the temperature control
- remove the front cover
- remove the black cover that clips over the main black cartridge, there is a black wire wrapped around the front holding the assembly in place so you have to remove the wire cluster that is secured on the right.
- you will see 4 torque screws holding the cartridge in place, these screws also have a straight screwdriver slot - loosen these, Be careful, there will be water and pressure still in the shower, allow this to spray out, it will gradually stop after about 30 seconds, now full remove the 4 screws.
- gently withdraw the cartridge
At the back of the cartridge is a small white water filter, check this and clear it, Mine was full of debris. Also check inside the recess as I found large lumps of grit from the water supply.
i believe the shower could not switch off as the grit and small debris had blocked the on off valve so water was still flowing and the pump therefore continued to run.
Now just assemble in he reverse order, turn the water supply and power on and the shower should work perfectly well.
After I realised that the turning off had felt different and it seemed to be spungy at the final bit of the turn off, I now realise this was the grit not allowing the mechanism to full close.
hope this helps someone.
Posted by James... on
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