This question is regarding Aqualisa Aquavalve 600 Thermostatic & 430 Manual - Shower Spares

2-Aqualiser 600 showers with large power pump

Either shower becomes slowly colder on its second shower with lots of hot water left. Needs temperature control continually turned up. Was ok when fitted few years ago. Is it the Pump or the Equalisers. Uses Staffordshire hard water.
Asked 7 years ago by Stuart
It is unlikely to be the cartridge if you are getting a shower out of it.

It may be the filters in the pump are slowly blocking up due to the scale. You could check the filters after the first shower.

Answered 7 years ago by Barrie Seabright

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