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My electric shower is running hot and cold. what should i do?
We live on the top (8th) floor of a building and so have a separate water pump feeding the shower to get the required pressure. We're in London so it's a hard water area, so I'm told the problem may be due to a build up of limescale on the element. Should I replace the shower or the pump first? Or would it be better to replace the cold-fill shower and separate pump with a power shower? Thanks.
Hi Messe, the problem you describe is not uncommon! and the cause is that the flow rate of water through the shower unit is too low, causing the thermal cut-out to activate.
As your on the 8th floor this could be due to low water pressure, and that at this time of year you will have the temperature setting turned up quite high, thus reducing the flow even further.
Firstly its best to check there are no restrictions to the flow of water through the unit, e.g. blocked filter, obvious limescale etc. You can even descale to soime extent by using citric acid, which may help.
Its more likely to be the shower than the pump, but its worth checking to see if your pump has any filters which could be blocked?
Answered 17th Feb 2012