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By Mike C

I have a shower pump that used to work brilliantly. It was triggered by turning on the hot water tap/ shower - anywhere in the house.

My boiler got replaced a few weeks ago and ever since, the pump now only starts / triggers by turning on the cold water tap/ shower. So I now have to turn the cold shower on and very gradually turn the dial to hot water - if I do it too fast then the pump stops working.

Sop basically, the shower pump now works in reverse.

Does anyone have any idea how this might be the case? Was it anything to do with the new boiler being fitted?

Any thoughts ?
User avatar
impossible to say without a full breakdown of your system. sounds like the supplies may have been reversed and my first call would be the installer to check and explain.
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