Hydro Logic Dual shower pump running when shower not in use.

[miketurner]

I have a Hydro Logic Dual Shower pump (with a JABSCO drain pump) and is around 12 years old.

It started up by itself with no water running. I changed two FS15A (hot and cold supply) flow sensors back in 2017. Now If I run the shower it stops as normal as it is supposed to and restarts after 15 minutes and stops, but then maybe an or so hour later it starts up again with no water running through the shower.

I have been away for a few days with no one at home and found it running.

Just wondering whether I need to change flow sensors again or maybe something else, any advice appreciated before I call my plumber.

 

[dal5band]

Is there any kind of water hammer that could be setting it off ? Toilet, washing machine etc ?

 

[miketurner]

Hi, I don’t think so, we were away for 2 weeks and can be back to the pump running. I will have a check though. Thanks.