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Thanks guys, I've tested the flow with the pump running and it's between 7-10 litres per min.

Thankyou! Do you mean the switch internal to the pipe or the black sensor on the outside? I've tried tracking down Techflow but can't find any existence of it - not sure if they're out of business. Would it be new pump time or are there any spares anywhere that fit? I've tried Googling but...

Yeah the pump just feeds the shower... as soon as I turn the shower on the pump starts, it can be a little rough starting but then works fine, however stops for 0.5s every 10 seconds. The magnet test above seems to get it to run continuously so I'm not sure what that means? The previous owner...

Okay I've found a vaguely similar manual and located the flow switches. If I put a magnet on top of these whilst the pump is running then it runs continuously instead of stopping every 10 seconds. As soon as I remove the magnet it goes back to being intermittent. The magnet makes the pump run...

Also would the pressure vessel slight leak have any impact on anything... maybe air ingress?

Thanks, the photo should be above... its a Techflow Turbo 3NH. Whereabouts is the flow switch located and is there any way to check this please?

Does anyone have any ideas what this might be please? Cheers

Hi all! I've just moved into a house that has a shower pump in the loft, together with a cold water tank just above it, and the hot water cylinder on the ground floor. The upstairs shower makes the shower pump run when it's turned on, but it cuts out for around 0.5s every 10 seconds. It seems...