Old shower pump? (moved from Information to Plumbing)

[Scorpiodiymum]

Hi
Our shower pump keeps coming on all the time day or night. The shower is off so I don't understand why this is happening. It becoming very annoying especially in the middle of the night!
Hopefully the picture will be clear to someone? It's the pump in our airing cupboard that works for two showers.
We're doing the house up and I'm sure this is another expense for us. It's a house we are living in so won't be selling anytime soon!
Thanks for any advice.

 

[Nozzle]

Any dripping taps?? Looks like a nice substantial pump though.

Nozzle

 

[fatplumber]

Check EV. Check for leaks.

 

[Scorpiodiymum]

Can't find any leaks. We have a big boiler in the loft too. We've had so many leaks in the last two years of living here. It's almost become a joke.

 

[HERTS P&D]

Faulty flush valve on a toilet?

Andy

 

[Madrab]

Get the flow switches on the pump checked too while checking the EV. Does the pump feed anything else apart from the showers? Is it on a dedicated feed?

 

[Steelmasons]

EV requires re-pressurising (0.9 bar) , common fault with these negative head pumps.