Vaillant Ecofit Pure - not starting

Kai77

I forgot to turn off the boiler before releasing air from the radiator today. Luckily heating was off and water was cold!

But now the boiler won't work and the water pressure has dropped to 0.8. Assume it's related to me clearing the air but not sure?

I've tried turning off the boiler and resetting it but it won't start up and displays an F.75 error.

Separately to this I've been hearing a water hammer sound whenever I turn on a tap, hot or cold, but this has been happening for over a week and I'm pretty sure it's because our neighbours have been doing some building work and our pipes are next to theirs.

kimwp

Have you re-pressurised the boiler?

Yorkie1

The manual for my Ecofit pure says that error code F.75 means a fault in the pressure sensor / pressure switch defective.

As kimwp suggests, have you re-pressurised the boiler after letting out some water from the system? Have you put more water back into the system using the valve on the inlet pipe to the boiler?

Kai77

Thank you, that's sorted it out!

kimwp

      Ace!