Vaillant boiler pressure

[Just make it work]

Evening,

Having some trouble with my Vaillant Ecotec Plus 418, which is showing a F22 error code - low water pressure. Sadly there isn't a filling loop that allows me to repressurise it.

Does anyone know how I might get around this? When I reset it, it starts up but then winds down quite quickly. No noticeable problems in airing cupboard.

Thanks!

IMG-20190401-WA0005

• Just make it work
• 1 Apr 2019

IMG-20190401-WA0007

• Just make it work
• 1 Apr 2019

 

[ianmcd]

Do you have a HW Cylinder somewhere? is there a small expansion vessel (usually red) if there is your filling loop will be there

 

[muggles]

This can also be caused by a faulty pump or air in the system

 

[Mottie]

Sadly there isn't a filling loop that allows me to repressurise it.

How was it filled up initially then?

 

[Just make it work]

How was it filled up initially then?

Good question!

 

[Just make it work]

Thanks for the replies. Hoping the fault is the water pump so will be examining it more closely tomorrow.

 

[hertsboilers]

Check the smaller head tank for water in the loft if you don't have a pressure gauge and filling loop.