Vaillant Ectotech Pro 24 F22 Error

[Scott Miller]

Hi everyone.

My four year old Vaillant ecotech pro 24 has an F22 error.

I've watched a few youtube videos that tell me to turn two plastic grey valves but my boiler doesn't have them, just five pipes with screws. The attached picture shows a map of the underside so I'm able to deduce which is which from left to right if only I knew which ones to turn. Could someone here advise me?

Thanks,

Scott.

 

[ShaunCorbs]

f22 means your pressure in your heating is low take a pic of the boiler plz (with pipes below)

 

[Scott Miller]

 

[kris]

Make sure your pressure gauge Is at 1bar when hearings off. You must have a silver flexible braided hose with valves on them when u open them it pumps up the pressure . Sometimes the hose can be disconnected so u might need to attach it. Sometimes the cold and return attached to boiler have a fill loop but not this one.

 

[anz]

Take a picture of the pipes to the right.

 

[Scott Miller]

Uploader seems to rotate the picture upside down.

 

[anz]

Not under the boiler, the pipes that go off to the right

 

[Scott Miller]

 

[anz]

Top right of the boiler is the filling loop, doesn't look like it's got any handles on, you might need a flat screwdriver to turn it on. It's the silver braided hose.

It doesn't look like it's got a check valve on either, so you should really get it changed.

 

[Scott Miller]

Do I turn one or both and in what order?

Thanks.

 

[ShaunCorbs]

open the right one first (closest to the boiler) and then the left open slightly and watch the pressure gage your aiming for 1-1.2 bar

 

[anz]

Both, (quarter turn each) watch the gauge at the bottom right of the boiler, the needle needs to go halfway in to the grey, no more.

And you definitely haven't got a check valve on, so you should get that changed or your water supply could get contaminated.

 

[Scott Miller]

I did get it working again but the needle didn't move and I got nervous when water started leaking out of the braided hose so I turned them back. I'll have a another go tomorrow to get a more stable pressure.

I'll also look into getting a check valve.

Thanks to those for posting advice.

Scott

 

[ShaunCorbs]

I did get it working again but the needle didn't move and I got nervous when water started leaking out of the braided hose so I turned them back. I'll have a another go tomorrow to get a more stable pressure.

I'll also look into getting a check valve.

Thanks to those for posting advice.

Scott

and looks like it could do with a service and new pressure gage