Low Pressure on boiler - Help! (Vaillant ecoTEC plus 618)

[JamesWizby]

Hi guys - I have a Vaillant ecoTEC plus 618 VU GB 186/5-5 that's showing a low pressure error.

I understand I have to top up the pressure by turning/releasing some valves - the only problem is I have no idea where they are! I can't see any 'grey taps' and tried reading the manual but it's quite confusing. I also can't seem to find any tutorials on this specific model with this pipe setup.

Any help would be much appreciated - I would prefer to try and fix it myself tonight instead of waiting until the morning for a plumber to come out!

Thank you

 

[ShaunCorbs]

looks to be a heat only boiler so have a look where you cylinder is you will/ should find something that looks like this

if you do open one valve fully open (if theres two valves) if theres just one open is for a few seconds then check the boiler and repeat until it reaches about 1-1.2 bar

 

[JamesWizby]

Thank you! found that loop (was hidden behind kitchen cabinets) and turned screw. Problem solved!

 

[ShaunCorbs]

Thank you! found that loop (was hidden behind kitchen cabinets) and turned screw. Problem solved!

good to hear you turned the screw back off again once you set the pressure ?

 

[Dotty]

And we'll not mention about you illegally removing the boiler case.....