Vaillant Boiler not warming enough

[Steelmasons]

Appliance configurations.

 

[ripperuk]

I can't find such option. Is there an online guide I can follow?

 

[Steelmasons]

You should have a manual.

 

[ripperuk]

okay, I managed to find the installer manual.

I went to:-

Installer Level (17)
Appliance Configurations

From here though, I could not find a d.0 option.

However I managed to check the following:-

Fault codes = None
Flow Temp = 75C
DHW Temp = 50C

Any ideas what I'm doing wrong?

 

[hertsboilers]

Try this first.

Installer level - Appliance config. - Factory Setting - Reset to factory settings? - Yes.

 

[ripperuk]

done....dhw back to 40C, Heating = OFF

 

[hertsboilers]

done....dhw back to 40C, Heating = OFF

Increase them?

 

[ripperuk]

ok..done that...dhw 50c, ch = 75c....same issue still

how do i get to the d.0 option?

 

[Steelmasons]

Go into menu and select 'installer level' whereby it will prompt a code , use code 17 which will get you into installer level , scroll down to 'appliance configuration' and select it...
d.000 will be displayed and again select it , change d.000 from 'auto' to a suitable kilowatt rating by using the +/- buttons , hold select button until software acknowleges the change.

 

[ripperuk]

What kw rating do I choose???

 

[Steelmasons]

Let me consult my crystal ball..
How big is the house?? 3 bedroom?

 

[ripperuk]

4 bedrooms, 2 reception, large kitchen

 

[Steelmasons]

Start off with 18 kw and see if heat up time improves.
These boilers have a 'self learn' feature when set to 'auto' which is factory set...useless feature.

 

[Steelmasons]

Why would you set room stat to 27c?..jeez..

 

[ripperuk]

The only reason I tried 27C was just to make sure that the temperature is rising, but when it stayed stuck at approx 20C, I put the temp down to 22C.

Anyway, I've changed the D.000 setting to 18KW, but can't try it right now as family is asleep and house is already pretty warm. I'll try it first thing in the morning.


One thing I haven't understood though, so maybe could you please explain how changing the setting to manual and the KW, will help the boiler increase it's heat from 58C to 75C????