How to mend Pressure Heating Vokera Linea

I have a Vokera 24 that shows error code 07. can anyone help me fix it?

Vokera boiler on constantly. Room stat showing unknown code. ?

water drips from overflow?

heating system?

vokera boiler not 2yrs old yet , wont work?

vokera boiler no heat but 2nd pipe from the left is red hot?

Max pressure?

my pressure on my boiler has gone?

wiring a nest heat link to a vokera 25 he compact ?

Ignition failure on Vokera Vision C boiler?

no hot water/heating?

Vokera sorry ?

Vokera mynute 35e fault code 08 what is problem?

Vokera excell boiler needs topping up every couple of days ?

how can I fix my Vokera linea 24 Combi?

how can we fix our Vokera compact 29a lose presure ?

Max pressure?

Boiler age?

Faulty vokera boiler compact 25?

How can I sort my thermostat. Code: 20059643?

rads warm up when hot water turned on vokera unica 36 he?

how to ignite voker pilot light?

Vokera Maxin 28e combi boiler, DHW runs hot and cold?

Vokera mynute 28se?

Max pressure?

Faulty vokera compact 25?

timer on my vokerera excell boiler does not go round, how do i fix it?

vokera 12-48rse?

I have a vokera 24m gas boiler ?

Error code E82?