Vokera boiler on constantly. Room stat showing unknown code. ?
wiring a nest heat link to a vokera 25 he compact ?
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rads warm up when hot water turned on vokera unica 36 he?
How can I sort my thermostat. Code: 20059643?
my pressure on my boiler has gone?
how to ignite voker pilot light?
Error code E82?
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