I have a PRIMA F boiler that dosen't seem to fire for the heating. The boiler will fire when switched for water heating but when switched for the central heating it doesn't even try to ignite. Anyone any good ideas??
You probably have a 3 port valve which needs a new motor.
Do a search on motor. Meantime turn your cylinder stat up , boiler stat down, and push the lever on the motorised valve to the Man position where it will latch.
1.15 is half way through the aftenoon, innit??
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