Heatline Solaris 30PC shows F0 fault
I have replaced EV and PRV and pressure sensor with new parts from a spare unused boiler of the same model.
I have disconnected the fill loop, EV charged to 0.5 bar before fitting.
System pressurised to 1.1 bar and found to be working but only a few hours later pressure had dropped again.
Only thing I haven't changed is the PCB.
Don't know what to do now and engineers don't like working on Heatline boilers, can't say I blame them.
Which is the best combi to have installed instead?
Heatline hater, December 2014