Hi all,
I've a Worcester oil fired condensing combi boiler that I've complained about here on previous occasions. This time it's gone t*ts up as a result of a suspected electrical fault. I suspect it's electrical since the 230v terminal which supplies an external room stat has gone right down to just a few volts. But I've lost hot water as well as heating so it must be a fault that's common to both sub-systems. The boiler 'power' light is illuminated; the 'lock out' light is not, and the on1/on2/off/time lcd panel is likewise showing the usual correct indications. When I turn the hot tap on, just one of the relays on the pcb activates and there's a faint hum from the boiler's internals, but nothing from the fan/burner etc. One clue is that the boiler has recently been taking progressively longer in firing up after switch-on until its now got to where it doesn't fire up at all. Any troubleshooting suggestions, guys?
cheers,
cd