You'll have something called a filling loop possibly beneath the boiler, it will probably be a short silver flexible pipe with a black thumb turn tap at each end. Turn these tap on till the pressure reaches about 1bar. This is all speculation though unfortunatly, you might actually have...
great boiler :D unfortunatly also a complicated one. i'd agree with combi specialist here, you probs need an RGI to experience the fault and see what's happening. that lockout light can come on for a multitude of things
As above, run the hot water from cold (rads cold too) and see if any heat passes down the heating flow pipe. Check this first before doing anything drastic. Then probs check flow rate and gas pressure etc.... Personally i'm i big fan of this boiler, it very reliable! :)
I second that! It's 100% not an intergral filling loop. It's unusual not to be obviously close to the boiler though... Put up some pix of all the vissable pipes if you don't have any luck
Are you even defending the Isar and icos?? What about the very serious burner pins recall? If that occurs on any isar/icos even out of warranty Ideal will pay up. That boiler has been riddled from day one! Not to mention how badly mucked up the minimiser gets. Anyways, i like worcesters and...
BG don't cover sludge/scale on their contracts so until sonic clean came along many of these problems were chargeable to fix. Now they do a sonic clean for free and quote for any rectification work necessary (scale reducers/flush etc...) It definatly IS financially justified.
So I beleive :D
How about the gas valve passing? if the pilot stays on the PCB with constantly be getting a rectification signal and so cause the cycling fan problem. If you repair the gas valve fault and the fan cycles, then change the PCB.