Recent content by bes

Hi Yes there is DHW flow switch and it is activated (can hear clicking and appropriate LED on PCB lights up) when hot water is demanded. I don't know of any other flow switches. It looks like a job for a corgi man ? Many thanks for response

I bypass fan relay (RY4) and then boiler starts properly but only for as long as relay is out of action. Relay tested and OK even tried new one but still the same. It looks like there is no proper command from PCB to switch the relay on - should fan come on after boiler is switched on or there...

Hi, I,ve got gas combi boiler that is not igniting so no DHW or CH. Power supply is OK, but fan does not start at all. Fan relay RY4 is checked and is OK, also fan is fine on its own - if relay bypassed combi starts OK. Pressure is 2-2.5 bar. Any help please?