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Hi, thanks for replying. Just in case anyone has the same problem and doing a search for this like I did. When replacing the PCB on this boiler you have to also change the front control PCB. This is because the old one is obsolete. Check the dates. I’ve included the link I found which...

Hi Replaced the PCB on our boiler and set the pressure but still I’m get the flashing red alarm signal. Manual says this is no water in the system. Checked pump and seems to be fine. Any ideas would be greatly appreciated. cheers