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So, after sorting out a new PCB, and the error re-presenting, I found a comment elsewhere on the net that the UPS2 isn’t compatible with the Baxi Duotec. The boiler has its own pump controller which conflicts with the pumps on board. I’m not aware of any easy way to double this is true or not...

Apologies, I may have got the wrong end of the stick. As most DIYers probably do, I'm hoping I've simply missed something that can be easily put right, before I resort to calling in the pros. Am I posting in the right place? As a newbie to the forum, I can't help but rely on the seasoned...

Hi all. New to the forum with a tricky issue. I have a Baxi Duotec 24 HE A. The pump was getting seriously noisey recently so replaced the head with a new unit. To keep the boiler quiet, I set the pump speed at I. The old pump was single speed. Anyway, since then, I’ve had an E168 error...