Hi, would appreciate any thoughts on the below. I have an almost 10yr old Ferroli Modena 32S HE system boiler. (I am aware of their reputation! ) 2 weeks ago HW went lukewarm. When HW was called, the rads came on. The cylinder motorised valve has been replaced today, but it's not fixed the issue. On closer inspection of the boiler display, when I call for HW the boiler fires but the little radiator symbol starts flashing, which shows the boiler thinks it's putting the CH on. This despite the programmer showing HW light on, CH off and I can hear the new cylinder valve opening. In addition, the rads are now no longer heating up. The issue I then come up against, I think, is that the boiler heats up what it thinks it CH, but as the rads aren't heating, the return temp is high and the boiler quickly turns itself off with a d2 symbol.
I'm using Drayton Wiser system, but I dont think that's the issue as the motorised valve is opening when I call for HW. It's like the boiler is confusing the HW signal from the heat hub/programmer unit and thinking it's CH being called.
Anyone seen anything like this before? Many thanks
I'm using Drayton Wiser system, but I dont think that's the issue as the motorised valve is opening when I call for HW. It's like the boiler is confusing the HW signal from the heat hub/programmer unit and thinking it's CH being called.
Anyone seen anything like this before? Many thanks