They had an electric smart meter installed and as it’s smets1, the smart gas meter would not be compatible nor are they willing to change my electric to smet2 so that gas meter can be installed.
The brother and I have similar setups, same boilers and ufh.
His boiler is 2021 whereas mine is 2023 if that makes any difference (identical make and model)
My boiler flow is set to 62 and at mixer to 45, when system is running the boiler flow displays 62 and mixer displays 45.
His boiler is...
D.02 say Max. anti-cycl. time: Heating 25 min
I found this a good explanation http://vaillantcyclingproblem.blogspot.com/2012/01/anti-cycling-mode-and-d2-parameter.html?m=1
Yes this is only UFH on, not been cold enough for radiators to come on.
9 in total for all 6 ports
Manifold display feed in 45°C
Manifold display feed out 31°C
Running a lot better today. only 1 cycle but happened when HW reached temp and actuator switched off.
Reduced flowrate to 1.5l/min
d.00 set to 16kWh
d.02 set to 25 mins
Boiler is running at 65°C with flame at minimum:
d.40 = 65°C
d.41= 57°C
I've checked for any s codes but only code I see...
My IR gun doesn’t give correct temp when measuring the pipes but seems to be fine for everything else! I’ll pick another one up soon.
Yes, ABV installed
Your assumption of running for 5 to 10 minutes then cycling is correct. what i don't understand is why during that 5/10 minute period it hovers at 49°C then suddenly shoots up to 70°C but I've changed d.02 to 25 minutes and will monitor this over 24 hours.
By chance/luck radiators havent come...