Can anyone explain how this system reports a cop for heating load when nothing is reported on the heat meter and it display 0W heat generated? How come it isn’t blanked like other systems that are just doing hot water in summer.
At the end of the DHW cycle, a small amount of heat will enter the heating circuit when the diverter vales moves back. This heat is recorded as space heating, but it’s a tiny amount of heat, e.g 0.009kWh. This won’t have a significant effect on the overall COP/ SCOP e.g
https://heatpumpmonitor.org/dashboard?id=204&mode=power&start=1783945765&end=1783946585
Ahhh that explains it thanks!