You are quite right, the strainer needs cleaning out I think. 27th of Jan was the last time I cleaned it.
Before strainer clean:
after
after:
They look very similar. So not convinced it is having a big effect of performance.
I wonder what your thoughts are @Ivailo_Stefanov comment from another thread discussing my systems performance.
“These so called hick ups are due to wrong setting of EEV after compressor modulation drop. I made a query in other thread to @Andre_K I think to monitor and log the EEV position at these points but didn`t recieve any feedback…”
When you look at the graph for a DHW cycle, could the huge sudden release of heat be the EEV valve opening fully?