I’ve been running an Ecodan ASHP for 18 months now and gradually getting to understand its performance. I’m using Home Assistant to log data on energy inputs, outputs, internal & external temperatures, wind conditions and other things and have a growing understanding of what’s going on. However I’m frustrated by inconsitencies with the Ecodan’s energy figures, which I’m getting daily through the MELCloud API. I only have basic energy monitoring (EMP1 in their parlance) and I appreciate how basic this is in estimating the energy output. However it is also poor at estimating the kWh electrical consumption as well. I have a MID certified meter on the supply to the Ecodan which rarely corresponds to what MELCloud says. I see that it has a pulse output which meets the spec of the meters in Mitsubishi’s EMP2 energy monitoring pack (only 1 meter though as we don’t use the immersion). I can see from the documentation how to connect it (TB1.3 pins 7 & 8) and I know the FTC5 is set up to accept pulse input. If I can get it working I believe this will force MELCloud to use the MID certified energy consuption.
Has anyone done this successfully? Are there any pitfalls I should be aware of?