I would be interested to see some power, heat-output and flow/return temperature graphs of new model Ecodan. Also interested in ‘running information’ values off the controller. Seeing how any ASHP models modulate in different conditions is always interesting. Its quite crucial to getting good eff…

Hi John, I’m pulling data from melcloud but some of such parameters cannot be pulled via the melcloud API interface. Do you have any other way apart the manual pulling via the FTC UI interface ? Cheers, Ale

I am not the person to ask about getting that data out. Others might know. I fitted an ds18b20 sesnor to the compressor discharge pipe (red line). It’s tricky to fit well onto such a small pipe. This was very useful for seeing what was happening. As this shows, the discharge should be superheate…

Well done for the improvements that you have made. its great to share your experience, and we hope that others can do the same sort of thing so more and more people can gain experience from others. Its interesting how quite a few of us dont use weather comp, but it can be used very sucessfully. I …

You’re clearly doing something very right @greentangerine You got your 14kW Ecodan down to drawing just 1kW this evening: [image] I’ve only ever seen mine go down to 1.6kW and that’s very rare. Do you attribute your low draw to switching to the auto-adapt Mitsubishi controllers?

[image] MyForest: Do you attribute your low draw to switching to the auto-adapt Mitsubishi controllers? I’ve absolutely no idea tbh. I went to auto adaptation because the Nest thermostats controlling the WC curve setting (I e. on or off) wasn’t working well at all and with a lot of solar ga…

[image] greentangerine: Unfortunately Mitsubishi don’t publish much at all about auto adaptation Have a read [image] Ecodan Long Cycling and AA behaviour in one day. This is a recording of one day operation of an Ecodan 8.5, reviewing new settings in an attempt to extend the cycli…

I found the trouble with both fixed flow and weather compensation modes is a) FTC tries to get up to target temperature as fast as possible, and b) doesn’t wait long enough between cycles to let the system cool down again. I personally prefer auto adapt because it’s in less of a hurry to get hot, an…

Yes I find it strange that can set the lower and upper limits for AA but with WC there is no way to set the hysteresis. I suppose if I had a perfectly designed system that wouldn’t be an issue as the emitters would be correctly sized to get rid of the heat and the heat pump able to modulate down it…

I’ve only just now figured out that the minimum flow temp for my system is 35 C if I want nice long runs, as that’s how hot my radiators need to be in order to emit 4 kW from the heat pump on it’s lowest power. Unfortunately, the house only needs that amount of heat at 0C or below… [see this post i…

[image] Timbones: Unfortunately, the house only needs that amount of heat at 0C or below I thought your occupants were helping by leaving the windows open :slight_smile: Can any of you just confirm my interpretation of what the auto-adapt is doing? I believe it’s doing something like this wh…

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Anyone monitoring a new R32 Ecodan?

Hardware Heatpump

Vinny (Vinny) 11 November 2023 20:25 134

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Advanced heat pump controls