I've been using one with Havenwise control since I had the heat pump installed, and haven't had any issues.  In terms of fine tuning the internal temperature requirement, it would be nice to have more granularity to set a temperature, but it hasn't been a problem.

I have relocated the device from its original position though.  Like you I started with the likely coolest area of the house (which is on the staircase halfway landing at the point it changes direction, which is the furthest point from any radiator within the house).  After a few weeks I moved it into the living room, as this room felt a little too hot at times when the staircase was setting the overall target.  This has been a much better location for it, in terms of finding the optimum level of temperature throughout the house.

I've been trialling weather compensation control for the last couple of days, so have switched off Havenwise heating control for a while, so am currently using it for DHW only.  However, in practical terms this hasn't changed the limitation you describe with the display.  The 'target' has been 29.5°C with Havenwise, as it is moved out of the way of their control parameters when in operation, but for WC control it still needs to be set 'high' so that there's a constant demand for heat, so I've now got it set to be 27°C, purely so that I can more easily distinguish the WC mode from the Havenwise control when looking at the stats.  The controller is 'dumb' in terms of the actual temperature being achieved in the room, which is now a function of outside air temperature and the heat curve settings.

I haven't used adaptive mode, but my expectation would be that you'd see the target temperature that the schedule you've set up requests, along with the actual temperature in the room, so it would function in the same way as a typical smart room thermostat would work if it was being used to set the overall target temperature for the system.  Neither Havenwise or WCC control uses it for a target in that way, so it's essentially a reporting device only in those modes.

Posted by: @sheriff-fatman

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I've been using one with Havenwise control since I had the heat pump installed, and haven't had any issues.

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Are you sure?

I only ask to clarify. The MAC-567IF is the wireless adapter for connecting the FTC to your network so it can talk to Mitsi’s Internet servers. The PAR-WT60R-E is a wireless controller that provides an in-house display and buttons so you can change settings without using an app. Most of us have a wired controller instead, so the wireless one simply replaces a two-wire cable with wireless comms to the FTC without going anywhere near the wifi network.

Obviously you know better than me what’s installed in your house so I could be teaching Granny to do a bit of egg-sucking, in which case I apologise. However, since these are two different wireless components using different wireless technologies to perform different jobs I thought it best to risk it for clarity’s sake.

@majordennisbloodnok It's one of these, I believe.

@sheriff-fatman Yes that is the one I was referring to.

@davidalgarve That's what mine is currently displaying from the living room, with the system operating on a weather curve currently.  I can amend the target temperature, but the only requirement currently is to set it above the target temperature to create an ongoing call for heat, hence 27°C does the job in that regard.

@sheriff-fatman Thanks for that. Is the fact that you are calling for 27C a way of boosting what you would get from the weather compensation? I take it that you don't use the boost feature on the FTC?

If I decide on adaptive, I would like the weather compensation to do most of the control, but the PAR 60 to act to limit temperature in the event of heat input from outside (sun) or inside (wood burner).

Posted by: @davidalgarve

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@sheriff-fatman Thanks for that. Is the fact that you are calling for 27C a way of boosting what you would get from the weather compensation? I take it that you don't use the boost feature on the FTC?

If I decide on adaptive, I would like the weather compensation to do most of the control, but the PAR 60 to act to limit temperature in the event of heat input from outside (sun) or inside (wood burner).

The 27°C request doesn't boost the weather compensation, which would do exactly the same thing if I'd set it at 25°C, or any figure above the actual room temperature I want, as long as it's creating an ongoing call for heat from the system.  The system will try to achieve that temperature, but is constrained by the flow temperatures set by the weather curve for any given outside air temperature.  It's the weather curve settings that determines what is actually achievable at any given temperature, and I'm less than 48 hours into seeing how the initial curve settings are performing, so only have a very limited sample so far.  A room temperature of 21°C, as shown on the display, is where I want it to be, so it's doing OK in current conditions, but I'm sure there's further tweaking of the curve still to be done over time to get it performing optimally.

For now I'm mainly interested to see how it performs vs the Havenwise controls, as I had no 'baseline' data of operating without Havenwise to be able to assess this.