Hopefully this is the right place to post, apologies if not.

I live in a new build flat with underfloor heating, have done for 3+ years. The heating has always been fine, I’ve never understood how it works but the flat is always warm. This year I’ve decided to actually look into how our heating works and to programme it so it comes on in the morning and goes off at night.

I’ve always been under the impression that the digital heatmiser unit (Slimeline V3) we have in our cupboard, see image (below our boiler unit thing - we have a district heat network so we don’t have a traditional boiler I don’t believe) was the control panel and it worked with the ambiente dial thermostats (DS-DB night setback dial), that are located in each room (see pictures). I thought if I programme the digital heatmiser unit to come on at certain times then that would tell the ambiente dial thermostats when to be on, and at what termperature. However, it appears the ambiente thermostats aren’t coming on when they ‘should’ be (temp drops and within the time heatmiser unit has heating on).

I called heatmiser and they said that their unit (the Slimline V3) isn’t a control panel, it has no connection to the ambiente dial thermostats. Their unit is just another thermostat and will control the temperature in the room that it is in - but it’s in a tiny utility room cupboard, surely that doesn’t need a room control. They didn’t know what the set up of my heating system was (which is fair enough as it was over the phone).

I’ve also reached out to the company who built the flats and am waiting to hear back, they’re pretty useless so I’m not holding my breath.

3 of the images are of the Heatmiser Slimeline V3 unit, in the utlity cupboard and 1 is of the ambiente thermostats (we’ve got like 5/6 of them throughout the flat)

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