I'd never thought of this but something I read online suggested my EvoHome touch screen controller could also be used as a zone thermostat, is this the case as it would save the cost of one additional thermostat?
Is EvoHome controller a thermostat?
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Originally posted by MrBoy View PostI'd never thought of this but something I read online suggested my EvoHome touch screen controller could also be used as a zone thermostat, is this the case as it would save the cost of one additional thermostat?
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I was originally going to save the cost of wall stat for a zone with a radiator with a cover (so the HR92 might not work properly) but I thought that the downside of having to avoid moving it into a different room when using it to adjust system, etc, settings outweighed the saving in cost.
In the event, I actually put the controller under the stairs, away from the relevant zone anyway. The cost saving is small compered to the total cost of the work that I was having done - and the greater flexibility seemed worth the extra.
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Something else to watch out for is that when the controller decides to charge its batteries, its measured temperature can increase by a few degrees C for several hours. This has caught me out when using the controller as the room's temperature sensor. Maybe there is a way to convince it to charge the batteries at a given time when this mis-reading won't be a problem, but I haven't found it yet.
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I've spent a few minutes trying to figure this out, or Google a quick answer, and am not sure if I've succeeded or not.
In configuration, I've give into zone config and the only thing I can find is "temperature sensor" which has two options Evotouch Sensor or Remote Sensor (default). Given that Evotouch seems to be an entirely different product range, is this correct? I'm not sure how else to bind the controller to a zone.
As an aside is there a way to see what temp the controller thermostat is measuring directly? I'd like to compare the HR92 temp to the controller temp.
Thanks
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According to Google evotouch is also a precursor to EvoHome, I keep getting manuals for that when I search.
Anyway did this meant I did it right... Simply set the temperature sensor setting for my zone as Evotouch instead of remote? I tried this but saw no change in reported temp to confirm or deny I'd got it right.
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Given that Honeywell don't advertise the product as Evotouch as far as I've seen is it possible that name has just stuck in the trade from an earlier iteration as a generic term like Hoover?
My guess is they called it Evotouch in the days when a touch screen was something special then rebranded, but the name lives on in hidden settings and the memories of those who were there at the beginning
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Originally posted by MrBoy View PostAnyway did this meant I did it right... Simply set the temperature sensor setting for my zone as Evotouch instead of remote? I tried this but saw no change in reported temp to confirm or deny I'd got it right.
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Originally posted by Ian_W View PostSomething else to watch out for is that when the controller decides to charge its batteries, its measured temperature can increase by a few degrees C for several hours. This has caught me out when using the controller as the room's temperature sensor. Maybe there is a way to convince it to charge the batteries at a given time when this mis-reading won't be a problem, but I haven't found it yet.
I do find I have to set the calibration to -1.0C to match an independent thermostat - but that offset required seems to be very constant and is probably due to overall heat production from the device independent of any battery charging.Last edited by DBMandrake; 16 January 2018, 12:38 PM.
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Originally posted by DBMandrake View PostFunny, I graph all my zones and use the controller as the sensor for my hall zone (controller wall mounted) and I have never seen a noticeable temperature rise when the controller is charging its batteries on my graph, certainly not "a few degrees C for several hours". Maybe half a degree at most if that. I wonder what is different with your setup ?
ETA: there's an earlier reference to this behaviour in this post by @paulockenden.
Originally posted by DBMandrake View PostI do find I have to set the calibration to -1.0C to match an independent thermostat - but that offset required seems to be very constant and is probably due to overall heat production from the device independent of any battery charging.Last edited by Ian_W; 16 January 2018, 01:59 PM.
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Originally posted by Ian_W View PostMy set-up differs from yours insofar as the controller is on the shelf mount/cradle, but very rarely leaves it.
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