Best Wifi enabled thermostat

[subirg]

I’ve installed Heatmisers in my house. Like the system. 6 zones. All connected into my C4 home automation set up.

Just one problem... one of the thermostats is fitted to the inside of an external wall and i think it’s causing it to think the room is colder than it is. Net result is on a cold day the thermostat reads less than 21C when the room is up at 24 or more. Any ideas on how to cure?

[Jobbo]

kapiteinlangzaam said:

five5 said:

I've had Evohome for a couple of years now, it's great and does everything I need, but something keeps bugging me.

At 11pm during the week ALL ZONES (12 of them) are set to be turned down to 12 degrees or less, (unused rooms like guest bedrooms etc are set to 5 degrees). The hot water is set to OFF at the same time. For the next hour or so the boiler will fire and heating water pumped around the system every 10 minutes or so (duration: less than a minute). The controller shows that every single room is easily 5 degrees above the target temperature - so why is my boiler firing. Any ideas?

Mine was doing something similar.... And i might have cured it yesterday.

It can be due to one (or more) valves not fully closing, and therefore still demanding heat.... Which of course triggers the boiler.

As default the HR92s are set in valve 'eco' mode, but you can change them to 'full' mode, which cycles the pin/valve farther and can stop this happening.

Is this linked to one HR92 demanding 1% heat? Someone mentioned it on here a day or so ago, and when I looked at the new firmware in my controller I noticed one zone demanding 1% as well.

[dickymint]

subirg said:

I’ve installed Heatmisers in my house. Like the system. 6 zones. All connected into my C4 home automation set up.

Just one problem... one of the thermostats is fitted to the inside of an external wall and i think it’s causing it to think the room is colder than it is. Net result is on a cold day the thermostat reads less than 21C when the room is up at 24 or more. Any ideas on how to cure?

Not a cure but to prove your suspicion pop some insulation between the wall and the stat to see if it makes a difference?

[five5]

Jobbo said:

kapiteinlangzaam said:

five5 said:

I've had Evohome for a couple of years now, it's great and does everything I need, but something keeps bugging me.

At 11pm during the week ALL ZONES (12 of them) are set to be turned down to 12 degrees or less, (unused rooms like guest bedrooms etc are set to 5 degrees). The hot water is set to OFF at the same time. For the next hour or so the boiler will fire and heating water pumped around the system every 10 minutes or so (duration: less than a minute). The controller shows that every single room is easily 5 degrees above the target temperature - so why is my boiler firing. Any ideas?

Mine was doing something similar.... And i might have cured it yesterday.

It can be due to one (or more) valves not fully closing, and therefore still demanding heat.... Which of course triggers the boiler.

As default the HR92s are set in valve 'eco' mode, but you can change them to 'full' mode, which cycles the pin/valve farther and can stop this happening.

Is this linked to one HR92 demanding 1% heat? Someone mentioned it on here a day or so ago, and when I looked at the new firmware in my controller I noticed one zone demanding 1% as well.

Interesting, thanks. I haven't looked at the new 'heat demand' - is that 'live' or 'over a certain time period'?

[Jobbo]

Seems to be live - there's no graph or anything like that. Must find a way to log it over time...

I only found it by accident; I think it was by using the long press on Settings and going into devices. The demand % is a new column on the right.

[subirg]

dickymint said:

Not a cure but to prove your suspicion pop some insulation between the wall and the stat to see if it makes a difference?

Thanks for the idea. I’ll do that.

[Jambo85]

dickymint said:

subirg said:

I’ve installed Heatmisers in my house. Like the system. 6 zones. All connected into my C4 home automation set up.

Just one problem... one of the thermostats is fitted to the inside of an external wall and i think it’s causing it to think the room is colder than it is. Net result is on a cold day the thermostat reads less than 21C when the room is up at 24 or more. Any ideas on how to cure?

Not a cure but to prove your suspicion pop some insulation between the wall and the stat to see if it makes a difference?

..and this is the cure - remote sensor:

https://www.theunderfloorheatingcompany.co.uk/prod...

Pop it in a more representative wall or ceiling, two wires into the back of the stat and go into the settings somewhere to tell it to use it.

[five5]

Jobbo said:

Seems to be live - there's no graph or anything like that. Must find a way to log it over time...

I only found it by accident; I think it was by using the long press on Settings and going into devices. The demand % is a new column on the right.

I found it. So I've got 3 zones that are calling for heat when, in my view, they shouldn't be (i.e. the room temperature is +4 or more degrees higher than the TRV is set to). One of them is saying 54%! any ideas how to resolve this?

[Trustmeimadoctor]

five5 said:

Jobbo said:

Seems to be live - there's no graph or anything like that. Must find a way to log it over time...

I only found it by accident; I think it was by using the long press on Settings and going into devices. The demand % is a new column on the right.

I found it. So I've got 3 zones that are calling for heat when, in my view, they shouldn't be (i.e. the room temperature is +4 or more degrees higher than the TRV is set to). One of them is saying 54%! any ideas how to resolve this?

Hammer!

[Jobbo]

five5 said:

I found it. So I've got 3 zones that are calling for heat when, in my view, they shouldn't be (i.e. the room temperature is +4 or more degrees higher than the TRV is set to). One of them is saying 54%! any ideas how to resolve this?

No, but I'd be interested to know the answer myself. Is it faulty HR92s?

ETA: I've googled a bit - can't see anything helpful yet except one suggestion that erroneous demand is caused by an HR92 being bound twice to the controller. Which makes me wonder about my ensuite HR92, which never seems to function as well as I'd like (it seems to turn off when the room is 3 degrees below the setpoint, which means the room is cold). I'm sure I had trouble binding it in the first place... I think I'll reset it and re-bind it from scratch.

Edited by Jobbo on Thursday 1st February 14:36

[dmsims]

Rebinding an HR92

https://www.youtube.com/watch?v=_xWTZC5DjxM

[mr_fibuli]

I put in a Tado a month ago now - very happy with it so far. Geo fencing is working well (missing from Hive), and the temperature scheduling is great (sounds a bit random in Nest). I also like how it runs off AA batteries, so was a quick direct replacement for my old wall thermostat - no fancy colour screen needing mains power.

You can play Doom on a Honeywell though: https://motherboard.vice.com/en_us/article/pae887/...

[shady lee]

For those with wiser who want geofencing etc, they finally got round to using iftt

[Jobbo]

shady lee said:

For those with wiser who want geofencing etc, they finally got round to using iftt

I forgot to unsubscribe from their e-mails too

They also mention that it's £5 off the Wiser TRVs at Amazon, bringing them to the same regular price they're currently sold for at Screwfix, £39.99. Weren't they originally £34.99 at Screwfix though?

[shady lee]

Jobbo said:

forgot to unsubscribe from their e-mails too

They also mention that it's £5 off the Wiser TRVs at Amazon, bringing them to the same regular price they're currently sold for at Screwfix, £39.99. Weren't they originally £34.99 at Screwfix though?

Yeah £34.99 at screwfix... For the 2 weeks they were available

[eatontrifles]

shady lee said:

For those with wiser who want geofencing etc, they finally got round to using iftt

That isn't comparable to Tado's offering which modifies the target temperature the further (or closer) you are from home, and knows how long your home takes to reach the temperature and roughly how long it will take you to get home.

Having an IFTTT channel is useful, but in my experience it can be very slow to trigger (up to 15 minutes sometimes).

[shady lee]

eatontrifles said:

hat isn't comparable to Tado's offering which modifies the target temperature the further (or closer) you are from home, and knows how long your home takes to reach the temperature and roughly how long it will take you to get home.

Having an IFTTT channel is useful, but in my experience it can be very slow to trigger (up to 15 minutes sometimes).

No not at all, I may have got the terminology mixed up, geolocation is on/off if your in or out.

Geofencing is probably what tado does.

Either way wiser is st....(in my opinion lol)

[five5]

kapiteinlangzaam said:

After a couple of nights testing, I'm 99% certain putting my HR92s in 'full' mode has solved the issue with the boiler cycling randomly at night.

I tried this last night and I think it solved the problem too. I noticed this morning when the heating came on that the 'TRV noise' went on far about 30 seconds longer than it normally does. I suspect this setting will have a negative impact on the TRVs battery life (but batteries are cheaper than heating oil )

[mjb1]

KTF said:

As an aside, their Danfoss adaptor is a bit crap. You can’t tighten it enough to stop it moving slightly and if you overtighten it then the stat pops off when it puts pressure on the pin Once it’s on it’s fine but I would expect it to tighten up properly.

Edited by KTF on Friday 26th January 19:01

On that note, anyone have any recommendations for good, cheap mechanical TRVS? I only need the valve body, to attach my Tado TRVs to, so don't need/care about the quality of the head itself (but I do want some to refit in case I move house and take the Tado setup with me). It sounds like a good idea to avoid the Danfoss TRVs for this purpose? I was just going to buy some of the cheapest ones screwfix stock. I think my Tado TRVs are the vertical mounting ones, and there are a couple of plastic parts/adaptors in the box with them, so it'd be nice to have to get TRVs that work with the bits I have (otherwise I think I have to request alternative adaptors from Tado).

[shady lee]

mjb1 said:

On that note, anyone have any recommendations for good, cheap mechanical TRVS? I only need the valve body, to attach my Tado TRVs to, so don't need/care about the quality of the head itself (but I do want some to refit in case I move house and take the Tado setup with me). It sounds like a good idea to avoid the Danfoss TRVs for this purpose? I was just going to buy some of the cheapest ones screwfix stock. I think my Tado TRVs are the vertical mounting ones, and there are a couple of plastic parts/adaptors in the box with them, so it'd be nice to have to get TRVs that work with the bits I have (otherwise I think I have to request alternative adaptors from Tado).

I replumbed my whole house about 2 years ago with the cheaper screwfix ones, no issues at all.