Replacing my broken Thermostat

System

My heating bill is around £450 a year. I'm into tech and home automation and have 4 Amazon Echos around the house to control all manner of things. Tado fits into that scenario perfectly and can be controlled by voice through the Echos should I wish to make a manual change to the thermostat. I suppose there is a case for standing still with technology - I could get up and control my TV and media system using buttons on the TV and set top boxes, I could wash my clothes by hand, I could even move off-grid - but I am keen to use and explore technology and £199 (or less with discount) is, IMO, a small price to pay for a connected heating system. Horses for courses.

[Deleted User]

@sccf
So it is a hobby really. Buying new tech from companies who, for now, offer services which they can remove when ever they want to. Or others can hack and cause you big issues.
At least, use technology which you have 100% control over. Have a look at http://tech.scargill.net/ to see what is possible and still retain 100% control.
BTW don't assume that people on forums who disagree with you on technology are luddites. I probably have more real world experience of high tech at the leading edge than most posters in this forum. But I offer assistance that meets the OP's requirements not my own.

System

Point taken. I am well aware that services can be withdrawn at any time, and have been bitten several times before, but I would just go out an buy an alternative. I rather like having a good excuse to buy a new piece of tech! Hacking of smart thermostats is not really on my radar - I don't wear a tinfoil hat and if someone somewhere wanted to play with my thermostat remotely and can get through my firewall then they have way too much time on their hands for no reward. I did have a look at the site you linked to but could find nothing which would do the same job without reinventing the wheel - unless I have missed something.

astrantia59

Sorry to hijack the thread but..
I have a Honeywell ST9400C 7 day boiler programmer with two problems. Firstly the clock keeps running slow, currently by about 10 minutes and also when I try to press the button to 'change mode' -auto /override once etc it is either sticking or not responding.
It's about 7 years old. Is it just time for a new programmer?
thanks for any help/advice

System

scgf wrote: »

Point taken. I am well aware that services can be withdrawn at any time, and have been bitten several times before, but I would just go out an buy an alternative. I rather like having a good excuse to buy a new piece of tech! Hacking of smart thermostats is not really on my radar - I don't wear a tinfoil hat and if someone somewhere wanted to play with my thermostat remotely and can get through my firewall then they have way too much time on their hands for no reward. I did have a look at the site you linked to but could find nothing which would do the same job without reinventing the wheel - unless I have missed something.

A year ago owners of Nest found to their detriment that a firmware update caused major problem:

https://www.nytimes.com/2016/01/14/fashion/nest-thermostat-glitch-battery-dies-software-freeze.html?_r=0

System

It's very easy to revert back to my old Vaillant wireless thermostat - replace one link in the boiler and pop on the plug-in Vaillant wireless control panel. Job done in 5 minutes.

astrantia59

Thanks for your quick response and help!

reeac

We have a 20 year old Honeywell wall thermostat and see no need whatsoever to change it for a wireless or any other modern one. If we go away then give it a quick twist back from 20C to maybe 12C if it's Winter or switch off at the programmer if really keen. Keep it simple ....and I'm a retired physicist.

Spike34

Ok I got the new thermostat today. I wired it up but it doesnt turn off the boiler when its meant to.
this is how the old thermostat was wired. (Site wont let me post links so change xxx for www)
xxx.montel-css.co.uk/SupOther/Resources/honeywellt6360wi.jpeg

and this is how the new one needs wiring.
xxx.jago24.co.uk/media/product/8be/room-thermostat-rmtms01-8db.jpg

I take it have got the wrong thermostat.

glennevis

I thought this was supposed to be a money saving forum?

What's wrong with replacing a wired mains thermostat with a similar one? As the physicist says, it's not rocket science.

I would go for a Danfoss RMT-230 because you can get one for a tenner or so on eBay.

Did this on my CH system without a problem. Don't forget to isolate the electrical supply before working on it and if in any doubt get a competent electrician to do it.