Thermostat

[Archive-8]

After a power cut a couple of days ago my heating hasn't been working. Found the thermostat had blown again.

So I have replaced it with a new one, since owning this house I have had to replace 2 other stats.

So can I replace this:-


For a digital one?

 

[Archived-1]

It shouldn't be a problem Chris, when buying one just make sure its analogue wiring compatible.

 

[Archive-8]

It shouldn't be a problem Chris, when buying one just make sure its analogue wiring compatible.

Thanks I will try and get one.

 

[Terryl]

I replaced mine last year, the new one has a WIFI connection, I can turn the heat/AC on, or check the house temp from my Iphone. (or laptop)

It's a Honywell RTH6580, it may be a bit costly but it's cool.

 

[Channel Hopper]

There should be a bypass that allows the
boiler to function without the thermostat.

 

[Archive-8]

There should be a bypass that allows the
boiler to function without the thermostat.

Do you mean another wire?

 

[Archived-1]

I am quite sure if you joined the blue and brown wire together that would bypass it, not another Wire, i think CH is on about a over ride switch some systems have them some don't.

 

[Lazarus]

I thought he might have been referring to the bypass position (Manual Lever) on the motorised valve

 

[Archived-1]

Turning a lever would only turn something off and make it not work again until you turned it back on, only really useful if going on holiday.

 

[Lazarus]

No, it's a design feature of 3 Port Zone valves allowing the Boiler to fire and circulate water in the event of control failures and also to facilitate filling. I've resorted to it myself recently!

It sets the valve to the mid-position and also bypasses timers/thermostats etc.

 

[Archived-1]

True but like i say it will stop something working, i was speaking on topic about the fault in question not going into boiler systems in general.

 

[Lazarus]

Failure of the room thermostat is precisely one of the key failures that the bypass caters for - enables you to get the boiler going and the house warm whilst awaiting/fitting a replacement thermostat. Takes a mere couple of seconds to activate. One cannot possibly risk a frozen wife, even for a minute!

 

[Archived-1]

True that's much more of an older system/still used on larger homes, i don't know what system Chris is using, i was guessing he is using a combo boiler with a few radiators on a single system, but like i say if he joins the blue and brown wire together it will by pass it and work if he doesn't have a by pass switch/valve/whatever.

 

[Lazarus]

I guess so - we're still a bit in the dark here (Lighting bypass?!)

 

[Archive-8]

The boiler is a Worcester greenstar 24i junior combi MK IV

 

[Archived-1]

Do you have the heating and hot water working with this problem Chris ? if no join the blue and the brown wire together and it will work.

If all is working with the problem, go out and get an analogue to digital wiring friendly one of your choice.

 

[Archive-8]

Yes hot water is working ok :-) it was a power surge that caused the thermostat to pack up.

 

[Vipersan]

So ..resurrecting this thread ..
I strongly suspect my wired analogue room thermostat is playing up ...
I could just replace it with similar ..but am considering an upgrade to a wireless model ...
Which presumably would need a seperate mains supply close to the boiler ..
relatively easy to achieve .
Now to the transmitter which is presumeably battery powered ..
I'm considering the Siemens RDH10RF..
but a couple of questions first.
Is anyone using this unit ?
How often do the batteries require changing ?
..and most importantly ...
would it work between rooms with brick walls ...minimum 2 possibly 3 ..as I haven't decided on transmitter/thermostat location yet ..?
rgds
VS

 

[2cvbloke]

Wireless thermostats are great...



And yes, that is the 'stat in this house, it works best (temperature stability-wise) oddly enough in the kitchen next to the boiler atop its receiver...

 

[Vipersan]

Wireless thermostats are great...

View attachment 103981

And yes, that is the 'stat in this house, it works best (temperature stability-wise) oddly enough in the kitchen next to the boiler atop its receiver...

..from your reply I'm guessing ...errrr..
not a good idea then..