Replacing my broken Thermostat

Rubidium

Spike34 wrote: »

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.

How you have wired the new stat?

Honeywell 1 Live to new stat X?

Honeywell 2 Neutral to new stat X?

Honeywell 3 Switched L to new stat X?

The new stat should work fine if it is wired correctly.

Did you prove that the Honeywell stat was actually defective because if it was not then a new stat will not fix the problem?

CashStrapped

glennevis wrote: »

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........

It is not as simple as that.

The basic thermostats (analogue dial ones), although reliable, detect temperature changes using a bi-metallic strip. These types of thermostat have a large margin of error when responding to temperature changes due to the material used. This can be as much as + or - 5 degrees, especially for older ones (they get worse over time).

So, while they work as thermostat, they are very inaccurate.

A digital thermostat is far more accurate.

Furthermore, the reason why I recommend a wireless thermostat is that traditional thermostats can often be poorly sited. In a hallway, next to an external door. Too near a radiator, in a hot kitchen.

A poorly placed thermostat can result in a central heating system which is a pain to manage and can add to cost due to it being run inefficiently.

A wireless thermostat can be placed in either a location which gives a good average temperature to the whole house, or situated in the room you are in. Meaning the house is always heated to the exact temperature you wish.

CashStrapped

Spike34 wrote: »

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.

You seem to have gone for a random brand thermostat, the quality of which may be questionable. Personally I would stick with tried and tested brands which have a good track record.

http://www.plumbworld.co.uk/honeywell-dt90e-wired-digital-761-1362?utm_source=GoogleBase&utm_medium=GB&utm_campaign=GoogleBase&gclid=CPPmmf3ll9ICFeYK0wodXYQIEA

That is a basic digital wired thermostat for the same cost made by honeywell.

The wireless one I linked to on the last page is also a honeywell but is re-branded for plumbcenter. So again, a good quality brand but much cheaper than the honeywell branded version. It is a basic wireless thermostat but still made by a quality manufacturer.

http://www.plumbcenter.co.uk/product/center-radio-frequency-programmable-room-thermostat/

I also linked to a step by step instruction.

Good luck

Spike34

How you have wired the new stat?

Honeywell 1 Live to new stat X?

Honeywell 2 Neutral to new stat X?

Honeywell 3 Switched L to new stat X?

The new stat should work fine if it is wired correctly.

Did you prove that the Honeywell stat was actually defective because if it was not then a new stat will not fix the problem?

Honeywell 1 to new Live
Honeywell 2 to new Neutral
Honeywell 3 to new L1

It was the stat that was faulty as the deal wouldn't click.