Faulty Thermostat / Central Heating?

Question

Hi all,Moved into a new Barratt home about 18 months ago and i believe that the Central Heating has never worked correctly.  Only gotten round to looking into it now though.Basically even if the Thermostat is set at, say, 10 degrees, the house still gets very hot.  Ie, i can still here the boiler boiling away even when a separate thermometer next to the thermostat is reading way above 10 degrees (around 20-22 usually).When we set the thermostat at around 20-ish, the house doesn't seem to get warm at all.The thermostat does 'click' though (very quietly) at around the correct temperature.As you can imagine, this is very frustrating and is probably costing us a lot more in gas than it should!I am going to contact Barratt to come and look at it, but some general thoughts / advice would be most welcome.Thanks in advance.David Gouge

john · Accepted Answer

Most likely that the wiring to the boiler or within the boiler is incorrect. Maybe a linking wire has not been removed.John

John Cartmell · Answer

Are you saying that:1. the thermostat works correctly - ie detects the correct temperature, but2. switches the heating on when the room is above the set temperature and offwhen it's below the set temperature?

David Gouge · Answer

Yes to 1, but i wish it was as consistent as you say in 2. If that was the case the boiler wouldn't switch off until the end of the program i imagine.

Generally it just doesn't 'seem' right. At our old house if you set the thermostat down low, that's what you'd get.

Anyway, cheers for the reply,

Christian McArdle · Answer

Sounds like the NO and NC terminals have been reversed on the stat, then!Christian.

David Gouge · Answer

So if it *is* that, would that be easy for a n00b like me to fix instead of going to the hassle of getting Barratts in?

Christian McArdle · Answer

If it does turn out to be that, then anyone competent in wiring electricalfittings could fix it. I can't possibly comment on your competence from theinformation available to me...Christian.

Ed Sirett · Answer

Sounds like the thermostat is wired up round the wrong way.However you better start by listing out all the kit you have and we cantake it from there.

Faulty Thermostat / Central Heating?

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