Feel silly but question about my thermostat.

[MilkyNoway]

My house is freezing. Housing association eith a 20 year old boiler they will not replace as ling as they can fixnit when it breaks (which it does regularly)

This is my thermostat, when i turn it, its the small number on the right that changes.

I need to put it to 25 to even feel any warmth. Is that right? If I put it on 25 the big number doesn't go to 25.

I feel daft not knowing how it works,

Do you have a button that says run,start or OK?

So the number you set it to on the right is what temperature you want to get to. The big number is the current temperature. Is the boiler firing up and warming the radiators?

The radiators come on but they don't get hot, just warm and the big number never reaches what its set as on the right.

Do the radiators need 'bleeding'? Using a radiator key to let any air bubbles out? Can you googke the name of thermostat/boiler and find the usee manual on line?

When you turn the dial on the right to the required temperature is there another button that you have to press to set it to that temperature. On my thermostat I have to turn the dial for temperature required then press a green arrow to actually set it.

The big number is the current temperature in your house, so 13c.

Turning it to 25c will trigger your heating to come on but it would take hours for our house to actually reach that.

The way you have it set in picture at 21.5 means it will turn off once the house reaches 21.5. I say house, the part of the house where the thermostat is.

We moved ours from a draughty hallway as it could never achieve that temperature so was just wasting gas.

Ours is set to 18 to 19c which is comfortable if dressed in layers or have a blanket on us while watching TV. I'd like it warmer but the bills are then too much.

Some things that help is ensuring doors are kept closed and curtains drawn once it goes dark. But it is important to let some fresh air in at points to stop damp.

You could try googling the thermostat make, for instructions to see if you can set it on a timer. That way it could come on in the mornings so it takes the chill off before you get up.

If the radiators don't get hot call in another repair to your HA. They will eventually replace the boiler when the repairs are booked longer economical. Also have the engineer walk you through your thermostat and programmer when they are there.

Just saw you other post about radiators only being warm not hot. On some boilers you can alter the flow temperature, which is how hot the water is going to the raidiator. Maybe this has been set too low. Google your boiler make and model to see how you check this.

The big number in the middle is the current temperature reading for the room the thermostat is in.

The small number on the bottom right is the temperature your thermostat is set to - the boiler is trying to heat your home to that temperature. When the room reaches that temperature, the big number in the middle will say the same number.

Bleed your radiators, keep your doors shut to trap heat and keep windows covered with clear sticky plastic (or cling film) of not double glazed!

Yes its in a very cold hallway, its a 3 storey house with the hallway open all the way to the top, and only 1 radiator on bottom floor, so its impossible really to keep the hallway warm.

I bought a key and bled the radiators.

The rooms on the top floor (3rd) are really cold.

I will see if i can download a manual

I second advice of pp and get the HA to send an engineer round. At 20 years old it may well ned replacing sooner rather than later especially as it doesn't seem to be the correct size to warm the house properly.

I believe this is the manual

www.gentoogroup.com/media/uwjhpw1m/neomitis-rt7rfplus-instruction-manual.pdf

I'd look at the boiler. Can you increase the flow temperature there? ie get hotter water going through the radiators.
Is the boiler pressure sufficient?
Bleeding them all is a good shout.
Are the valves open on both sides of the radiators?

I think you need to look at the boiler temperature too.
My DD's house was like that when she first moved in. The boiler was turned so low the radiators never got hot enough to heat the rooms.

Is the boiler running continuously when you set the temperature to 25 or is it cutting off? You should have a light on the boiler showing that the flame is on. I agree with PP that it might be because the radiator temperature at the boiler is set on too low. I have a 20 year old boiler as well and the temperature has to be set really high for it to warm the rooms properly. Look at the control panel on the boiler and see if you can find the temperature adjuster.

is the water supply to the system switched on?
i dont know how you check but the heating engineers can. it’ll be in the loft.

my mum had a similar problem. there was too much air in the system because the water was meant to top up the radiators or somethimg, but the water to the heating switch had been switched off for repairs and never back on again. the house was sooo cold. bleeding radiators didn't help. only an engineers visits sorted it out.