Combi bolier screeching

[Reynoldinho]

Hi,

We moved into a new build last Dec and yesterday i bled the radiators throughout the house for the first time as they have been a bit 'hot and cold' in performance. There 12 in total and perhaps 8 had a decent amount of bleeding.

Once completed i checked the pressure, the red needle was at 1.5bar (it's two floors up) and the grey needle zero. They are still at those levels with the system off.

In the evening the radiators were not functioning despite numerous adjustments to the thermostat, then real joy at 5am when there was loud and continuous screeching from the boiler. I turned off the the system entirely. This morning i turned it back on and the after 5 seconds the screeching started again.

For info, the boiler is a Range Ideal Tribune HE.


Any ideas?

Thanks

 

[Robiow70]

Sound like a problem with the fan. You will need to Get a gas safe engineer in.

Happy new year

 

[denso13]

You need to re-pressurise the system. What boiler do you have? The Range Tribune is an unvented cylinder, not a boiler. //www.diynot.com/forums/plumbing/how-to-restore-the-pressure-in-a-sealed-heating-systems.38904/

 

[Reynoldinho]

You need to re-pressurise the system. What boiler do you have? The Range Tribune is an unvented cylinder, not a boiler. //www.diynot.com/forums/plumbing/how-to-restore-the-pressure-in-a-sealed-heating-systems.38904/

Thanks denso13, is this the case even though the red needle pressure gauge is at 1.5bar?

 

[Reynoldinho]

Yes, you are right a Range Ideal Tribune Unvented Hot Water cyclinder

 

[denso13]

Did you top the system up after bleeding the rads? What boiler is it?

 

[denso13]

If the gauge is like this it means it is at zero. The grey pointer is the pressure, the red one just records where the grey one was.

 

[Reynoldinho]

Ideal Logic Heat 15

No, i have not topped up the water. I need to regardless of the pressure i take it? How do i know by how much?

 

[Reynoldinho]

Yes, that's broadly how it looks

 

[denso13]

The grey pointer should be about 1 - 1.5 bar.

 

[Reynoldinho]

Thanks

There are three levers, the hot and cold water isolations and then a third, which i assume is the water valve.

The cyclinder guide does not detail this definitively

 

[DP]

OP, the red hand is a marker. If you put a screwdriver on the red Center, you will be able to move the red hand to your hearts content

Black hand is what you need to pay attention to
You have no water in the boiler. That is why your pump is screaching

 

[Reynoldinho]

Op, the red hand?

There is no red hand.

 

[denso13]

Red hand/red needle is just the same thing. Any luck finding a filling loop? You could post some pics of your system/boiler and it may help someone point it out.

 

[D_Hailsham]

There are three levers, the hot and cold water isolations and then a third, which i assume is the water valve.

The cylinder guide does not detail this definitively

Topping up the pressure is nothing to do with the hot water cylinder; you do it at the boiler.

It's all explained in the User Guide, page 4.