Loosing Pressure in Combi

[hagan10]

Evening all,

hope me you can shed some light

I have recently had a baxi combi installed in replacement of a gravity fed system.

The he problem I have is that the boiler is loosing pressure to the error code around every 2-3 weeks. And always have to bleed one radiator.

Could there be be a leak in the system? I can't see anything anywhere. Could it be corrosion in the system?

Would you recommend using fernox leak sealer?

Thanks

lee

 

[rpm]

If I paid for something and it wasn`t right I would call the person I paid back to put it right.

 

[Gary59]

Hi

May have nothing to do with the boiler installer if you have a slight weep in your rad pipework.
With the old system it may have not been apparent, look for staining on ceilings, but if on ground floor under floorboards can be a real pain to find.

Run your fingers around each rad valve in turn and boiler connections as slight weep can be hard to see.

Gary

 

[rpm]

And the connection between the boiler losing pressure and having to bleed one radiator is?

 

[Gary59]

May be no connection at all, having to bleed a rad could be that its at the highest point in the system and collects any air, sludge in a rad can produce gas.

New boiler would suggest it is not (likely) at fault so very small leak most likely.

 

[Scott_D]

It's one of the problems that can occur when pressurising an old heating system. Ask the installer to come back and take a look, you will probably have to pay if it's a fault with your existing system.