Replaced radiator now boiler won't start

[Bobbya82]

Have replaced a radiator that I removed for decorating and now the boiler won't start. Tried bleeding all the radiators for hours air comes out and stops then do the same on another one then back to the other one. Did manage to get boiler running for a couple of minutes by turning up the numbered dial on it, only lasted a few mins. Any help would be great , thanks.

 

[Charnwood]

What boiler?
What type of system?

 

[Agile]

Did you repressure to 1,5 bar?

Tony

 

[twgas]

Cold feed blocked.

 

[Bobbya82]

Thanks, how do I check the cold water feed? The boiler is an old baxi and it's just a standard system with cylinder an tank in the loft. Pump is now making all sorts of noises so no doubt that's probably knackered now.

 

[weargas]

or ball valve stuck up?

 

[Bobbya82]

Going to have get someone in! Have been bleeding radiators on and off for hours now.

 

[HERTS P&D]

Have you been in the loft to see if there is water in the expansion tank?

Is the float valve working?

If so then blocked feed as mentioned.

Andy

 

[algas]

Is the pump air locked ?

 

[Bobbya82]

I can undo the silver thing on the pump all the off but no air comes out. Thanks again everyone.

 

[Bobbya82]

Haven't been in the loft as yet, I did manage to get most of the radiators upstairs and at least one working this morning before boiler gave up. Not sure if that means anything. Constantly air when bleeding radiators on and off. Felt like I have spent hours doing it. Thanks.

 

[kbdiy]

You need to follow the advice already given and check the header tank rather than wasting time trying to bleed rads.

If the tank is empty then the float valve needs freeing/replacing and if the tank is full then you have a blocked cold feed which will need to be cleared/removed/replaced before you can fill the system and bleed the rads.

 

[Bobbya82]

It was a blocked cold feed, the guy had to cut out and redo pipework so wouldnt have got involved un that but thanks for you help guys.

 

[seasickstevie]

What caused the feed to be blocked?

 

[HERTS P&D]

Glad it's all working now, how much did it cost to get fixed?

Andy