Central heating/water heating.

[Smudger82]

Hi could anyone help? I back flushed my radiators to try and clear a blockage of some sort, and now when i turn water heating on or heating my hot water pump at my boiler is making a high pitch screaching sound, what does this mean be grateful if anyone could help?
Pete.

 

[kevplumb]

View media item 667
undo the screw and bleed the pump have a cloth handy

 

[bengasman]

I back flushed my radiators to try and clear a blockage of some sort,...

Back filling the system to dislodge a blockage, is like moving a nail from one side of the drive to the other; you need to clean the system.

 

[Smudger82]

Tried that mate thanks nothing came out, still screaching help?

 

[Smudger82]

How do i clean the system?

 

[kevplumb]

Tried that mate thanks nothing came out, still screaching help?

if nothing came out there is nothing in

it's running dry

 

[Smudger82]

Running dry? what can i do? sorry to keep on at you its just i need help, i even had a local plumber to look he didnt help lol.

 

[bengasman]

Was your plumber a RGI? If so he was not very good.
Look through FAQ, CH FAQ and wiki, various things about corroded systems and what to do about it.

To get water back in the pump, you must manually open the motorised valves, and bleed the rads.

If you have somebody that can help, take the screw out of the pump while you do it.