"Dave Gibson" wrote in message
...

"Ch. Rajinder Nijjhar Jatt" wrote in
message
news:k6bqc.559$JZ4.315@newsfe6-win...
Hi,

Today I drained the central heating system and the water flow was very
weak a baby ****ing out. I did open the bleeding valves but still very
slow.

Up in the loft tank is still full and I can't understand why water did
not flow fast as it did some years ago.

Do you think the central heating is clogged with scales/sludge please?

What should I do?

Rajinder




Check that any motorised valves on the system are open when you drain the
system. I once wasted several hours before discovering that one.

Adam