TG is problem could be a few things. ! If automatic values fitted check these. 2 Check water heating pump is working. 3. Dirt within heating system. These would be my first checks.
Chris Plumbing @ Heating NI
January 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.