Last night I switch my heating system from Timed to constant and Hot Water only to Hot Water and Central Heating. I have a Back Boiler and a Hot Water tank and when I pressed it to constant the back boiler started up but my Radiators wouldn't warm up. I made sure the radiators were bled but still nothing. Please help!!

Kat, December 2008

yep, its a pump alright!

gasmandave, December 2008

check your pump is working you can test this by undoing the plug eith screw driver right in the middle of pump.

chris, December 2008