Hi, my little girl left a cold water tap running in a sink without me realising until problem with water supply. The tank in attic had emptied. We turned tap off and tank began filling again. Cold water pressure is fine downstairs but slowed to a trickle in bathroom, hot water is fine. I have no idea what to check or look for, to resolve problem and can't afford to call out a plumber. Any ideas? I may have a 2nd smaller tank up there too but have only looked at big tank with a large float in it. Thanks for taking the time to read :-)

Lori, November 2012

leaving the cold water running shouldn't cause any problems, this just runs off the main supply. The large cold water tank in the loft feeds the hot water cylinder. The small cold water tank feeds the radiator system.

http://www.ultimatehandyman.co.uk/central-heating.php

I would guess there is an airlock, hopefully just running the water should eventually solve this problem.

Simon, November 2012