i have a problem with the boiler in my house which is about 26years old, the boiler stopped working , the time lights were out , so i changed the timer , it worked but the gas valve supply was not live! the supply is from an old round plug lead & socket which seems to have no live ! the wall stat has a supply, i plugged another kettle lead to the gas valve & the boiler lights up but does'nt stay on long( i thought , ah pump not workin , but there does'nt seem to be a pump in the system,oh yer the central heating is downstairs only ) the water is gettin hot but the radiators are not heating at all, ( i should say i am c&g elec also its a concord wrs boiler with a drayton control for the tank stat & it only has ch valve which seems to be in the open position. can u please help me ? can these old systems run with no pump ? if no where is it ? p.s. i've checked attic no pump!