no pressure on boiler pls help

[ljgarrett]

just fitted a new boiler ,a glow worm 24ci.the problem being when its turned on it trys to fire for about 4 seconds then flashes o.o bar and the red light flashes.thers no hot water feed on it yet ,but its supposed to be running 2 rads.can someone pls help,thanks

 

[Billy Bob Bob]

so the hots not connected that may be the problem have you tryed to re-pressurise the glowshed sorry worm

 

[ljgarrett]

yes did try to repressurise the system but no movement.so if i connect the hot you belive it will pressurise the system.i didnt wont to because the hot at the moment is running off a water only boiler.but maybe ill have too.thanks

 

[Billy Bob Bob]

possibly,is the loop live?if the cold is turned off because of the dhw situation you may have no water going in

 

[ljgarrett]

no the loop wasnt live,but as soon as the boiler is switched on there is no pressure at all.i know what im doing tomorrow! (hotwater)thanks