Hi,I have just tried turning on my boiler,which has been off for the last six months while the property has been empty.The pilot won\\\'t light when I turn a hot tap on.I can hear a clicking sound & a pumping sound,but no pilot light.The timer is set to constant & there are no lights lit on the boiler.It\\\'s as if there\\\'s no gas getting to the boiler.I would be very gratefull for any help with this problem.Many thanks.