Underground water leak

[icemen]

Just another couple of question's if you guys can help.
Will the leak on an underground pipe cause the radiators not to kick in? I try putting them on but the boiler shows the radiator symbol but doesnt fire up.
Also wil the underground leak not cause the pressure to drop?
Thanks

 

[icemen]

Just another couple of question's if you guys can help.
Will the leak on an underground pipe cause the radiators not to kick in? I try putting them on but the boiler shows the radiator symbol but doesnt fire up.
Also wil the underground leak not cause the pressure to drop?
Thanks

Anyone help with above questions?