fiestakingfisher

Woke up this morning and the central heating/hot water has come on as normal (both lights are lit on the controls, but then thought it was cold so felt the radiator(all are freezing cold)
hot water and heating are seperate on the controller.. when both are on the pump is working and the boiler downstairs fires up etc with the little flame.. but if you turn the hot water off and leave the heating on, all is silent and the boiler does nothing.. if you turn the thermostat thing on the boiler up it clicks like it wants to do something but doesnt fire up.. also i can turn the room thermostat to 30 and still nothing... help please