Heat conduction oil boiler equipment is normal, no pressure after running system
Second, check in and out of the main boiler pressure gauge whether there is a pressure or differential pressure, if there is no pressure or pressure is too low, that heat conduction oil may have a problem, the main loop pump or system lack of heat conduction oil, check before the pump filter plugging, check the tank oil level high, see if it is short of oil.
Search the third, check the oil and the oil pressure gauge with thermal equipment whether there is a pressure difference, if the differential big jams with thermal equipment. You can check the thermal oil system according to these points, if there is a problem can call my company advisory.
For you say that there are several possible, first, first check the branches have direct valve closing valve or other do not have the right to switch valve is closed or the open, resulting in heat conduction oil directly without reach equipment return oil furnace system.
