[EnergyPlus_Support] Plant temperatures are getting far too cold

["mariasole297" <mariasole297@xxxxxxxxx>]

Hi,
i'm tring to simulate the following heating and cooling system:

Groung heat exchanger+ heat pump+ heating/cooling floor

When I start the simulation E+ always returns this sever error.

 ** Severe  ** Plant temperatures are getting far too cold, check controls and relative loads and capacities
   **   ~~~   **  Environment=SENZA TITOLO, at Simulation time=05/08 19:16 - 19:19
   **   ~~~   ** PlantLoop Name (SupplySide)= CHW LOOP
   **   ~~~   ** PlantLoop Setpoint Temperature=6.7 {C}
   **   ~~~   ** PlantLoop Inlet Node (SupplySide) does not have a Setpoint.
   **   ~~~   ** PlantLoop Inlet Node (DemandSide) does not have a Setpoint.
   **   ~~~   ** PlantLoop Outlet Node (SupplySide) has a Setpoint.
   **   ~~~   ** PlantLoop Outlet Node (DemandSide) does not have a Setpoint.
   **   ~~~   ** PlantLoop Outlet Node (SupplySide) "CHW LOOP SUPPLY SIDE OUTLET" has temperature=-105.3 {C}
   **   ~~~   ** PlantLoop  Inlet Node (SupplySide) "CHW LOOP SUPPLY SIDE INLET" has temperature=7.1 {C}
   **   ~~~   ** PlantLoop Minimum Temperature=1.0 {C}
   **   ~~~   ** PlantLoop Maximum Temperature=98.0 {C}
   **   ~~~   ** PlantLoop Flow Request (SupplySide)=0.0 {kg/s}
   **   ~~~   ** PlantLoop Flow Request (DemandSide)=0.1 {kg/s}
   **   ~~~   ** PlantLoop Node (SupplySide) "CHW LOOP SUPPLY SIDE OUTLET" has mass flow rate =0.1 {kg/s}
   **   ~~~   ** PlantLoop PumpHeat (SupplySide)=3.4 {W}
   **   ~~~   ** PlantLoop PumpHeat (DemandSide)=0.0 {W}
   **   ~~~   ** PlantLoop Cooling Demand=218.9 {W}
   **   ~~~   ** PlantLoop Heating Demand=0.0 {W}
   **   ~~~   ** PlantLoop Demand not Dispatched=0.0 {W}
   **   ~~~   ** PlantLoop Unmet Demand=62323.8 {W}
   **   ~~~   ** PlantLoop Capacity=120000.0 {W}
   **   ~~~   ** PlantLoop Capacity (SupplySide)=120000.0 {W}
   **   ~~~   ** PlantLoop Capacity (DemandSide)=0.0 {W}
   **   ~~~   ** PlantLoop Operation Scheme=CHW LOOP OPERAZIONE
   **   ~~~   ** PlantLoop Operation Dispatched Load = 218.9 {W}
   **   ~~~   ** PlantLoop Operation Dispatched Load (SupplySide)= 218.9 {W}
   **   ~~~   ** PlantLoop Operation Dispatched Load (DemandSide)= 0.0 {W}
   **   ~~~   ** Branches on the Loop.


I've tried to check the GSHPSimple-GLHE in the ExampleFile and get some changes but it doesn't work... Any ideas???? 
Maria 



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