Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following warnings every time:

Error file results:

 Program Version,EnergyPlus, Version 9.0.1-bb7ca4f0da, YMD=2019.01.18 18:50,
   ************* Beginning Zone Sizing Calculations
   ** Warning ** ProcessScheduleInput: Schedule:Constant="ALWAYS ON DISCRETE", Blank Schedule Type Limits Name input -- will not be validated.
   ** Warning ** ProcessScheduleInput: Schedule:Constant="ALWAYS OFF DISCRETE", Blank Schedule Type Limits Name input -- will not be validated.
   ** Warning ** ProcessScheduleInput: Schedule:Constant="ALWAYS ON CONTINUOUS", Blank Schedule Type Limits Name input -- will not be validated.
   ** Warning ** GetHTSurfaceData: Surfaces with interface to Ground found but no "Ground Temperatures" were input.
   **   ~~~   ** Found first in surface=SURFACE 16
   **   ~~~   ** Defaults, constant throughout the year of (18.0) will be used.
   ** Warning ** CheckUsedConstructions: There are 1 nominally unused constructions in input.
   **   ~~~   ** For explicit details on each unused construction, use Output:Diagnostics,DisplayExtraWarnings;
   ** Warning ** Calculated design heating load for zone=THERMAL ZONE 4 is zero.
   **   ~~~   ** Check Sizing:Zone and ZoneControl:Thermostat inputs.
   ** Warning ** Calculated design heating load for zone=THERMAL ZONE 8 is zero.
   **   ~~~   ** Check Sizing:Zone and ZoneControl:Thermostat inputs.
   ************* Beginning Plant Sizing Calculations
   ** Warning ** GetElectricEIRChillerInput: Chiller:Electric:EIR="CHILLER - AIR COOLED"
   **   ~~~   ** Adding OutdoorAir:Node=CHILLER - AIR COOLED INLET NODE FOR CONDENSER
   ** Warning ** GetElectricEIRChillerInput: Chiller:Electric:EIR="CHILLER - AIR COOLED"
   **   ~~~   ** Energy input ratio as a function of temperature curve output is not equal to 1.0 (+ or - 10%) at reference conditions.
   **   ~~~   ** Curve output at reference conditions = 0.850
   ** Warning ** Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr
   ************* Testing Individual Branch Integrity
   ************* All Branches passed integrity testing
   ************* Testing Individual Supply Air Path Integrity
   ************* All Supply Air Paths passed integrity testing
   ************* Testing Individual Return Air Path Integrity
   ************* All Return Air Paths passed integrity testing
   ************* No node connection errors were found.
   ************* Beginning Simulation
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 1]
   **   ~~~   ** Surface [SURFACE 28] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 33.33
   **   ~~~   ** Zone dew-point temperature + safety delta T= 33.79
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 00:00 - 00:10
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 6]
   **   ~~~   ** Surface [SURFACE 49] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 32.67
   **   ~~~   ** Zone dew-point temperature + safety delta T= 38.23
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 00:00 - 00:10
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 7]
   **   ~~~   ** Surface [SURFACE 42] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 33.01
   **   ~~~   ** Zone dew-point temperature + safety delta T= 35.55
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 00:00 - 00:10
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
   **   ~~~   **  Routine=CorrectZoneHumRat, Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 14:20 - 14:30
   **   ~~~   **  Input Temperature=200.11
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 5]
   **   ~~~   ** Surface [SURFACE 35] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 28.09
   **   ~~~   ** Zone dew-point temperature + safety delta T= 28.16
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS ENTH=>MDB, at Simulation time=07/21 15:30 - 15:40
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-ELECTRICITY" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-DISTILLATE OIL" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-RESIDUAL OIL" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-NATURAL GAS" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-COAL" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ************* Simulation Error Summary *************
   ************* There are 3 unused schedules in input.
   ************* There are 3 unused week schedules in input.
   ************* There are 6 unused day schedules in input.
   ************* Use Output:Diagnostics,DisplayUnusedSchedules; to see them.
   *************
   ************* ===== Recurring Error Summary =====
   ************* The following recurring error messages occurred.
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 1] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 53532 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=35.882518 C  Min=25.368306 C
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 6] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 124007 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=37.290586 C  Min=21.089111 C
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 7] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 83808 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=36.035267 C  Min=24.842032 C
   *************
   *************  ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
   *************  **   ~~~   **   This error occurred 419 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=237.325226 C  Min=200.115784 C
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 5] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 110 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=27.4445 C  Min=27.085091 C
   *************
   *************
   ************* ===== Final Error Summary =====
   ************* The following error categories occurred.  Consider correcting or noting.
   ************* Nominally Unused Constructions
   ************* ..The nominally unused constructions warning is provided to alert you to potential conditions that can cause
   ************* ..extra time during simulation. Each construction is calculated by the algorithm indicated in the HeatBalanceAlgorithm
   ************* ..object. You may remove the constructions indicated (when you use the DisplayExtraWarnings option).
   *************
   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 7 Warning; 0 Severe Errors.
   ************* EnergyPlus Completed Successfully-- 261891 Warning; 0 Severe Errors; Elapsed Time=00hr 00min 48.82sec

I have already seen these posts:

1. https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/
2. https://unmethours.com/question/17175/calculated-design-cooling-load-is-zero/
3. https://unmethours.com/question/9399/energyplus-design-cooling-load-is-zero/
4. https://unmethours.com/question/23927/many-unmet-cooling-hours-with-radiant-floor-with-doas-possibly-due-to-condensation-shutoff/

but I couldn't solve my warnings. Could somebody help me please?

The major problem is when I try to export my results to .csv I get "0" Ideal Loads so I can't compare anything. The measure that I use to export to .csv file is:

OpenStudio Measures

• AddOutputVariable with variable name Zone Air System Sensible Heating Energy
• AddOutputVariable 1 with variable name Zone Air System Sensible Cooling Energy

Reporting Measures

• ExportOutputVariabletoCSV with variable name Zone Air System Sensible Heating Energy
• ExportOutputVariabletoCSV 1 with variable name Zone Air System Sensible Cooling Energy

I'm attaching my updated .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/wnc6z4uy8084bcc/radiant_model.zip/file

Thank's in advance!

Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following warnings error every time:

 Program Version,EnergyPlus, Version 9.0.1-bb7ca4f0da, YMD=2019.01.18 18:50,
   ************* Beginning Zone Sizing Calculations
   ** Warning ** ProcessScheduleInput: Schedule:Constant="ALWAYS ON DISCRETE", Blank Schedule Type Limits Name input -- will not be validated.
   ** Warning ** ProcessScheduleInput: Schedule:Constant="ALWAYS OFF DISCRETE", Blank Schedule Type Limits Name input -- will not be validated.
   ** Warning ** ProcessScheduleInput: Schedule:Constant="ALWAYS ON CONTINUOUS", Blank Schedule Type Limits Name input -- will not be validated.
   ** Warning ** GetHTSurfaceData: Surfaces with interface ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 1
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 2
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 3
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 4
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 5
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 6
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 7
   **  Fatal  ** GetLowTempRadiantSystem: Errors found in input. Preceding conditions cause termination.
   ...Summary of Errors that led to Ground found but no "Ground Temperatures" were input.
   **   ~~~   ** Found first in surface=SURFACE 16
   **   ~~~   ** Defaults, constant throughout the year of (18.0) will be used.
   ** Warning ** CheckUsedConstructions: There are 1 nominally unused constructions in input.
   **   ~~~   ** For explicit details on each unused construction, use Output:Diagnostics,DisplayExtraWarnings;
   ** Warning ** Calculated design heating load for zone=THERMAL ZONE 4 is zero.
   **   ~~~   ** Check Sizing:Zone and ZoneControl:Thermostat inputs.
   ** Warning ** Calculated design heating load for zone=THERMAL ZONE 8 is zero.
   **   ~~~   ** Check Sizing:Zone and ZoneControl:Thermostat inputs.
   ************* Beginning Plant Sizing Calculations
   ** Warning ** GetElectricEIRChillerInput: Chiller:Electric:EIR="CHILLER - AIR COOLED"
   **   ~~~   ** Adding OutdoorAir:Node=CHILLER - AIR COOLED INLET NODE FOR CONDENSER
   ** Warning ** GetElectricEIRChillerInput: Chiller:Electric:EIR="CHILLER - AIR COOLED"
   **   ~~~   ** Energy input ratio as a function of temperature curve output is not equal to 1.0 (+ or - 10%) at reference conditions.
   **   ~~~   ** Curve output at reference conditions = 0.850
   ** Warning ** Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr
   ************* Testing Individual Branch Integrity
   ************* All Branches passed integrity testing
   ************* Testing Individual Supply Air Path Integrity
   ************* All Supply Air Paths passed integrity testing
   ************* Testing Individual Return Air Path Integrity
   ************* All Return Air Paths passed integrity testing
   ************* No node connection errors were found.
   ************* Beginning Simulation
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 1]
   **   ~~~   ** Surface [SURFACE 28] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 33.33
   **   ~~~   ** Zone dew-point temperature + safety delta T= 33.79
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 00:00 - 00:10
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 6]
   **   ~~~   ** Surface [SURFACE 49] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 32.67
   **   ~~~   ** Zone dew-point temperature + safety delta T= 38.23
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 00:00 - 00:10
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 7]
   **   ~~~   ** Surface [SURFACE 42] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 33.01
   **   ~~~   ** Zone dew-point temperature + safety delta T= 35.55
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 00:00 - 00:10
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
   **   ~~~   **  Routine=CorrectZoneHumRat, Environment=SOUDA/KHANIA ANN CLG .4% CONDNS DB=>MWB, at Simulation time=07/21 14:20 - 14:30
   **   ~~~   **  Input Temperature=200.11
   ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 5]
   **   ~~~   ** Surface [SURFACE 35] temperature below dew-point temperature--potential for condensation exists
   **   ~~~   ** Flow to the radiant system will be shut-off to avoid condensation
   **   ~~~   ** Predicted radiant system surface temperature = 28.09
   **   ~~~   ** Zone dew-point temperature + safety delta T= 28.16
   **   ~~~   **  Environment=SOUDA/KHANIA ANN CLG .4% CONDNS ENTH=>MDB, at Simulation time=07/21 15:30 - 15:40
   **   ~~~   ** Note that a 1.0000 C safety was chosen in the input for the shut-off criteria
   **   ~~~   ** Note also that this affects all surfaces that are part of this radiant system
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-ELECTRICITY" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-DISTILLATE OIL" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-RESIDUAL OIL" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-NATURAL GAS" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ** Warning ** The resource referenced by LifeCycleCost:UsePriceEscalation= "U.S. AVG  COMMERCIAL-COAL" has no energy cost. 
   **   ~~~   ** ... It is likely that the wrong resource is used. The resource should match the meter used in Utility:Tariff.
   ************* Simulation Error Summary *************
   ************* There are 3 unused schedules in input.
   ************* There are 3 unused week schedules in input.
   ************* There are 6 unused day schedules in input.
   ************* Use Output:Diagnostics,DisplayUnusedSchedules; to see them.
   *************
   ************* ===== Recurring Error Summary =====
   ************* The following recurring program termination:
   ..... Reference severe error messages occurred.
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 1] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 53532 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=35.882518 C  Min=25.368306 C
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 6] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 124007 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=37.290586 C  Min=21.089111 C
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 7] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 83808 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=36.035267 C  Min=24.842032 C
   *************
   *************  ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
   *************  **   ~~~   **   This error occurred 419 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=237.325226 C  Min=200.115784 C
   *************
   *************  ** Warning ** ZoneHVAC:LowTemperatureRadiant:VariableFlow [LOW TEMP RADIANT VAR FLOW 5] condensation shut-off occurrence continues.
   *************  **   ~~~   **   This error occurred 110 total times;
   *************  **   ~~~   **   during Warmup 0 times;
   *************  **   ~~~   **   during Sizing 0 times.
   *************  **   ~~~   **   Max=27.4445 C  Min=27.085091 C
   *************
   *************
   ************* ===== Final Error Summary =====
   ************* The following error categories occurred.  Consider correcting or noting.
   ************* Nominally Unused Constructions
   ************* ..The nominally unused constructions warning is provided to alert you to potential conditions that can cause
   ************* ..extra time during simulation. Each construction is calculated by the algorithm indicated in the HeatBalanceAlgorithm
   ************* ..object. You may remove the constructions indicated (when you use the DisplayExtraWarnings option).
   *************
   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 7 Warning; 0 Severe Errors.
   ************* EnergyPlus Completed Successfully-- 261891 Warning; 0 Severe Errors; Elapsed Time=00hr 00min 48.82sec

count=8
   ..... Last severe error=Hydronic radiant systems may not be autosized without specification of nodes or schedules.

I have already seen these posts:

1. https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/
2. https://unmethours.com/question/17175/calculated-design-cooling-load-is-zero/
3. https://unmethours.com/question/9399/energyplus-design-cooling-load-is-zero/
4. https://unmethours.com/question/23927/many-unmet-cooling-hours-with-radiant-floor-with-doas-possibly-due-to-condensation-shutoff/

this post: https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/ but I couldn't solve my warnings. error. Could somebody help me please?

The major problem is when I try to export my results to .csv I get "0" Ideal Loads so I can't compare anything. The measure that I use to export to .csv file is:

OpenStudio Measures

• AddOutputVariable with variable name Zone Air System Sensible Heating Energy
• AddOutputVariable 1 with variable name Zone Air System Sensible Cooling Energy

Reporting Measures

• ExportOutputVariabletoCSV with variable name Zone Air System Sensible Heating Energy
• ExportOutputVariabletoCSV 1 with variable name Zone Air System Sensible Cooling Energy

I'm attaching my updated .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/wnc6z4uy8084bcc/radiant_model.zip/filehttp://www.mediafire.com/file/281lrnz1tnqhgkg/radiant_model.zip/file

Thank's in advance!

Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following error every time:

 ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** 
 * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 1
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 2
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 3
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 4
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 5
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 6
   ** Severe  ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   **   ~~~   ** * Severe  * Hydronic radiant systems may not be autosized without specification of nodes or schedules.
   *   ~~~   * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 7
   ** *  Fatal  ** * GetLowTempRadiantSystem: Errors found in input. Preceding conditions cause termination.
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=8
   ..... Last severe error=Hydronic radiant systems may not be autosized without specification of nodes or schedules.

I have already seen this post: https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/ but I couldn't solve my error. Could somebody help me please?

I'm attaching my .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/281lrnz1tnqhgkg/radiant_model.zip/file

Thank's in advance!

Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following error every time:

* Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 1 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 2 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 3 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 4 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 5 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 6 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 7 * Fatal * GetLowTempRadiantSystem: Errors found in input. Preceding conditions cause termination. ...Summary of Errors that led to program termination: ..... Reference severe error count=8 ..... Last severe error=Hydronic radiant systems may not be autosized without specification of nodes or schedules. schedules.

I have already seen this post: https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/ but I couldn't solve my error. Could somebody help me please?

I'm attaching my .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/281lrnz1tnqhgkg/radiant_model.zip/file

Thank's in advance!

Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following error every time:

* Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 1 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 2 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 3 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 4 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 5 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 6 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 7 * Fatal * GetLowTempRadiantSystem: Errors found in input. Preceding conditions cause termination. ...Summary of Errors that led to program termination: ..... Reference severe error count=8 ..... Last severe error=Hydronic radiant systems may not be autosized without specification of nodes or schedules.

I have already seen this post: https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/ but I couldn't solve my error. Could somebody help me please?

I'm attaching my .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/281lrnz1tnqhgkg/radiant_model.zip/file

Thank's in advance!

Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following error every time:

* Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 1 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 2 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 3 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 4 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 5 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 6 * Severe * Hydronic radiant systems may not be autosized without specification of nodes or schedules. * ~~~ * Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 7 * Fatal * GetLowTempRadiantSystem: Errors found in input. Preceding conditions cause termination. ...Summary of Errors that led to program termination: ..... Reference severe error count=8 ..... Last severe error=Hydronic radiant systems may not be autosized without specification of nodes or schedules.

I have already seen this post: https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/ but I couldn't solve my error. Could somebody help me please?

I'm attaching my .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/281lrnz1tnqhgkg/radiant_model.zip/file

Thank's in advance!