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EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination
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updated 2022-03-15 08:59:31 -0500

Aaron Boranian's avatar

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: I'm not sure if this is relevant or not, maybe it can help in diagnosing this issue, but when I try to use the (Dup Obj + Chg) function for the cooling coil object of a DOAS unit, the only field not automatically updated is the (Air Inlet Node Name) as seen in the picture below.

image description

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: I'm not sure if this is relevant or not, maybe it can help in diagnosing this issue, but when I try to use the (Dup Obj + Chg) function for the cooling coil object of a DOAS unit, the only field not automatically updated is the (Air Inlet Node Name) as seen in the picture below.

image description

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: To clarify, this is my second DOAS unit in this model, which is identical to my first DOAS unit, but I'm only getting this error for the second one.

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: To clarify, this is my second DOAS unit in this model, which is identical to my first DOAS unit, but I'm only getting this error for the second one.

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but my model fails to complete the sizing of the cooling coil of the DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: To clarify, this is my second DOAS unit in this model, which is identical to my first DOAS unit, but I'm only getting this error for after adding the second one.

EnergyPlus DOAS Water Cooling Coil Sizing Error

I'm having an issue with EnergyPlus 9.6. I added a DOAS 2 DOAS units to my model, but my model fails to complete the sizing of the cooling coil of the second DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: To clarify, this is my second DOAS unit in this model, which is identical to my first DOAS unit, but I'm only getting this error after adding the second one.

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