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Error when using PTHP

I'm trying to use the PTHP system to make redundancy to a chilled water coil in a IT Room.

To run the simulation with PTHP, the below error occurs indicating that there is an absence of filling in the fields Air Inlet Air Outlet Node Name and Node Name.

Is this a bug or am I making a mistake?

   *************  47938 Fan:ConstantVolume,
   ************* indicated Name=Fan Constant Volume
   ************* Only last 9 lines before error line shown.....
   *************  47939   Fan Constant Volume,                    !- Name
   *************  47940   Always On Discrete 1,                   !- Availability Schedule Name
   *************  47941   0.7,                                    !- Fan Total Efficiency
   *************  47942   250,                                    !- Pressure Rise {Pa}
   *************  47943   AutoSize,                               !- Maximum Flow Rate {m3/s}
   *************  47944   0.9,                                    !- Motor Efficiency
   *************  47945   1,                                      !- Motor In Airstream Fraction
   *************  47946   ,                                       !- Air Inlet Node Name
   *************  47947   ;                                       !- Air Outlet Node Name

Error when using PTHP

I'm trying to use the PTHP system to make redundancy to a chilled water coil in a IT Room.

To run the simulation with PTHP, the below error occurs indicating that there is an absence of filling in the fields Air Inlet Air Outlet Node Name and Node Name.

However, I do not understand where to set these nodes.

Is this a bug or am I making a mistake?

   *************  47938 Fan:ConstantVolume,
   ************* indicated Name=Fan Constant Volume
   ************* Only last 9 lines before error line shown.....
   *************  47939   Fan Constant Volume,                    !- Name
   *************  47940   Always On Discrete 1,                   !- Availability Schedule Name
   *************  47941   0.7,                                    !- Fan Total Efficiency
   *************  47942   250,                                    !- Pressure Rise {Pa}
   *************  47943   AutoSize,                               !- Maximum Flow Rate {m3/s}
   *************  47944   0.9,                                    !- Motor Efficiency
   *************  47945   1,                                      !- Motor In Airstream Fraction
   *************  47946   ,                                       !- Air Inlet Node Name
   *************  47947   ;                                       !- Air Outlet Node Name

Error when using PTHP

I'm trying to use the PTHP system to make redundancy to a chilled water coil in a IT Room.

To run the simulation with PTHP, the below error occurs indicating that there is an absence of filling in the fields Air Inlet Air Outlet Node Name and Node Name.

However, I do not understand where to set these nodes.

Is this a bug or am I making a mistake?

   *************  47938 Fan:ConstantVolume,
   ************* indicated Name=Fan Constant Volume
   ************* Only last 9 lines before error line shown.....
   *************  47939   Fan Constant Volume,                    !- Name
   *************  47940   Always On Discrete 1,                   !- Availability Schedule Name
   *************  47941   0.7,                                    !- Fan Total Efficiency
   *************  47942   250,                                    !- Pressure Rise {Pa}
   *************  47943   AutoSize,                               !- Maximum Flow Rate {m3/s}
   *************  47944   0.9,                                    !- Motor Efficiency
   *************  47945   1,                                      !- Motor In Airstream Fraction
   *************  47946   ,                                       !- Air Inlet Node Name
   *************  47947   ;                                       !- Air Outlet Node Name