In general, errors during calculation originate from incorrectly defined boundary conditions for the calculation. Study the keywords which give rise to the error message, and study the section on basic elements and properties.
As a rule, the name of the node(s)/pipe(s) which generated the error are shown in the message.
Error messages generated when the calculation module was inputting keywords are saved to a log file. This file shows row numbers for rows which generated errors.
Message Action
*** WARNING ***
Both keywords: *FORW and *PSUP
used Change input
data
*** WARNING *** Energy cannot be extracted from accumulator The accumulator is empty! Change
in node: XX
because minimum temperature has been reached. Calculation
criteria
*** WARNING *** Energy cannot be stored in accumulator The accumulator is empty! Change
in node: XX
because maximum temperature has been reached. Calculation
criteria
*** ERROR *** Missing default type in table Change to other Default pipe type
Execution stopped
due to input
error.
a ? in the calculation formula.
*** WARNING *** Heat capacity of accumulator in node: XX Change calculation criteria
has been violated.
*** WARNING *** Inlet temperature at node: XX on supply side Change input data
cannot be
calculated.
*** WARNING *** Temperature specification not permitted Check data for bypass
in the same node!
*** WARNING *** Outlet temperature at node: XX – Check boundary conditions
Too many
temperatures specified.
*** WARNING *** Temperature at node: XX – Check boundary conditions
Too many
temperatures specified.
*** WARNING *** Temperature in pipe: XX – Check boundary conditions
Too many
temperatures specified.
*** WARNING *** Temperature in pipe: XX – Change input data
too many inlet
temperatures specified
***
WARNING *** To many
producers
Reduce number of production plants
***
WARNING *** Too many flows specified
Change input data, check that only one production plant has an unknown
flow
*** WARNING ***
Too many temp. specified in node: XX Check boundary conditions
*** Warning *** Blind end in critical route! Suppressed due to the fact that the route is
“circulating”
“CUBER” Number of
iterations exceeded
Too many loops in the model!
Accumulator AND
bypass in the same node is not allowed. Change input data
Accumulator not
possible with steam
Correct type of calculation?
Ambient
temperature missing.
Enter ambient temperature
Bypass is not allowed with steam Change input data
CBRKFF too many iterations Change so that pipe type ? is not
The arithmetical
operation caused
wastage
approved for dimensioning
Criteria
for optimization missing!
Correct input data for pipe dimensioning
DP is specified at both ends. Correct input data
Data missing
Correct input data
Data missing Correct input data for pipe dimensioning
Data missing for pipe XX Correct input data for the pipe
Diameter in pipe XX is known The pipe already has a dimension, delete dimensioning criteria for the pipe
Elevation not found Change input data
External temperature missing. Enter ambient temperature
Flow cannot be distributed Consequential error, check boundary conditions
Flow in pipe X-Y between X and Y unknown Consequential error, check boundary conditions
Flow is specified in node with accumulator with unknown power. Change input data
Illegal data input Correct input data for pipe dimensioning
Illegal data input for pipe Correct input data for pipe dimensioning
Incorrect pressure Correct input data
Incorrect temperature Correct input data
Incorrect velocity. Correct input data
Invalid node type! Correct input data
This keyword: XX unknown Correct input data
Length of pipe: XX unknown Pipe length missing, enter length
Max no. of nodes is exceeded Contact Vitec or reduce number of
nodes in the model.
Maximum no. of heaters exceeded. Reduce number of heat exchangers
Maximum no. of valves exceeded. Reduce number of valves
Minimum 1 line of text must be specified Header must not be empty!
Missing data Correct input data
Missing data in pipe table! Correct input data for pipe dimensioning
Missing default type in pipe table! Change input data for pipe dimensioning
Neither supply nor return pipe has been specified for pipe Change input data for pipe dimensioning
No flow in pipe the heater should be turned off. Change input data
No pump in node: XX Pump is defined but the node's input data is not complete
No pump in pipe Pump is defined but the pipe's input data is not complete
No solution obtained Check boundary conditions
No valve in pipe XX Valve is defined but the pipe's input data is not complete
Node XX is not connected to pipes Connect the node to a pipe or remove the node
Node given under *ACCU does not exist Change input data
Node given under *SHUNT does not exist. Correct input data
Node name: XX unknown! Reference has been made to a node which is not defined
Node: is duplicated. Correct input data
PRSADM: Pressure cannot be distributed Check boundary conditions
Pipe XX is unknown Reference has been made to a pipe which is not defined
Pipe name: XX unknown! Reference has been made to a pipe which is not defined
Pipe: XX is duplicated. Correct input data
Producer node has a bypass. That is not allowed. Correct input data
Pump in pipe X-Y cannot be placed correctly Change placement of the pump !
Shunt AND bypass in the same node is not allowed. Correct input data
Temp. cannot be calculated Check boundary conditions
Temp. cannot be distributed. Check boundary conditions
Temperature change in node must not be zero. Correct input data
Temperature in pipe: XX is unknown Check boundary conditions
The critical route is suppressed due to too many nodes. Critical route is too long
Too many accumulators Reduce number!
Too many local dimension criteria Correct input data
Too many loops Too many loops in model!
Too many pipes in loops Reduce number of loops in model!
Too many shunt valves. Reduce number of shunts
Unexpected End of
Input File
Does *STOP appear in the right place in the
file?
Check input data.
Unknown keyword(s) in input file! Unknown keyword!
Velocity must be specified. Correct input data for pipe dimensioning
Wrong data Change input data for pipe dimensioning
Wrong data (pipe end) Check data for heat exchanger
Wrong data (supply/return pipe) Check data for heat exchanger
Wrong input of maximum and minimum temperatures Change input data
Wrong input of mean temperature Change input data
Missing data (Flow Factors) Correct file licheat.cf1
Incorrect no. of data (Flow Factors) Correct file licheat.cf1
Missing data (Power Factors) Correct file licheat.cf1
Incorrect no. of data (Power Factors) Correct file licheat.cf1
Missing data (Inlet Temp.) Correct file licheat.cf1
Incorrect no. of data (Inlet Temp.) Correct file licheat.cf1
Type unknown! Correct file licheat.cf1
Missing data (Output) Correct file licheat.cf1
Incorrect no. of data (Output) Correct file licheat.cf1
Type unknown! Correct file licheat.cf1
Missing data (Prices) Correct file licheat.cf1
Incorrect no. of data (Prices) Correct file licheat.cf1
No data in Cf1 file Correct file licheat.cf1
CF1 file missing! No CF1 file specified
Dynamic temperatures missing. They must be in the CF1 file. Correct in file licheat.cf1