Before doing any calculations (see actions button), the software will always first verify whether the model is consistent to proceed further calculations. When information is missing or information is not consistent, the model cannot be validated and the software will indicate the inconsistency or error.
Model inconsistencies and errors might be be indicated on nodes as well as on basic circuits. When a model inconsistency is indicated on a node, the respective node is marked with an orange circle.
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The figures below illustrate some typical examples of model errors.
'Dead end node' means that this model is not complete. This pipe segment needs to be connected with a basic circuit.
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