ESYS0001

The error message

Open

Meaning

This error shows the fact that there is no pump placed to provide the necessary flow to the production unit/end unit/valves.

This can happen with a multitude of different components. The errors are as follows:

• No pump for

  • Gate X of this buffer

  • the ventilation cooling unit

  • this changeover on the cooling/heating side

  • this end unit

  • this production unit

• No pump in recirculation circuit

• No pump on primary side of mixing circuit

• No pump on secondary side of the second heat exchanger

• No pumps over this control valve

• Pump missing on

  • Primary/secondary side of heat exchanger

  • Primary/secondary side of heat pump booster

  • Primary/secondary side of the hydraulic separator

• …

ESYS00002

The error message

This error allows you to keep calculating but is an hydraulic error.

Open

Meaning:

There are 2 pumps which are placed in ‘series’. The error shows up because the second pump is placed after a mixing valve. When the valve is fully open the pumps are in series. Pumps in series cause control interference between the pump controls and the three-way valve controls, causing faster degradation of the three-way valve together with reduced control performance in operation.

How to solve:

You can solve this error in multiple ways:

1. Remove the primary pump and rely on an active distribution circuit.

2. Replace the active distribution circuit to a passive distribution circuit.

More information on active/passive distribution circuits can be found here: https://hysopt.atlassian.net/wiki/x/4YUhu

It is possible that during renovations, the erroneous situation is effectively in place. Therefore, you can continue working with the error to reproduce the behaviour in simulation. However, it is discouraged strongly to have pumps in series in your designs.

ESYS00003

The error message

Meaning

This error message shows during the system check if a base circuit (a block) is orientated incorrectly.

In the example above, you can see a pump in the supply line that is directed away from the end unit. Thi pump is thus installed in the wrong flow direction (note the arrows shown on the heat exchanger), hence the pump should be flipped (use shortcut 'F') and reconnect the pipes.

How to solve

Ensure that the highlighted base circuit is currently oriented. Use the shortcut ‘F' to flip the base circuit and the shortcut 'r’ to rotate the base circuit. The expected orientation is governed by following rules:

• Pumps in the supply line should be directed towards end units.

• Pumps in the return line should be directed towards production units.

• On all other base circuits, the expected orientation is always displayed with an arrow.

ESYS00004

The error message

Meaning

This error shows if there is a pump placed after a dividing circuit, as this arrangement does not allow for the needed mixing that the valve is supposed to do.

How to solve

The pump should be placed before the diving circuit.

ESYS00005

The error message:

Meaning

This error message shows that there is a pump missing between the boiler and hydraulic separator.

How to solve

Place a pump at the primary side of the hydraulic separator.