Heidolph Hei-VAP Expert Operating Instructions Manual page 139

Troubleshooting
Automatic mode (DAA) cannot be
selected
Control box not connected or
defective
Ventilation valve defective
Vacuum valve not connected or
defective
Vacuum pump not connected or
defective
All system messages (error messages, warnings, information) are
shown in plain text on the display.
Follow the instructions on the display.
In case of recurring errors, please contact the responsible sales
department or our technical service. Contact address see "Contact
information Heidolph international" on page 146.
AUTOaccurate sensor not connected, connect
or check the connection, switch off and on
the device if necessary.
AUTOaccurate sensor defective, visual
inspection for defect, contact technical
service, replace sensor if necessary.
Temperature outside the measuring range,
heat the sensor or let it cool down.
Check connection between control box and
evaporator, contact technical service.
Short circuit in the ventilation valve, contact
technical service.
Vacuum valve not connected or connection
between control box and vacuum valve
interrupted, connect vacuum valve, check
connection between control box and vacuum
valve, contact technical service.
Short circuit in the vacuum valve, contact
technical service.
Vacuum pump not connected or connection
between Control Box and vacuum pump
interrupted, connect vacuum pump, check
connection between Control Box and vacuum
pump.
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