Thermo Scientific Vanquish VH-P10-A-02, Operating Manual

Page: 201 / 238

8 • Troubleshooting
Vanquish Pumps (VH-P10-A-02) Operating Manual Page 201
Message and Code Possible Cause and Remedial Action
Code 91 Data changed during
read.
•
This may be a temporary error. Turn off the module. Wait for 5 seconds and
turn on the module again.
•
The firmware may be defective. Update the firmware, see section 7.14,
page 182 .
•
If the message appears for the pressure sensor in a pump head or for the
system pressure sensor: Verify that the cable of the pressure sensor for which
the message appears is properly plugged into the connection port.
Code 92 Data verification failed. •
This may be a temporary error. Turn off the module. Wait for 5 seconds and
turn on the module again.
• The firmware may be defective. Update the firmware, see section 7.14,
page 182 .
•
If the message appears for the pressure sensor in a pump head or for the
system pressure sensor: Verify that the cable of the pressure sensor for which
the message appears is properly plugged into the connection port.
Code 4098 Upper pressure limit
exceeded. Check the flow path for blockage.
If the flow path is blocked:
•
The column may be contaminated. Rinse or replace the column. If the problem
occurs due to column ageing, it may be sufficient to increase the setting for
the upper pressure limit.
• The autosampler may be blocked. Check the autosampler components and
eliminate the source for the blockage.
If the flow path is not blocked:
Depending on the pump configuration, test the inline filter or static mixer for
permeability (depending on which component is installed, see
section 7.9.1,
page 167 or section 7.10.1, page 170 ).
Code 4099 Pressure fallen below
lower limit. Check the following causes:
•
One or more solvent reservoirs are empty. Fill the reservoirs and purge the
pump (see
section 6.8, page 98 ). If you are monitoring the solvent
consumption from Chromeleon, the message "Code 4158 Out of eluent X"
alerts you when a reservoir is empty.
• Air bubbles may be trapped in the solvent lines. Check the solvent line filters.
Purge the pump (see
section 6.8, page 98 ).
•
Leakage may be present in the system. Resolve the leakage. For the pump, see
section 8.4, page 208 . For the other system modules, refer to the
Operating
Manuals
for the modules.
•
A check valve may be contaminated or defective. Clean or replace the check
valves as appropriate (see
section 7.8, page 163 ).
•
With the applied flow, the pump cannot build up enough pressure to reach the
lower pressure limit. Adapt the lower pressure limit or increase the flow.