| Message |
Probable causes |
Suggested actions |
| 2014 / 2500 – Pressure above upper limit |
- Upper pressure limit set too low.
- Blockage in the flowpath (after the damper).
- Defective damper.
- Defective main board.
|
- Ensure the upper pressure limit is set to a value suitable for the analysis.
- Check for blockage in the flowpath. The following components are particularly subject to blockage: inline filter frit, needle (autosampler), seat capillary (autosampler), sample loop (autosampler), column frits and capillaries with small internal diameters (e.g. 50 μm ID).
- Contact Moyo Scientific Service
|
| 2015 / 2501 – Pressure below lower limit |
- Lower pressure limit set too high.
- Air bubbles in the mobile phase.
- Leak.
- Defective damper.
- Defective main board.
|
- Ensure the lower pressure limit is set to a value suitable for the analysis.
- Make sure that the degasser is in flow path and works correctly. Purge the module.
- Ensure solvent inlet filters are not blocked.
- Inspect the pump head, capillaries and fittings for signs of a leak.
- Purge the module. Run a pressure test to determine whether the seals or other module components are defective.
- Contact Moyo Scientific Service.
|
| 2044 – AIV fuse |
- Defective active inlet valve.
- Defective connection cable (front panel to main board).
- Defective main board.
|
- Restart the module. If the error message appears again, exchange the active inlet valve.
- Contact Moyo Scientific Service.
|
| 2041 / 2042 – Motor-drive power |
- Flow path blockage in front of the damper.
- Blocked passive inlet valve.
- Blocked outlet valve.
- High friction (partial mechanical blockage) in the pump drive assembly.
- Defective pump drive assembly.
- Defective main board.
|
- Ensure the capillaries and frits between the pump head and damper inlet are free from blockage.
- Exchange the passive inlet valve.
- Exchange the outlet valve.
- Remove the pump-head assembly. Ensure there is no mechanical blockage of the pump-head assembly or pump drive assembly.
- Contact Moyo Scientific Service
|
| 2517 – Temperature limit Exceeded |
- High friction (partial mechanical blockage) in the pump drive assembly.
- Partial blockage of the flowpath in front of the damper.
- Defective pump drive assembly.
- Defective main board.
|
- Remove the pump-head assembly. Ensure there is no mechanical blockage of the pump-head assembly or pump drive assembly.
- Ensure the outlet valve is not blocked.
- Contact Moyo Scientific Service.
|
| 2201 / 2211 – Servo restart failed |
- Disconnected or defective cable.
- Blocked passive inlet valve.
- Mechanical blockage of the module.
- Defective pump drive assembly.
- Defective main board.
|
- Exchange the passive inlet valve.
- Remove the pump-head assembly. Ensure there is no mechanical blockage of the pump-head assembly or pump drive assembly.
- Contact Moyo Scientific Service.
|
| 2202 / 2212 – Pump head missing |
- Pump head not installed correctly (screws not secured, or pump head not seated correctly).
- Broken piston.
|
- Install the pump head correctly. Ensure nothing (e.g. capillary) is trapped between the pump head and body.
- Exchange the piston.
|
| 2203 / 2213 – Index limit |
- Irregular or sticking drive movement.
- Defective pump drive assembly.
|
- Remove the pump head, and examine the seals, pistons, and internal components for signs of wear, contamination or damage. Exchange components as required.
- Contact Moyo Scientific Service
|
| 2204 / 2214 – Index adjustment |
- Irregular or sticking drive movement.
- Defective pump drive assembly.
|
- Remove the pump head, and examine the seals, pistons, and internal components for signs of wear, contamination or damage. Exchange components as required.
- Contact Moyo Scientific Service.
|
| 2205 / 2215 / 2505 – Index missing |
- Disconnected or defective encoder cable.
- Defective pump drive assembly.
|
Contact Moyo Scientific Service. |
| 2206 / 2216 – Stroke length |
Defective pump drive assembly. |
Contact Moyo Scientific Service. |
| 2207 / 2217 – Initialisation failed |
- Blocked passive inlet valve.
- Defective pump drive assembly.
- Defective main board.
|
- Exchange the passive inlet valve.
- Contact Moyo Scientific Service.
|
| 2053 – Wait timeout |
- Purge valve open.
- Leak at fittings, purge valve, active inlet valve, outlet valve or piston seals.
- Flow changed after starting test.
- Defective pump drive assembly.
|
- Ensure that purge valve is closed.
- Ensure pump components are seated correctly. If there are still signs of a leak, exchange the appropriate seal (purge valve, active inlet valve, outlet valve, piston seal).
- Exchange defective capillaries.
- Ensure correct operating condition for the special application in use.
- Contact Moyo Scientific Service.
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