Two lights indicate the device operational status:

Lights	Module condition	Explanation
Status light OFF and power supply light ON	Prerun mode	Module ready to begin an analysis.
Green status light	Run mode	Module performing an analysis.
Yellow status light	No-ready mode	Module waiting for a specific condition to be reached or completed.
Red status light	Error mode	An error has occurred during analysis. See the status display of the user interface to find the cause.
Blinking status light	Resident mode	Module is being updated
Fast blinking status light	Low-level error mode	Module must be rebooted / cold-started. A firmware update may be needed. If problem persists, replace Main Board or contact Moyo Scientific Service.

Whenever an error occurs in the system, it will propagate through the CAN bus or APG remote cable. Depending on whether it occurred during a method run or not, the other modules will be informed and stopped, or will remain idle waiting for the system to be ready again.

General errors

The following is a list of errors regarding all HPLC modules:

Message	Probable causes	Suggested actions
0062 – Timeout	The analysis was completed successfully, and the timeout function switched off the module as requested. A not-ready condition was present during a sequence or multiple-injection run for a period longer than the timeout threshold.	Check the logbook for the occurrence and source of a not-ready condition. Restart the analysis where required.
0063 – Shutdown	Leak detected in another module with a CAN connection to the system. Leak detected in an external instrument with a remote connection to the system. Shut-down in an external instrument with a remote connection to the system. The degasser failed to generate sufficient vacuum for solvent degassing.	Fix the leak in the external instrument before restarting the module. Check external instruments for a shut-down condition. Check the vacuum degasser for an error condition. Refer to the Service Manual for the degasser or the 1260 pump that has the degasser built-in.
0070 – Remote Timeout	Not-ready condition in one of the instruments connected to the remote line. Defective remote cable. Defective components in the instrument showing the not-ready condition.	Ensure the instrument showing the not-ready condition is installed correctly, and is set up correctly for analysis. Exchange the remote cable. Check the instrument for defects (refer to the instrument’s documentation).
0071 – Lost CAN Partner / Synchronisation lost	CAN cable disconnected. Defective CAN cable. Defective main board in another module.	Ensure all the CAN cables are connected / installed correctly. Exchange the CAN cable. Switch off the system. Restart the system, and determine which module or modules are not recognised by the system.
0064 – Leak	Loose fittings. Broken capillary. Loose or leaking purge valve, inlet valve, or outlet valve. Defective pump seals.	Ensure all fittings are tight. Exchange defective capillaries. Ensure pump components are seated correctly. If there are still signs of a leak, exchange the appropriate seal (purge valve, inlet valve, outlet valve). Exchange the pump seals.
0083 – Leak sensor open	Leak sensor not connected to the main board. Defective leak sensor. Leak sensor incorrectly routed, being pinched by a metal component.	Contact Moyo Scientific Service.
0082 – Leak sensor short	Defective leak sensor. Leak sensor incorrectly routed, being pinched by a metal component.	Contact Moyo Scientific Service.
0081 – Compensation sensor open	Defective Main Board	Contact Moyo Scientific Service.
0080 – Compensation sensor short	Defective Main Board	Contact Moyo Scientific Service.
0068 – Fan failed	Fan cable disconnected. Defective fan. Defective main board. Improperly positioned cables or wires obstructing fan blades.	Contact Moyo Scientific Service.
0205 – Open cover	The top foam was removed during operation. Foam not activating the sensor. Defective sensor or main board. Rear of the module is exposed to strong direct sunlight.	Ensure that the rear of module is not directly exposed to strong sunlight. Contact Moyo Scientific Service.
Cover violation	The top foam was removed during operation. Foam not activating the sensor.	Replace the top foam. Exchange the foam.

Autosampler related errors

The following is a list of autosampler specific errors:

 

Message	Probable causes	Suggested actions
Exhaust fan failed	Fan cable disconnected. Defective fan. Defective MTP board.	Ensure the fan is connected correctly. Exchange fan. Exchange the MTP board.
Front door error	The sensor on the SLS board is defective. The door is bent or the magnet is misplaced/broken.	Exchange the door. Exchange the SLS board. Exchange the MTP board.
Side door error	The door is bent or the magnet is misplaced/broken. The sensor on the MTP board is defective.	Change the side door. Exchange the MTP board.
Arm movement failed or arm movement timeout 0: X-axis 1: Y-axis 2: Theta (needle carrier rotation)	Mechanical obstruction. High friction in transport assembly. Defective motor assembly. Defective sample transport assembly flex board. Defective MTP board.	Ensure unobstructed movement of the transport assembly. Exchange the sample transport assembly. Exchange the MTP board.
Valve to bypass failed	Valve in an intermediate position between the By-and the Main position Defective injection valve. Defective MTP board.	Turn the WPS main power OFF and ON. Exchange the injection valve. Exchange the MTP board.
Valve to mainpass failed	Valve in an intermediate position between the bypass and mainpass positions. Defective injection valve. Defective MTP board.	Turn the WPS main power OFF and ON. Exchange the injection valve. Exchange the MTP board.
Needle lock failed	Defective or dirty position sensors. Sticking spindle assembly. Defective needle drive motor Defective MTP board.	Clean the position sensor. Exchange the needle drive motor. Exchange the sampling unit assembly. Exchange MTP board.
Needle to needle seat position	Bad sample transport/sampling unit alignment Bent needle. Missing needle. Blocked seat. Defective position sensor in the needle carrier assembly. Defective MTP board.	Do an auto-alignment Check and exchange the needle assembly if necessary. Clean or change the needle seat assembly if necessary. Exchange the needle carrier assembly. Exchange the sample transport assembly. Exchange the MTP board.
Needle carrier failed	Defective Z-motor. Vial pusher blocked. Bad needle carrier positioning in X or Theta. Defective vial pusher sensor. Defective MTP main board.	Exchange the needle carrier assembly. Exchange the sample transport assembly. Exchange the MTP main board.
Missing vial or missing wash vial	No vial in the position defined in the method or sequence. Defective needle carrier assembly. Defective transport assembly flex board. Defective MTP board.	Install the sample vial in the correct position, or edit the method or sequence accordingly. Exchange the needle carrier assembly. Exchange the sample transport assembly. Exchange the MTP main board.
Initialisation failed	Side door not installed correctly. Sample transport/sampling unit not aligned correctly Mechanical obstruction. Defective sampling unit flex board. Defective transport assembly flex board. Defective sampling unit motor. Defective MTP board.	Check if the side door is installed correctly. Check if the magnet is in place in the side door. Do an auto-alignment Ensure unobstructed movement of the transport assembly. Exchange the defective sampling unit motor. Exchange the sample transport assembly. Exchange the MTP board.
Metering home failed	Dirty or defective sensor. Broken plunger. Defective metering-drive motor. Defective MTP board.	Exchange the sampling unit flex board. Exchange the metering plunger and seal. Exchange the metering-drive motor. Exchange the MTP board.
Motor temperature 0: X-axis 1: Y-axis 2: Theta (needle carrier rotation)	Mechanical obstruction. High friction in the transport assembly. Motor belt tension too high. Defective motor. Defective transport assembly flex board.	Switch off the sampler at the power switch. Wait at least 10 minutes before switching on again. Ensure unobstructed movement of the transport assembly. Exchange the sample transport assembly. Exchange the MTP main board.
Invalid vial position	Incorrect tray installed. Incorrect tray definition. Incorrect vial positions defined in the method or sequence. Tray recognition defective (dirty sample tray or defective transport assembly flex board).	Install the correct trays, or edit the method or sequence accordingly. Ensure the coding surfaces of the sample tray are clean (located at the rear of the sample tray). Exchange the transport assembly.
Peristaltic pump error	Defective motor. Defective SUD board. Defective MTP main board.	Exchange the peristaltic pump motor. Exchange the SUD board. Exchange the MTP main board.
Vessel or wash vessel error	Bad vessel definition in the plate configuration. Closing mats to rigid/thick. Bad X or Theta positioning. Defective encoder on the needle carrier assembly.	Check the vessel definition in the plate configuration. Check that the closing mats is not too thick. Exchange the needle carrier assembly. Change the sample transport assembly. Change the MTP main board
Vessel stuck to needle	Closing mat to rigid/thick. Bad X or Theta positioning and the needle sticks into the wall between two holes. Defective encoder on the needle carrier assembly.	Check that the closing mat is not too thick. Exchange the needle carrier assembly. Change the sample transport assembly. Change the MTP main board.