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 cause	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	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.

Detector related errors

The following is a list of detector specific errors:

Message	Probable cause	Suggested actions
Visible lamp current	Visible lamp disconnected. Defective visible lamp. Defective detector main board. Defective power supply.	Ensure the visible lamp connector is seated firmly. Exchange the visible lamp. Exchange the detector main board. Exchange the power supply.
Visible lamp voltage	Defective detector main board. Defective power supply.	Exchange the detector main board. Exchange the power supply.
Calibration values invalid	Defective detector main board. Defective optical unit.	Exchange the detector main board. Exchange the optical unit.
Wavelength recalibration lost	The detector is new. The detector has been repaired.	Recalibrate the detector. Exchange the optical unit.
Diode current leakage	Defective optical unit. Defective detector main board.	Exchange the optical unit. Defective detector main board.
Holmium oxide test failed	Lamps switched off. Defective or dirty flow cell. Defective filter assembly. Defective achromat assembly. Defective optical unit.	Ensure the lamps are switched on. Ensure the flow cell is inserted correctly, and is free from contamination (cell windows, buffers etc.). Exchange the filter assembly. Exchange the achromat assembly. Exchange the optical unit.
UV lamp current	UV lamp disconnected. Defective UV lamp or non-Agilent lamp. Defective detector main board. Defective power supply.	Ensure the UV lamp connector is seated firmly. Exchange the UV lamp. Exchange the detector main board. Exchange the power supply.
UV lamp voltage	Defective UV lamp or non-Agilent lamp. Defective detector main board. Defective power supply.	Exchange the UV lamp. Exchange the detector main board. Exchange the power supply.
UV Ignition failed	Lamp too hot. Hot gas discharge lamps may not ignite as easily as cold lamps. Lamp not connected. Defective UV lamp or non-Agilent lamp. Defective detector main board. Defective power supply.	Switch off the lamp and allow it to cool down for at least 15 minutes. Ensure the lamp is connected. Exchange the UV lamp. Exchange the detector main board. Exchange the power supply.
UV heater current	UV Lamp not connected. Ignition started without the top foam in place. Defective UV lamp or non-Agilent lamp. Defective detector main board. Defective power supply.	Ensure the UV lamp is connected. Replace the top foam, and turn on the lamp. Exchange the UV lamp. Exchange the detector main board. Exchange the power supply.
Illegal value from temperature sensor mounted on the fan assembly	The sensor is defect Detector is exposed to illegal ambient conditions.	Ensure the connector to the detector main board is seated firmly. Verify that the ambient conditions are within the allowed range. Exchange temperature sensor assembly.
Illegal value from air inlet temperature sensor	The sensor is defective Detector is exposed to illegal ambient conditions.	Verify that the ambient conditions are within the allowed range. Exchange detector main board.
Heater failed	Defective connector or cable. Defective heater.	Ensure the connector to the detector main board is seated firmly. Exchange heater assembly.
Heater power at limit 0 means upper power limit hit (excessive ambient temperature drop). 1 means lower power limit hit (excessive ambient temperature increase).	Ambient conditions have changed too much during the run, so that optimum results may not be guaranteed.	Verify that the reproducibility of your results is not affected Expose the detector to more stable ambient conditions.