Troubleshooting
Status:
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.  | 
Error messages:
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 | 
  | 
  | 
| 0063 – Shutdown | 
  | 
  | 
| 0070 – Remote Timeout | 
  | 
  | 
| 0071 – Lost CAN Partner / Synchronisation lost | 
  | 
  | 
| 0064 – Leak | 
  | 
  | 
| 0083 – Leak sensor open | 
  | 
Contact Moyo Scientific Service. | 
| 0082 – Leak sensor short | 
  | 
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 | 
  | 
Contact Moyo Scientific Service. | 
| 0205 – Open cover | 
  | 
  | 
| Cover violation | 
  | 
  | 
Thermostat related errors
The following is a list of thermostat specific errors:
| Message | Probable causes | Suggested actions | 
| Left / Right fan failed | 
  | 
  | 
| Left / Right temperature timeout | 
  | 
  | 
| Defective temperature sensor 0: left column. 1: left heatsink. 2: right column. 3: right heatsink. 4: ambient-correction sensor (located on left flex board).  | 
  | 
  | 
| Heater profile 0: left heater 2: right heater  | 
  | 
  | 
| Valve failed 0: failed to switch to the position where ports 1 and 2 are connected. 1: failed to switch to the position where ports 1 and 6 are connected.  | 
  | 
  | 
| Column temperature 0: left heater 2: right heater  | 
  | 
  | 
| Heatsink temperature 0: left heater 2: right heater  | 
  | 
  | 
| Defective eater circuit | Defective CCM board. | Exchange the CCM board. | 
 









