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Symptoms and solutions
100
Troubleshooting
Symptoms and solutions
See Table 7-17 for common symptoms and their remedies. Also see Table
7-18 for any error codes that are received.
Table 7-17: Troubleshooting
Symptom
Possible cause(s)
Corrective action
Unit runs automatically
Address switch and jumpers set
incorrectly
• Verify proper address switch setting.
See "Set configuration jumpers and
address switch" (page 22).
• Verify AutoRun jumper is removed.
No response to host com-
mands
Pump not receiving power
• Check 24VDC power supply.
• Verify LEDs lit on pump.
• Check cables (broken or unconnected
wires, connectors properly seated, proper
connections per pinout diagram).
For pinout, refer to "Connector J3 pin
assignments" (page 24).
No communications to pump
• Verify proper COM port is selected on host
computer.
• Verify any external RS485 converter is
working properly.
• Verify proper pump address is selected.
See "Address switch setting" (page 22).
• Verify proper baud rate setting is selected.
See "Configuration jumpers" (page 22) and
"CAN baud rate" (page 23) and Table 5-9
(page 79).
• Verify that execute command [R] is being
sent at end of command strings.
Pump does not complete
initialization command.
Syringe not installed correctly and
obstructs motion
• Verify pump initializes without syringe
installed.
• Reinstall syringe.
See "Replacing syringe" (page 96).
Damaged PCBA (motor connection
or sensor issues)
Contact customer service.
Fluid obstruction
Check fittings, look for kinked or
obstructed tubing, and probe for other
obstructions.
Fluid leaking
Syringe not installed correctly
Reinstall syringe.
See"Replacing syringe" (page 96).
Fittings not installed correctly
Verify fittings are fully seated and finger
tight.
Tubing damaged or broken
Replace tubing.
Excessive back pressure
Remove/reduce restriction in fluid path
(e.g., kinked or blocked tubing).
Syringe or valve has exceeded its
useful life.
(Some valves have a “weep hole”
located at bottom of valve behind
the syringe port. Fluid coming from
this location indicates valve failure.)
Replace syringe or valve.
See "Replacing syringe" (page 96) or
"Replacing valve" (page 98).
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