PICO
Toµch
Series Controllers
50
www.nordsonefd.com [email protected]
+1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Troubleshooting (continued)
Alarm Code Troubleshooting
NOTES:
• For troubleshooting not related to alarm codes, refer to “General Troubleshooting” on page 49.
• The
Toµch
XP controller includes the alarms shown below plus additional alarms. Refer to “Alarm Code
LCD
Code
Internal
Code
Alarm Name
Related to...
Possible Cause: Corrective Action(s)
b8
001
Valve Heater Fault
Valve
Heater failed or shorted RTD in the valve:
• Switch off the controller and wait 5 seconds
for the valve to fully discharge, then switch on
the controller. If the alarm persists, a possible
valve heater failure exists. Return the valve to
Nordson EFD or to the vendor for service.
b9
002
Stack Over
Temperature
• Valve settings
• Environment
System operating beyond its acceptable range,
typically caused by high frequency operation:
• Frequency of operation too high for duty
cycle: Lower the operating frequency
(increase CYCLE time).
• Duty cycle too high for frequency of
operation: Lower the duty cycle rate
(decrease PULSE time).
Environmental conditions slowing heat
dissipation:
• Improve valve heat dissipation.
Internal valve problem:
• Return the valve to Nordson EFD or to the
vendor for service.
b10
003
LCD Communication
Loss
Controller
Problem occurred with LCD display:
• Return the controller to Nordson EFD or to
the vendor for service.
Continued on next page
