2–Pump 12-Station Controllers Chapter 6: Troubleshooting 47
Problem Possible cause Solution
Defective wiring. Correct/replace wiring.
Defective terminal block.
Replace defective terminal
block.
Defective PCB. Replace defective PCB.
Output icon comes on,
solenoid doesn’t.
Defective solenoid. Replace defective solenoid.
Power supply shorting out. Repair shorting circuit.
Excessive loading on solenoids.
Verify proper solenoid use. Call
Engineering for assistance.
Controller blows fuses.
Improper fuse installed.
Replace fuse with one that has a
proper rating.
Eliminate source of static.
Excessive static.
Ground the controller properly.
Cold-boot the controller. Restore
the controller to factory defaults;
see Section 8-5 on Page 75 for
more information.
Corrupt RAM data.
Ground the controller properly.
I/O logic failing. Replace PCB.
Erratic operation.
False input signal. Increase input delay time.
No Convey alarm does not light. False input signal. Increase input delay time.
