Troubleshooting; Fault Led/Red Status Led - Nordson Mesa Fulfill Customer Product Manual

A-10
RetroFit Refill System with Nordson Level Sensor

Troubleshooting

Fault LED/Red Status LED

Number of
Red Flashes
(DS3) and
Panel Fault
LED
1 Over­fill fault. Unit did not fill in the allowed
time.
2 Blown Fuse. The fuse supplying 24V to the
outputs is blown.
3 Shorted Cable. There is a problem with the
sensor cable.
4 Communications failure. There is a problem
with the communications to the CPU board
(integrated unit only)
5 RTD shorted. The temperature compensation
RTD is electrically shorted.
6 Internal memory failure. Unit was not able to
store calibration settings.
Part 1121938_02
The diagnostic fault messages (red flashes) for the STATUS LED (DS3,
located on Refill PCA) are listed below. These flash codes are also
performed on the FAULT LED located on the membrane panel.
Diagnostic Action Required
Check adhesive level in bin. Check
hose lines for blockage. Increase overfill
timer value.
Find and fix the source of the excessive
current draw and replace the fuse (2
Amp max.)
If sensor was calibrated, replace sensor.
If sensor needed calibration, calibrate
sensor. If persists, replace sensor.
Check cable between the Refill board
and the CPU board. If this is a RetroFit
unit, check DIP switch settings on Refill
board.
Replace sensor
Replace Refill board if fault persists
E 2013 Nordson Corporation