Troubleshooting
6-2
Part 1032059B
E 2003 Nordson Corporation
Manual 41-DURABLUE-MA-02
Melter Faults
Table 6-1 lists the four types of melter faults, potential causes, and expected
corrective actions.
Table 6-1 Faults
Fault
Code/Sub-code
Fault Name Cause Corrective Action
F1/None RTD
The RTD for the component indicated has
failed or the component was disconnected
from the melter.
Replace RTD
Check hose/gun connections
See flowchart T.2
F2/None Under temperature
The actual temperature of the component
indicated has dropped below the under
temperature delta, which was set using
parameter 22.
Check for conditions that may
cause a drop in ambient
temperature
Raise the set-point temperature of
the component
Replace RTD
See flowchart T.2
F3/None Over temperature
The actual temperature of the component
indicated has increased beyond the over
temperature delta, which was set using
parameter 21.
Replace RTD
See flowchart T.2
F4/1 RAM test Internal RAM failure Replace CPU
F4/2 Internal Clock time Internal clock failure Replace CPU
F4/4
Internal clock battery
backed RAM
Battery-backed RAM failure Replace CPU
F4/5 Internal clock battery Battery-backed RAM battery dead Replace CPU
F4/6 Analog-to-digital
RTD analog-to-digital converter failed Replace main board or ribbon
cable
F4/7
Analog-to-digital
calibration
RTD analog-to-digital converter could not be
calibrated
Replace main board or ribbon
cable
F4/8 Main board feedback
Communication failure between main board
and CPU
Replace main board, ribbon cable,
or CPU
F4/A Thermostat
Thermostat is open Replace thermostat, XP6 harness,
or main board