Troubleshooting
6-27
Part 1073401_07
E 2021 Nordson Corporation
Fault LED is illuminated >
An F3 fault exists on a hose or applicator >
The setpoint temperature was not
changed
T.2.4
Stop. Replace the main board.
P/N 1122064
+
−
Does replacing the main
board and resetting the
melter clear the fault
Replace the CPU board.
P/N 1031179
+
−
Does the fault clear if you
switch the faulting hose/
applicator pair to a known
good hose/applicator
connector and then reset
the melter?
+
−
Does the fault clear if you
replace just the hose or just
the applicator RTD and
then reset the melter?
+
−
Have LEDs D1S/DS2 or
DS3/DS4 on the affected
hose/applicator module
stopped flashing?
See Figure 6‐1.
Stop.
Replace the main board.
Main board P/N 1122064
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