Operation
4-12
Part 1032059B
E 2003 Nordson Corporation
Manual 41-DURABLUE-MA-02
Monitor Melter Faults (contd)
How F4 Faults are Handled
When the melter detects an F4 fault:
1. The ready LED turns off and the red fault LED turns on.
2. All of the component key LEDs (tank, hose, and gun) turn off.
3. The right display indicates F4.
4. The left display indicates a sub-code. Sub-codes classify the fault as
being fatal or nonfatal. The affect on the melter of each of these two
classes of F4 faults is:
Fatal—The fault LED turns on and stays on and the melter stops
functioning completely.
Nonfatal—The fault LED turns on for five seconds, but the heaters and
pump continue to operate normally. Nonfatal faults only affect the
internal clock.
Refer to Section 6, Troubleshooting, for information about diagnosing F4
faults.
5. The melter records the fault in the fault log. Refer to To review the fault
log, later in this part.
To put the melter back into operation
1. Diagnose and correct the fault condition. Refer to Section 6,
Troubleshooting, for information about diagnosing and correcting fault
conditions.
NOTE: When a fatal F4 fault exists, the control switch will not function.
Remove power to the melter at the local disconnect switch.
2. Return the melter to the automatic scan mode by pressing the Setup
key twice.
3. Cycle the control switch.
4. Press the Heater key to turn on the heaters.
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