Troubleshooting
6-25
Part 1073401_07
E 2021 Nordson Corporation
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Fault LED is illuminated >
F2 fault exists >
Tank key LED is illuminated >
No hot melt was recently added to the
tank
T.2.3
?
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Is the resistance correct for
the tank heaters (2) and
the pump heater (1)?
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Is the voltage across the
downstream side of fuses
F1 and F2 on the main
board 180-265 VAC?
See Figure 6‐1.
Are the tank and pump
TRIACS functioning
properly?
?
Contact Nordson for
technical assistance.
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Are the tank and manifold
RTDs functioning properly?
Replace the tank or the
pump heater.
Refer to Section 7, Parts.
Check/correct house
voltage.
Replace the main board.
P/N 1122064
Replace the malfunctioning
RTD.
Tank ‐ P/N 1031234
Pump ‐ P/N 1031233
Stop.
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Does replacing fuses F1
and F2 on the main board
and then resetting the
melter clear the fault?
P/N 1028329
Replace the main board.
P/N 1122064
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Are any of the indicators
DS2, DS3, or DS7 on the
main board illuminated?
See Figure 6‐1.
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−
Is the power indicator for
the affected
hose/applicator
illuminated?
See Figure 6‐1.
Check the operation of the
power relay or the
thermostat.
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