Nordson DuraBlue II - Page 116

Troubleshooting
6-4
Part 1126931_01
 2018 Nordson Corporation
Melter Faults (contd)
Table 6‐1 Melter Faults
(contd)
Display
Code/Sub‐code
Name Affect on Melter Cause Corrective Action
F4/7
Analog‐to‐digital
calibration
Melter stops
functioning
Failed hose or gun
RTD analog‐to‐digital
converter could not be
calibrated (grounded
RTD in system)
Replace hose or gun.
Note: Set setpoint to
zero to avoid F1 fault.
Replace main board or
ribbon cable, or CPU
F4/8
Main board
feedback
Melter stops
functioning
Communication failure
between main board
and CPU
Replace main board,
ribbon cable, or CPU
F4/9
Expansion board
feedback
Melter stops
functioning
Communication failure
between expansion
board and main board
Check the ribbon cable
connections between
the expansion board
and the main board.
F4/A Thermostat
Melter stops
functioning
Tank or manifold
thermostat is open
Replace thermostat, J7
harness, or main board
F4/d
Communications
with optional I/O
card
Heaters remain on,
but fault condition
persists
Communication failure
between CPU and the
optional I/O card
Replace the I/O card or
CPU
F4/E
Fieldbus
communications
failure
Alert output (if output
option 6 is selected)
Melter continues to
operate normally.
Fieldbus card failure.
Replace the Fieldbus
card