Operation
4-12
Part 1024496_06
2014 Nordson Corporation
Monitor Melter Faults (contd)
Table 4‐3 Melter Faults
Display
Code/Sub‐code
Name Affect on Melter Cause
F1/None RTD Heaters turn off
The RTD for the component indicated has
failed or the component was disconnected
from the melter.
F2/None Under temperature Heaters turn off
The actual temperature of the component
indicated has dropped below the under
temperature delta, which was set using
parameter22.
F3/None Over temperature Heaters turn off
The actual temperature of the component
indicated has increased beyond the over
temperature delta, which was set using
parameter21.
F4/1 RAM test
Melter stops
functioning
Internal RAM failure
F4/2 Internal Clock time
Heaters remain on,
but fault condition
persists
Internal clock failure
F4/4
Internal clock battery
backed RAM
Heaters remain on,
but fault condition
persists
Battery‐backed RAM failure
F4/5 Internal clock battery
Heaters remain on,
but fault condition
persists
Battery‐backed RAM battery dead
F4/6 Analog‐to‐digital
Melter stops
functioning
RTD analog‐to‐digital converter failed
F4/7
Analog‐to‐digital
calibration
Melter stops
functioning
RTD analog‐to‐digital converter could not be
calibrated
Faulty hose or gun.
F4/8 Main board feedback
Melter stops
functioning
Communication failure between main board
and CPU
F4/A Thermostat
Melter stops
functioning
Tank or manifold thermostat is open
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
F4/E
Fieldbus
communications
failure
Alert output (if output
option 6 is selected)
Melter continues to
operate normally.
Fieldbus card failure.