Nordson PURBlue EC - Fault Numbers

Troubleshooting
6-2
P/N 7135268B
E 2008 Nordson Corporation
PURBlue EC
Fault Numbers
Display
Code/subcode
Name Effect Cause Corrective action
F1 / None
RTD
(resistance
temperature
detector)
The RTD for the component
indicated has failed or the
component was disconnected from
the melter.
Replace RTD
Check hose/gun connections
F2 / None
Undertempera-
ture
Heaters turn off
The actual temperature of the
component indicated has dropped
below the undertemperature delta,
which was set using parameter 22.
Check whether external factors
have caused the ambient
temperature to fall
Replace RTD
F3 / None
Overtempera-
ture
The actual temperature of the
component indicated has increased
beyond the overtemperature delta,
which was set using parameter 21.
Replace RTD
F4/1
RAM (random
access
memory)
Test
Melter stops
functioning
Internal RAM failure Replace CPU
F4/2
Realtime clock
Time
Internal clock failure Replace CPU
F4/4
Realtime clock
Battery-backed
RAM
Heaters remain
on, but fault
condition
persists
Battery-backed RAM failure Replace CPU
F4/5
Realtime clock
Battery
p
Battery dead Replace CPU
F4/6 Analog-digital
RTD analog-digital converter failed Replace main board or CPU
F4/7
Analog-digital
calibration
Melter stops
RTD analog-digital converter could
not be calibrated
Replace main board, ribbon cable
or CPU
F4/8
Main board
feedback
M
e
l
ter stops
functioning
Communication failure between
main board and processor
Replace main board, ribbon cable
or CPU
F4/A Thermostat
Open reservoir, grid or hopper
thermostat
Replace thermostat, cable harness
or main board
F4/d
Optional I/O
expansion
board
Heaters remain
on, but fault
condition
persists
Communication failure between
processor and optional I/O
expansion board
Replace I/O expansion board or
CPU
F4/E
Field bus
communication
failure
Alarm output (if
output option 6
is selected)
The melter
continues to
function
normally
Field bus board failure Replace field bus board