Troubleshooting
6-4
Part 1089210A04
E 2010 Nordson Corporation
Corrective ActionPossible CauseProblem
Fault Message 16:
FAULT LOW LAMPHEAD
PRESSURE
Pressure Fault
Lamphead air pressure is
below 5.0 in. WC
Blower is off Turn the blower on.
Blower is restricted Remove the restriction blocking the
blower.
Large pressure drop in blower
ducting
Ducting to the remote blower must be
large enough with minimum bends to
supply proper air pressure. If low
pressure faults persist, consider
mounting the blower closer to the
lamphead, increasing the duct size,
or increasing the blower size.
Fault Message 17:
FAULT EXT INTERLOCK
Interlock Fault
MSTOP I/O open or under
voltage
Open external interlock Check all system interlocks and the
MSTOP connection.
I/O jumpers are set incorrectly Verify that the jumper position
matches the interlock method.
Fault Message 18:
FAULT POWER UNIT
OVER TEMP
Power Supply Overtemp
Power supply temperature
is over 65 _C
Power supply cooling fans are
restricted or not operating
Remove fan restrictions or replace
the fans.
Fault Message 18:
FAULT POWER UNIT
OVER TEMP
Power Supply Overtemp
Power supply temperature
is over 65 _C
Ambient temperature is above
specification
Reduce the ambient temperature to
5−40 _C (41−104 _F)
Fault Message 19:
FAULT RF DETECTOR
MISSING
RF Fault
System does not sense the
RF detector
RF detector is not properly
connected
Check the connections.
RF cable is damaged Check the continuity of the cable.
Replace the cable if necessary.
Fault Message 20:
FAULT RF DETECTOR
TRIP
RF Fault
High RF field detected
RF Detector is detecting a high
level of RF
Ensure the screen is not missing,
loose, or damaged.
Fault Message 22:
FAULT LAMPHEAD
OVER TEMP
Lamphead over
temperature.
Lamphead temp is over
95 _ C.
Cooling air is being restricted Make sure there is proper exhaust
air. Refer to Corrective Actions for
Fault 16.
Continued...
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