OM-2245 / Operation and Maintenance Manual
ITW GSE 4400 / 400 Hz. Generator Set
March 15, 2015
Chapter 2-4
Page 3
(1) Warning
Warning faults have no effect on the operation of the GPU. An example is an intake air restriction
fault due to a dirty filter. Although the GPU continues to operate, the fault LED is lit and the fault
text appears on the display. Pressing the
Engine
pushbutton or shutting down the GPU resets
the fault.
(2) Run Mode
Run mode faults remove power form the aircraft but do not change the operating speed of the
engine. An example is an over voltage fault. Although the contactors open and remove power
from the aircraft, the engine remains at rated speed, the fault LED is lit and the fault text appears
on the display. Pressing the
Engine
pushbutton or shutting down the GPU resets the fault.
(3) Stop Mode
Stop mode faults remove power form the aircraft and shut the engine down. An example is a low
oil pressure fault. The contactors open and remove power from the aircraft, the engine shuts
down, the Alert/Failure LED is lit and the fault text appears display. Pressing the
Engine
pushbutton or shutting down the GPU resets the fault.
8) Cummins Engine Fault Codes & Trouble Shooting
The best source of information to aid in trouble shooting Cummins engine issues is at the
quickserve.cummins.com
website. Go to this website and register up to five engine serial numbers for
free. (It is recommended that if you have more than one engine type/size, that you register one serial
number per type/size.) Once you are registered, this website gives you access to engine information,
troubleshooting assistance by fault code, parts information and service bulletin information for each serial
number/engine type that you have registered with the site.
9) Fuses
The following is a list of all of the fuses in the 4400 unit.
F1 to F9 are located on the interface board PC1.
Fuse #
Protects
rating
type
PN
F1
Display
2 amp
ATO
AP-SI2076
F2
Control Board
5 amp
ATO
AP-SI2075
F3
Exciter 24V
5 amp
ATO
AP-SI2075
F4
Contactor
5 amp
ATO
AP-SI2075
F5
Relays
2 amp
ATO
AP-SI2076
F6
Key switch (Ignition)
5 amp
ATO
AP-SI2075
F7
ECM (Dongle)
5 amp
ATO
AP-SI2075
F8
ECM Power
20 amp
ATO
AP-SI2083
F9
Exciter 180V (Out)
6.3amp
600V Cylindrical fuse
AP-SI2082
F10
Intake Air Heater Fuse
150 amp
ANL-150
FU11370
Fuse F10 is located on the Engine Air Cleaner Bracket