HomeCummins/OnanCummins/Onan DFLE

Cummins/Onan DFLE Generator Set

The Cummins/Onan DFLE is a 1250 kW (1875 kVA) Diesel standby generator set powered by a Cummins/Onan KTA50 series engine. It is available at 24 V, Single Phase-phase and 60 Hz. It holds about 188 L (49.7 gal) of oil and 386 L (102.0 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 4 group-12 batteries rated 1400 CCA at 24 V. The set measures 480×12192×96 mm (18.9×480.0×3.8 in), weighs about 50800 kg (111995 lb) and produces 74 dBA at 7 m. The same KTA50 series engine also powers generator sets from AKSA.

1250 kW
Standby
50.0 L
Displacement
188.0 L
Oil capacity
4
Document types

How to read your Cummins/Onan serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power1250 kW
Standby kVA1875
Prime power1250 kW
ControllerDetectorControl, PowerCommand, PowerCommand 2100, PowerCommand 3100 (PCC)
Oil capacity188.0 L
Voltage options24 V
PhaseSingle Phase
Battery groupFour, 12 Volt
Battery cranking1400 CCA
Battery voltage24 Volts DC V
Battery quantity4
Coolant capacity386 L
Max ambient50 °C
Dimensions (L×W×H)480×12192×96 mm
Dry weight10350 kg
Sound level74.0 dBA @ 7 m

Engine

Cummins/Onan KTA50 series
Oil capacity44.7 L
Coolant capacity348.0 L
Displacement50.0 L
Aspirationturbocharged and after-cooled
Rated speed50 rpm

Maintenance & consumables

for the Cummins/Onan KTA50 series
ItemSpecCapacityPart #Interval
Air filterDry replaceable element3600 hr find
Fuel filterFS1006 Amazon eBay $39.99 PartsGeek
Fuel filterDual spin on paper element fuel filters with standard water separator1800 hr find
Oil filterLF3325 Amazon eBay $176.70 PartsGeek
Belt find
Coolant50/50 Ethylene Glycol and Water12.7 L3600 hr
Oil5W-40160.0 L3600 hr

Common questions

What is the power rating of the Cummins/Onan DFLE?

The Cummins/Onan DFLE is rated 1250 kW standby (1875.0 kVA).

What engine does the Cummins/Onan DFLE use?

The Cummins/Onan DFLE is powered by the Cummins/Onan KTA50 series engine.

What fuel does the Cummins/Onan DFLE use?

The Cummins/Onan DFLE runs on Diesel.

What is the oil capacity of the Cummins/Onan DFLE?

The Cummins/Onan KTA50 series engine in the Cummins/Onan DFLE has an oil capacity of 44.7 liters.

What oil filter does the Cummins/Onan DFLE use?

The Cummins/Onan DFLE uses oil filter part number LF3325.

What fuel filter does the Cummins/Onan DFLE use?

The Cummins/Onan DFLE uses fuel filter part number FS1006.

Troubleshooting

76

Fault codes

CodeMeaningRemedy
1131Battle Short mode is enabled.
1416An overridden shutdown fault occurs, but the genset does not shut down.
234Overspeed fault.
1433Emergency Stop fault.
1434Remote Emergency Stop fault.
121Speed Signal Lost fault.
2335Excitation Fault.
1123A shutdown occurs immediately after moving the customer installed Battle Short switch to OFF with an active but overridden shutdown fault or a shutdown fault that was overridden at any time.
101Engine continues to operate at reduced RPM.
102Engine shuts down and will not crank.Indicates local or remote Emergency Stop. To reset the local Emergency Stop button: Pull the button out or turn the switch clockwise (button with arrow) and allow it to pop out. Move the Run/Off/Auto switch to Off. Press the Reset switch. Select Run or Auto, as required.
200Shutdown lamp lights.Indicates engine oil pressure has dropped to an unacceptable level. If generator is powering critical loads and cannot be shut down, wait until next shutdown period then follow 201 Low Oil Pressure procedure. If engine can be stopped, follow 201 procedure. To check oil pressure, access Oil Pressure menu prior to clearing the fault.
210Warning lamp lights.Indicates set is in standby mode but is not operating. Warning occurs when engine coolant temperature is 70 F (21 C) or lower. NOTE: In applications where the ambient temperature falls below 40F (4C), Low Engine Temp may be indicated even though the coolant heaters are operating. Indicates engine coolant heater is not operating or is not circulating coolant. Check for the following conditions: a. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. c. Contact an authorized service center if none of the above.
220Indicates engine coolant level has fallen below the trip point. Shutdown lamp lights.A. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Reset control and restart after locating and correcting problem. Contact an authorized service center.
221Engine will not crank. Shutdown lamp lights.A. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. b. Discharged or defective battery. Recharge or replace the battery. c. Contact an authorized service center for service of starter and starting system.
222Engine stops cranking. Shutdown lamp lights.A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary. c. Check for dirty or plugged air filter and replace if necessary. d. Reset the control and restart after correcting the problem. Contact an authorized service center if none of the above.
223Engine runs and then shuts down. Shutdown lamp lights.Contact an authorized service center.
230Battery voltage is below 24 VDC. Warning lamp lights.A. Discharged or defective battery. Check the battery charger fuse. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Contact an authorized service center if none of the above.
231Battery voltage exceeds 32 VDC. Warning lamp lights.Contact an authorized service center.
232Battery voltage drops below 60% of nominal for two seconds during starting. Warning lamp lights.Discharged or defective battery. See Warning message 230, LOW DC VOLTAGE.
240Day tank fuel supply is running low. Warning lamp lights.Check fuel supply and replenish as required.
241Fuel supply is running low. Warning lamp lights.Check fuel supply and replenish as required.
250PCC memory error. Data corruption of critical operating parameters. Shutdown lamp lights.Contact an authorized service center.
251PCC memory error. Data corruption of noncritical operating parameters. Warning lamp lights.Contact an authorized service center.
260Customer defined input is closed to ground (Shutdown). Shutdown lamp lights.Contact an authorized service center.
301One or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. Shutdown lamp lights.Contact an authorized service center.
135Oil Pressure Sensor High
141Oil Pressure Sensor Low
143Pre-Low Oil Pressure Sensor
144Coolant Temperature Sensor High
145Coolant Temperature Sensor Low
146Pre-High Cool Temp
151High Coolant Temp
197Low Coolant Level
235Low Coolant Level
359Fail to Start
415Low Oil Pressure
441Low Battery Voltage
442High Battery Voltage
1124Delayed Shutdown
1244Engine Normal Shutdown
1311Customer Inputs #1
1312Customer Inputs #2
1317Customer Inputs #3
1318Customer Inputs #4
1334Crit Scaler OR
1335Non-Crit Scaler OR
1417Power Down Failure
1435Low Coolant Temperature
1438Fail to Crank
1442Weak Battery
1443Battery Failed
1444KW Overload
1445Short Circuit
1446High AC Voltage
1447Low AC Voltage
1448Under Frequency
1449Over Frequency
1461Loss of Field
1466Modem Failure
1468Network Error
1469Speed/Hz Match
1471Over Current
1472Over Current
2336Memory Error
2341High Control Temperature
2342Too Long in Idle
2967Governor Fault
2968AVR Fault
2969LON Failure
2972Field Overload

Symptoms & remedies

SymptomCauseRemedy
Engine does not startPlace the O/Manual/Auto switch in the O position and press the Fault Acknowledge/Reset button. Before attempting to restart, wait two minutes for the starter motor to cool and then repeat the starting procedure. If the engine does not run after a second attempt, refer to the Troubleshooting section.
Engine cold (Code 1435) messageThe engine jacket water coolant temperature falls below 70°F (21°C)Check the coolant heaters for proper operation. If the coolant heaters are operating properly, other precautions may be necessary to warm the engine before applying a load.
Control does not power up when the Run/Off/Auto switch is set to Run or the Self Test switch is pressed.There is no DC power to the control.A. Check for battery disconnected, discharged, or improperly connected. b. Fuse F1 (20A/32V, Type 3AG) may be open. Replace with the same type.
Non-Automatic lamp flashes.Indicates Run/Off/Auto switch is not in the Auto position. This will prevent automatic starting if an automatic transfer switch is used. Move the Run/Off/Auto switch to the Auto position for automatic operation.
Warning Status Indicator: This yellow lamp is lit whenever the control detects a warning condition.After the condition is corrected, warning indicators can be reset by pressing the Reset switch. (It is not necessary to stop the generator set.) In auto mode, warning indicators can also be reset by cycling the remote reset input after the condition is corrected.
Shutdown Status Indicator: This red lamp is lit whenever the control detects a shutdown condition.After the condition is corrected, shutdown indicators can be reset by turning

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

54
Part #DescriptionQtySystem
0300-4623-29DFLB (600V)1Current transformer PartsGeek
0300-4623-33DFLE (600V)1Current transformer PartsGeek
0300-4623-52DFLB BR (0-480V)1Current transformer PartsGeek
0300-4623-54DFLC BR (0-480V)1Current transformer PartsGeek
0300-4623-57DFLE BR (0-480V)1Current transformer PartsGeek
140-2096Element, Primary (Outer)2Air filter PartsGeek
140-2467Element, Safety (Inner)2Air filter PartsGeek
140-2501Cleaner, Air (Disposable)2Air filter PartsGeek FridayParts $152.02
140-2502Band, Mounting – Air Cleaner4Air filter Amazon eBay PartsGeek
140-2503Bracket, Mounting1Air filter PartsGeek
140-3163Cleaner, Air (No Replaceable Element)2Air filter Amazon eBay $23.99 PartsGeek
140-3230Cleaner, Air (Includes Elements - See Ref. No. 25 and 26)2Air filter Amazon eBay PartsGeek FridayParts $856.89
502-1162Connector, Hose (3/8")2Hose PartsGeek
503-0685Clamp, Hose2Hose PartsGeek
503-1484Elbow, Hose (45 Deg) (7" ID)2Hose PartsGeek
503-1620Hose – Bulk (3/8" ID) (Order by the Foot)-Hose PartsGeek
503-1870-11Clamp, Hose2Hose PartsGeek
503-1870-12Clamp, Hose2Hose PartsGeek
960-0504PCC Control Service Manual*Service manual PartsGeek
960-0507Detector Control Service Manual**Service manual PartsGeek
FS1216Fuel/Water Sep Spin-On2Fuel filter Amazon eBay $44.99 PartsGeek
LF3325Lube, Full-Flow Spin-On5Oil filter Amazon eBay $176.70 PartsGeek
140-1260Fitting, Safety Filter2Service part / kit Amazon eBay $35.00 PartsGeek
140-1548Indicator, Service2Service part / kit Amazon eBay PartsGeek
140-2097Cleaner1Service part / kit PartsGeek FridayParts $856.89
140-2098Hood, Air Inlet (Includes Mounting Clamp)1Service part / kit Amazon eBay $49.99 PartsGeek
140-2099Band2Service part / kit Amazon eBay $19.99 PartsGeek
140-2395Tube, Air Inlet1Service part / kit PartsGeek
140-2504-01Bracket - Right Side1Service part / kit PartsGeek
140-2504-02Bracket - Left Side1Service part / kit PartsGeek
140-2508Tube, Air Inlet (7" x 9" - 3/4")2Service part / kit Amazon eBay PartsGeek
140-2509Tube, Air Inlet2Service part / kit PartsGeek
140-2515Bracket, Mounting1Service part / kit PartsGeek
140-2519Tube, Air Inlet2Service part / kit PartsGeek
140-2521Tube, Air Inlet2Service part / kit PartsGeek
140-2528Shield – Air In Heat1Service part / kit PartsGeek
309-0635-02Valve, Check2Service part / kit PartsGeek
332-2634Clamp, Retainer 4 Prior To December 1996 Production (Mounted On Top And Side Of Control Box Wrapper)10Service part / kit PartsGeek
503-1717Elbow, Reducer (45 Deg) (7" ID to 6" ID)2Service part / kit PartsGeek
503-1720Insert, Reducer (6" OD to 5-1/2" ID)2Service part / kit PartsGeek
505-0017Bushing, Pipe – Reducer (3/8" to 1/4")1Service part / kit PartsGeek
505-0376Elbow – 45 Deg (3/8")2Service part / kit PartsGeek
518-0548-24Clamp, Retainer Begin December 1996 Production (Mounted On Top And Side Of Control Box Wrapper On The Side Towards The Control Box Cover)20Service part / kit PartsGeek
518-0548-42Clamp, Retainer 4 Prior To December 1996 Production (Mounted On Top And Side Of Control Box Wrapper)20Service part / kit PartsGeek
526-0030Washer, Flat (3/8")1Service part / kit PartsGeek
800-0055Screw, Cap – Hex Head (3/8–16 x 2-1/4")8Service part / kit PartsGeek
800-0094Screw, Cap – Hex Head (1/2–13 x 2")1Service part / kit PartsGeek
821-0029Screw, Self–Locking – Hex Washer Head (3/8–16 x 3/4")4Service part / kit PartsGeek
821-0033Screw, Self–Locking – Hex Washer Head (7/16–14 x 3/4")8Service part / kit PartsGeek
821-5004-03Screw, Self-Locking – Hex Washer Head (3/8–16 x 1")2Service part / kit PartsGeek
870-0281Nut, Self-Locking – Hex Washer Head (3/8–16)2Service part / kit PartsGeek
960-0606Service part / kit PartsGeek
960-0608Service part / kit PartsGeek
F-2061Installation of two C1400 D5 generator setsService part / kit PartsGeek

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime
Prime25%111.029.2
Prime50%180.047.6
Prime75%257.068.0
Prime100%330.087.3
Standby
Standby25%124.032.8
Standby50%211.055.8
Standby75%301.079.4
Standby100%392.0103.6

Available documents

Spec sheet — Cummins-1500-DFLE KTA50-G9 (Cummins/Onan)Spec sheet — Cummins-installation-manual-DFAA-DFAB-DFAC-DFBC-DFBF-DFBD-DFBE-DFBF-DFCB-DFCC-DFCE-DFEB-DFEC-DFED-DFFA-DFFB-DFGA-DFGB-DFGC-DFJA-DFJB-DFJC-DFJD-DFLA-DFLB-DFLC-DFLD-DFLE-DFMB-DQAA-DQAB-DQBA-DQBB (Cummins/Onan)Spec sheet — S-1369 (Cummins/Onan)Operator's manual — 960-0152 Cummins DFLB C D DFMB Operator's Manual (7-2010) (Cummins/Onan)Parts manual — 0960-0296 I10 202106 (Cummins/Onan)Parts manual — Cummins-DFLB-DFLC-DFLE-generator-set-parts-manual (Cummins/Onan)Service manual — 960-0507C Cummins DFAA thru DFMB DQAA Service Manual (2-2004) (Cummins/Onan)Service manual — 960-0519C Cummins DFAB DFB DFC DFG DFLC Series Service Manual (2-2004) (Cummins/Onan)Service manual — 960-0630C Cummins DFGB DFGE DFLB DFLC DFLE Installation Manual (2-2004) (Cummins/Onan)Service manual — Cummins-3100-PowerCommand-DFAA-DFAB-DFAC-DFBC-DFBD-DFBE-DFBF-DFCB-DFCC-DFCE-DFEB-DFEC-DFED-DFFA-DFFB-DFGA-DFGB-DFGC-DFJA-DFJB-DFJC-DFJD-DFLA-DFLB-DFLC-DFLD-DFLE-DFMB-DQAA-DQAB-DQBB (Cummins/Onan)Service manual — Cummins-DFLB-DFLC-DFLE-generator-set-operator-manual (Cummins/Onan)