MQ Power DCA300SSJU4F3 Operation Manual page 61

If the diesel exhaust fluid (DEF) symbol (Figure 86) is
displayed during ECU controller operation, it indicates the
following:
„ DEF tank level is below 10%. Reference Table 15, DEF
Level System Action System.
„ DEF quality is poor. Check DEF tank level and check
active diagnostics trouble codes (DTC).
ECU
Series 800 Controller
DEF STAT
Alarm Screen
Option
Acknowledge Change
Figure 86. ECU DEF State Pre-Alarm
NOTICE
Models equipped with the 845 Series ECU Controller
will enter emergency shutdown when the DEF level
has reached 0% and emergency protective measures
are necessary. When this condition exist, the unit can
only be restarted after the ESCAPE MODE is activated
and the unit will run for 30 minutes. Reference "Escape
Mode" section in this manual.
DEF Level
Controller Message
DEF Symbol
Pre-Alarm Lamp
Shutdown Lamp
DCA300SSJU4F2/F3 60 HZ GENERATOR• OPERATION MANUAL — REV. #2 (04/18/22) — PAGE 61
Engine Started
Shutdown
Pre-Alarm
Program
Exit
Table 15. DEF Level System Action System
Over 10% Below 10%
— DEF<10% Tank Level DEF<10% Tank Level
—
— —
— —
DIESEL EXHAUST FLUID (DEF)
The amount of fluid in the DEF tank will be shown on the
ECU Controller main screen during operation. The symbol
shown in Figure 87 will be shown on the ECU monitor
indicating the level of fluid in the DEF tank.
Figure 87. DEF Tank Level Guage
0%
Blinking
ON
—
MAINTENANCE
E
DEF
Empty or After 4 hrs. From 0%
DEF Tank Empty Level
ON
Engine Shutdown
F
Blinking
ON
ON