MQ Power WHISPERWATT DCA150SSJU4F2 Operation Manual page 61

If the diesel exhaust fluid (DEF) symbol (Figure 84) is
displayed during ECU controller operation, it indicates the
following:
„ DEF tank level is below 10%. Reference Table 16, DEF
Level System Action System.
„ DEF quality is poor. Check DEF tank level and check
active diagnostic trouble codes (DTC).
ECU
Series 800 Controller
DEF STAT
Alarm Screen
Option
Acknowledge Change
Figure 84. 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 exists, the unit can only
be restarted after the ESCAPE MODE is activated and
the unit will run for 30 minutes. Reference the "Escape
Mode" section in this manual.
DEF Level Over 10%
Controller Message
DEF Symbol
Pre-Alarm Lamp
Shutdown Lamp
DCA150SSJU4F2/F3 60 HZ GENERATOR • OPERATION MANUAL — REV. #0 (02/16/22) — PAGE 61
Engine Started
Shutdown
Pre-Alarm
Program
Exit
Table 16. DEF Level System Action System
Below 10%
— DEF<10% Tank Level DEF=0% Level Shutdown
—
ON
— —
— —
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 85 will be shown on the ECU monitor
indicating the level of fluid in the DEF tank.
E
Figure 85. DEF Tank Level Gauge
0%
Blinking
ON
—
MAINTENANCE
F
DEF
Empty or After 4 hrs. From 0%
DEF Tank Empty Level
Blinking
ON
ON
Engine Shutdown