Controller Warnings And Faults - Generac Mobile MFH900 Owner's Manual

Troubleshooting

Controller Warnings and Faults

See Figure 5-1 The controller indicates warnings and faults by displaying messages in the message bar (A) and/or by
displaying an icon (B, for example).
NOTE: For more information on warnings and faults, contact Generac Mobile Technical Service at 1-800-926-9786.
Icon Icon ID
Engine Stop/Shutdown Steady ON
Engine Warning
High Exhaust
Temperature (HEST)
DEF Fluid Level
Engine Emissions
Malfunction
Regen Inhibit
Engine Oil Pressure
Engine Intake
Temperature
Hydraulic Oil Level Low Fast flash (red)
34
A
Figure 5-1.
State
Steady ON
or
Slow flash
or
Fast flash
Steady ON
Steady ON (amber)
Slow flash (red)
Steady ON
or
Slow flash
or
Fast flash
Steady ON(amber)
Steady ON
Flashing
Steady ON (amber)
B
Indicated Condition
Indicates engine shutdown required for severe system
faults/events.
Used to indicate engine and emissions system
diagnostics.
Engine is NOT at idle and the engine ECU is requesting
high idle (typically, 1,200 rpm)
Control system has granted permission for high idle state
Typical when DPF is above 80% soot load
DEF fluid level is 20%
DEF fluid level is 16% or below
Indicates failure of a critical emissions component.
Engine derate:
Steady ON: 0%
•
Slow flash: 50%
•
Fast flash: 100%
•
Control system not allowing high idle that engine has
requested
Severity level 1—0% derated engine power
Severity level 3—100% derated engine power
Engine intake temperature is above 253 °F (123 °C)
IMPORTANT NOTE: Temperature above 253 °F
(123 °C) begins to deteriorate engine!
Low hydraulic oil level
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