Generac Mobile MFH900, Owner'S Manual

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34 Owner’s Manual for Flameless Air Heater
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).
Figure 5-1.
NOTE: For more information on warnings and faults, contact Generac Mobile Technical Service at 1-800-926-9786.
Icon Icon ID State Indicated Condition
Engine Stop/Shutdown Steady ON Indicates engine shutdown required for severe system
faults/events.
Engine Warning Steady ON
or
Slow flash
or
Fast flash Used to indicate engine and emissions system
diagnostics.
High Exhaust
Temperature (HEST) Steady ON 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 Steady ON (amber) DEF fluid level is 20%
Slow flash (red) DEF fluid level is 16% or below
Engine Emissions
Malfunction Steady ON
or
Slow flash
or
Fast flash Indicates failure of a critical emissions component.
Engine derate:
•
Steady ON: 0%
•
Slow flash: 50%
•
Fast flash: 100%
Regen Inhibit Steady ON(amber) Control system not allowing high idle that engine has
requested
Engine Oil Pressure Steady ON Severity level 1—0% derated engine power
Flashing Severity level 3—100% derated engine power
Engine Intake
Temperature Steady ON (amber) Engine intake temperature is above 253 °F (123 °C)
IMPORTANT NOTE: Temperature above 253 °F
(123 °C) begins to deteriorate engine!
Hydraulic Oil Level Low Fast flash (red) Low hydraulic oil level
A
B