Fault Shutdowns, Decision-Maker 3+ Controller - Kohler 40COZ/33CFOZ Service Manual

5.1.2 Fault Shutdowns,
Decision-Maker 3+ Controller
If the generator set does not start or stops running
because of a fault shutdown (fault lamp lit), refer to
Indicator
High engine temperature lamp High engine temperature lamp
lights
Low oil pressure lamp lights
Overspeed lamp lights
Overcrank lamp lights p g
Overcrank lamp flashes
Auxiliary lamp flashes
Auxiliary lamp lights Auxiliary lamp lights
Emergency stop, if equipped Emergency stop if equipped
Multiple lamps light (where
illumination may appear dim)
Figure 5-13 Fault Shutdown Troubleshooting Chart
TP-5737 5/01
Engine coolant temperature is above shutdown range; see Section 1, Specifications
Cooling system malfunction
Engine oil pressure is below shutdown range, see Section 1, Specifications
Governed frequency is in excess of 70 Hz (2100 rpm)
Continuous cranking is more than 45 seconds
Cyclic cranking is more than 75 seconds
Locked rotor
Speed sensor signal is absent longer than one second
No AC output is present
Battery power was reconnected or was low and then came back up again while generator
set master switch was in the RUN or AUTO position
Optional emergency stop switch is reset while the generator set master switch is in the RUN
or AUTO position
High exhaust temperature (P1-14) or auxiliary delay shutdown (P1-15) faults occur, if sensor
equipped
Overvoltage, if equipped, has occurred, voltage 15% greater than nominal voltage (for
period longer than two seconds)
Activated by customer-supplied sensing device connected to auxiliary immediate shutdown
ports (P1-17 and P1-18)
Emergency stop switch is activated (local or remote)
Emergency stop switch(es) are disconnected from controller terminals TB1-1 or 1A
Main circuit board F1 (3-amp) fuse blown. F1 fuse supplies battery voltage to a remote
annunciator and/or dry contact kit.
Figure 5-13 to identify fault conditions. Consult the
Engine Service Manual for detailed information on
correcting engine-related faults. To reset the set after a
fault shutdown, see Section 2, Operation.
Fault Condition/Causes
Section 5 Decision-Makert 3+ Troubleshooting 31