Kohler 12RESL, Operation Manual, Page: 39 / 48

TP-6517 1/11 39 Section 5 Troubleshooting
Section 5 Troubleshooting
5.1 Introduction
Use the following charts to diagnose and correct
common problems. First check for simple causes such
as a dead engine starting battery, loose connections, or
an open circuit breaker. The charts include a list of
common problems, possible causes of the problem, and
recommended corrective actions.
If the procedures in this manual do not explain how to
correct the problem, contact an authorized distributor/
dealer. Maintain a record of repairs and adjustments
performed on the equipment. Use the record to help
describe the problem and repairs or adjustments made
to the equipment.
5.2 Controller Troubleshooting
Figure 5-1 contains troubleshooting, diagnostic, and
repair information for the DC-RET controller.
5.3 Generator Set Troubleshooting
Figure 5-2 contains generator set troubleshooting,
diagnostic, and repair information.
Check for loose
connections before replacing parts.
Fault Codes
The controller displays fault codes to aid in
troubleshooting. Fault codes, descriptions, and
recommended actions are listed in Section 2.6. If a fault
code is displayed, identify and correct the cause of the
fault condition. Then reset the controller. See Section
2.6.3.
Problem Possible Cause Corrective Action
Controller LED
display is off
No power to the controller:
The generator set has not run for 48 hours
or longer and the controller has powered
down. Controller display will automatically activate when a
remote start command is received or the generator set
master switch is moved to the RUN position. See
Section 2.3.
Controller fuse (F3) is blown. Replace the fuse. If the fuse blows again, contact the
distributor/dealer.
Low or no battery voltage. Check connections.
Check generator set battery and battery charger. See
Figure 5-2.
Generator set master switch is in the
OFF/RESET position. Move generator set master switch to the AUTO or RUN
position. In AUTO, the display will not turn on until the
first start command is received.
Generator set master switch in AUTO but no
start command has been received since last
controller reset. Controller display will activate when a remote start
command is received or the generator set master switch
is moved to the RUN position. Use the remote switch to
start generator set and activate the controller display, if
desired. See Section 2.2.2.
Figure 5-1 Controller Troubleshooting Chart