Kohler 14RES

TP-6735 7/1736 Section 3 Troubleshooting
3.6 Controller Troubleshooting
Refer to the controller troubleshooting table in this
section when troubleshooting procedures in
Section 3.5 indicate a possible controller problem.
Always check the controller configuration settings
before replacing the controller.
The RDC controller settings can be checked and
adjusted through the controller user interface or using a
personal computer and Kohlerr SiteTecht software.
The generator set installation manual contains the
instructions for checking and changing the controller
configuration. The DC controller s ettings can only be
changed using SiteTecht. See TP-6701, SiteTech
Software Operation Manual. Kohlerr SiteTecht
software is available to authorized distributors and
dealers.
Also check the controller display for fault codes and
refer to Section 4.8, Faults.
If the power to the controller is momentarily connected
and disconnected (for example, when the battery is
connected during installation or service), the controller
parameters may reset to the default settings. The
controller display shows NoEC to indicate that the
engine configuration (Ec) parameter is not set. See
Section 4.8.4, Fault Code NoEC.
The following RDC/DC controller functions require
connection to a Kohlerr Model RRT automatic transfer
switch.
D Utility v oltage display on the RDC or DC controller
D Automatic exercise initiated using the RDC down
arrow button or the DC Exercise button, loaded or
unloaded
D Ultra-quiet diagnostic test
D Loaded test initiated from the RDC or DC controller
D Engine cooldown
D Load control
D Automatic generator set startup and load transfer
when utility power is lost (also available with other
Kohler model transfer switches connected to engine
start leads 3 and 4)
Check the connection to the Model RRT transfer switch
when troubleshooting problems with the functions listed
above. See Section 4.9 for more information about
these operations. See Section 4.9.6 for connections.
Test Corrective Action Reference
Check controller settings. * Adjust controller settings as required. * Section 4.10
Check for power to the controller at lead P
(connection P1--1).
Check/replace fuse F3. If fuse blows again, check
the wiring harness for shorts to ground.
Section 5.14.2
Check connections and wiring. Tighten connections
and repair/replace wiring as needed.
Wiring
diagrams,
Section 7
Check battery and battery charger. Installation
manual.
Check controller fuse F3. Replace controller fuse. If fuse blows again, check
the wiring harness for shorts to ground.
If fuse F3 blows repeatedly in RUN mode, check the
stepper motor.
Section 5.14.2
Section 7
Section 5.9.2
Check controller fuse F2. Replace controller fuse. If fuse blows repeatedly,
check the components listed in Section 4.12.2.
Section 4.12.2
Check controller wiring and connections. Tighten connections and/or replace wiring. Wiring
diagrams,
Section 7
Check RUN and CRANK LEDs and relays. See Section 4.12 for instructions. Section 4.12
* RDC controller settings can be checked and adjusted using the controller user interface or using a personal computer running SiteTech
software. DC controller settings can only be changed using SiteTech. See TP-6701, SiteTech Software Operation Manual.
Figure 3-2 Controller Troubleshooting