Section 4 Controller; Introduction; Rdc And Dc Generator Set/Transfer Switch Controllers; Controller Power - Kohler 14RES Manual

4.1 Introduction

This section covers
adjustment, and replacement of the RDC and DC
controllers. See Section 3 for troubleshooting
procedures.
See the service view in Section 1.7 for the controller
location.
4.2 RDC and DC Generator Set/
Transfer Switch Controllers
The Residential Digital Control (RDC) and Digital
Control (DC) control the power system generator set
and Model RRT automatic transfer switch (ATS) (if
equipped). The controller receives voltage sensing
data from the ATS and operates the generator set and
transfer switch to provide standby power when utility
power is lost.
Models 14RES and 20RES are equipped with the RDC
controller. The RDC controller is equipped with arrow
buttons and a Select button, which allow controller
configuration and voltage and frequency adjustments
from the controller keypad.
Models 14RESL and 20RESL are equipped with the DC
controller. The DC controller does not allow controller
configuration and voltage and frequency adjustments
from the controller keypad.
running Kohlerr SiteTecht software is required to
configure the DC controller.
TP-6735 7/17
operation, configuration,
A personal computer

Section 4 Controller

4.3 Controller Power

The RDC and DC controllers are powered by the
generator set engine starting battery.
Note: The generator sets are equipped with factory-
installed battery chargers to prevent battery
discharge. The battery charger must be
connected to utility power.
4.3.1

Connecting the Battery/Fuse F3

The controller parameters may reset to the default
settings if the power to the controller is repeatedly
connected and disconnected
momentary contact is made when the battery is
connected during installation or service).
parameters are reset, the controller display shows
NoEC to indicate that the engine configuration (Ec)
parameter is not set. See Section 4.8.4.
To prevent controller reset when connecting or
disconnecting the battery, remove controller fuse F3
before disconnecting or reconnecting the battery
cables. See Figure 4-1 for the F3 fuse location in the
controller's service access area.
Service Access Area
1. Controller's service access area (remove cover)
2. Controller fuse F3
Figure 4-1 Fuse F3 Location (RDC shown)
(for example, if
If the
1
2
Section 4 Controller 37