What to do if the Kohler KSS shows a low battery backup?
- KKelly MeyerAug 1, 2025
If the Kohler Switch controller battery is low, replace it with a new one.

What to do if the Kohler KSS shows a low battery backup?
If the Kohler Switch controller battery is low, replace it with a new one.
Title page for Automatic Transfer Switches service manual.
Procedures to prevent accidental generator set starting.
Warnings and precautions regarding electrical hazards.
Guidelines for safe electrical grounding and handling.
Hazards of short circuits and removing jewelry before servicing.
Precautions for servicing transfer switches and internal components.
Safety procedures for testing live electrical circuits.
Safety guidelines for handling heavy equipment and moving parts.
Measures to prevent damage to electronic components from ESD.
Lists part numbers for related literature and manuals.
Provides contact details and methods for obtaining service and support.
Overview of preventive maintenance for transfer switches.
Procedures for internal and external inspection and service tasks.
Periodic testing procedures to ensure transfer switch reliability.
Schedule of recommended maintenance tasks and intervals.
Navigating screens to view last maintenance dates and operation info.
Procedures for resetting maintenance records, event history, and parameters.
Initial checks to perform when troubleshooting transfer switch operation.
Information about the controller's backup battery and replacement needs.
How to check the event history for faults and other events.
Checking and configuring system voltage, frequency, and phase settings.
Checking adjustable time delay settings for transfer switch operation.
Understanding functions assigned to common alarms and their indications.
Identifying and understanding ATS warnings and faults.
Tables listing faults, alarms, possible causes, and suggested checks.
A table listing controller problems, possible causes, checks, and corresponding sections.
Basic checks for transfer switch mechanism problems.
Table of potential problems, causes, and remedies for transfer switch issues.
Procedures for verifying power to the ATS and checking source voltage.
Using millivolt drop test to identify damaged contacts.
Procedure for testing rectifier diodes using an ohmmeter.
Procedures for testing solenoid coil resistance and operation.
Description of the user interface pushbuttons, LEDs, and display.
Identification of controller circuit boards, connectors, and components.
Procedures for checking controller power, line voltage, and backup battery.
Explanation of controller power-up and source failure operational sequences.
Procedures for testing generator set startup and simulated source failures.
How to schedule and run exercise runs for the generator set.
Procedure for checking engine start contacts and troubleshooting.
Description and function of controller DIP switches for setup.
Procedures for calibrating voltage and current sensing.
Testing the operation of position microswitches.
Information on the PTIB and its relays.
Procedures for transferring configuration files and application code via USB.
How to download and install new controller application code.
Procedures for replacing the controller, including configuration and safe handling.
Introduction to component replacement for KGS/KGP models.
Procedures for removing and replacing contact assemblies for 800-1200, 1600-2000, and 3000 Amp models.
Procedure for removing and replacing auxiliary switches.
Introduction to component replacement for KSS standard-transition switches.
Procedures for replacing microswitches on 40-260 Amp and 400-600 Amp models.
Procedure for replacing the power panel.
Procedure for replacing arc chutes.
Procedure for replacing the limit switch assembly.
Procedures for replacing solenoids and rectifiers on 40-225 Amp and 400-600 Amp models.
Introduction to component replacement for KSP programmed-transition switches.
Procedures for disassembling, reassembling, and replacing components on 100-400 Amp KSP models.
Procedures for replacing components on 600 Amp KSP models.
A list of abbreviations and their meanings found in the manual.
Lists items shown in the various View screens for quick reference.
Lists items shown in the various Setup screens for quick reference.
Guidelines for good system design and wiring practices to minimize noise.
Discusses five types of circuits and their noise emission/rejection capabilities.
Information on identifying proper fastening techniques and bolt/screw length.
Guidelines for using washers and nuts with common hardware.
Visual guide to acceptable hardware combinations and types.
Torque specifications for American Standard fasteners.
Torque specifications for metric fasteners.
Identification of common screw, bolt, stud, nut, and washer styles.
Explanation of fastener hardness grades and sample dimensions.
List of part numbers and dimensions for American Standard hardware.
List of part numbers and dimensions for Metric hardware.