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Kohler 38RCL - User Manual

Kohler 38RCL
112 pages
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Residential/Light Commercial Generator Sets
Models:
38RCL
48RCL
48RCLA
60RCL
Controller:
RDC2
TP-6811 7/16d
Service

Table of Contents

Other manuals for Kohler 38RCL

Questions and Answers

  • M
    Martin MaysSep 14, 2025
    How to troubleshoot no AC output on a Kohler Inverter?
    • A
      Alejandra WallaceSep 14, 2025
      If your Kohler Inverter has no AC output, first ensure that the AC circuit breaker is in the ON position. If the breaker is tripping, it could be due to an overload; try reducing the load on the generator set. If the breaker trips due to a short circuit or if the engine fuse is blown, contact an authorized Kohler distributor/dealer for service.
  • A
    Amanda PowellAug 22, 2025
    What to do if my Kohler 38RCL cranks but won't start?
    • R
      Renee MedinaAug 23, 2025
      If your Kohler Inverter cranks but doesn't start, starts hard, lacks power, or operates erratically, consider these potential causes: * A clogged air cleaner. Clean and/or replace the air cleaner. * A weak or dead battery. Recharge or replace the battery. * Poor battery connection. Clean and tighten the battery connections. * A loose spark plug wire connection. Check the spark plug wires. * Low oil pressure shutdown. Check for oil leaks and the oil level, adding oil if necessary. * Insufficient fuel pressure. Check the fuel supply and valves. * A blown engine fuse. Replace the fuse; if it blows again, contact an authorized Kohler distributor/dealer. * Engine malfunction. Contact an authorized Kohler distributor/dealer.
  • C
    courtney25Aug 25, 2025
    How to fix a Kohler Inverter when it does not crank?
    • A
      Alison ElliottAug 25, 2025
      If your Kohler Inverter generator set does not crank, it might be due to a weak or dead battery. Try recharging or replacing the battery. Also, check the battery connections to ensure they are properly connected. A blown fuse could also be the culprit, so replace the fuse. If it continues to blow, contact an authorized Kohler distributor/dealer for service. Finally, make sure the generator set is turned on by pressing the RUN button or AUTO for remote starting.
  • K
    Kenneth FlemingAug 27, 2025
    Why is there no AC output from my Kohler 38RCL Inverter?
    • B
      Bernard BradleyAug 27, 2025
      If your Kohler Inverter has no AC output, check the following: * Ensure the AC circuit breaker is in the ON position. * If the AC circuit breaker is tripping due to overload, reduce the load on the generator set. * If the AC circuit breaker is tripping because of a short circuit, contact an authorized Kohler distributor/dealer for service. * If the engine fuse is blown, replace it. If the fuse blows repeatedly, contact an authorized Kohler distributor/dealer for service.
  • S
    stephanie33Aug 31, 2025
    How to resolve low output voltage on a Kohler 38RCL?
    • T
      Taylor RossAug 31, 2025
      If you're experiencing low output or an excessive drop in voltage with your Kohler Inverter, it could be that the generator set is overloaded. Try reducing the load.
  • M
    Michelle NicholsSep 1, 2025
    What causes loss of communication to accessory modules in a Kohler 38RCL Inverter?
    • A
      andersonanthonySep 1, 2025
      Loss of communication to accessory modules in your Kohler Inverter can be caused by: * Bad connections. Check wiring and connections. Verify that cable size and length of run comply with the instructions in the Installation manual. * Low or no battery voltage. Check battery connections and the generator set battery.
  • P
    Patrick AdkinsDec 1, 2025
    Why does my Kohler 38RCL generator set stop suddenly?
    • G
      Gabrielle GarciaDec 1, 2025
      Your Kohler Inverter generator set may stop suddenly due to several reasons: * Low oil pressure shutdown. Check for oil leaks and the oil level, adding oil if necessary. * Being out of fuel. Check fuel supply. * Overcrank shutdown. Reset the controller. If the overcrank fault occurs again, contact an authorized Kohler distributor/dealer. * Blown fuse(s). Replace the fuse. If the fuse blows again, contact an authorized Kohler distributor/dealer. * Overspeed shutdown. Reset the controller. If the overspeed fault occurs again, contact an authorized Kohler distributor/dealer. * The generator set is OFF. Press the RUN button to start the engine or press AUTO to allow remote starting. * Remote stop command received from a remote switch, ATS, or OnCuer. Check the remote switch posi...
  • D
    David GoodwinSep 15, 2025
    What causes low output voltage on a Kohler Inverter?
    • C
      Crystal HernandezSep 15, 2025
      If your Kohler Inverter experiences low output or excessive voltage drop, it might be overloaded. Try reducing the load on the generator set.
  • C
    Cynthia WagnerSep 12, 2025
    How to fix all electric fans that are not operating in Kohler Inverter?
    • C
      Chelsea EdwardsSep 12, 2025
      If all electric fans in your Kohler Inverter are not working, check the fan fuses. Also, verify that the fan system's positive power supply is correctly connected to the positive (+) battery terminal.
  • M
    Marvin MartinezSep 7, 2025
    What to do if Kohler Inverter fan does not transition to high-speed at threshold temperature?
    • L
      Lisa HernandezSep 8, 2025
      If the fan in your Kohler Inverter isn't switching to high speed when it reaches the threshold temperature, start by checking the sensor's function. Inspect the harnesses from the fuse/relay terminal block to the fans and controller for any damaged leads or terminations. Evaluate the relays for proper operation, check the coil's continuity, and verify the transition at the threshold temperatures.

Summary

Safety Precautions and Instructions

Accidental Starting and Battery Safety

Covers risks of accidental starting and battery handling precautions.

Engine and Fuel System Hazards

Addresses engine backfire, fuel spills, and exhaust system safety.

Electrical and Mechanical Hazards

Details dangers of high voltage, moving parts, and short circuits.

Operational and Specific Component Safety

Covers safe practices for testing, welding, and handling heavy equipment.

Hot Parts and General Notices

Warns about hot components and provides general notices.

Introduction

List of Related Materials

Lists and provides part numbers for related manuals and literature.

Service Assistance

Contact Information and Support

Provides contact details for Kohler Power Systems support and service locations.

Section 1 Specifications

Introduction to Specifications

Overview of specification sheets and references to related manuals.

Controller and Engine Specifications

Details controller specifications and engine types, referencing service manuals.

Alternator Specifications

Lists alternator details including manufacturer, exciter, and insulation.

Service Views and Component Locations

Illustrates generator set components and their locations.

Section 2 Scheduled Maintenance

General Maintenance and Service

Covers general maintenance, engine/generator set service, and parts acquisition.

Service Schedule Overview

Details maintenance tasks and their intervals for the generator set.

Lubrication System Maintenance

Covers oil specifications, checks, and oil/filter change procedures.

Air Cleaner, Exhaust, and Ignition Systems

Procedures for air cleaner, exhaust system inspection, and ignition system service.

Battery and Fuel System Maintenance

Covers battery care, specific gravity checks, and fuel system maintenance.

Section 3 Controller

Introduction to Controller and Software

Overviews controller function, SiteTech software, and USB connection.

Controller Parameters and Settings

Details controller parameters, their groups, and settings visible in SiteTech.

Controller Firmware and Replacement

Guides on updating firmware and procedures for replacing the controller.

Controller Setup Procedures

Outlines methods for setting controller parameters after installation.

Voltage Calibration and OnCue Password

Procedures for calibrating voltage and setting the OnCue password.

Section 4 Cooling System

General Cooling System Overview

Introduces the engine cooling system, components, and safety warnings.

Radiator, Hoses, and Thermostat Maintenance

Covers cleaning radiator fins, inspecting hoses, and thermostat details.

Coolant Checks and System Draining

Details coolant inspection, filling, draining, flushing, and cleaning procedures.

Filling System and Pressure Cap

Instructions for filling the cooling system and information on the pressure cap.

Cooling Fans Operation and Troubleshooting

Explains fan operation based on temperature and provides a troubleshooting guide.

Section 5 Troubleshooting

Introduction and Start Sequence Theory

Overviews troubleshooting, theory of electronic start sequence, and initial checks.

Circuit Protection and Fuel System Issues

Addresses circuit protection, fuses, and fuel system troubleshooting steps.

Controller Access and Fault Messages

Details controller service access and lists RDC2 controller fault messages.

System Status Messages and Generator Troubleshooting

Explains status messages and provides comprehensive tables for generator set and controller troubleshooting.

Section 6 Component Testing and Adjustment

Alternator Excitation Troubleshooting

Covers low/no voltage, erratic regulation, overvoltage, and LED optic board testing.

Voltage, Frequency, and Switch Adjustments

Details voltage adjustments, frequency settings, and generator set switch testing.

Fuel System Testing and Conversion

Explains fuel system components, pressure checking, and fuel conversion procedures.

Section 7 Disassembly;Reassembly

Initial Steps and Safety Precautions

Outlines initial steps before disassembly and emphasizes safety.

Enclosure, Connection Box, and Component Removal

Details procedures for removing enclosure panels, connection box, and other components.

Alternator Removal and Service

Provides information on the alternator components and references its service manual.

Section 8 Diagrams

Schematic Diagrams

Presents schematic diagrams for the generator set's electrical system.

Wiring Diagrams

Provides wiring diagrams for generator set connections.

Appendix A Abbreviations

List of Abbreviations

Lists and defines abbreviations used throughout the manual.

Appendix B Common Hardware Application Guidelines

Hardware Application Guidelines

Provides guidelines for applying common hardware and determining bolt lengths.

Appendix C General Torque Specifications

General Torque Specifications

Lists torque specifications for American Standard and metric fasteners.

Appendix D Common Hardware Identification

Common Hardware Identification

Illustrates common screw, bolt, stud, nut, and washer styles.

Appendix E Common Hardware List

Common Hardware List

Lists part numbers and dimensions for common hardware items.

Kohler 38RCL Specifications

General IconGeneral
BrandKohler
Model38RCL
CategoryInverter
LanguageEnglish

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