Kärcher RLM 4 - User Manual

Other manuals for Kärcher RLM 4

Operating Instructions444 pages

Questions and Answers

R
robert84Sep 4, 2025
What does 'CN017: Cal: signal weak' mean on Kärcher Lawn Mower and how can I fix it?
- K
  Kimberly OliverSep 4, 2025
  The 'Cal: signal weak' error during calibration of your Kärcher Lawn Mower means the loop signal is too weak, there is no loop signal, or the boundary cable is faulty. To resolve this: * Place the appliance at the prescribed calibrating position, aligned precisely at right angles. * Check the power source of the charging station by disconnecting and reconnecting the power supply. * Check the boundary cable for damage.
C
Courtney BennettSep 3, 2025
What does 'CN018: Cal: Colli- sion' mean on Kärcher Lawn Mower and how to solve it?
- A
  amysuttonSep 3, 2025
  The 'Cal: Collision' error on your Kärcher Lawn Mower during calibration means the appliance has bumped into an obstacle. To solve this, remove the obstacle.
J
James BergSep 2, 2025
How to fix 'CN012: Cal: no loop CN015: Cal: outside' error on Kärcher Lawn Mower?
- T
  tamarapattersonSep 2, 2025
  The 'Cal: no loop' or 'Cal: outside' error during calibration of your Kärcher Lawn Mower indicates that the appliance cannot find the boundary cable. To resolve this: * Check the LEDs on the charging station. * Check the power source of the charging station by disconnecting and reconnecting the power supply. * Place the appliance at the prescribed calibrating position, aligned precisely at right angles, ensuring it can drive over the boundary cable.
H
huffkennethSep 1, 2025
What does 'CN002: Lift sensor' mean on my Kärcher RLM 4 Lawn Mower and how do I resolve it?
- P
  Paul WagnerSep 1, 2025
  The 'Lift sensor' error on your Kärcher Lawn Mower indicates that the appliance cover has been deflected upwards, either by lifting or by an obstacle. To fix this, remove the obstacle.
A
Ashley HallAug 31, 2025
What does 'CN001: Tilt sensor' mean on my Kärcher RLM 4 Lawn Mower and how to fix it?
- M
  Matthew MillerAug 31, 2025
  The 'Tilt sensor' error on your Kärcher Lawn Mower means the inclination sensor has been triggered because the maximum tilt was exceeded, the appliance was carried, or the slope is too steep. To resolve this, place the appliance on a flat surface and acknowledge the fault.
T
turnerrobertAug 30, 2025
What should I do if my Kärcher Lawn Mower shows 'CN104: Battery over heating'?
- M
  Miranda FosterAug 30, 2025
  If your Kärcher Lawn Mower displays 'Battery over heating', it means the rechargeable battery has overheated (more than 60 °C), preventing discharging, or there has been an emergency switch-off by the monitoring electronic control unit. To resolve this: * Switch off the appliance and let the rechargeable battery cool down. * Do not place the appliance on the charging station.
B
brandi14Aug 29, 2025
What to do if Kärcher Lawn Mower displays 'CN119: R-Bumper de- flected CN120: L-Bumper de- flected'?
- P
  Patricia WrightAug 29, 2025
  If your Kärcher Lawn Mower displays 'R-Bumper deflected' or 'L-Bumper deflected', it means the appliance has moved onto an obstacle and cannot free itself. To solve this, remove the obstacle.
K
Keith MoodyAug 28, 2025
What to do if Kärcher Lawn Mower shows 'CN128: Recov Impos- sible'?
- L
  Lacey ChoiAug 28, 2025
  If your Kärcher Lawn Mower displays 'Recov Impossible', it indicates: * The appliance has moved onto an obstacle and cannot free itself. * The appliance is outside the designated grass surface. * The left wheel motor is blocked. To resolve this: * Remove the obstacle. * Place the appliance on the designated grass surface and correct the boundary cable's location. * Remove the blockage from the left wheel motor.
R
rose14Aug 28, 2025
Why does my Kärcher RLM 4 show 'CN011: Escaped robot'?
- R
  Richard SullivanAug 28, 2025
  The 'Escaped robot' error on your Kärcher Lawn Mower means the appliance is outside the designated grass surface. To fix this, correct the location of the boundary cable around curves and obstacles.
B
Bethany OrrAug 27, 2025
What to do if my Kärcher Lawn Mower shows 'CN005: Bumper de- flected'?
- R
  Richard MooreAug 27, 2025
  If your Kärcher Lawn Mower displays 'Bumper deflected', it means the appliance has run into an obstacle and cannot free itself. To resolve this: * Place the appliance on the free, designated grass surface. * Correct the location of the boundary cable.

Summary

ABOUT THESE OPERATING INSTRUCTIONS

Legends and signal words

Explains DANGER, WARNING, CAUTION, and IMPORTANT signal words used in the manual.

PRODUCT DESCRIPTION

Automatic mowers

Details the components and parts of the automatic lawnmower.

Symbols on the appliance

Details various safety and operation symbols used in the manual.

Control panel

Describes the buttons and functions of the control panel.

Display

Explains the information shown on the appliance's display screen.

Menu structure

Outlines the hierarchical structure of the appliance's menu system.

Charging station

Details the charging station, its components, and functions.

Integrated battery

Provides information about the appliance's integrated rechargeable battery.

Functional description

Explains how the automatic lawnmower operates and mows.

SAFETY

Intended use

Specifies the intended applications and limitations for the appliance.

Possible misuse

Lists improper uses that are not permitted and may void warranty.

Safety and protective devices

Highlights the importance of safety and protective devices for preventing injury.

PIN and PUK input

Explains how to use PIN and PUK for starting and anti-theft.

Sensors

Details the various safety sensors like lifting and bump sensors.

Safety instructions

Provides general safety guidelines for operating the appliance.

Safety of persons and animals

Outlines precautions to protect people and animals from the appliance.

Appliance safety

Details safety requirements for the appliance itself and its use.

Electrical safety

Covers safety precautions related to the appliance's electrical components and usage.

ASSEMBLY

Unpacking the machine

Instructions for carefully unpacking the appliance and checking for damage.

Planning the mowing areas

Guidance on defining and preparing the lawn areas for mowing.

Preparing the mowing areas

Steps to prepare the grass surface before installing the charging station.

Setting up the charging station

Instructions for correctly positioning and mounting the charging station.

Installing the boundary cable

Detailed steps for laying and connecting the boundary wire around the mowing area.

Connecting boundary cable to charging station

How to connect the boundary cable to the charging station.

Routing the boundary cable

Guidelines for laying the boundary cable around the lawn and obstacles.

Excluding obstacles

How to route the boundary cable around obstacles like walls or beds.

Enclosing corridors

How to create narrow sections to connect mowing areas.

Excluding downward slopes

How to exclude steep slopes using the boundary cable.

Creating loops of cable

How to create spare cable loops for future adjustments.

Typical faults in cable routing

Common issues and visual examples of incorrect boundary cable routing.

Connecting charging station to power supply

Instructions for connecting the charging station to the electrical power source.

Checking charging station connections

How to verify that the charging station connections are correct.

START-UP

Charging the rechargeable battery

Guide to fully charging the battery before the first use.

Making basic settings

Steps to configure language, time, date, and PIN upon first use.

Setting the cutting height

How to manually adjust the cutting height of the lawnmower.

Automatic calibration movement

Performing the initial calibration movement for optimal performance.

OPERATION

Starting the appliance manually

How to manually start and stop the automatic lawnmower.

Cancelling mowing

How to stop the mowing process temporarily or permanently.

Mowing the secondary area

Instructions for mowing areas separate from the main charging station area.

SETTINGS

Calling up settings - General

How to access and navigate the general settings menu.

Button tones

How to activate or deactivate audible button feedback.

Eco mode

How to enable Eco mode for reduced energy consumption and noise.

Setting the rain sensor

How to configure the rain sensor for automatic response to wet conditions.

Setting the mowing program

How to set up the general mowing schedule and parameters.

Setting entry points

How to teach the appliance specific entry points for mowing.

Setting mowing times

How to define specific mowing times for each day of the week.

Edge mowing with manual start

How to initiate edge mowing manually.

Setting secondary area mowing

How to configure mowing for secondary lawn areas.

Setting display contrast

How to adjust the display contrast for better readability.

Setting lock

How to activate a lock to prevent unauthorized setting changes.

Recalibrating

Steps to recalibrate the appliance if boundary cable changes or issues occur.

Restoring factory settings

How to reset the appliance to its original factory settings.

DISPLAYING INFORMATION

Blades service

Shows when blade service is required and how to reset the counter.

Hardware information

Displays technical appliance data like serial number and operating hours.

Software information

Shows the firmware version of the appliance.

Program information

Displays current settings, including total weekly mowing time.

Failures

Lists recent fault messages with date, time, and fault code.

MAINTENANCE AND CARE

Cleaning

Instructions for cleaning the automatic lawnmower and charging station.

Regular checks

Guidelines for weekly checks of the appliance, station, and cable.

Replacing cutting blades

Step-by-step guide on how to replace the cutting blades safely.

TRANSPORT

Transporting the appliance

How to safely transport the appliance between areas.

STORAGE

Storing the automatic lawnmower

Instructions for storing the lawnmower for winter or long periods.

Storing the charging station

How to store the charging station when not in use.

Winter storage of boundary cable

How to prepare the boundary cable for winter storage.

DISPOSAL

Disposal of Electrical and Electronic Equipment

Regulations and methods for disposing of electrical and electronic appliances.

Disposal of Batteries

Regulations and methods for disposing of used batteries and rechargeable batteries.

HELP IN CASE OF MALFUNCTION

Correcting appliance and handling faults

Table of common malfunctions, their causes, and recommended remedies.

Fault codes and troubleshooting

Lists specific fault codes, their causes, and solutions.

GUARANTEE

Warranty Information

Details the warranty coverage, conditions, and exclusions.

EU DECLARATION OF CONFORMITY

Declaration of Conformity

Declares compliance with EU directives for safety and health requirements.

Kärcher RLM 4 Specifications

General

Type	Robotic lawn mower
Cutting width	200 mm
Grass catcher	-
On/off switch	Yes
Product color	Black, Yellow
Cutting system	Rotary blades
Number of blades	4
Maximum lawn area	500 m²
Maximum working climb	45 %
Maximum cutting height	55 mm
Minimum cutting height	25 mm
Battery type	Built-in battery
Power source	Battery
Charging time	0.75 h
Battery voltage	18 V
Battery capacity	2.5 Ah
Battery life (max)	50 min

Weight and Dimensions

Depth	400 mm
Width	598 mm
Height	285 mm
Weight	8800 g
Package weight	17800 g

Related product manuals

Kärcher LMO 18-36 Battery

222 pages

Kärcher LMO 18-36

248 pages

Kärcher LMO 18-33 Battery

16 pages