Kärcher WT 4.000 - User Manual

carolhowardJul 29, 2025

Why is my Kärcher WT 4.000 not irrigating despite programming?

K
Kristen AriasJul 29, 2025
The irrigation might not be taking place because the water tap is closed, the battery is depleted, the battery contacts are oxidized, the filter gaskets are blocked or the irrigation programme was interrupted manually. To resolve this, open the tap, insert a new 9V battery (type 6LR61 / Alkaline), clean the contacts, clean the filter gasket or set the regulator for the irrigation duration to the desired duration, for example, 15 minutes.

Summary

General Information

Proper Use

This appliance is designed for use in private households and is not intended for commercial use.

Environmental Protection and Warranty

Recycling and Disposal Notes

Information on recycling packaging material and proper disposal of old appliances.

REACH Ingredients Information

Notes about ingredients (REACH) and where to find current information.

Operating Symbols Explanation

Explanation of the 'Caution' symbol and its meaning regarding potential hazards.

Safety Instructions

Safety Precautions

List of warnings for safe operation, including water temperature, installation, and battery use.

Operation

Appliance Components Overview

Lists and describes the numbered components of the irrigation device.

Initial Setup Steps

Step-by-step guide for initial setup, including battery insertion and connecting to a water tap.

Setting Irrigation Duration and Frequency

Instructions for setting irrigation duration and frequency, using programming mode and adjusting start times.

Programme-Controlled Irrigation

Details on automatic irrigation based on preset programmes and status checks.

Manual Irrigation Control

Instructions for starting and stopping manual irrigation cycles independently of programmed schedules.

Finish Operation

End of Season Procedure

Steps for the end of the irrigation season: turn off tap, drain, and remove device.

Maintenance and Care

Filter Gasket Cleaning

Guidance on regularly cleaning the filter gasket from the water connection under running water.

Battery Replacement Guide

Instructions for replacing the 9V battery, including when and how to close the casing.

Storage Recommendations

Steps for storing the device: drain water, remove battery, find suitable location.

Troubleshooting

Common Faults and Solutions

Table listing common faults, their causes, and recommended remedies for irrigation issues.

Technical Specifications

Product Specifications Details

Lists key technical data including operating pressure, temperatures, and battery type.

Kärcher WT 4.000 Specifications

General

Control type	Rotary
Product type	Mechanical watering timer
Product color	Black, Yellow
Built-in display	No
Number of outlets	1
Quantity per pack	1 pc(s)
Maximum watering time	120 min
Minimum watering time	1 min
Tap adapter included	Yes
Battery voltage	9 V

Weight and Dimensions

Depth	115 mm
Width	120 mm
Height	125 mm
Weight	300 g