BWT bestsoft 4 User Manual (English)

Questions and Answers:

M
Mark OrrAug 4, 2025
What to do if my BWT bestsoft 4 displays an error code or the display is blank?
- L
  Lorraine RuizAug 4, 2025
  If your BWT Water System's electronic display is showing an error code “Err 1” or “SALt” and an audible alarm is sounding, or if the digital display is blank, first ensure all connections are secure. Then, turn the power off for 10 seconds and turn it back on to allow the system to reset. If the low salt alarm is active, fill the brine cabinet with salt and press the [SET] key to reset the salt alarm to full capacity. Finally, verify that the power is on and all connections are secure.
S
Scott McbrideAug 10, 2025
How to fix BWT bestsoft 4 if water remains hard?
- J
  Jack Howard Jr.Aug 10, 2025
  If your BWT Water System is still producing hard water, ensure there is a minimum of 150 mm of salt in the brine cabinet and that the power is on with secure connections. Verify that the softener is online by closing the bypass valve and opening the inlet and outlet valves. If needed, manually restart the regeneration process. Also, check and reset the hardness setting if it is incorrect.
H
heather95Aug 14, 2025
What to do if BWT bestsoft 4 brine cabinet overflows?
- T
  Toni ClaytonAug 14, 2025
  If the water level in your BWT Water System's brine cabinet reaches overflow, check that the line pressure is within the specified range: 1.7 - 5.0 bar for the UK / 1.0 - 8.0 bar for EU. Use a pressure gauge connected to a water outlet to verify. If the pressure is outside this range, fit a pressure reducing valve or booster pump as required. Also, inspect the drain line to ensure it is not kinked, blocked, or frozen. Finally, confirm that the power is on and the connections are secure.
J
Jason JacksonAug 19, 2025
Why is there no water coming from my BWT bestsoft 4?
- J
  julie90Aug 19, 2025
  If there is no water coming from your BWT Water System, first ensure that the mains stop valve is open. Also, check that the inlet and outlet valves of the water softener are open.
M
Miguel CainAug 25, 2025
What to do if BWT bestsoft 4 Water System constantly drains water?
- J
  John RoseAug 26, 2025
  If water is constantly running from the drain of your BWT Water System, check if the unit is in recharge mode. If it is, this is normal; wait until the recharge is complete.
B
Barbara JonesAug 29, 2025
How to fix BWT bestsoft 4 Water System regenerating at the wrong time?
- R
  Robert AshleyAug 30, 2025
  If your BWT Water System regenerates at the wrong time, reset the present time on the unit.

BWT bestsoft 4 Specifications

General

Bypass	integrated
Connection size (in/out)	1"
Type	Softener
Technology	Ion exchange
Regeneration	Automatic
Water Hardness Reduction	Yes

Summary

1 Introduction

1.1 General comments

Provides essential guidance on reading and following the operating instructions for safe and correct use of the equipment.

1.2 Scope of delivery

Lists all components included in the package for the water softener system.

1.3 Safety instructions

Outlines critical safety precautions, warnings, and advice to prevent hazards during operation and maintenance.

2 Quick Operation

2.1 Display and control elements

Describes the user interface elements, including display lines and control buttons for operation.

2.2 Standard factory settings

Details the default configurations for regeneration time and water hardness settings.

2.3 Initial softener settings / Setting the time of day

Guides users through the initial setup process, including setting the current time.

2.4 Programming procedure

Explains the step-by-step process for programming the water softener, including time, hardness, and recharge settings.

3 Installation

3.1 Installation requirements

Specifies essential prerequisites, guidelines, and environmental conditions for proper installation.

3.2 Initial commissioning

Details the steps and checks required for the initial setup and activation of the water softener.

3.3 Installation and operation considerations

Covers important factors for positioning, connecting, and operating the softener, including water pressure.

3.4 Installation Layout

Provides a visual diagram and key for understanding the plumbing connections and layout of the system.

3.5 Technical overview of device

Presents a summary of the device's technical specifications and key components.

3.6 Installing your softener

Offers detailed instructions on the physical installation process, including positioning and connections.

4 Operation

4.1 Functions and features

Explains the core functionalities, intelligent regeneration, and optional features of the water softener.

4.2 Operation (workflow)

Describes the typical daily operation, salt usage, and how to interpret the display indicators.

4.3 Setting the hardness of blended water

Guides users on how to test and adjust the blended water hardness using the blending valve.

5 Maintenance

5.1 Maintenance work

Details the essential checks and tasks required for regular maintenance to ensure optimal performance.

5.2 Operator responsibilities

Outlines the duties and checks that the operator must perform for proper functioning and warranty.

5.3 Maintenance & wearing parts

Covers the replacement of wearing parts and recommends professional servicing.

5.4 Disposal and environmental information

Provides guidance on end-of-life disposal and environmental considerations for the softener.

6 Trouble shooting

7 Technical data

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BWT bestsoft 4 User Manual

Table of Contents