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Important notice: Always keep the fitting and operating instructions
close at hand to avoid any mistakes and before carrying out any work
on the device, you should read the fitting and operating instructions
carefully and follow them. While our data sheets and brochures should
provide advice to the best of our knowledge, the content thereof is not
legally binding.
Fitting and operating instructions
BWT WS Range
Water Softener
WS Range: WS355
WS255
WS355
WS455
WS555
WS655
WS755
EN
WS455
WS555
WS655
WS755

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Do you have a question about the WS255 and is the answer not in the manual?

Questions and answers

Mark Lee
February 16, 2025

My WS355 is flashing the word “refill” There is no mention of this word in any of the manuals. Can you explain what I need to do to reset. TIA

1 comments:
Mr. Anderson
February 16, 2025

To reset the "refill" warning on your BWT WS255, follow these steps:

1. Fill the brine cabinet with salt.
2. Enter the 10 6 code "SALt."
3. Press the SET key to reset the salt alarm to full capacity.

This will clear the warning and restore normal operation.

This answer is automatically generated

Summary of Contents for BWT WS255

  • Page 1 Fitting and operating instructions BWT WS Range Water Softener WS Range: WS355 WS255 WS455 WS355 WS555 WS455 WS655 WS555 WS655 WS755 WS755 Important notice: Always keep the fitting and operating instructions close at hand to avoid any mistakes and before carrying out any work on the device, you should read the fitting and operating instructions carefully and follow them.
  • Page 2 After prolonged periods of non-use, softener will benefit from regular service - ensure inlet and outlet valves are open please see welcome pack or call BWT on and bypass valve is closed, and start a 01494 838 100 for details.
  • Page 3: Table Of Contents

    CONTENTS Page Introduction Features and Benefits PART ONE Overview of the water softening process Installation and operating considerations Typical Installation layout PART TWO 9-11 Installing your water softener 12-14 Programming procedure PART THREE Troubleshooting guide 15-16 Specification table Warranty...
  • Page 4: Introduction

    "Millennium" valve. FEATURES AND BENEFITS At the heart of your BWT WS Range Water Softener is the Millennium valve controlled by the BWT “Advanced Memory Electronic Control System” (AMECS). AMECS is manufactured and tested to meet the latest EU standard for performance, safety and testing of water softeners.
  • Page 5: Part One

    PART ONE OVERVIEW OF THE WATER SOFTENING PROCESS WHAT IS A WATER SOFTENER? Hard water Soft water A water softener works by passing hard water through a cylinder containing ion exchange resin. Resin The resin consists of tiny beads that attract Brine and retain the hardness minerals, allowing the now softened water into your...
  • Page 6: Installation And Operating Considerations

    INSTALLATION AND INSTALLATION AND OPERATING CONSIDERATIONS OPERATING CONSIDERATIONS 1. Before you begin The installation of your new water softener is relatively straightforward. However, we would recommend that either a qualified plumber or a person with relevant plumbing experience carries out the installation. Before embarking on the installation, please ensure you have familiarised yourself with both these instructions and the components required to complete the installation.
  • Page 7 If you are planning to install the water softener above ground level e.g. In the loft, the following instructions should be strictly adhered to. 3. Loft installation The water softener should be installed within a container with no less than 100 litre capacity, to which there should be connected an overflow pipe of no less than 20mm diameter.
  • Page 8: Typical Installation Layout

    TYPICAL INSTALLATION LAYOUT To rising Inlet from main mains Non-return By-pass valve valve shown closed Outlet valve Inlet valve shown open shown open Use reducing bush for 15mm pipework Inlet to Outlet from softener softener Key to the diagram A. Non return valve B.
  • Page 9: Part Two

    PART TWO PART TWO INSTALLING YOUR WATER SOFTENER INSTALLING YOUR WATER SOFTENER 1. Positioning the water softener 1. Positioning the water softener It is very important to establish the water pressure before installing the water softener. If It is very important to establish the water pressure before installing the water softener. If the water pressure is low, then the water softener may not operate effectively.
  • Page 10 Now place the water softener salt in the brine cabinet. Use care cubes (tablet salt) nly, this is available from your local BWT stockist. Note: Tablet salt or block salt can be used for the WS455 and WS555 models, depending on preference.
  • Page 11 8. Testing for the water hardness in your area Water hardness can vary from one location to another. To determine the hardness of the water feeding your water softener (un-softened supply), use the hardness test kit supplied. " Fill the test bottle supplied to the fill line with water from a hard water tap "...
  • Page 12: Programming Procedure

    PROGRAMMING PROCEDURE 00:00 Time Fig1 Fig2 Fig3 Hardness 00:00 02:00 Time RECHARGE Time 1. SETTING THE TIME OF DAY (see Fig1) The first two digits (00) of the display will flash, prompting the installer to set the time. The time is adjusted by using the keys.
  • Page 13 4. Setting the Type of Salt. (See Fig4) *For WS455 and WS555 models only To operate effectively, your water softener must be set to the type of salt that you intend to use in the system. Block salt (BS) and care cubes (CC) are suitable. Use the keys to select the type of salt used.
  • Page 14 10. Manual regeneration ( Under normal operating conditions, your water softener will regenerate automatically and you should not normally have to regenerate the unit manually. If, however, a manual regeneration is required, then follow the procedure set out below. 1. Press any key to illuminate the display. 2.
  • Page 15: Part Three Troubleshooting Guide

    PART THREE TROUBLESHOOTING GUIDE IF YOUR WATER SOFTENER IS NOT PERFORMING AS IT SHOULD, PLEASE RUN THROUGH THE CHECK LIST BELOW CHECKLIST SOLUT ION Page Section PROBLEM: WATER STILL REMAINS HARD Is there a m inimum of Fill the brine cabinet with salt. 150mm of salt in the brine cabinet? 10-11...
  • Page 16 Err 1 message to indicate a controller error and an audible alarm will sound. The error condition can only be cleared by removing and re-applying the power. IF PROBLEM PERSISTS, PLEASE CALL YOUR BWT STOCKIST OR CONTACT OUR TECHNICAL HELP DESK ON 01494 838 100.
  • Page 17: Specification Table

    SPECIFICATION TABLE Model WS355 WS455 WS555 WS655 WS755 WS255 Size 10 Litre 14 Litre 10 Litre 14 Litre 20 Litre 25 Litre Height (mm) Width (mm) Depth (mm) Unit weight Kg (empty) Unit weight Kg (in service) Maximum peak flow rate L/min* (hi-flo)
  • Page 18: Warranty

    Extended Warranties In addition to the standard warranty, BWT can offer you the option to further extend this protection with one of their unique warranty and service plans that provides the peace of mind offered by an extended warranty and the practical benefits of a service plan.
  • Page 20 Contact © BWT 2017. In the interest of product development, we reserve the right the alter specifications without prior notice. All photographs are to be used as a guide only. Terms and conditions apply. E & OE. Tel: 01494 838100...

This manual is also suitable for:

Ws seriesWs355Ws455Ws555Ws655Ws755

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