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S&A CWFL-4000 - User Manual

S&A CWFL-4000
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CWFL-4000
DUAL TEMPERATURE AND
DUAL PUMP INDUSTRIAL CHILLER
USER MANUAL

Table of Contents

Questions and Answers

  • E
    Elizabeth ScottAug 4, 2025
    Why S&A Chiller shows ultra-high temperature alarm (E05 or E07)?
    • O
      ocollinsAug 4, 2025
      An ultra-high temperature alarm on your S&A Chiller (E05 or E07) can occur due to several reasons: * A blocked dust gauze, resulting in bad thermolysis. Regularly unpick and wash the dust gauze. * Poor ventilation for the air outlet and inlet. Ensure smooth ventilation. * Extremely low or unstable voltage. Improve the power supply circuit or use a voltage regulator. * Improper parameter settings on the thermostat. Reset controlling parameters or restore factory settings. * Frequent power switching. Ensure sufficient time for refrigeration (more than 5 minutes). * Excessive heat load. Reduce the heat load or use a model with larger cooling capacity.
  • P
    pthomasAug 9, 2025
    What to do if S&A Chiller shows flow alarm (E01 or E02) but there is water flowing?
    • J
      Joan HartAug 10, 2025
      If your S&A Chiller displays a flow alarm (E01 or E02) while running with other equipment, but water is flowing, the water circulation pipes might be blocked or have a bending deformation. You should check the water circulation pipe.
  • N
    Nicole ClayAug 14, 2025
    What to do if S&A Chiller shows flow alarm (E01 or E02) when using a water pipe?
    • T
      Tracy BrownAug 14, 2025
      If your S&A Chiller displays a flow alarm (E01 or E02) even when using a water pipe, it might be due to a low water level in the storage water tank. Check the water level gauge display and add water until the level is shown in the green area. Also, check whether the water circulation pipe leaks.
  • V
    Victoria ThompsonAug 19, 2025
    What to do if S&A Chiller shows alarm for ultra-high room temperature (E03)?
    • S
      Sheila LeeAug 20, 2025
      If your S&A Chiller displays an alarm for ultra-high room temperature (E03), it could be due to: The working ambient temperature is too high for the chiller, so you should improve the ventilation to guarantee that the machine is running under 40?. Alternatively, increase water temperature or preserve heat for the pipeline.
  • A
    Amy BrooksAug 25, 2025
    How to fix S&A Chiller that is turned on but unelectrified?
    • J
      Jacob MortonAug 26, 2025
      If your S&A Chiller is turned on but not electrified, it could be due to the following reasons: * The power cord is not plugged in properly. Check and ensure the power interface and the power plug are plugged in place and in good contact. * The fuse is burnt-out. Open the electric box cover, check the protective tube, replace it with a spare one if necessary, and check whether the power supply voltage is stable. Also, ensure the power interface and plug are making good contact.
  • K
    Karen RileyAug 30, 2025
    Why water drains slowly from S&A Chiller during water changing?
    • R
      Robert MirandaAug 30, 2025
      If water drains slowly from the outfall of your S&A Chiller during water changing, the injection port might not be open. Open the injection port.

Summary

Cautions

General Safety & Operational Guidelines

Covers power, voltage, frequency, water level, ventilation, filter cleaning, and condensate management.

Contour and Parts Introduction

Component Identification

Identifies key components like controller, pumps, outlets, inlets, and gauges.

Installation

Installation Procedures

Covers unpacking, filling water, connecting pipes, powering on, and initial checks.

Unit Introduction and Parameters Adjustment

Unit Features & Control Panel

Overview of unit capabilities, LCD screen, and operation buttons.

Parameter Adjustment Methods

Covers quick adjustment, user menu access, and navigation.

Advanced Menu Functions

Includes viewing failure history, restoring settings, clock, and language.

Forced Refrigeration Control

How to activate and deactivate the forced refrigeration function.

Detailed Parameter Settings

Temperature & Control Parameters

Parameters for set temperature, hysteresis, and control modes.

Alarm & Delay Settings

Parameters for temperature, sensor, and flow alarms, and their delays.

Protection, Input, Conductivity & Lock Settings

Parameters for compressor protection, inputs, conductivity, and key lock.

Failure Warning Processing Mode

Alarm Notification & Silence

How alarms are displayed and how to silence audible alerts.

Failure Code Table

Communication, System & Overload Alarms (E00-E14)

Details communication, flow, temperature, phase, and overload alarms.

Sensor & Conductivity Alarms (E15-E21)

Covers sensor failures, conductivity limits, and exhaust temperature alarms.

Conductivity Meter (Optional)

Conductivity Monitoring & Alarms

Covers monitoring range, optional alarm output, and indication.

Alarm and Communication Output

Wiring Diagram

Schematic showing alarm and MODBUS RS-485 wiring connections.

Alarm Signal States

Table detailing alarm signal states based on unit conditions.

MODBUS RS-485 Communication Function

Communication Protocol

System uses MODBUS-RTU slave mode with specific baud rate and data bits.

Command Format 03 (Read Registers)

Details host send and slave response formats for reading registers.

Command Format 06 (Write Register)

Details host send and slave response formats for writing single registers.

Error Handling & Codes

Describes error codes and exception codes for both command formats.

Read-Only Parameters (Sensors, Current)

Table of read-only parameters with register addresses, ranges, and units.

Read-Only Parameters (State - Relay Output)

Details bit definitions for relay output status registers.

Read-Only Parameters (State - Digital Input)

Details bit definitions for digital input switch status registers.

Read-Only Parameters (Alarm Status - High 16-bit)

Bit definitions for high 16-bit alarm status registers.

Read-Only Parameters (Alarm Status - Low 16-bit)

Bit definitions for low 16-bit alarm status registers.

Read;Write Registers (External Input Off)

Information on read/write registers when external input function is off.

Specifications

Model CWFL-4000 ET Specifications

Technical specifications for the CWFL-4000ET model.

Model CWFL-4000 FT Specifications

Technical specifications for the CWFL-4000FT model.

General Specifications

Covers voltage, frequency, current, capacity, refrigerant, precision, protection, and dimensions.

Simple Troubleshooting

Power & Flow Issues

Troubleshooting for no power and flow alarms or issues.

Temperature & Condensate Issues

Troubleshooting high temperature alarms and condensate water problems.

Drainage & Ventilation Issues

Troubleshooting slow drainage and poor ventilation.

S&A CWFL-4000 Specifications

General IconGeneral
Cooling Capacity4000W
RefrigerantR-410a
Voltage380V
Frequency50/60Hz
Water Flow Rate70 L/min
Flow Rate70 L/min
Temperature Control Range5°C - 35°C

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