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CHOFU AEYC-1639U-CH User Manual

CHOFU AEYC-1639U-CH
156 pages
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MADE IN JAPAN
AIR TO WATER HEAT PUMP
HEATING AND COOLING
MONOBLOC TYPE
DC INVERTER
INSTALLATION AND INSTRUCTION MANUAL
KEEP THIS MANUAL FOR FUTURE REFERENCE
GB
AEYC-0639U-CH
AEYC-1039U-CH
AEYC-1639U-CH

Table of Contents

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CHOFU AEYC-1639U-CH Specifications

General IconGeneral
BrandCHOFU
ModelAEYC-1639U-CH
CategoryHeat Pump
LanguageEnglish

Summary

Responsibility and recommendations

General Information and Responsibility

General guidance, safety advice, and manufacturer's warranty disclaimers.

WEEE Information

Guidelines for proper disposal of the product at its end of life as per EU directive.

Specifications

Installation

3.1 Notice for safety installation

Critical safety warnings and precautions to be followed during installation.

3.2 Positioning and securing

Guidance on selecting an appropriate location and securely mounting the unit.

3.3 Main components

Overview of the primary internal and external components of the heat pump.

3.5 Water circuit connection

Detailed instructions for connecting the various water pipes and components.

3.6 Electrical connections

Comprehensive instructions for safe and compliant electrical wiring and connections.

3.7 Remote controller

Instructions for installing the remote control unit and connecting it to the main unit.

Remote Controller

4.1 Buttons

Explanation of the function of each button on the remote control unit.

4.2 Display panel

Description of icons and indicators shown on the remote controller's display.

Operation and functions of the Remote controller

5.1 System ON/OFF

How to turn the heat pump system on and off using the remote controller.

5.2 Setting the day and time

Procedure for setting the current date and time on the remote controller.

5.3 Selecting the operating mode

How to choose between Heating, Cooling, or OFF modes via the remote controller.

5.4 Domestic Hot Water production

Instructions for controlling and setting the DHW production modes and timing.

5.5 Setting the time bands for Heating/Cooling

How to program schedules for heating and cooling operations based on time bands.

5.6 Setting the time bands for DHW, Low tariff and Night mode

How to set schedules for DHW, low tariff, and night modes.

5.7 Procedure for accessing the Parameter setting menu

Guide to accessing and modifying system parameters via the remote controller.

Electrical connections

6.1 PCB (Terminal)

Diagram showing the terminal layout on the main control board.

6.2 PCB(Terminal) Input/Output

Details on the input and output terminals of the PCB and their functions.

6.3 Parameters Input/Output

Table listing parameters for configuring input/output signals and functions.

Unit Management

7.1 Operating modes

How to select and manage the unit's operating modes (Heating/Cooling).

7.2 Water temperature set point

Methods for setting and adjusting water temperature targets for heating and cooling.

7.2.2 Climatic curve

Explanation of how outdoor temperature affects water set points via climatic curves.

7.3 Water pump management

Configuration options for the main water pump's operation.

7.4 Frost protection

Functions and settings for protecting the unit and system from freezing.

7.5 Input/Output contact

Configuration of external contacts for controlling unit functions.

7.5.10 Night mode

How to activate and configure the night mode for reduced noise and power consumption.

7.5.11 Low tariff

Functionality for optimizing operation during periods of lower electricity rates.

7.5.12 Dehumidifier management

Control of a dehumidifier based on humidity sensor readings.

7.5.13 Space Heating management

System controller's strategy for managing heating based on zone demands.

Domestic Hot Water Production

8.1 DHW 3way valve management

Control and function of the 3-way valve for DHW and heating circuits.

8.2 DHW production mode

How to activate and manage DHW production modes (Comfort, Economy, Force).

8.2.1 Heat pump only

Operation mode where only the heat pump produces DHW.

8.2.2 DHW Electric heater only

Operation mode where DHW is heated solely by the electric heater.

8.2.3 Heat pump + DHW heater

Operation mode utilizing both the heat pump and DHW heater for heating.

8.2.4 Legionella prevention function

Function to periodically heat DHW to prevent legionella bacteria growth.

8.3 Backup heater

Configuration and types of backup heater functions.

8.4 EHS (External heat source)

Integration and control of an external heat source for heating.

Parameters List

9.1 Access limitation

Explanation of different user access levels for parameter settings.

9.2 Parameter table

A comprehensive list of all system parameters with their codes and descriptions.

Read value of conditions and settings (Read only)

Parameters that can only be read and not modified by the user.

Remote controller

Parameters specifically related to the remote controller's settings and functions.

Time bands settings of Heating/Cooling (Zone1)

Configuration of time schedules for heating/cooling in Zone 1.

Time bands settings of DHW

Configuration of time schedules for domestic hot water production.

HP unit

Parameters specific to the operation of the heat pump unit itself.

Frost protection

Parameters related to the frost protection functions of the system.

Input/Output

Parameters for configuring the unit's input and output signals.

Installation check and Test operation

10.1 Installation check

Checklist for verifying all installation steps and conditions before system operation.

10.2 Test operation

Procedures for testing the system's functionality after installation.

Service and Maintenance

11.1 Error code display

How error codes are displayed on the remote controller and PCB.

11.2 Error history display

Procedure for viewing past error codes stored on the PCB.

11.3 Method of reset error code display

Different methods for resetting error codes (Auto, Power OFF, Manual).

11.4 List of Error codes

A comprehensive table of error codes, their causes, troubleshooting, and reset methods.

11.5 Check and troubleshooting

Diagnostic procedures and troubleshooting steps for common issues.

Wiring Diagram

Detailed wiring diagrams for the main unit components and connections.

11.6 Monitor display function

How to access and view real-time operating data on the remote controller and PCB.

11.7 Maintenance

General maintenance recommendations and precautions for the unit.

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