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Hokkaido HKEI-HCNI 353 G User Manual

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Cover
HKEI-HCNI 263 G
HKEI-HCNI 353 G
HKEI-HCNI 503 G
HOKKAIDO
SERVICE MANUAL
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Hokkaido HKEI-HCNI 353 G Specifications

General IconGeneral
BrandHokkaido
ModelHKEI-HCNI 353 G
CategoryAir Conditioner
LanguageEnglish

Summary

1. Precaution

1.1 Safety Precaution

Essential safety measures to prevent injury and property damage during operation and service.

1.2 Warning

Critical warnings regarding installation, electrical safety, handling, and environmental factors.

2. Function

Indoor Unit Operational Functions

Details various functions of the indoor unit, including remote control, sensing, fan speed, and modes.

Outdoor Unit Functional Features

Highlights key operational features of the outdoor unit, such as power control and noise reduction.

3. Dimensions

3.1 Indoor Unit Dimensions

Provides detailed dimensions for the indoor unit of the air conditioner.

3.2 Outdoor Unit Dimensions

Provides detailed dimensions for the outdoor unit of the air conditioner.

4. Refrigerant Cycle Diagram

Cooling Only Cycle

Illustrates the refrigerant flow diagram for cooling-only operation.

Heat Pump Cycle

Shows the refrigerant flow diagram for heat pump mode, including reversing valve.

5. Operation Limits

5.1 Cooling Operation Limits

Defines the operational temperature ranges for effective cooling performance.

5.2 Heating Operation Limits

Defines the operational temperature ranges for effective heating performance.

6. Wiring Diagram

7. Installation Details

7.1 Wrench Torque Specifications

Lists recommended torque values for installation fittings and connections.

7.2 Cable Connection Guidelines

Specifies requirements for connecting power and control cables.

7.3 Pipe Length and Elevation

Details maximum allowable pipe lengths and elevation differences for installation.

7.4 Air Purging Procedure

Describes the process of removing air from the refrigerant piping system.

7.5 Pumping Down for Re-installation

Explains the procedure for recovering refrigerant during unit removal or re-installation.

7.6 Re-air Purging Procedure

Details the steps for purging air after re-installation or system modification.

7.7 Balancing Refrigerant

Describes how to balance refrigerant levels using 2-way and 3-way valves.

7.8 Evacuation Process

Outlines the procedure for creating a vacuum in the refrigerant system.

7.9 Gas Charging

Provides instructions for charging the refrigerant into the system.

8. Electronic Function

8.1 Symbols and Meanings

Defines the meaning of various symbols and abbreviations used for electronic functions.

8.2 System Functions

Lists and describes the various operational functions of the air conditioner.

8.3 Protection Mechanisms

Details the safety and protection features implemented in the electronic control system.

8.4 Fan-Only Mode

Explains the operation of the unit when only the fan is active.

8.5 Cooling Mode

Describes the operational characteristics and actions during cooling mode.

8.6 Dehumidifying Mode

Outlines the functions and fan actions specific to dehumidifying operation.

8.7 Heating Mode

Details the operations, fan actions, and protections during heating mode.

8.8 Defrosting Mode

Explains the conditions, timing, and actions for defrosting operations.

8.9 Auto Mode

Describes how the unit automatically selects operation mode based on temperature.

8.10 Forced Cooling

Explains the function to manually activate cooling operation.

8.11 Sleep Mode

Details the sleep mode function for enhanced comfort and energy saving.

8.12 Auto Restart Function

Describes the unit's ability to resume operation after a power failure.

8.13 Turbo Mode

Explains the turbo mode for rapid temperature adjustment with high fan speed.

9. Model and Parameters

10. Troubleshooting

10.1 Display Board Indicators

Explains the meaning and behavior of the operation and timer indicators.

10.2 Troubleshooting Guide

Lists failure phenomena and their corresponding indicator status for cooling and heat pump modes.

11. Characteristic of Temperature Sensor

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