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York YKHC 18 User Manual

York YKHC 18
53 pages
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Cassette
YKHC 18 to 48
SERVICE MANUAL
YKHC 18 · YKHC 24 · YKHC 30 · YKHC 36 · YKHC 48
SM-YKHC-18-48GB 03-07

Table of Contents

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York YKHC 18 Specifications

General IconGeneral
BrandYork
ModelYKHC 18
CategoryAir Conditioner
LanguageEnglish

Summary

Model Identification

Decoding Model Number

Explains the meaning of each character in the model number for identification.

Product Features

Low Operation Noise

Details the design aspects contributing to quiet operation and a comfortable environment.

Fresh Air Intake

Highlights the system's capability to provide fresh air for health and comfort.

Efficient Cooling Performance

Describes the system's ability to deliver equal, fast, and wide-range cooling.

Advanced 3D Screw Fan

Explains the benefits of the 3D screw fan for improved airflow and heat exchange.

Easy Installation and Maintenance

Focuses on the unit's compact design, enabling easy installation in shallow ceilings.

Technical Specifications

Cooling and Heating Performance

Details cooling/heating capacity, input, rated current, and EER/COP.

Compressor, Fan, and Coil Specs

Provides specifications for compressor, indoor/outdoor fans, and coils.

Noise Level Analysis

Sound Pressure Level Charts

Presents octave band sound pressure level data for different capacity ranges.

Operational Characteristics

Velocity and Temperature Distribution

Illustrates airflow velocity and temperature distribution patterns from the unit.

Operating Temperature Range

Defines the operational limits for heating and cooling based on ambient and indoor temperatures.

Capacity Tables

Cooling Capacity Data

Provides detailed cooling capacity (kW) and input (kW) under various indoor/outdoor conditions.

Heating Capacity Data

Lists heating capacity (kW) and input (kW) across different temperature conditions.

Electric Control System

Performance Index and Ratings

Outlines applicable voltage range, frequency, and working environment temperature.

Main Component Descriptions

Introduces key components like indoor/outdoor fans, buzzer, indicators, and valves.

Operation Modes

Manual Operation

Explains manual action and manual cooling modes, including activation and indicators.

Heating and Defrost Operations

Covers conditions, actions, and ending criteria for defrosting cycles.

Cooling, Dehumidifying, and Auto Modes

Explains cooling, dehumidifying, and automatic mode selection logic.

Fan Only Mode

Details the function and fan control when only the fan is active.

Additional Functions

LED Indicator Functions

Explains the meaning and behavior of various LED indicators on the unit.

Louver and Condensate Pump Control

Describes louver movement and the control procedures for the condensate pump.

Troubleshooting and Diagnostics

Protective Function Overviews

Details various protective functions like compressor delay and overload protection.

Self-Diagnosis Indicators

Explains LED flashing patterns for indoor and outdoor unit error indications.

Wiring Diagrams

YKHC-12-18 Wiring Schematics

Provides wiring diagrams for the indoor and outdoor units of the YKHC-12-18 model.

YKHC-24 Wiring Schematics

Illustrates the wiring connections for the YKHC-24 indoor and outdoor units.

YKHC-30/36 Wiring Schematics

Shows the wiring diagrams for the YKHC-30 and YKHC-36 indoor and outdoor units.

YKHC-48 Wiring Schematics

Details the wiring configurations for the YKHC-48 indoor and outdoor units.

Dimensions and Outlines

Indoor Unit Dimensions

Presents dimensional drawings for YKHC-12-18 and YKHC-24 indoor units.

Outdoor Unit Dimensions

Shows dimensional drawings for various outdoor unit models.

Installation Procedures

Installation Site Requirements

Specifies criteria for selecting an appropriate installation location for the unit.

Indoor Unit Installation Steps

Provides detailed steps for installing indoor unit bodies and panels for all models.

Flange and Duct Installation

Explains methods for installing fresh air intake flanges and ducts.

Outdoor Unit Installation and Piping

Covers outdoor unit placement, refrigerant piping, and test operation.

Servicing and Maintenance

Troubleshooting Common Issues

Lists common abnormal conditions and their initial troubleshooting steps.

Remote Controller Troubleshooting

Addresses issues related to remote controller functionality and signal transmission.

Cleaning Procedures

Provides instructions for cleaning the indoor unit and air filter.

Exploded Views and Parts Lists

Indoor Unit Exploded View

Displays an exploded diagram and parts list for YKHC-12-18 indoor unit.

Outdoor Unit Exploded Views

Shows exploded diagrams and parts lists for various outdoor unit models.

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