Pioneer YH1824GHFD18R2 User Manual

CENTRAL SPLIT AIR CONDITIONER
IMPORTANT NOTICE: Thank you very much for purchasing this Air Conditioner. Please read this manual carefully before
installing or operating your new air conditioning system. Be sure to save this manual for future reference.
HIGH EFFICENCY
CONDENSING UNIT
Models:
• YH1824GHFD18R2
• YH3036GHFD18R2
• YH4248GHFD18R2
• YH4860GHFD18R2
- R-410A REFRIGERANT
- 208~230 V, 1 Phase, 60 Hz
- 18 SEER
Technical &
Service Manual

Pioneer YH1824GHFD18R2 Specifications

General

Brand	Pioneer
Model	YH1824GHFD18R2
Category	Heat Pump
Language	English

Summary

SAFETY SUMMARY

IMPORTANT NOTICE

General safety notices, hazard definitions, and precautions for installation and operation.

GENERAL INFORMATION

Features

Details on DC inverter technology, pressure sensor, dimensions, installation, and temperature control.

Product Lineup

Overview of available outdoor unit models and their corresponding capacities.

Nomenclature

Lists the specific model numbers for the condensing units.

Unit Installation

Information on 1:1 system compatibility and installation requirements.

Working Range

Specifies operating voltage, temperature limits, and storage conditions.

Product Appearance

Visual representations of the outdoor units for different models.

SPECIFICATIONS

Cooling and Heating Specifications

Detailed performance data including capacity, input, current, SEER, HSPF, and COP.

Electrical and Mechanical Specifications

Power supply, wiring, fan motor, coil, and compressor specifications.

OUTLINES AND DIMENSIONS

24K Unit Dimensions

Visual representation and measurements for the 24K outdoor unit.

36K Unit Dimensions

Visual representation and measurements for the 36K outdoor unit.

48K/60K Unit Dimensions

Visual representation and measurements for the 48K/60K outdoor units.

ELECTRICAL DATA

Indoor Unit Electrical Specifications

Voltage, frequency, applicable voltage, and ELB ratings for indoor units.

CAPACITIES AND SELECTION DATA

Capacity Characteristic Charts

Charts showing outdoor unit capacity based on operating ambient temperature.

Performance Data (Cooling Operation)

Detailed cooling performance data for various model combinations.

Piping Length Correction Factors

Factors to adjust capacity based on refrigerant pipe length and height differences.

Defrosting Operation Correction Factors

Factors to adjust heating capacity considering defrost cycles.

SOUND PRESSURE DATA

Outdoor Unit Sound Levels

Graphs showing sound pressure levels across octave bands for different models.

REFRIGERANT CYCLE

24K/36K Refrigerant Cycle Diagram

Schematic illustrating the refrigerant flow and components for 24K/36K models.

48K/60K Refrigerant Cycle Diagram

Schematic illustrating the refrigerant flow and components for 48K/60K models.

WIRING DIAGRAM

Electrical Wiring Diagrams

Schematics for 24K/36K and 48K/60K units, including DIP switch settings.

Control Board Pictures

Visual identification and descriptions of main control, display, drive, and filter boards.

Common Wiring Recommendations

Recommended wire sizes for power source, transmitting cables, and fuses.

FIELD SETTING

DIP Switch Settings

Instructions and options for configuring outdoor unit functions via DIP switches.

Running Parameter Query

Procedure to check operational parameters using the 7-segment display.

PIPING WORK AND REFRIGERANT CHARGE

Maximum Pipe Length Allowed

Guidelines for refrigerant pipe length limits and additional charge calculations.

Air Tight Test & Refrigerant Charge

Procedures for performing an air-tight test and calculating additional refrigerant.

INSTALLATION TOOLS AND INSTALLATION FLOW CHART

Necessary Tools and Instruments

List of required tools and instruments for installation, with notes on applicability.

Installation Flow Chart

Step-by-step visual guide for the entire installation process.

CONTROL MODE

Control Functions

Explanation of various protection mechanisms and operating modes.

SENSOR PARAMETER

Compressor Discharge Temperature Sensor Data

Table of temperature-based resistance values and deviation rates.

TROUBLESHOOTING

Trouble Guide

Common issues, possible causes, and recommended solutions for system operation.

Fault Codes and Displays

Explanation of LED and 7-segment display fault codes for various error conditions.

Overload Protection Modes

Specific causes and corrective actions for cooling and heating overload conditions.

CHECKING COMPONENTS

Refrigerant System Check

Flowcharts and procedures for testing the refrigerant system in cooling and heating modes.

Parts Unit Check

Guidance on examining outdoor unit fan motors and compressors.

DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR

Outdoor Unit Disassembly Procedures

Step-by-step instructions for disassembling and assembling the outdoor unit.

CONTROL LOGIC DESCRIPTION

Outdoor Unit Signal Communication

Illustration of communication signals between indoor and outdoor units.

Cooling Mode Logic

Detailed explanation of the control logic for cooling operation start, stop, and actions.

Heating Mode Logic

Detailed explanation of the control logic for heating operation start, stop, and actions.

Protection Logic

Explanation of evaporator low-temperature and condenser high-temperature protection mechanisms.