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Service Manual
EN
Ver.
01 06 10 2022
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RAY
SERIES
SIH + SOH-09BIR2
SIH + SOH-12BIR2

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Table of Contents
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Summarization of Contents

Specifications
Specification Sheet
Detailed technical specifications for indoor and outdoor units.
Capacity Variation Ratio According to Temperature
How cooling/heating capacity changes with outdoor temperature.
Cooling and Heating Data Sheet in Rated Frequency
Performance data at rated frequency for cooling and heating.
Outline Dimension Diagram
Indoor Unit
Dimensions and diagrams for the indoor air conditioning unit.
Outdoor Unit
Dimensions and diagrams for the outdoor air conditioning unit.
Electrical Part
Wiring Diagram
Electrical wiring schematics for indoor and outdoor units.
PCB Printed Diagram
Printed circuit board layouts for indoor and outdoor units.
Function and Control
Remote Controller Introduction
Explanation of remote controller buttons, icons, and operation.
Ewpe Smart App Operation Manual
Guide for operating the air conditioner via the Ewpe Smart mobile application.
Notes for Installation and Maintenance
Safety Precautions
Important safety guidelines for installation and maintenance, including electrical and refrigerant safety.
Installation
Installation Parts-checking
List of parts required for installation and checks.
Selection of Installation Location
Guidelines for choosing the optimal location for units.
Electric Connection Requirement
Requirements and precautions for electrical connections.
Installation of Indoor Unit
Step-by-step guide for installing the indoor unit.
Installation of Outdoor unit
Step-by-step guide for installing the outdoor unit.
Check after Installation and Test operation
Procedures for final checks and operational testing.
Maintenance
Error Code List
List of error codes, their display, status, and possible causes.
Procedure of Troubleshooting
Step-by-step troubleshooting guides for specific malfunctions.
Removal Procedure
Removal Procedure of Indoor Unit
Detailed steps for disassembling the indoor unit.
Removal Procedure of Outdoor Unit
Detailed steps for disassembling the outdoor unit.
Appendix
Reference Sheet of Celsius and Fahrenheit
Conversion table for temperature units.
Configuration of Connection Pipe
Guidelines for connecting pipes and refrigerant charging.
Pipe Expanding Method
Proper technique for expanding pipe ends to prevent leaks.
List of Resistance for Temperature Sensor
Resistance values for temperature sensors at different temperatures.

Table of Contents