Daikin RXB50C Service Manual

SERVICE MANUAL
Inverter Wall Mounted Single Split
dd
SM-5WM-Y-EU-A3
MODELS
FTXN25/35/50/60L RXN25/35/50/60L
FTXN25/35/50/60M RXN25/35/50/60M
FTXK25/35/50/60A RXK25/35/50/60A
FTXN25/35/50/60N RXN25/35/50/60N
FTXC25/35/50/60A RXC25/35/50/60A
FTXB50/60A RXB50/60A
FTXB50/60B RXB50/60B
FTXB50/60C RXB50/60C
ATXN25/35/50/60L ARXN25/35/50/60L
ATXN25/35/50/60M ARXN25/35/50/60M
ATXN25/35/50/60N ARXN25/35/50/60N
ATXB50/60C ARXB50/60C

Daikin RXB50C Specifications

General

Brand	Daikin
Model	RXB50C
Category	Air Conditioner
Language	English

Summary

Safety Cautions and Warnings

Caution and Warnings Overview

Repair Safety Precautions

General safety guidelines during repair work.

Post-Repair Safety Precautions

Safety guidelines to follow after repair completion.

Inspection Safety Guidelines

Safety measures for inspection after repair.

PCB Wiring Diagrams

Indoor Unit PCB Wiring

Outdoor Unit PCB Wiring

Function and Control Operations

Temperature Control

Cooling and Heating Mode Operation

Valve and Fan Control

System Protection Features

Defrost, freeze, pressure, temperature protections.

Additional System Protections

Oil recovery and overall current protections.

Service Diagnosis and Error Codes

Indoor Unit Error Indications

LED indicators for indoor errors.

Remote Controller Error Retrieval

Methods to retrieve error codes via remote controller.

Outdoor Unit Error Indication

7-segment display error codes from outdoor unit.

Inverter Error Code Descriptions

Detailed descriptions of system error codes.

Wiring Connection Diagrams

Indoor Unit Wiring Connections

Outdoor Unit Wiring Connections

Appendix A: Technical Procedures

Thermistor Resistance Checks

Procedures for checking thermistor resistance.

EXV and Valve Checks

Refrigerant and Rotation Checks

Installation and System Checks

Electrical Component Checks