Daikin RX50G3V1B - User Manual

Service
Manual
[Applied Models]
z Inverter Pair : Heat Pump
Inverter Pair
Wall Mounted Type FTX-G Series
SiBE041029EC

Summary

DAIKIN Service Manual

Inverter Pair Wall Mounted Type FTX-G Series

Details the Inverter Pair Wall Mounted Type FTX-G Series.

Part 3 PCB Wiring Diagrams

1. Indoor Unit PCB Connectors

2. Outdoor Unit PCB Connectors

Part 4 Function and Control

1. Main Functions

Part 6 Service Diagnosis

1. General Problem Symptoms

Lists common problems and initial checks for diagnosis.

2. Troubleshooting with LED

Guides troubleshooting based on LED indicators on the units.

3. Service Diagnosis Methods

Procedures for diagnosing unit malfunctions using codes.

4. Troubleshooting Specific Errors

Detailed steps for various error codes and symptoms.

5. Component Checks

Procedures for checking specific components and systems.

Part 7 Trial Operation and Field Settings

1. Pump Down Operation

2. Forced Cooling Operation

3. Trial Operation

4. Field Settings

1. Safety Cautions

1.1 Warnings for Workers

Essential safety warnings for personnel performing repairs.

1.2 Warnings for Users

Important safety instructions and precautions for end-users.

1. Functions

1. Main Functions

1.1 Temperature Control

1.2 Frequency Principle

3.12 Malfunctions

3.12.1 Sensor Malfunction Detection

3.12.2 Overcurrent and Overload Detection

3.12.3 Refrigerant Shortage Detection

2. Troubleshooting with LED

2.1 Indoor Unit LED Troubleshooting

Troubleshooting using LED indicators on the indoor unit.

2.2 Outdoor Unit LED Troubleshooting

Troubleshooting using LED indicators on the outdoor unit.

3. Service Diagnosis

Method 1: Diagnosis Mode (Remote)

4. Troubleshooting

4.1 Error Codes and Description

Catalog of error codes and their corresponding descriptions.

4.2 Indoor Unit PCB Abnormality

Troubleshooting steps for indoor unit PCB malfunctions.

4.3 Freeze-up;Peak-cut Protection

Freeze-up;Peak-cut Troubleshooting

Troubleshooting for freeze-up and heating peak-cut protection.

4.4 Fan Motor (DC Motor) Abnormality

Fan Motor Troubleshooting

Troubleshooting for fan motor issues.

4.5 Indoor Unit Thermistor Abnormality

Indoor Thermistor Troubleshooting

Troubleshooting for indoor unit thermistor problems.

4.6 Refrigerant Shortage

Refrigerant Shortage Troubleshooting

Diagnosis and troubleshooting for refrigerant shortage.

4.7 Voltage Detection Errors

Voltage Detection Troubleshooting

Troubleshooting for voltage detection errors.

4.8 Signal Transmission Errors (Unit to Unit)

Signal Transmission Troubleshooting

Troubleshooting signal transmission errors between units.

4.9 Outdoor Unit PCB Signal Error

Outdoor PCB Signal Troubleshooting

Troubleshooting signal errors specific to the outdoor unit PCB.

4.10 Unspecified Voltage Errors (Unit to Unit)

Unspecified Voltage Troubleshooting

Troubleshooting unspecified voltage issues between units.

4.11 Outdoor Unit PCB Abnormality

Outdoor PCB Abnormality Troubleshooting

Troubleshooting steps for outdoor unit PCB malfunctions.

4.12 OL Activation (Compressor Overload)

Compressor Overload Troubleshooting

Troubleshooting compressor overload (OL activation).

4.13 Compressor Lock

Compressor Lock Troubleshooting

Troubleshooting for compressor lock issues.

4.14 DC Fan Lock

DC Fan Lock Troubleshooting

Troubleshooting for DC fan lock errors.

4.15 Input Overcurrent Detection

Input Overcurrent Troubleshooting

Troubleshooting input overcurrent detection.

4.16 Four Way Valve Abnormality

Four Way Valve Troubleshooting

Troubleshooting issues with the four-way valve.

4.17 Discharge Pipe Temperature Control

Discharge Pipe Temp. Troubleshooting

Troubleshooting discharge pipe temperature control.

4.18 High Pressure Control in Cooling

High Pressure Cooling Troubleshooting

Troubleshooting high-pressure control during cooling.

4.19 Compressor System Sensor Abnormality

4.19.1 Compressor Sensor Abnormalities (Specific Models)

4.19.2 Compressor Sensor Abnormalities (Other Models)

4.20 Position Sensor Abnormality

Position Sensor Troubleshooting

Troubleshooting position sensor abnormalities.

4.21 CT or Related Abnormality (Specific Models)

CT Abnormality Troubleshooting

Troubleshooting CT or related abnormalities for specific models.

4.22 Outdoor Unit Thermistor Abnormality

Outdoor Thermistor Troubleshooting

Troubleshooting outdoor unit thermistor problems.

4.23 Electrical Box Temperature Rise

Electrical Box Temp. Rise Troubleshooting

Troubleshooting electrical box temperature rise.

4.24 Radiation Fin Temperature Rise

Radiation Fin Temp. Rise Troubleshooting

Troubleshooting radiation fin temperature rise.

4.25 Output Overcurrent Detection

Output Overcurrent Troubleshooting

5. Checks

5.1 Thermistor Resistance Check

5.2 Indoor Fan Motor Connector Check

5.3 Power Supply Waveforms Check

5.4 Electronic Expansion Valve Check

5.5 Four Way Valve Performance Check

5.6 Inverter Unit Refrigerant System Check

5.7 Inverter Analyzer Check

5.8 Rotation Pulse Check on Outdoor PCB

5.9 Installation Condition Check

5.10 Discharge Pressure Check

5.11 Outdoor Fan System Check

5.12 Main Circuit Short Check

5.13 Capacitor Voltage Check

5.14 Power Module Check

Daikin RX50G3V1B Specifications

General

Brand	Daikin
Model	RX50G3V1B
Category	Air Conditioner
Language	English