Daikin ARX35K2V1B User Manual

Service
Manual
[Applicable Models]
 Inverter Pair: Heat Pump
Inverter Pair
Wall Mounted Type FTX/ATX-K Series
SiBE041525F

Daikin ARX35K2V1B Specifications

General

Brand	Daikin
Model	ARX35K2V1B
Category	Air Conditioner
Language	English

Summary

Part 4 - Functions and Control

1. Main Functions

Explains core operational features like temperature and fan speed control.

1.1 Temperature Control

Defines temperature parameters and system control.

1.2 Frequency Principle

Explains inverter frequency control of compressor speed.

1.7 Thermostat Control

1.10 Inverter POWERFUL Operation

2. Thermistor Functions

3. Control Specification

3.1 Mode Hierarchy

3.2 Frequency Control

Details how compressor frequency is determined and adjusted.

3.3 Controls at Mode Changing / Start-up

3.4 Discharge Pipe Temperature Control

3.5 Input Current Control

3.6 Freeze-up Protection Control

3.7 Heating Peak-cut Control

3.9 Liquid Compression Protection Function

3.10 Defrost Control

3.11 Electronic Expansion Valve Control

Describes control logic for the electronic expansion valve.

3.12 Malfunctions

Covers sensor malfunction and overcurrent/overload detection.

Part 6 - Service Diagnosis

1. General Problem Symptoms and Check Items

Lists common symptoms and initial checks for troubleshooting.

2. Troubleshooting with LED

Explains how to interpret LED indicators for troubleshooting.

3. Service Diagnosis

Outlines diagnostic methods using the remote controller.

4. Troubleshooting

Provides detailed troubleshooting steps for various error codes.

4.1 Error Codes and Descriptions

Lists and explains all error codes and their reference pages.

4.2 Indoor Unit PCB Abnormality

Troubleshooting steps for indoor unit PCB issues.

4.3 Freeze-up Protection Control / Heating Peak-cut Control

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

4.4 Fan Motor (DC Motor) or Related Abnormality

Troubleshooting steps for fan motor issues.

4.5 Thermistor or Related Abnormality (Indoor Unit)

Troubleshooting for indoor unit thermistor errors.

4.6 Low-voltage Detection or Over-voltage Detection

Troubleshooting for voltage detection errors.

4.7 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)

Troubleshooting for communication errors between units.

4.8 Unspecified Voltage (Between Indoor Unit and Outdoor Unit)

Troubleshooting for unspecified voltage between units.

4.9 Outdoor Unit PCB Abnormality

Troubleshooting steps for outdoor unit PCB issues.

4.10 OL Activation (Compressor Overload)

Troubleshooting for compressor overload errors.

4.11 Compressor Lock

Troubleshooting steps for compressor lock issues.

4.12 DC Fan Lock

Troubleshooting for DC fan lock errors.

4.13 Input Overcurrent Detection

Troubleshooting for input overcurrent detection.

4.14 Four Way Valve Abnormality

Troubleshooting for four-way valve issues.

4.15 Discharge Pipe Temperature Control

Troubleshooting for discharge pipe temperature control errors.

4.16 High Pressure Control in Cooling

4.17 Compressor System Sensor Abnormality

4.18 Position Sensor Abnormality

4.19 Thermistor or Related Abnormality (Outdoor Unit)

4.20 Electrical Box Temperature Rise

4.21 Radiation Fin Temperature Rise

4.22 Output Overcurrent Detection

5. Check

5.1 Thermistor Resistance Check

5.2 Indoor Fan Motor Connector Output 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 the Outdoor Unit 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 Power Module Check

Part 7 - Trial Operation and Field Settings

1. Tips for Servicing

1.1 Pump Down Operation

1.2 Forced Cooling Operation

2. Trial Operation