INSTALLATIONMANUALR410A Split SeriesModelsARX20J!V1BARX25J!V1BARX35J!V1BEnglishDeutschFrançaisNederlandsEspañolItaliano!""#$%&ÜPortuguesInstallation manualR410A Split seriesInstallationsanleitungSplit-Baureihe R410AManuel d’installationSérie split R410AMontagehandleidingR410A Split-systeemManual de instalaciónSerie Split R410AManuale d’installazioneSerie Multiambienti R410A!"#$%&ß'%( $")*+Ü,+*,-ò'%*%&(ýì$.-ò ,$%&Üò R410AManual de InstalaçãoSérie split R410A

installation manual

Daikin ARX20J3V1B Installation Manual

safety cautions

Part 1 List of Functions

Functions

Part 2 Specifications

Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Indoor Unit

Outdoor Unit

Main Functions

Airflow Direction Control

Fan Speed Control for Indoor Unit

Program Dry Operation

Automatic Operation

Thermostat Control

NIGHT SET Mode

Inverter POWERFUL Operation

Other Functions

Function of Thermistor

Control Specification

Controls at Mode Changing / Start-up

Discharge Pipe Temperature Control

Input Current Control

Freeze-up Protection Control

Outdoor Fan Control

Defrost Control

Electronic Expansion Valve Control

pressure equalizing control

Malfunctions

Part 5 Remote Controller

Remote Controller

mode button

Part 6 Service Diagnosis

Troubleshooting with LED

Problem Symptoms and Measures

Service Check Function

Troubleshooting

Indoor Unit PCB Abnormality

Freeze-up Protection Control or Heating Peak-cut Control

Fan Motor (DC Motor) or Related Abnormality

Thermistor or Related Abnormality (Indoor Unit)

Refrigerant Shortage

Low-voltage Detection or Over-voltage Detection

Signal Transmission Error (between Indoor Unit and Outdoor Unit)

Unspecified Voltage (between Indoor Unit and Outdoor Unit)

Outdoor Unit PCB Abnormality

OL Activation (Compressor Overload)

Compressor Lock

DC Fan Lock

Input Overcurrent Detection

Four Way Valve Abnormality

High Pressure Control in Cooling

Compressor System Sensor Abnormality

Position Sensor Abnormality

DC Voltage / Current Sensor Abnormality

Thermistor or Related Abnormality (Outdoor Unit)

Electrical Box Temperature Rise

Radiation Fin Temperature Rise

Output Overcurrent Detection

Check

Fan Motor Connector Output Check

Power Supply Waveforms Check

Four Way Valve Performance Check

Inverter Analyzer Check

Rotation Pulse Check on the Outdoor Unit PCB

Installation Condition Check

Outdoor Fan System Check

Power Module Check

Tips for Servicing

Trial Operation

Field Settings

Silicon Grease on Power Transistor / Diode Bridge

Part 8 Appendix

Piping Diagrams

Wiring Diagrams

Removal Procedure (Booklet No.)

revision history

ARX20J3V1B

ARX25J3V1B

ARX35J3V1B