Daikin RKB24AXVJU - User Manual

SERVICE MANUAL
Inverter Wall Mounted Single Split
dd
SM-5WM-Y-NA-B1
MODELS
Cooling Only
FTKB09AXVJU RKB09AXVJU
FTKB12AXVJU RKB12AXVJU
FTKB18AXVJU RKB18AXVJU
FTKB24AXVJU RKB24AXVJU
FTKN09AXVJU RKN09AXVJU
FTKN12AXVJU RKN12AXVJU
FTKN18AXVJU RKN18AXVJU
FTKN24AXVJU RKN24AXVJU
Heatpump
FTXB09AXVJU RXB09AXVJU
FTXB12AXVJU RXB12AXVJU
FTXB18AXVJU RXB18AXVJU
FTXB24AXVJU RXB24AXVJU
FTXN09AXVJU RXN09AXVJU
FTXN12AXVJU RXN12AXVJU
FTXN18AXVJU RXN18AXVJU
FTXN24AXVJU RXN24AXVJU

Summary

Safety Cautions

Caution and Warnings

Caution in Repair

Warnings and precautions during repair work.

Installation and Inspection Precautions

Installation Site Cautions

Inspection After Repair

Checks to perform after repair work is completed.

PCB Wiring Diagrams

Piping Length and Elevation Specifications

Unit Outline and Dimensions

Engineering Data (Cooling Only)

Engineering Data (Heatpump)

Function and Control Overview

Temperature Control

Cooling and Heating Mode Operation

Thermistor Functions and Locations

System Control Mechanisms

Four Way Valve Control

Outdoor Fan Control

Compressor Rotation Control

Starting Rotation Control

Compressor Rotation and Defrost Cycle

Limit Rotation Control

Defrost Cycle Operation

Protection Mechanisms

Indoor Coil Freeze Prevention

High Pressure Protection

Temperature and Current Controls

Discharge Pipe Temperature Control

Overall Current Control

Overall Compressor Frequency Control

Frequency Control Details

Initial Frequency Setting

PI Control Logic

Indoor Unit Error Indication

Error Code Retrieval

Remote Controller Operation

Inverter Error Code Descriptions

Troubleshooting Specific Error Codes

Indoor PCB Abnormality (A1)

Troubleshooting for indoor PCB abnormalities.

Antifreeze;High Pressure Protection (A5)

Troubleshooting for antifreeze and high pressure errors.

Indoor Fan Motor Abnormality (A6)

Troubleshooting for indoor fan motor errors.

Indoor Heat Exchanger Thermistor Abnormality (C4)

Troubleshooting for indoor thermistor errors.

Indoor Room Thermistor Abnormality (C9)

Troubleshooting for indoor room thermistor errors.

Outdoor PCB Abnormality (E1)

Troubleshooting for outdoor PCB abnormalities.

Compressor Overload (E5)

Troubleshooting for compressor overload errors.

Compressor Overload Troubleshooting (E5)

Further troubleshooting steps for compressor overload.

Compressor Lock;Start-up Abnormality (E6)

Troubleshooting for compressor lock or start-up issues.

Outdoor Fan Motor Lock (E7)

Troubleshooting for outdoor fan motor lock errors.

AC Input Over Current (E8)

Troubleshooting for AC input over current errors.

4 Way Valve Abnormality (EA)

Troubleshooting for 4-way valve abnormalities.

Discharge Pipe Overheat (F3)

Troubleshooting for discharge pipe overheat issues.

Heat Exchanger Overheat (F6)

Troubleshooting for heat exchanger overheat errors.

Compressor Sensor System Abnormality (H0)

Troubleshooting for compressor sensor system errors.

Compressor Sensor System Abnormality (H0 - Class 09;12)

Troubleshooting for compressor sensor system errors (09/12).

Position Sensor Abnormality (H6 - Class 09;12)

Troubleshooting for position sensor errors (09/12).

Position Sensor Abnormality (H6 - Class 18;24)

Troubleshooting for position sensor errors (18/24).

AC Current Sensor Abnormality (H8)

Troubleshooting for AC current sensor errors.

Thermistor Related Abnormalities (H9, J3, J6, P4)

Troubleshooting for various thermistor errors.

Electrical Box Temperature Rise (L3)

Troubleshooting for electrical box temp rise errors.

Heat Sink Overheat (L4)

Troubleshooting for heat sink overheat errors.

IPM Abnormality (L5)

Troubleshooting for IPM abnormalities.

Insufficient Gas (U0)

Troubleshooting for insufficient gas errors.

DC Voltage Out of Range (U2)

Communication Abnormality (U4)

Installation Abnormality (UA)

Wiring Connection Diagrams

Trial Operation and Field Settings

Pump Down Operation

Forced Cooling Operation

Trial Operation

Daikin RKB24AXVJU Specifications

General

Brand	Daikin
Model	RKB24AXVJU
Category	Air Conditioner
Language	English