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Daikin RXB18AXVJU User Manual

Daikin RXB18AXVJU
84 pages
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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
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Daikin RXB18AXVJU Specifications

General IconGeneral
HSPF Rating10
Cooling Capacity18000 BTU/h
Heating Capacity18000 BTU/h
Voltage208-230V
Power Supply208-230V, 60Hz

Summary

1.0 Inverter Single Split

1.2 PCB Connector Wiring Diagram

Illustrates indoor and outdoor PCB connector layouts and functions.

2.0 Function & Control

3.0 Service Diagnosis

3.1 Error Indication from Indoor

Explains LED indicators on the indoor unit for operation and faults.

3.2 Error Code Retrieved by Remote Controller

Guides on how to retrieve error codes using the remote controller.

3.3 Error Code Description for Inverter

Provides descriptions and troubleshooting for various error codes.

A1 Indoor PCB Abnormality

Details possible causes and troubleshooting for indoor PCB faults.

A5 Antifreeze Protection or High Pressure Control

Troubleshooting for freezing or high pressure protection errors.

A6 Indoor Fan Motor Abnormality

Details possible causes and troubleshooting for indoor fan motor issues.

C4 Indoor Heat Exchanger Thermistor Abnormality

Troubleshooting for faults related to the indoor heat exchanger thermistor.

C9 Indoor Room Thermistor Abnormality

Troubleshooting for issues with the indoor room thermistor.

E1 Outdoor PCB Abnormality

Details possible causes and troubleshooting for outdoor PCB faults.

E5 Compressor Overload

Troubleshooting steps for compressor overload conditions.

E6 Compressor Lock/Start-up Abnormality

Troubleshooting for compressor locking or start-up failures.

E7 Outdoor Fan Motor Lock

Details troubleshooting for outdoor fan motor lock issues.

E8 AC Input Over Current

Troubleshooting for AC input over current errors.

EA 4 Way Valve Abnormality

Troubleshooting steps for four-way valve malfunction.

F3 Discharge Pipe Overheat

Troubleshooting for discharge pipe overheating issues.

U0 Insufficient Gas

Troubleshooting steps for insufficient refrigerant gas.

Safety Cautions

Caution and Warnings

General safety precautions and warnings for repair work.

Caution in Repair

Specific safety warnings related to performing repairs.

Cautions Regarding Products After Repair

Warning

Critical warnings related to product installation and post-repair.

Inspection After Repair

Safety Checks and Precautions

Safety precautions and checks required after repair work.

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