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Daikin FTXN50L User Manual

Daikin FTXN50L
88 pages
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SERVICE MANUAL
Inverter Wall Mounted Single Split
dd
SM-5WM-Y-EU-A3
MODELS
FTXN25/35/50/60L RXN25/35/50/60L
FTXN25/35/50/60M RXN25/35/50/60M
FTXK25/35/50/60A RXK25/35/50/60A
FTXN25/35/50/60N RXN25/35/50/60N
FTXC25/35/50/60A RXC25/35/50/60A
FTXB50/60A RXB50/60A
FTXB50/60B RXB50/60B
FTXB50/60C RXB50/60C
ATXN25/35/50/60L ARXN25/35/50/60L
ATXN25/35/50/60M ARXN25/35/50/60M
ATXN25/35/50/60N ARXN25/35/50/60N
ATXB50/60C ARXB50/60C
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Daikin FTXN50L Specifications

General IconGeneral
BrandDaikin
ModelFTXN50L
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Cautions and Warnings

Caution and Warnings

General warnings and cautions for repair work, categorized into Warning and Caution.

Caution in Repair

Specific safety precautions to be observed before and during repair work.

Post-Repair Safety Cautions

Warning

Critical warnings for product installation and post-repair handling to prevent serious injury.

Caution

General cautions for product installation and post-repair handling to prevent accidents.

Inspection after Repair

Essential checks to perform after completing repair work for safety and functionality.

PCB Wiring Diagrams

Unit Functionality and Control

2.2 Cooling and Heating Mode Operation

Overview of operating modes: Cool, Heat, Fan, Auto, and Dry.

Service Diagnosis and Error Handling

3.1 Indoor Error Indication

How indoor unit LEDs indicate operational status and errors.

3.2 Error Code Retrieval

How to retrieve error codes using remote controllers.

3.2.1 Remote Controller Models

Steps to retrieve error codes with BRC52A61 and BRC52B63 remote controllers.

Last State Error Retrieval

Methods to retrieve the last state error from remote controllers.

3.2.2 Wired Controller BRC51A61

Error display and retrieval using the wired controller.

3.3 Outdoor Error Indication

How outdoor unit 7-segment display indicates operational status and errors.

3.4 Error Code Descriptions

Table detailing error codes and their descriptions for various models.

Detailed Error Troubleshooting

A1: Indoor PCB Abnormality

Troubleshooting steps for indoor PCB abnormalities.

A5: Antifreeze/High Pressure Control

Troubleshooting for freeze protection and high pressure control errors.

E1: Outdoor PCB Abnormality

Troubleshooting steps for outdoor PCB abnormalities.

E5: Compressor Overload

Troubleshooting steps for compressor overload conditions.

E6: Compressor Lock/Start-up Abnormality

Troubleshooting steps for compressor lock or start-up abnormalities.

E7: Outdoor Fan Motor Lock

Troubleshooting steps for outdoor fan motor lock issues.

E8: AC Input Over Current

Troubleshooting steps for AC input over current conditions.

EA: 4 Way Valve Abnormality

Troubleshooting steps for 4-way valve abnormalities.

F3: Discharge Pipe Overheat

Troubleshooting steps for discharge pipe overheat conditions.

F6: Heat Exchanger Overheat

Troubleshooting steps for heat exchanger overheat conditions.

H0: Compressor Sensor System Abnormal

Troubleshooting steps for compressor sensor system abnormalities.

H6: Position Sensor Abnormal (Compressor)

Troubleshooting steps for compressor position sensor abnormalities.

H8: AC Current Sensor Abnormality

Troubleshooting steps for AC current sensor abnormalities.

H9, J3, J6, P4: Thermistor Related Abnormalities

Troubleshooting for various thermistor abnormalities.

L3: Electrical Box Temperature Rise

Troubleshooting steps for electrical box temperature rise.

L4: Heat Sink Overheat

Troubleshooting steps for heat sink overheat conditions.

L5: IPM Abnormality

Troubleshooting steps for IPM abnormalities.

U0: Insufficient Gas

Troubleshooting steps for insufficient gas conditions.

U2: DC Voltage Out of Range

Troubleshooting steps for DC voltage out of range errors.

U4: Communication Abnormality

Troubleshooting steps for communication abnormalities.

UA: Installation Abnormality

Troubleshooting steps for installation abnormalities.

Wiring Diagrams

Refrigerant Flow Diagrams

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