Daikin FTXR18TVJUS User Manual (English)

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Questions and Answers:

Brandy SweeneyAug 3, 2025

What to do if the operation lamp is blinking on my Daikin FTXR18TVJUS?

Y
Yvonne DavenportAug 3, 2025
If the operation lamp on your Daikin Air Conditioner is blinking, you should first perform the diagnostic procedure. Also, ensure all indoor units connected to a multi-system outdoor unit are set to the same operation mode. If they aren't, set all indoor units to the same operation mode and check if the operation lamp stops blinking. You can also try setting all indoor units to cooling or heating mode to see if the operation lamp returns to normal.

Series	FTXR
Cooling Capacity	18, 000 BTU/h
EER (Cooling)	12.5
Refrigerant	R-32
Indoor Unit Weight	33 lbs
Heating Capacity	20, 000 BTU/h
Power Supply	208/230V, 1Ph, 60Hz
Indoor Noise Level	19 dB(A)

Series

FTXR

Cooling Capacity

18, 000 BTU/h

EER (Cooling)

12.5

Refrigerant

R-32

Indoor Unit Weight

33 lbs

Heating Capacity

20, 000 BTU/h

Power Supply

208/230V, 1Ph, 60Hz

Indoor Noise Level

19 dB(A)

Daikin FTXR18TVJUS User Manual

Table of Contents

Other manuals for Daikin FTXR18TVJUS

Questions and Answers:

Daikin FTXR18TVJUS Specifications

Summary

2. Functions

2.1 RA Indoor Unit

2.2 SA Indoor Unit

2.3 Outdoor Unit

1. Specifications

1.1 RA Indoor Unit

1.2 SA Indoor Unit

1.3 Outdoor Unit

1. Indoor Unit

1.1 FTXR09/12/18TVJUW(S), CTXG09/12/18QVJUW(S)

1.2 CTXS07LVJU, FTXS09/12LVJU

1.3 FTXS15/18/24LVJU

1.4 FDXS09/12LVJU, CDXS15/18/24LVJU

1.5 FVXS09/12/15/18NVJU

1.6 FDMQ09/12/15/18/24RVJU

1.7 FFQ09/12/15/18Q2VJU

6. Outdoor Unit

1. Common Functions

1.1 Temperature Control

1.2 Frequency Principle

2. RA Indoor Unit Functions

3. SA Indoor Unit Functions

3.7 Drain Pump Control

4. Control Specification

4.1 Thermistor Functions

4.3 Frequency Control

4.4 Controls at Mode Changing/Start-up

4.5 Discharge Pipe Temperature Control

4.6 Input Current Control

4.7 Freeze-up Protection Control

4.8 Heating Peak-cut Control

4.10 Liquid Compression Protection Function

4.11 Defrost Control

4.12 Low Hz High Pressure Limit

4.13 Electronic Expansion Valve Control

4.14 Malfunctions

7. BRC1E73 Wired Remote Controller

1. General Problem Symptoms and Check Items

2. Troubleshooting with LED

2.1 Indoor Unit

2.2 Outdoor Unit

3. Service Diagnosis

3.3 BRC1E73 Wired Remote Controller

3.4 BRC082A43, BRC082A41W, BRC082A42W(S) Wireless Remote Controller

4. Code Indication on Remote Controller

5. Troubleshooting for RA Indoor Unit

5.1 Indoor Unit PCB Abnormality

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

5.3 Indoor Fan Motor or Related Abnormality

5.4 Thermistor or Related Abnormality

5.5 Front Panel Open/Close Fault

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

5.7 Mismatching of Indoor Unit and Outdoor Unit

6. Troubleshooting for SA Indoor Unit

6.1 Indoor Unit PCB Abnormality

6.2 Drain Level Control System Abnormality

6.3 Indoor Fan Motor or Related Abnormality

6.4 Indoor Fan PCB Abnormality

6.5 Humidifier or Related Abnormality

6.6 Thermistor or Related Abnormality

6.7 Presence Sensor or Floor Sensor Abnormality

6.8 Remote Controller Thermistor Abnormality

6.9 Signal Transmission Error (Between Indoor and Outdoor Unit)

6.10 Signal Transmission Error (Between Indoor Unit and Remote Controller)

6.11 Signal Transmission Error (Between MAIN/SUB Remote Controllers)

6.12 Mismatching of Indoor Unit and Outdoor Unit

7. Troubleshooting for Outdoor Unit

7.1 Refrigerant Shortage

7.2 Low-voltage Detection or Over-voltage Detection

7.3 Wiring Error Check Unexecuted

7.4 Unspecified Voltage (Between Indoor Unit and Outdoor Unit), Anti-icing Control in Other Rooms

7.5 Anti-icing Control for Indoor Unit

7.6 Outdoor Unit PCB Abnormality

7.7 OL Activation (Compressor Overload)