Daikin Super Multi NX FTXS42G2V1B - User Manual

Service
Manual
SiBE121021_C
E-Series / F-Series / G-Series
[Applied Models]
● Inverter Multi : Cooling Only
● Inverter Multi : Heat Pump

Daikin Super Multi NX FTXS42G2V1B Specifications

General

Cooling Capacity	4.2 kW
Heating Capacity	5.0 kW
Type	Split System
Seasonal Energy Efficiency Ratio (SEER)	6.10
Power Supply	220-240V, 50Hz
Refrigerant	R-410A

Summary

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

1.12 2-Area INTELLIGENT EYE Operation

Explains the 2-area INTELLIGENT EYE operation for energy saving and directed airflow.

1.13 INTELLIGENT EYE Operation

Describes the INTELLIGENT EYE function for detecting human presence and reducing capacity.

1.14 Inverter POWERFUL Operation

Explains the POWERFUL operation for maximizing cooling/heating capacity.

4.13 Malfunctions

Details malfunction detection for sensors, overcurrent, overload, and refrigerant shortage.

Part 5 Operation Manual

Part 6 Service Diagnosis

1. Troubleshooting with LED

Provides troubleshooting steps based on indoor and outdoor unit LED indicators.

1.1 Indoor Unit

Details troubleshooting for indoor unit operation lamp blinking errors.

1.2 Outdoor Unit

Details troubleshooting for outdoor unit LED indications.

2. Problem Symptoms and Measures

Lists common problem symptoms and their corresponding measures.

3. Service Check Function

Explains how to use the service check function via the remote controller.

3.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

Details service check procedures for RA indoor units.

3.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

Details service check procedures for SA indoor units.

4. Code Indication on Remote Controller

Lists error codes displayed on remote controllers for RA and SA indoor units.

4.3 Outdoor Unit

5. Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

Provides detailed troubleshooting steps for various RA indoor unit abnormalities.

5.1 Indoor Unit PCB Abnormality

Details troubleshooting for indoor unit PCB abnormalities.

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

Addresses troubleshooting for freeze-up and heating peak-cut control issues.

5.3 Fan Motor or Related Abnormality

Covers troubleshooting for fan motor and related abnormalities.

5.4 Thermistor or Related Abnormality (Indoor Unit)

Details troubleshooting for indoor unit thermistor or related abnormalities.

5.5 Front Panel Open; Close Fault (FTXG and CTXG Series)

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

Addresses signal transmission errors between indoor and outdoor units.

5.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit)

6. Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

Provides detailed troubleshooting steps for various SA indoor unit abnormalities.

6.1 Indoor Unit PCB Abnormality

Details troubleshooting for indoor unit PCB abnormalities.

6.2 Drain Water Level System Abnormality

Covers troubleshooting for drain water level system abnormalities.

6.3 Fan Motor or Related Abnormality

Details troubleshooting for fan motor and related abnormalities.

6.4 Swing Motor Lock (FHQ Series)

6.5 Drain System Abnormality

Covers troubleshooting for drain system abnormalities.

6.6 Thermistor or Related Abnormality

Details troubleshooting for thermistor or related abnormalities.

6.7 Remote Controller Thermistor Abnormality

6.8 Signal Transmission Error (between Indoor Unit and Remote Controller)

Explains troubleshooting for signal transmission errors between indoor unit and remote.

6.9 Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller)

Details troubleshooting for signal transmission errors between multiple remote controllers.

6.10 Field Setting Abnormality

7. Troubleshooting for Outdoor Unit

Provides troubleshooting steps for outdoor unit issues.

7.1 Anti-icing Function

7.2 Outdoor Unit PCB Abnormality

Covers troubleshooting for outdoor unit PCB abnormalities.

7.3 OL Activation (Compressor Overload)

Details troubleshooting for compressor overload (OL activation).

7.4 Compressor Lock

Explains troubleshooting for compressor lock issues.

7.5 DC Fan Lock

Covers troubleshooting for DC fan lock issues.

7.6 Input Overcurrent Detection

Details troubleshooting for input overcurrent detection.

7.7 Discharge Pipe Temperature Control

Explains troubleshooting related to discharge pipe temperature control.

7.8 High Pressure Control in Cooling

Details troubleshooting for high pressure control in cooling mode.

7.9 Compressor Sensor System Abnormality

Covers troubleshooting for compressor sensor system abnormalities.

7.10 Position Sensor Abnormality

7.11 CT or Related Abnormality

7.12 Thermistor or Related Abnormality (Outdoor Unit)

Covers troubleshooting for outdoor unit thermistor or related abnormalities.

7.13 Electrical Box Temperature Rise

7.14 Radiation Fin Temperature Rise

7.15 Output Overcurrent Detection

Covers troubleshooting for output overcurrent detection.

7.16 Refrigerant Shortage

Explains troubleshooting for refrigerant shortage issues.

7.17 Low-voltage Detection or Over-voltage Detection

Details troubleshooting for low/over-voltage detection.

7.18 Signal Transmission Error (on Outdoor Unit PCB)

Covers troubleshooting for signal transmission errors on the outdoor unit PCB.

7.19 Anti-icing Function in Other Rooms; Unspecified Voltage (between Indoor and Outdoor Units)

8. Check

8.1 Thermistor Resistance Check

Details how to check thermistor resistance values against a table and graph.

8.2 Fan Motor Connector Check

8.3 Hall IC Check

8.4 Power Supply Waveform Check

8.5 Electronic Expansion Valve Check

Details the procedure for checking the electronic expansion valve.

8.6 Four Way Valve Performance Check

Explains how to check the performance of the four-way valve.

8.7 Inverter Unit Refrigerant System Check

8.8 “Inverter Checker” Check

Details the procedure for using the inverter checker.

8.9 Rotation Pulse Check on the Outdoor Unit PCB

Explains how to check rotation pulse on the outdoor unit PCB.

8.10 Installation Condition Check

8.11 Discharge Pressure Check

8.12 Outdoor Fan System Check

8.13 Capacitor Voltage Check

8.14 Power Module Check

Part 7 Removal Procedure

1. Outdoor Unit - 50~75 Class

1.1 Removal of Outer Panels

Details the steps for removing outer panels of the outdoor unit.

1.2 Removal of Electrical Box

Covers the procedure for removing the electrical box.

1.3 Removal of PCBs

Details the steps for removing PCBs from the outdoor unit.

1.4 Removal of Outdoor Fan; Fan Motor

Explains how to remove the outdoor fan and fan motor.

1.5 Removal of Sound Blankets

1.6 Removal of Coils; Thermistors

1.7 Removal of Distributor

1.8 Removal of Four Way Valve

1.9 Removal of Compressor

2. Outdoor Unit - 80;90 Class

2.1 Removal of Outer Panels

Details the steps for removing outer panels of the outdoor unit.

2.2 Removal of Electrical Box

Covers the procedure for removing the electrical box.

2.3 Removal of PCBs

Details the steps for removing PCBs from the outdoor unit.

2.4 Removal of Fan Motor

Explains how to remove the fan motor.

2.5 Removal of Coils; Thermistors

2.6 Removal of Sound Blankets

2.7 Removal of Compressor

Part 8 Trial Operation and Field Settings

1. Pump Down Operation

2. Forced Operation

3. Wiring Error Check Function

4. Trial Operation

4.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

4.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

5.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series

5.1.1 Model Type Setting

Explains how to set the model type (heat pump/cooling only) using DIP switches.

5.1.2 When 2 Units are Installed in 1 Room

5.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series

5.2.1 How to Change the Field Settings

5.2.4 Address and MAIN; SUB Setting for Wireless Remote Controller

Details address and MAIN/SUB settings for wireless remote controllers.

5.3.1 Priority Room Setting

Explains how to set the priority room for controlling capacity.

5.3.2 COOL; HEAT Mode Lock

Details setting the unit to cooling or heating only mode.

5.3.3 NIGHT QUIET Mode

5.3.4 ECONO-mode-proof Setting

6. Application of Silicon Grease to a Power Transistor and a Diode Bridge