Related Manuals for Daikin Super Multi NX FCQ50C7VEB
Summarization of Contents
Service Manual
SUPER MULTI NX
Identifies the product series and model.
E-Series / F-Series / G-Series
Specifies the compatible series for the manual.
List of Functions
1. Functions
Introduces the section detailing product functions.
1.1 Cooling Only - Indoor Unit
Lists functions for cooling-only indoor units.
1.2 Cooling Only - Outdoor Unit
Lists functions for cooling-only outdoor units.
1.3 Heat Pump - Indoor Unit
Lists functions for heat pump indoor units.
1.4 Heat Pump - Outdoor Unit
Lists functions for heat pump outdoor units.
Specifications
1. Specifications
Introduces the section detailing product specifications.
1.1 Cooling Only - Indoor Unit
Lists specifications for cooling-only indoor units.
1.2 Cooling Only - Outdoor Unit
Lists specifications for cooling-only outdoor units.
1.3 Heat Pump - Indoor Unit
Lists specifications for heat pump indoor units.
1.4 Heat Pump - Outdoor Unit
Lists specifications for heat pump outdoor units.
Printed Circuit Board Connector Wiring Diagram
1. Indoor Unit
Details wiring diagrams for indoor units.
1.1 Wall Mounted Type
Wiring diagrams for wall-mounted indoor units.
1.2 Floor Standing Type
Wiring diagrams for floor standing indoor units.
1.3 Floor / Ceiling Suspended Dual Type
Wiring diagrams for floor/ceiling suspended dual type indoor units.
1.4 Duct Connected Type
Wiring diagrams for duct connected indoor units.
1.5 Ceiling Mounted Cassette Type
Wiring diagrams for ceiling mounted cassette indoor units.
1.6 Ceiling Mounted Built-in Type
Wiring diagrams for ceiling mounted built-in indoor units.
1.7 Ceiling Suspended Type
Wiring diagrams for ceiling suspended indoor units.
2. Remote Controller
Details wiring diagrams for remote controllers.
2.1 Wired Remote Controller
Wiring diagrams for wired remote controllers.
2.2 Wireless Remote Controller
Wiring diagrams for wireless remote controllers.
3. Outdoor Unit
Details wiring diagrams for outdoor units.
Function and Control
1. Function of Indoor Unit (RA Models)
Explains functions of indoor units for RA models.
1.1 Temperature Control
Describes temperature control mechanisms.
1.2 Frequency Principle
Explains the principle of frequency control for the compressor.
1.3 Operation Starting Control
Details the control sequence for starting operations.
1.4 Airflow Direction Control
Explains how to control airflow direction.
1.5 Fan Speed Control for Indoor Units
Details fan speed control for indoor units.
1.6 Program Dry Operation
Describes the Program Dry Operation mode.
1.7 Automatic Operation
Explains the Automatic Operation mode.
1.8 Thermostat Control
Details the thermostat control logic.
1.9 NIGHT SET Mode
Explains the NIGHT SET Mode function.
1.10 ECONO Operation
Describes the ECONO Operation for energy saving.
1.11 HOME LEAVE Operation
Explains the HOME LEAVE Operation feature.
1.12 2-Area INTELLIGENT EYE Operation
Details the 2-Area INTELLIGENT EYE Operation.
1.13 INTELLIGENT EYE Operation
Explains the INTELLIGENT EYE Operation function.
1.14 Inverter POWERFUL Operation
Describes the Inverter POWERFUL Operation.
1.15 Other Functions
Lists and explains other available functions.
2. Function of Indoor Unit (SA Models)
Explains functions of indoor units for SA models.
2.1 Drain Pump Control
Details the control of the drain pump.
2.2 Thermostat Sensor in Remote Controller
Explains the thermostat sensor in the remote controller.
2.3 Freeze Prevention Control
Details the freeze prevention control.
2.4 Hot Start Control (In Heating Operation Only)
Explains hot start control during heating operation.
3. Function of Thermistor
Explains the function of various thermistors.
4. Control Specification
Details control specifications for the system.
4.1 Mode Hierarchy
Outlines the hierarchy of operation modes.
4.2 Frequency Control
Explains frequency control mechanisms.
4.3 Controls at Mode Changing / Start-up
Details controls during mode changes and start-up.
4.4 Discharge Pipe Temperature Control
Explains discharge pipe temperature control.
4.5 Input Current Control
Details input current control.
4.6 Freeze-up Protection Control
Explains freeze-up protection control.
4.7 Heating Peak-cut Control
Details heating peak-cut control.
4.8 Outdoor Fan Control
Explains outdoor fan control.
4.9 Liquid Compression Protection Function
Details liquid compression protection.
4.10 Defrost Control
Explains defrost control.
4.11 Low Hz High Pressure Limit
Details the low Hz high pressure limit.
4.12 Electronic Expansion Valve Control
Explains electronic expansion valve control.
4.13 Malfunctions
Lists potential malfunctions.
Operation Manual
1. System Configuration
Describes the system configuration.
2. RA Indoor Unit
Details RA indoor unit information.
2.1 FTXG, CTXG Series - ARC466A1
Covers FTXG, CTXG series with remote controller ARC466A1.
2.2 FTXS, FVXS Series - ARC452A1, A3
Covers FTXS, FVXS series with remote controller ARC452A1, A3.
2.3 ATXS, FLK(X)S, FDK(X)S Series - ARC433B67, B68, B69, B76
Covers ATXS, FLK(X)S, FDK(X)S series with specific remote controllers.
3. SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Details SA indoor units of FFQ, FCQ, FDBQ, FBQ, FHQ series.
3.1 BRC1D528
Covers remote controller BRC1D528.
3.2 BRC1E51A7
Covers remote controller BRC1E51A7.
3.3 BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66
Covers specific remote controller models.
Service Diagnosis
1. Troubleshooting with LED
Guides troubleshooting using LED indicators.
1.1 Indoor Unit
Troubleshooting for indoor unit LEDs.
1.2 Outdoor Unit
Troubleshooting for outdoor unit LEDs.
2. Problem Symptoms and Measures
Lists problem symptoms and corresponding measures.
3. Service Check Function
Explains the service check function.
3.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
Service check for RA Indoor Units.
3.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Service check for SA Indoor Units.
4. Code Indication on Remote Controller
Explains error codes indicated on the remote controller.
4.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
Error codes for RA Indoor Units.
4.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Error codes for SA Indoor Units.
4.3 Outdoor Unit
Error codes for the outdoor unit.
5. Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
Troubleshooting specific to RA Indoor Units.
5.1 Indoor Unit PCB Abnormality
Addresses indoor unit PCB abnormalities.
5.2 Freeze-up Protection Control or Heating Peak-cut Control
Troubleshooting for freeze-up and peak-cut controls.
5.3 Fan Motor or Related Abnormality
Addresses fan motor and related issues.
5.4 Thermistor or Related Abnormality (Indoor Unit)
Troubleshooting for indoor unit thermistors.
5.5 Front Panel Open / Close Fault (FTXG and CTXG Series)
Addresses front panel faults for specific series.
5.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit)
Troubleshooting signal transmission errors.
5.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit)
Addresses unspecified voltage issues.
6. Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Troubleshooting for SA Indoor Units.
6.1 Indoor Unit PCB Abnormality
Addresses indoor unit PCB abnormalities.
6.2 Drain Water Level System Abnormality
Troubleshooting drain water level system issues.
6.3 Fan Motor or Related Abnormality
Addresses fan motor and related issues.
6.4 Swing Motor Lock (FHQ Series)
Troubleshooting swing motor lock for FHQ series.
6.5 Drain System Abnormality
Troubleshooting drain system abnormalities.
6.6 Thermistor or Related Abnormality
Troubleshooting for thermistors and related issues.
6.7 Remote Controller Thermistor Abnormality
Addresses remote controller thermistor abnormalities.
6.8 Signal Transmission Error (between Indoor Unit and Remote Controller)
Troubleshooting signal transmission errors.
6.9 Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller)
Troubleshooting signal transmission errors between remote controllers.
6.10 Field Setting Abnormality
Addresses field setting abnormalities.
7. Troubleshooting for Outdoor Unit
Guides troubleshooting for outdoor units.
7.1 Anti-icing Function
Troubleshooting anti-icing function.
7.2 Outdoor Unit PCB Abnormality
Addresses outdoor unit PCB abnormalities.
7.3 OL Activation (Compressor Overload)
Troubleshooting compressor overload.
7.4 Compressor Lock
Addresses compressor lock issues.
7.5 DC Fan Lock
Troubleshooting DC fan lock.
7.6 Input Overcurrent Detection
Details input overcurrent detection.
7.7 Discharge Pipe Temperature Control
Explains discharge pipe temperature control.
7.8 High Pressure Control in Cooling
Details high pressure control in cooling.
7.9 Compressor Sensor System Abnormality
Addresses compressor sensor system abnormalities.
7.10 Position Sensor Abnormality
Troubleshooting position sensor abnormalities.
7.11 CT or Related Abnormality
Addresses CT or related abnormalities.
7.12 Thermistor or Related Abnormality (Outdoor Unit)
Troubleshooting for outdoor unit thermistors.
7.13 Electrical Box Temperature Rise
Details electrical box temperature rise.
7.14 Radiation Fin Temperature Rise
Explains radiation fin temperature rise.
7.15 Output Overcurrent Detection
Details output overcurrent detection.
7.16 Refrigerant Shortage
Troubleshooting refrigerant shortage.
7.17 Low-voltage Detection or Over-voltage Detection
Addresses low-voltage or over-voltage detection.
7.18 Signal Transmission Error (on Outdoor Unit PCB)
Troubleshooting signal transmission errors on the outdoor unit PCB.
7.19 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units)
Troubleshooting anti-icing and voltage issues between units.
8. Check
Lists various checks for system components.
8.1 Thermistor Resistance Check
Details how to check thermistor resistance.
8.2 Fan Motor Connector Check
Guides checking the fan motor connector.
8.3 Hall IC Check
Details how to check the Hall IC.
8.4 Power Supply Waveform Check
Explains how to check power supply waveform.
8.5 Electronic Expansion Valve Check
Guides checking the electronic expansion valve.
8.6 Four Way Valve Performance Check
Details four way valve performance check.
8.7 Inverter Unit Refrigerant System Check
Explains inverter unit refrigerant system check.
8.8 “Inverter Checker” Check
Details the "Inverter Checker" check.
8.9 Rotation Pulse Check on the Outdoor Unit PCB
Guides checking rotation pulse on the outdoor unit PCB.
8.10 Installation Condition Check
Details installation condition checks.
8.11 Discharge Pressure Check
Explains discharge pressure check.
8.12 Outdoor Fan System Check
Guides outdoor fan system checks.
8.13 Capacitor Voltage Check
Details capacitor voltage checks.
8.14 Power Module Check
Explains power module checks.
Removal Procedure
1. Outdoor Unit - 50~75 Class
Details removal procedures for 50-75 class outdoor units.
1.1 Removal of Outer Panels
Steps for removing outer panels.
1.2 Removal of Electrical Box
Procedure for removing the electrical box.
1.3 Removal of PCBs
Steps for removing printed circuit boards.
1.4 Removal of Outdoor Fan / Fan Motor
Procedure for removing the outdoor fan and motor.
1.5 Removal of Sound Blankets
Steps for removing sound blankets.
1.6 Removal of Coils / Thermistors
Procedure for removing coils and thermistors.
1.7 Removal of Distributor
Steps for removing the distributor.
1.8 Removal of Four Way Valve
Procedure for removing the four way valve.
1.9 Removal of Compressor
Steps for removing the compressor.
2. Outdoor Unit - 80/90 Class
Details removal procedures for 80-90 class outdoor units.
2.1 Removal of Outer Panels
Steps for removing outer panels.
2.2 Removal of Electrical Box
Procedure for removing the electrical box.
2.3 Removal of PCBs
Steps for removing printed circuit boards.
2.4 Removal of Fan Motor
Procedure for removing the fan motor.
2.5 Removal of Coils / Thermistors
Steps for removing coils and thermistors.
2.6 Removal of Sound Blankets
Steps for removing sound blankets.
2.7 Removal of Compressor
Procedure for removing the compressor.
Trial Operation and Field Settings
1. Pump Down Operation
Details the procedure for pump down operation.
2. Forced Operation
Explains the forced operation mode.
3. Wiring Error Check Function
Details the wiring error check function.
4. Trial Operation
Guides the user through the trial operation process.
4.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
Trial operation procedures for RA Indoor Units.
4.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Trial operation procedures for SA Indoor Units.
5. Field Settings
Details various field settings for the system.
5.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series
Field settings for RA Indoor Units.
5.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Field settings for SA Indoor Units.
5.3 Outdoor Unit
Details field settings for outdoor units.
6. Application of Silicon Grease to a Power Transistor and a Diode Bridge
Explains the application of silicon grease to power components.
Appendix
1. Piping Diagrams
Provides piping diagrams for the system.
1.1 Indoor Unit
Piping diagrams for indoor units.
1.1.1 Wall Mounted Type
Piping diagrams for wall-mounted indoor units.
1.1.2 Floor Standing Type
Piping diagrams for floor standing indoor units.
1.1.3 Floor / Ceiling Suspended Dual Type
Piping diagrams for floor/ceiling suspended dual type indoor units.
1.1.4 Duct Connected Type
Piping diagrams for duct connected indoor units.
1.1.5 Ceiling Mounted Cassette Type
Piping diagrams for ceiling mounted cassette indoor units.
1.1.6 Ceiling Mounted Built-in Type
Piping diagrams for ceiling mounted built-in indoor units.
1.1.7 Ceiling Suspended Type
Piping diagrams for ceiling suspended indoor units.
1.2 Outdoor Unit
Piping diagrams for outdoor units.
1.2.1 Cooling Only
Piping diagrams for cooling-only outdoor units.
1.2.2 Heat Pump
Piping diagrams for heat pump outdoor units.
2. Wiring Diagrams
Provides wiring diagrams for the system.
2.1 Indoor Unit
Wiring diagrams for indoor units.
2.1.1 Wall Mounted Type
Wiring diagrams for wall-mounted indoor units.
2.1.2 Floor Standing Type
Wiring diagrams for floor standing indoor units.
2.1.3 Floor / Ceiling Suspended Dual Type
Wiring diagrams for floor/ceiling suspended dual type indoor units.
2.1.4 Duct Connected Type
Wiring diagrams for duct connected indoor units.
2.1.5 Ceiling Mounted Cassette Type
Wiring diagrams for ceiling mounted cassette indoor units.
2.1.6 Ceiling Mounted Built-in Type
Wiring diagrams for ceiling mounted built-in indoor units.
2.1.7 Ceiling Suspended Type
Wiring diagrams for ceiling suspended indoor units.
2.2 Outdoor Unit
Wiring diagrams for outdoor units.
2.2.1 Cooling Only
Wiring diagrams for cooling-only outdoor units.
2.2.2 Heat Pump
Wiring diagrams for heat pump outdoor units.
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