Daikin 2MXS40G2V1B User Manual

Service
Manual
Inverter Multi for 2 Rooms
G-Series
SiBE12-816_D
[Applied Models]
● Inverter Multi : Cooling Only
● Inverter Multi : Heat Pump

Daikin 2MXS40G2V1B Specifications

General

Brand	Daikin
Model	2MXS40G2V1B
Category	Air Conditioner
Language	English

Summary

Part 1 List of Functions

1. Functions

Details the functions of the air conditioning system.

1.1 Cooling Only

Details functions specific to cooling-only operation.

1.2 Heat Pump

Details functions specific to heat pump operation.

Part 2 Specifications

1. Specifications

Provides technical specifications for various components.

1.1 Cooling Only - Indoor Unit

Specifications for cooling-only indoor units.

1.2 Cooling Only - Outdoor Unit

Specifications for cooling-only outdoor units.

1.3 Heat Pump - Indoor Unit

Specifications for heat pump indoor units.

1.4 Heat Pump - Outdoor Unit

Specifications for heat pump outdoor units.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Indoor Unit

Wiring diagrams for indoor unit components.

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.

2. Remote Controller

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

Wiring diagrams for outdoor units.

3.1 2MK(X)S40/50GV1B, 2MK(X)S40/50G2V1B

Wiring diagrams for specific outdoor unit models.

Part 4 Function and Control

1. Function of Indoor Unit (RA Models)

Details functions of RA model indoor units.

1.1 Temperature Control

Explains temperature control mechanisms and settings.

1.2 Frequency Principle

Details the inverter frequency control principle for compressors.

1.8 Thermostat Control

Describes thermostat control based on temperature differences.

2. Function of Indoor Unit (SA Models)

Details functions of SA model indoor units.

2.3 Freeze Prevention Control

Explains the freeze prevention control logic.

4. Control Specification

Details control specifications and logic.

4.2 Frequency Control

Details how frequency is determined and controlled.

4.6 Freeze-up Protection Control

Explains the freeze-up protection control logic.

4.10 Defrost Control

Describes the defrost control process.

4.11 Electronic Expansion Valve Control

Details the control functions of the electronic expansion valve.

4.12 Malfunctions

Lists and explains various system malfunctions.

Part 5 Operation Manual

1. System Configuration

Guidance on system configuration after installation.

2. RA Indoor Unit

Details on RA indoor units.

2.1 FTXG-J, CTXG-J Series - ARC466A1

Overview of RA Indoor Unit FTXG-J, CTXG-J Series with ARC466A1.

2.3 FTXG-E, CTXG-E, FLK(X)S, FDK(X)S Series - ARC433B41, B67, B68, B69, B76

Overview of RA Indoor Unit FTXG-E, CTXG-E, FLK(X)S, FDK(X)S Series.

3. SA Indoor Unit - FFQ Series

Details on SA Indoor Unit - FFQ Series.

3.1 BRC1D528

Information on BRC1D528 remote controller for SA Indoor Unit.

3.2 BRC7E530W/531W

Information on BRC7E530W/531W remote controller for SA Indoor Unit.

Part 6 Service Diagnosis

1. Troubleshooting with LED

Troubleshooting indoor and outdoor unit errors via LED indicators.

3. Service Check Function

Procedures for service check functions.

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

Service check functions for RA Indoor Unit series.

3.2 SA Indoor Unit - FFQ Series

Service check functions for SA Indoor Unit - FFQ Series.

4. Code Indication on Remote Controller

Explains error codes displayed on the remote controller.

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

Error codes for RA Indoor Unit series on remote controller.

4.2 SA Indoor Unit - FFQ Series

Error codes for SA Indoor Unit - FFQ Series on remote controller.

4.3 Outdoor Unit

Error codes for outdoor units on remote controller.

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

Troubleshooting procedures for RA Indoor Unit series.

5.1 Indoor Unit PCB Abnormality

Troubleshooting indoor unit PCB abnormalities.

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

Troubleshooting freeze-up protection and heating peak-cut controls.

5.3 Fan Motor or Related Abnormality

Troubleshooting fan motor related abnormalities.

5.4 Thermistor or Related Abnormality (Indoor Unit)

Troubleshooting thermistor abnormalities in indoor units.

5.5 Front Panel Open / Close Fault (FTXG, CTXG)

Troubleshooting front panel open/close faults.

6. Troubleshooting for SA Indoor Unit - FFQ Series

Troubleshooting procedures for SA Indoor Unit - FFQ Series.

6.1 Indoor Unit PCB Abnormality

Troubleshooting indoor unit PCB abnormalities for FFQ Series.

6.2 Drain Water Level System Abnormality

Troubleshooting drain water level system abnormalities.

6.3 Fan Motor or Related Abnormality

Troubleshooting fan motor related abnormalities for FFQ Series.

6.4 Drain System Abnormality

Troubleshooting drain system abnormalities for FFQ Series.

6.5 Thermistor or Related Abnormality

Troubleshooting thermistor abnormalities for FFQ Series.

6.6 Remote Controller Thermistor Abnormality

Troubleshooting remote controller thermistor abnormalities.

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

Troubleshooting signal transmission errors between units.

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

Troubleshooting signal transmission errors between remote controllers.

6.9 Field Setting Abnormality

Troubleshooting field setting abnormalities.

7. Troubleshooting for Outdoor Unit

Troubleshooting procedures for outdoor units.

7.1 Anti-icing Control for Indoor Unit

Troubleshooting anti-icing control for indoor units.

7.2 OL Activation (Compressor Overload)

Troubleshooting compressor overload (OL activation).

7.3 Compressor Lock

Troubleshooting compressor lock.

7.4 DC Fan Lock

Troubleshooting DC fan lock.

7.5 Input Overcurrent Detection

Troubleshooting input overcurrent detection.

7.6 Discharge Pipe Temperature Control

Troubleshooting discharge pipe temperature control.

7.7 High Pressure Control in Cooling

Troubleshooting high pressure control in cooling.

7.8 Compressor Sensor System Abnormality

Troubleshooting compressor sensor system abnormalities.

7.9 Position Sensor Abnormality

Troubleshooting position sensor abnormalities.

7.10 DC Voltage / Current Sensor Abnormality

Troubleshooting DC voltage/current sensor abnormalities.

7.11 Thermistor or Related Abnormality (Outdoor Unit)

Troubleshooting outdoor unit thermistor abnormalities.

7.12 Electrical Box Temperature Rise

Troubleshooting electrical box temperature rise.

7.13 Radiation Fin Temperature Rise

Troubleshooting radiation fin temperature rise.

7.14 Output Overcurrent Detection

Troubleshooting output overcurrent detection.

7.15 Refrigerant Shortage

Troubleshooting refrigerant shortage.

7.16 Low-voltage Detection or Over-voltage Detection

Troubleshooting low/over-voltage detection.

7.17 Outdoor Unit PCB Abnormality or Signal Transmission Error

Troubleshooting outdoor unit PCB/signal transmission errors.

7.18 Unspecified Voltage (between Indoor Unit and Outdoor Unit) / Anti-icing control in Other Room

Troubleshooting unspecified voltage and anti-icing in other rooms.

8. Check

Procedures for component checks.

8.1 Thermistor Resistance Check

Procedure for checking thermistor resistance.

8.2 Fan Motor Connector Output Check

Procedure for checking fan motor connector output.

8.3 Hall IC Check

Procedure for checking the Hall IC.

8.4 Power Supply Waveforms Check

Procedure for checking power supply waveforms.

8.5 Electronic Expansion Valve Check

Procedure for checking the electronic expansion valve.

8.6 Four Way Valve Performance Check

Procedure for checking the four-way valve performance.

8.7 Inverter Unit Refrigerant System Check

Procedure for checking the inverter unit refrigerant system.

8.8 “Inverter Checker” Check

Procedure for using the inverter checker.

8.9 Rotating Pulse Input on the Outdoor Unit PCB Check

Procedure for checking rotating pulse input on outdoor unit PCB.

8.10 Installation Condition Check

Procedure for checking installation conditions.

8.11 Discharge Pressure Check

Procedure for checking discharge pressure.

8.12 Outdoor Unit Fan System Check

Procedure for checking the outdoor unit fan system.

8.13 Main Circuit Short Check

Procedure for checking the main circuit for shorts.

8.14 Power Module Check

Procedure for checking the power module.

Part 7 Removal Procedure

1. Outdoor Unit

Procedures for disassembling the outdoor unit.

1.1 Removal of Outer Panels

Procedure for removing outer panels of the outdoor unit.

1.2 Removal of Electrical Box

Procedure for removing the electrical box.

1.3 Removal of PCB

Procedure for removing the printed circuit board (PCB).

1.4 Removal of Sound Blankets

Procedure for removing sound blankets.

1.5 Removal of Outdoor Fan / Fan Motor

Procedure for removing the outdoor fan and fan motor.

1.6 Removal of Thermistors

Procedure for removing thermistors.

1.7 Removal of Four Way Valve / Electronic Expansion Valves

Procedure for removing the four-way valve and expansion valves.

1.8 Removal of Compressor

Procedure for removing the compressor.

Part 8 Trial Operation and Field Settings

1. Pump Down Operation

Procedure for pump down operation.

2. Forced Cooling Operation

Procedure for forced cooling operation.

3. Trial Operation

Procedure for trial operation.

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

Trial operation for RA Indoor Unit series.

3.2 SA Indoor Unit - FFQ Series

Trial operation for SA Indoor Unit - FFQ Series.

4. Field Settings

Procedures for adjusting field settings.

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

Field settings for RA Indoor Unit series.

4.2 SA Indoor Unit - FFQ Series

Field settings for SA Indoor Unit - FFQ Series.

4.3 Outdoor Unit

Field settings for outdoor units.

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

Procedure for applying silicon grease to heat sink components.

Part 9 Appendix

1. Piping Diagrams

Diagrams illustrating refrigerant piping.

1.1 Indoor Unit

Piping diagrams for indoor units.

1.2 Outdoor Unit

Piping diagrams for outdoor units.

2. Wiring Diagrams

Diagrams illustrating electrical wiring.

2.1 Indoor Unit

Wiring diagrams for indoor units.

2.2 Outdoor Unit

Wiring diagrams for outdoor units.