Page 1 SiME341909EA Service Manual RXQ6-48A(N)R Series Cooling Only 50/60 Hz...
Page 2 SiME341909EA Introduction ..................1 1. Safety Cautions..................2 1.1 Warnings and Cautions Regarding Safety of Workers......2 1.2 Warnings and Cautions Regarding Safety of Users.........4 2. Icons Used ....................6 3. Revision History ..................7 Part 1 General Information ............8 1. Model Names ..................9 1.1 Indoor Unit....................9 1.2 Outdoor Unit .....................9 2.
Page 3 SiME341909EA 5.3 Group No. Setting Example..............50 6. Service Settings Menu, Maintenance Menu..........51 6.1 BRC1E63 ....................51 6.2 BRC1H81 Series ..................55 Part 4 Functions and Control ............56 1. Function Flowchart................57 2. Stop Control ..................58 2.1 Abnormal Shutdown ................58 2.2 Slave Unit Stops during Master Unit Operation........58 3.
Page 4 SiME341909EA 1.5 Operation Control Mode ...............102 2. Field Settings for Outdoor Unit............104 2.1 Function Setting ...................104 2.2 Settings by DIP Switches ..............105 2.3 Settings by BS Buttons.................108 2.4 Normal Mode..................110 2.5 Monitor Mode (Mode 1) ................111 2.6 Setting Mode (Mode 2).................115 2.7 Eco Mode Setting .................126 2.8 Night-Time Low Noise Operation and Demand Operation....127 3.
Page 5 SiME341909EA 5.22 Outdoor Unit Main PCB Abnormality............192 5.23 Current Leakage Detection ..............193 5.24 Missing of Leakage Detection Core .............194 5.25 Activation of High Pressure Switch ............195 5.26 Activation of Low Pressure Sensor ............197 5.27 Compressor Motor Lock ...............198 5.28 Outdoor Fan Motor Abnormality ............200 5.29 Electronic Expansion Valve Coil Abnormality........203 5.30 Discharge Pipe Temperature Abnormality ...........204 5.31 Wet Alarm.....................206...
Page 6 SiME341909EA 6.7 Vacuuming and Dehydration Procedure ..........268 6.8 Thermistor Check .................269 6.9 Pressure Sensor Check ...............272 6.10 Broken Wire Check of the Relay Wires ..........273 6.11 Fan Motor Connector Check (Power Supply Cable) ......275 6.12 Fan Motor Connector Check (Signal Cable) ........277 6.13 Electronic Expansion Valve Coil Check ..........278 Part 7 Appendix ................
Page 7 SiME341909EA Introduction 1. Safety Cautions..................2 1.1 Warnings and Cautions Regarding Safety of Workers......2 1.2 Warnings and Cautions Regarding Safety of Users.........4 2. Icons Used ....................6 3. Revision History ..................7 Introduction...
Page 8 Safety Cautions SiME341909EA 1. Safety Cautions Be sure to read the following safety cautions before conducting repair work. After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates normally, and explain the cautions for operating the product to the customer.
Page 9 SiME341909EA Safety Cautions Warning Do not turn the air conditioner on or off by plugging in or unplugging the power cable. Plugging in or unplugging the power cable to operate the equipment may cause an electrical shock or fire. Be sure to wear a safety helmet, gloves, and a safety belt when working in a high place (more than 2 m).
Page 10 Safety Cautions SiME341909EA Warnings and Cautions Regarding Safety of Users Warning Do not store the equipment in a room with fire sources (e.g., naked flames, gas appliances, electric heaters). Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work.
Page 11 SiME341909EA Safety Cautions Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug is dusty or has a loose connection, it may cause an electrical shock or fire.
Page 12 Icons Used SiME341909EA 2. Icons Used The following icons are used to attract the attention of the reader to specific information. Icon Type of Description Information Warning Warning is used when there is danger of personal injury. Warning Caution Caution is used when there is danger that the reader, Caution through incorrect manipulation, may damage equipment, lose data, get an unexpected result or have to restart (part...
Page 13 SiME341909EA Revision History 3. Revision History Month / Year Version Revised contents 10 / 2019 SiME341909E First edition 05 / 2020 SiME341909EA Model addition: FXAQ20/25/32/40/50/63ARVM Introduction...
Page 14: Table Of Contents
SiME341909EA Part 1 General Information 1. Model Names ..................9 1.1 Indoor Unit....................9 1.2 Outdoor Unit .....................9 2. External Appearance................10 2.1 Indoor Unit....................10 2.2 Outdoor Unit ...................11 3. Combination of Outdoor Units...............12 4. Capacity Range..................13 4.1 Connection Ratio..................13 4.2 Outdoor Unit Combinations ..............14 5.
Page 15: Model Names
SiME341909EA Model Names 1. Model Names Indoor Unit Capacity range 11.2 14.0 16.0 Power 1.25 supply, Standard Capacity index 31.25 62.5 Ceiling mounted cassette FXFSQ ― 25AR 32AR 40AR 50AR 63AR 80AR 100AR 125AR 140AR (Round flow with sensing) type Slim ceiling with 20PD...
Page 16: External Appearance
External Appearance SiME341909EA 2. External Appearance Indoor Unit Ceiling mounted cassette (Round flow with sensing) type Slim ceiling mounted duct type (Standard series) FXFSQ-AR FXDQ-PD FXDQ-ND Ceiling mounted duct type Wall mounted type FXMQ-PB FXAQ-AR FXMQ-AR Part 1 General Information...
Page 17: Outdoor Unit
SiME341909EA External Appearance Outdoor Unit 6, 8 HP 10, 12, 14, 16 HP RXQ6ARYFK RXQ10ARYFK RXQ8ARYFK RXQ12ARYFK RXQ14ARYFK RXQ16ARYFK 18, 20 HP 22, 24, 26, 28, 30, 32 HP RXQ18ANRYFK RXQ22ANRYFK RXQ28ANRYFK RXQ20ANRYFK RXQ24ANRYFK RXQ30ANRYFK RXQ26ANRYFK RXQ32ANRYFK 34, 36, 38, 40, 42, 44, 46, 48 HP RXQ34ANRYFK RXQ36ANRYFK RXQ38ANRYFK...
Page 18: Combination Of Outdoor Units
Combination of Outdoor Units SiME341909EA 3. Combination of Outdoor Units Capacity range 6 HP 8 HP 10 HP 12 HP 14 HP 16 HP 18 HP 20 HP Model name RXQ6AR RXQ8AR RXQ10AR RXQ12AR RXQ14AR RXQ16AR RXQ18ANR RXQ20ANR Outdoor unit 1 RXQ6AR RXQ8AR RXQ10AR...
Page 19: Capacity Range
SiME341909EA Capacity Range 4. Capacity Range Connection Ratio Total capacity index of the indoor units Connection ratio = Capacity index of the outdoor units Type Min. connection ratio Max. connection ratio Single outdoor unit Double outdoor units 130% Triple outdoor units Part 1 General Information...
Page 20: Outdoor Unit Combinations
Capacity Range SiME341909EA Outdoor Unit Combinations Capacity Total capacity index of Maximum number of Model name Combination index connectable indoor units connectable indoor units 16.0 RXQ6AR RXQ6AR 75 to 195 22.4 RXQ8AR RXQ8AR 100 to 260 28.0 RXQ10AR RXQ10AR 125 to 325 33.5 RXQ12AR RXQ12AR...
Page 21: Specifications
SiME341909EA Specifications 5. Specifications Model RXQ6ARYFK RXQ8ARYFK Cooling capacity at T1 1 Capacity 16.0 22.4 Capacity Btu/h 54,600 76,450 kW/kW 3.56 3.39 Btu/h∙W 12.13 11.58 Cooling capacity at T3 1 Capacity 14.7 18.8 Capacity Btu/h 50,000 64,000 kW/kW 2.87 2.88 Btu/h∙W 9.80 9.85...
Page 22 Specifications SiME341909EA Model RXQ10ARYFK RXQ12ARYFK Cooling capacity at T1 1 Capacity 28.0 33.5 Capacity Btu/h 95,550 114,350 kW/kW 3.54 3.53 Btu/h∙W 12.09 12.04 Cooling capacity at T3 1 Capacity 26.1 27.1 Capacity Btu/h 89,000 92,500 kW/kW 2.77 2.61 Btu/h∙W 9.47 8.89 10.4 Cooling capacity at T4 1...
Page 23 SiME341909EA Specifications Model RXQ14ARYFK RXQ16ARYFK Cooling capacity at T1 1 Capacity 40.0 45.0 Capacity Btu/h 136,500 153,550 kW/kW 3.54 3.42 Btu/h∙W 12.08 11.68 11.3 13.2 Cooling capacity at T3 1 Capacity 34.1 34.6 Capacity Btu/h 116,400 118,000 kW/kW 2.73 2.77 Btu/h∙W 9.31 9.44...
Page 24 SiME341909EA Part 2 Refrigerant Circuit 1. Refrigerant Circuit (Piping Diagrams) ...........19 1.1 Outdoor Unit ...................19 1.2 Indoor Unit....................23 2. Functional Parts Layout ................25 2.1 RXQ6/8AR....................25 2.2 RXQ10/12/14/16AR................26 3. Refrigerant Flow for Each Operation Mode...........27 3.1 RXQ6/8/10/12AR..................27 3.2 RXQ14/16AR..................29 Part 2 Refrigerant Circuit...
Page 25: Refrigerant Circuit Part
SiME341909EA Refrigerant Circuit (Piping Diagrams) 1. Refrigerant Circuit (Piping Diagrams) Outdoor Unit 1.1.1 RXQ6/8/10/12AR No. in Electric piping Name Function symbol diagram Compressor Compressor is operated in multi-steps according to Te. Inverter fan The fan rotation speed is varied by using inverter. Inverter fan (RXQ10/12AR only) Electronic expansion valve...
Page 26 Refrigerant Circuit (Piping Diagrams) SiME341909EA Part 2 Refrigerant Circuit...
Page 27 SiME341909EA Refrigerant Circuit (Piping Diagrams) 1.1.2 RXQ14/16AR No. in Electric piping Name Function symbol diagram Compressor Compressor is operated in multi-steps according to Te. Inverter fan The fan rotation speed is varied by using inverter. Electronic expansion valve PI control is applied to keep the outlet superheating degree of subcooling (Injection) heat exchanger constant.
Page 28 Refrigerant Circuit (Piping Diagrams) SiME341909EA Part 2 Refrigerant Circuit...
Page 29: Indoor Unit
SiME341909EA Refrigerant Circuit (Piping Diagrams) Indoor Unit No. in piping Electric Name Applicable model Function diagram symbol Electronic expansion valve All indoor units Used for gas superheating degree control while in cooling. Suction air thermistor All indoor units Used for thermostat control. Indoor liquid pipe thermistor All indoor units Used for gas superheating degree...
Page 30 Refrigerant Circuit (Piping Diagrams) SiME341909EA  FXAQ20/25/32/40/50AR  FXAQ63AR C: 4D122027A C: 4D121516A Part 2 Refrigerant Circuit...
Page 31: Functional Parts Layout
SiME341909EA Functional Parts Layout 2. Functional Parts Layout RXQ6/8AR Top View Solenoid Valve (Oil return 1) (Y3S) Electronic expansion valve (Injection) (Y2E) Thermistor (Subcooling heat exchanger gas pipe) (R6T) Thermistor (Heat Thermistor exchanger liquid pipe) (Subcooling heat (R4T) exchanger liquid pipe) (R5T) Front View Inverter fan...
Page 32: Rxq10/12/14/16Ar
Functional Parts Layout SiME341909EA RXQ10/12/14/16AR Top View Solenoid valve (Oil return 2) (Y4S) Solenoid valve (Oil return 1) (Y3S) Low pressure sensor (S1NPL) Electronic expansion valve (Injection) (Y2E) Front View Inverter fan (M1F) Thermistor (Outdoor air) (R1T) Inverter fan (M2F) High pressure switch (For M2C compressor) (S2PH)
Page 33: Refrigerant Flow For Each Operation Mode
SiME341909EA Refrigerant Flow for Each Operation Mode 3. Refrigerant Flow for Each Operation Mode RXQ6/8/10/12AR Cooling Operation High temperature, high pressure, gas High temperature, high pressure, liquid Low temperature, low pressure Indoor unit operation Fan ON Fan ON Fan OFF Heat exchanger Heat exchanger Heat exchanger...
Page 34 Refrigerant Flow for Each Operation Mode SiME341909EA Cooling Oil Return Control High temperature, high pressure, gas High temperature, high pressure, liquid Low temperature, low pressure Indoor unit operation Fan ON Fan ON Fan OFF Heat exchanger Heat exchanger Heat exchanger EV: Normal control EV: 0 pulse...
Page 35: Rxq14/16Ar
SiME341909EA Refrigerant Flow for Each Operation Mode RXQ14/16AR Cooling Operation High temperature, high pressure, gas High temperature, high pressure, liquid Low temperature, low pressure Indoor unit operation Fan OFF Heat exchanger Heat exchanger Heat exchanger EV: Normal control Filter Filter Filter Filter Filter...
Page 36 Refrigerant Flow for Each Operation Mode SiME341909EA Cooling Oil Return Control High temperature, high pressure, gas High temperature, high pressure, liquid Low temperature, low pressure Indoor unit operation Fan OFF Heat exchanger Heat exchanger Heat exchanger EV: Normal control Filter Filter Filter Filter...
Page 37 SiME341909EA Part 3 Remote Controller 1. Applicable Models .................32 2. Names and Functions ................34 2.1 BRC1E63 ....................34 2.2 BRC1H81 Series ..................36 2.3 BRC4M Series..................38 3. Main/Sub Setting...................41 3.1 Wired Remote Controller (BRC1E63) ............41 3.2 Wired Remote Controller (BRC1H81 Series) .........42 3.3 When Wireless Remote Controller is Used Together......43 4.
Page 38: Applicable Models
Applicable Models SiME341909EA 1. Applicable Models Wired remote controller Wireless remote controller Series Navigation Madoka Remote controller Receiver FXFSQ-AR BRC7M632F-6 (∗1) FXDQ-PD FXDQ-ND BRC1H81W7 BRC1E63 BRC4M151W16 BRC4M61-6 BRC1H81S7 FXMQ-PB FXMQ-AR BRC7M618-6 FXAQ-AR BRC7N618-6 Note(s) ∗1. Some functions are not available depending on the remote controller. Refer to page 33 for details.
Page 39 SiME341909EA Applicable Models Function list FXFSQ-AR Category Function BRC1E63 BRC4M151 ON/OFF operation ● ● Setting temperature ● ● Swing pattern selection ● ● Switchable fan speed (Ventilation amount) ● ● Display switching function ● — Basic performance Backlight function ● ●...
Page 40: Names And Functions
Names and Functions SiME341909EA 2. Names and Functions BRC1E63 (6) Right button (1) Mode Selector button Used to highlight the next items on the Used to select the operation mode. right-hand side. (2) Airflow Setting button Display contents are changed to next Used to indicate the Airflow Rate (Air screen per page.
Page 41 SiME341909EA Names and Functions Mode Access Operation On power-up, the message Checking the connection. Please stand by. will be displayed on the remote controller screen. Then that message will disappear and the basic screen will be displayed. To access a mode from the basic screen, refer to the figure below. When any of the operation buttons is pressed, the backlight will come on and remains lit for about 30 seconds.
Page 42: Brc1H81 Series
Names and Functions SiME341909EA BRC1H81 Series (3) (2) (4) ON/OFF  When OFF, press to turn ON the system. As a result, the status indicator (5) will turn ON too.  When ON, press to turn OFF the system. As a result, the status indicator (5) will turn OFF too.
Page 43 The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and use of such marks by Daikin Europe N.V. is under license. Other trademarks and trade names are those of their respective owners.
Page 44: Brc4M Series
Names and Functions SiME341909EA BRC4M Series TEMPERATURE SETTING BUTTON DISPLAY (SIGNAL TRANSMISSION) Use this button for SETTING TEMPERATURE. This blinks when a signal is being transmitted. BACKLIGHT BUTTON DISPLAY (OPERATION MODE) Press this button to turn the backlight on or off. This display shows the current OPERATION SIGNAL TRANSMITTER MODE.
Page 45 SiME341909EA Names and Functions 2.3.1 Signal Receiver Unit BRC7M632F-6, BRC7M618-6, BRC7N618-6 BRC4M61-6 Signal receiver unit installed type Signal receiver unit separate type (Example) 26 25 Layout of the display area varies by model. EMERGENCY OPERATION SWITCH This switch is readily used if the remote controller does not work.
Page 46 Names and Functions SiME341909EA 2.3.2 How to Check Initial Set Value Press the INSPECTION button to check the initial set value. Press the INSPECTION button twice to return to the normal mode. Initial set value Indoor unit model type Initial set value Ceiling mounted cassette FXFSQ-AR 2111...
Page 47: Main/Sub Setting
SiME341909EA Main/Sub Setting 3. Main/Sub Setting Main/Sub setting is necessary when 1 indoor unit is controlled by 2 remote controllers. The remote controllers are set at factory to Main, so you have to change one remote controller from Main to Sub. To change a remote controller from Main to Sub, proceed as follows: Wired Remote Controller (BRC1E63) 3.1.1 Field Settings The designation of the main and sub remote controllers can be swapped.
Page 48: Wired Remote Controller (Brc1H81 Series)
Main/Sub Setting SiME341909EA 2. When 2 remote controllers are being used, it is not possible to change the setting from Main to Sub if one of the remote controllers is already set as Main. Wired Remote Controller (BRC1H81 Series) When using 1 remote controller Once the controller is powered, it will automatically start up: If it is the first and only controller that is connected to the indoor unit, it will automatically get designated as master controller.
Page 49: When Wireless Remote Controller Is Used Together
SiME341909EA Main/Sub Setting Result: The controller is now designated as slave. Note(s) The following functions are not available for slave controllers:  Auto operation mode  Individual airflow direction  Filter auto clean  Setback temperature setpoints  Draft prevention ...
Page 50: Address Setting For Wireless Remote Controller
Address Setting for Wireless Remote Controller SiME341909EA 4. Address Setting for Wireless Remote Controller If setting multiple wireless remote controllers to operate in one room, perform address setting for the receiver and the wireless remote controller. (This includes an individual remote controller control using the group operation.) (For the wiring for the group operation, please refer to the installation manual attached to the indoor unit and technical guide.) Setting for Signal Receiver PCB...
Page 51: Setting For Brc4M Series
SiME341909EA Address Setting for Wireless Remote Controller Setting for BRC4M Series The address for the wireless remote controller is set to 1 at the factory. To change the setting, proceed as follows: 1. Hold down the FILTER SIGN RESET button and the INSPECTION button for at least 4 seconds to get the Field Setting mode.
Page 52: Multiple Settings A/B
Address Setting for Wireless Remote Controller SiME341909EA Multiple Settings A/b The command such as operation mode or temperature setting by this remote controller will be rejected when the target indoor unit operation is restricted as by an external control such as centralized control.
Page 53: Centralized Control Group No. Setting
SiME341909EA Centralized Control Group No. Setting 5. Centralized Control Group No. Setting BRC1E63 Group No. Setting (Group) Basic screen is displayed. Press and hold Press the Cancel the Cancel button button once. for 4 seconds or more. Select Group Address and then press the Menu/Enter button.
Page 54 Centralized Control Group No. Setting SiME341909EA Group No. Setting (Unit) Basic screen is displayed. Press and hold Press the Cancel the Cancel button button once. for 4 seconds or Select Group Address more. and then press the Menu/Enter button. Service Item 2 is settings menu displayed.
Page 55: Brc1H81 Series
SiME341909EA Centralized Control Group No. Setting BRC1H81 Series Group address To control the system with central control equipment, you need to set addresses for:  Groups (Group) and/or  Units (Group (Unit)). The Group address menu has two levels. You define groups and/or units in the first level, and set or release addresses for those groups and/or units in the second.
Page 56: Group No. Setting Example
Centralized Control Group No. Setting SiME341909EA Group No. Setting Example Central Remote Controller Indoor/Outdoor Outdoor/Outdoor Indoor/Outdoor Outdoor/Outdoor F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 Group Control by Remote Controller Main 1-00...
Page 57: Service Settings Menu, Maintenance Menu
SiME341909EA Service Settings Menu, Maintenance Menu 6. Service Settings Menu, Maintenance Menu BRC1E63 Operating the remote controller allows service data to be acquired and various services to be set. Basic screen is displayed. Press and hold the Press the Cancel Cancel button button once.
Page 58 Service Settings Menu, Maintenance Menu SiME341909EA 6.1.1 Service Settings Menu Service settings menu Item 2 Remarks Test Operation — — Maintenance Contact None — Maintenance Contact —, 0 to 9 (in order) Field Settings Indoor Unit No. — Mode No. —...
Page 59 SiME341909EA Service Settings Menu, Maintenance Menu 6.1.2 Maintenance Menu Maintenance Item 2 Remarks Menu Model Name Unit No. Select the unit number you want to check. Indoor unit The model names are displayed. (A model code may be displayed instead, depending on Outdoor unit the particular model.) R-32 mark display...
Page 60 Service Settings Menu, Maintenance Menu SiME341909EA Maintenance Item 2 Remarks Menu Addressed Unit No.: 0 - 15 Select the unit number you want to check. Sensor Code Value Remote controller thermistor (°C) Suction air thermistor (°C) ∗5 Heat exchanger liquid pipe thermistor (°C) Heat exchanger gas pipe thermistor (°C) Indoor unit address No.
Page 61: Brc1H81 Series
SiME341909EA Service Settings Menu, Maintenance Menu BRC1H81 Series 6.2.1 To enter the installer menu Press and keep it pressed until the information screen appears. The presence of icons on the information screen depends on operation status. The controller may display more or less icons than are indicated here.
Page 62 SiME341909EA Part 4 Functions and Control 1. Function Flowchart................57 2. Stop Control ..................58 2.1 Abnormal Shutdown ................58 2.2 Slave Unit Stops during Master Unit Operation........58 3. Standby Control ..................59 3.1 Restart Standby..................59 4. Startup Control ..................60 4.1 Cooling Startup Control ................60 5.
Page 63: Function Flowchart
SiME341909EA Function Flowchart 1. Function Flowchart For detailed description of each function in the flow, refer to the details on related function on the following pages. Stop control (1) Abnormal shutdown (2) Slave unit stops during master unit operation Special control Standby control (1) Restart standby Thermostat ON...
Page 64: Stop Control
Stop Control SiME341909EA 2. Stop Control Abnormal Shutdown  If abnormal situation occurs to protect the compressor, initial thermostat OFF stops the outdoor unit.  Outdoor control will perform a retry start.  When the retry attempts reach a certain number, system will stop and error code is displayed on the remote control.
Page 65: Standby Control
SiME341909EA Standby Control 3. Standby Control Restart Standby Used to forcedly stop the compressor for a period of 5 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. In addition, the outdoor fan carry out the residual operation for a while to accelerate pressure equalizing and to suppress melting of the refrigerant to the evaporator.
Page 66: Startup Control
Startup Control SiME341909EA 4. Startup Control Before starting the compressor:  The capacitor is charged in the DC circuit of the inverter circuit, and  “Pre-pressure equalization” is performed to reducing the starting current of the compressor. Pc: High pressure sensor detection value Pe: Low pressure sensor detection value Ta: Outdoor air temperature Te: Low pressure equivalent saturation temperature...
Page 67: Normal Control
SiME341909EA Normal Control 5. Normal Control List of Functions in Normal Control Pc : High pressure sensor detection value Pe : Low pressure sensor detection value Electric Part Name RXQ6/8AR RXQ10/12AR RXQ14/16AR Function of Functional Part Symbol Compressor 1 PI control by Te target. ...
Page 68: Compressor Capacity Control
Normal Control SiME341909EA Compressor Capacity Control Te: Low pressure equivalent saturation temperature Capacity steps The compressor rotation speed is changed according to the control pressure.  Cooling: suction pressure sensor value is converted into evaporation saturated temperature (relation between pressure and evaporating temperature based on characteristics of refrigerant R-410A).
Page 69: Operating Priority And Rotation Of Compressors
SiME341909EA Normal Control Operating Priority and Rotation of Compressors Each compressor operates in the following order of priority. In the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1 to Pattern 3 according to the rotation of outdoor units. M1C: Compressor 1 M2C: Compressor 2 Pattern 1...
Page 70: Compressor Step Control
Normal Control SiME341909EA Compressor Step Control  The actual rotation speed per second of the compressor (rps) depends on the type of compressor: Actual rotation Model name Compressor speed RXQ6AR RXQ8-12AR RXQ14/16AR (rps) JT1GUVDYR frequency/2 – JT16KCVDYR frequency/3 –  The change of compressor capacity step corresponds to 1 rps / step. ...
Page 71: Protection Control
SiME341909EA Protection Control 6. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. Cooling The following control is performed in the entire system.
Page 72: Discharge Pipe Protection Control
Protection Control SiME341909EA Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against an error or transient increase of discharge pipe temperature. The following control is performed for each compressor of single unit as well as multi units. Normal control Discharge pipe Discharge pipe...
Page 73: Inverter Protection Control
SiME341909EA Protection Control Inverter Protection Control Inverter current protection control and radiation fin temperature control are performed to prevent tripping due to an abnormality, or transient inverter overcurrent, and fin temperature increase. In the case of multi-outdoor-unit system, each compressor performs these controls in the following sequence.
Page 74: Special Control
Special Control SiME341909EA 7. Special Control Outdoor Unit Rotation In the case of multi-outdoor-unit system, this outdoor unit rotation is used to prevent the compressor from breaking down due to unbalanced oil level between outdoor units. Details of outdoor unit rotation In the case of multi-outdoor-unit system, each outdoor unit is given an operating priority for the control.
Page 75: Oil Return Control
SiME341909EA Special Control Oil Return Control In order to prevent the compressor from running out of oil, the oil return control is conducted to recover oil that has flowed out from the compressor to the system side. Tc : High pressure equivalent saturation temperature Te : Low pressure equivalent saturation temperature Ts: Suction pipe temperature detected by thermistor R3T Starting Conditions...
Page 76: Inverter Pre-Heat Control
Special Control SiME341909EA Inverter Pre-Heat Control Inverter pre-heat control is performed by each compressor on its own. HTdi : Value of compressor discharge pipe temperature (Tdi) compensated with outdoor air temperature Ta : Outdoor air temperature Teg : Low pressure equivalent saturation temperature (°C) Tfin : Fin thermistor temperature 1) System is stopped (all compressors are stopped) Power supply ON...
Page 77: Outline Of Control (Indoor Unit)
SiME341909EA Outline of Control (Indoor Unit) 8. Outline of Control (Indoor Unit) Set Temperature and Control Target Temperature The relationship between remote controller set temperature and control target temperature is described below. Temperature ˚C Remote controller set temperature Cooling Control target temperature Examples are given to illustrate a control target temperature that satisfies the remote controller set temperature.
Page 78 Outline of Control (Indoor Unit) SiME341909EA 8.2.2 With Optional Infrared Presence/Floor Sensor The thermostat ON/OFF condition is determined by the difference between the remote controller set temperature and the detected temperature around people.  Normal operation  Cooling operation ΔT ≤ –1.0°C Normal operation Thermostat OFF (Thermostat ON)
Page 79: Automatic Airflow Rate Control
SiME341909EA Outline of Control (Indoor Unit) Automatic Airflow Rate Control The automatic airflow rate control (Five steps from H to L) is based on the difference between control target temperature and set temperature. When airflow Conditions Automatic airflow rate rate is set Cooling Thermostat ON The fan tap is determined...
Page 80: Airflow Direction Control
Outline of Control (Indoor Unit) SiME341909EA Airflow Direction Control 8.4.1 Without Optional Infrared Presence/Floor Sensor Refer to the table below for controlling the horizontal flap (or the vertical flap) for airflow direction adjustment. Conditions FXAQ-AR Cooling Direction set Thermostat ON Thermostat OFF Swing set Thermostat ON...
Page 81: Auto Draft Reducing Control (Fxfsq-Ar Only)
SiME341909EA Outline of Control (Indoor Unit) Auto Draft Reducing Control (FXFSQ-AR only) In the case where both this control is activated and auto airflow direction control (eco full automatic control) is set, when human presence is detected, the airflow direction is automatically set to horizontal (P0) to reduce discomfort by direct airflow.
Page 82: Drain Pump Control
Outline of Control (Indoor Unit) SiME341909EA Drain Pump Control 8.7.1 Normal Operation Float switch Thermostat (running) Error display Drain pump 5 min.  The float switch is ON in normal operation.  When cooling operation starts (thermostat ON), the drain pump turns ON simultaneously. ...
Page 83 SiME341909EA Outline of Control (Indoor Unit) 8.7.3 If the Float Switch is OFF with the Thermostat OFF in Cooling Operation Float switch Thermostat (running) Error display Drain pump 5 min. 5 sec.  When the float switch turns OFF, the drain pump turns ON simultaneously. ...
Page 84: Freeze-Up Prevention Control
Outline of Control (Indoor Unit) SiME341909EA Freeze-Up Prevention Control Freeze-Up Prevention by Off Cycle (Indoor Unit Individual Control) When the temperature detected by liquid pipe temperature thermistor of the indoor heat exchanger drops too low, the unit enters freeze-up prevention control in accordance with the following conditions, and is also set in accordance with the conditions given below.
Page 85: Dew Condensation Prevention Control
SiME341909EA Outline of Control (Indoor Unit) Dew Condensation Prevention Control 8.9.1 FXFSQ-AR Models Indoor operation under a certain condition will limit the swing range of the flaps. Position P0 continues for 30 minutes. Dew condensation Dew condensation prevention control OFF prevention control in action Thermostat OFF Refer to the table below for flap action under this control.
Page 86: Electronic Expansion Valve Control
Outline of Control (Indoor Unit) SiME341909EA 8.10 Electronic Expansion Valve Control Electronic expansion valves in indoor units have the functions of conducting superheating degree control in cooling operation. However, if the indoor units receive any control command such as a protection control command or a special control command from the outdoor unit, the units will give a priority to the control command.
Page 87: Circulation Airflow (Fxfsq-Ar Only)
SiME341909EA Outline of Control (Indoor Unit) 8.11 Circulation Airflow (FXFSQ-AR only) Unevenness of room temperature and the startup time are improved by repeating 2-direction horizontal blow-off and swing alternately. 8.11.1 Initiation Conditions of Circulation Operation When operation starts (in the startup state) Circulation airflow operation is performed.
Page 88 Outline of Control (Indoor Unit) SiME341909EA 8.11.3 Operational Concept (Designer Panel) Cooling : Factory setting Movement pattern 01: Pattern 1 120 600 120 600 Appearance Time 02: Pattern 2 (seconds) 03: Pattern 3 13 (23)-14 04: Pattern 4 Indicates the horizontal flap is in the position of reducing airflow volume (the flap is inverted). Part 4 Functions and Control...
Page 89 SiME341909EA Part 5 Field Settings and Test Operation 1. Field Settings for Indoor Unit..............84 1.1 Field Settings with Remote Controller ............84 1.2 List of Field Settings for Indoor Unit ............88 1.3 Applicable Field Settings ................90 1.4 Details of Field Settings for Indoor Unit..........91 1.5 Operation Control Mode ...............102 2.
Page 90: Field Settings For Indoor Unit
Field Settings for Indoor Unit SiME341909EA 1. Field Settings for Indoor Unit Field Settings with Remote Controller Individual function of indoor unit can be changed from the remote controller. At the time of installation or after service inspection / repair, make the field setting in accordance with the following description.
Page 91 SiME341909EA Field Settings for Indoor Unit Press Menu/Enter button. Setting Setting confirmation screen confirmation screen is displayed. Select Yes and press Menu/Enter button. Setting details are determined and field settings screen returns. In the case of multiple setting changes, repeat (3) to (7). After all setting changes are completed, press Cancel button twice.
Page 92 Field Settings for Indoor Unit SiME341909EA 1.1.2 BRC1H81 Series The controller allows for making field settings related to the indoor unit, and to the controller itself. Field settings Screen Indoor unit ▪ Define a mode by setting a Mode number ▪...
Page 93 SiME341909EA Field Settings for Indoor Unit 1.1.3 BRC4M Series Mode No. First code Second code No. Setting To set the field settings, you have to change:  Mode No.  First code No.  Second code No. To change the field settings, proceed as follows: 1.
Page 94: List Of Field Settings For Indoor Unit
Field Settings for Indoor Unit SiME341909EA List of Field Settings for Indoor Unit : Factory setting Mode First Description Second Code No. Page Code Reference (∗2) Filter cleaning Long life filter Approx. Approx. sign interval 10,000 5,000 hrs. hrs. Light Heavy —...
Page 95 SiME341909EA Field Settings for Indoor Unit Mode First Description Second Code No. Page Code Reference (∗2) Direct duct connection Not equipped Equipped — — Drain pump and humidifier 15 (25) Not interlocked Interlocked — — interlock selection Individual ventilation setting —...
Page 96: Applicable Field Settings
Field Settings for Indoor Unit SiME341909EA Applicable Field Settings First Mode FXDQ-PD Code Setting Contents FXFSQ-AR FXDQ-ND FXMQ-PB FXMQ-AR FXAQ-AR Filter cleaning sign interval      Filter type      Remote controller thermistor  ...
Page 97: Details Of Field Settings For Indoor Unit
SiME341909EA Field Settings for Indoor Unit Details of Field Settings for Indoor Unit 1.4.1 Filter Cleaning Sign Interval, Filter Type When the setting 10 (20)-3 is set to 01 (Displayed), filter cleaning sign is displayed on the remote controller after a certain period of operation time. This setting is used to change the display interval of filter cleaning sign when the filter contamination is heavy.
Page 98 Field Settings for Indoor Unit SiME341909EA When the unit is equipped with an infrared presence/floor sensor: : Factory setting Mode No. Second Code No. First Code No. 10 (20) 11 (21) The thermistor to be used Remote controller thermistor — —...
Page 99 SiME341909EA Field Settings for Indoor Unit 1.4.4 Time for Absence Area Detection (For units with the infrared presence/floor sensor only) By selecting the energy-saving operation mode in the absence, the target temperature is shifted to the energy-saving end by 1°C (maximum 2°C) after the state of absence continues for a certain period of time.
Page 100 Field Settings for Indoor Unit SiME341909EA 1.4.7 Setting the Rate of Human Detection (For units with the infrared presence/floor sensor only) Set the sensitivity of the infrared presence/floor sensor.  The infrared presence/floor sensor can be disabled by selecting the Second code No. 04. When the infrared presence/floor sensor is disabled, the remote controller menu does not display some functions such as the automatic draft reduction, energy-saving operation in absence and halt in absence.
Page 101 SiME341909EA Field Settings for Indoor Unit 1.4.9 Compensating the Temperature around People (For units with the infrared floor sensor) Change the ratio between the suction air temperature and floor temperature used to calculate the temperature around people. The temperature around people is calculated using the values of the suction air thermistor and the infrared floor sensor.
Page 102 Field Settings for Indoor Unit SiME341909EA 1.4.12 Thermostat Differential Changeover Set when remote sensor is to be used. Differential value during thermostat ON/OFF control can be changed. : Factory setting Mode First Second Contents Code No. Code No. 01 1ºC 12 (22) 0.5ºC 1.4.13 Auto Restart after Power Failure...
Page 103 SiME341909EA Field Settings for Indoor Unit 1.4.15 Compensating the Floor Temperature (Cooling) (For units with the infrared presence/floor sensor) Offset the detected value of the infrared presence/floor sensor with a certain temperature. This setting should be used to have the actual floor temperature detected when, for example, the unit is installed close to a wall.
Page 104 Field Settings for Indoor Unit SiME341909EA  FXFSQ-AR with Designer panel : Factory setting Mode First Second FXFSQ25-80 FXFSQ100-140 Contents Code No. Code No. (All round outlet) (All round outlet) Lower than Lower than 01 Standard 2.4 m 3.2 m Lower than Lower than 13 (23)
Page 105 SiME341909EA Field Settings for Indoor Unit 1.4.19 Airflow Direction Adjustment Range Make the following airflow direction setting according to the respective purpose.  FXFSQ-AR, FXAQ-AR : Factory setting Mode First Second Contents Code No. Code No. Draft prevention (Upward) 13 (23) 02...
Page 106 Field Settings for Indoor Unit SiME341909EA 1.4.22 Setting of Swing Patterns when Cooling Thermostat is OFF In cooling operation, when the airflow direction is set to swing, flaps swing even when the thermostat is OFF. This setting allows to change the airflow direction when the thermostat is OFF.
Page 107 SiME341909EA Field Settings for Indoor Unit 1.4.26 Direct Duct Connection This is used when "fresh air intake kit equipped with fan" is connected by duct directly. The indoor fan carries out residual operation for 1 minute after the thermostat is stopped. (For the purpose of preventing dust on the air filter from falling off.) When the second code No.
Page 108: Operation Control Mode
Field Settings for Indoor Unit SiME341909EA 1.4.30 Setting Restricted/Permitted of Airflow Block  For Sensing flow type only The airflow block function cannot be enabled when closure material kit, fresh air intake kit, separately installed natural evaporation type humidifier, or branch air duct is equipped, due to the possibility of dew condensation.
Page 109 SiME341909EA Field Settings for Indoor Unit How to Select Operation Mode Whether operation by remote controller will be possible or not for turning ON/OFF, controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below.
Page 110: Field Settings For Outdoor Unit
Field Settings for Outdoor Unit SiME341909EA 2. Field Settings for Outdoor Unit This section shows a list of field setting items possible to set at time of initial startup. For details of DIP switch setting, setting mode ("mode 2") and monitoring mode ("mode 1"), refer to information on the following pages.
Page 111: Settings By Dip Switches
SiME341909EA Field Settings for Outdoor Unit Settings by DIP Switches For factory mounted board only. DIP switch Setting item Description Setting Do not change the factory settings. DS1-1 Not used ~DS1-4 OFF (Factory setting) Part 5 Field Settings and Test Operation...
Page 112 Field Settings for Outdoor Unit SiME341909EA 2.2.1 DIP Switch Setting Mounting a Spare PCB Caution:  After replacement with spare PCB, be sure to make settings shown in the table below. The procedure for making settings of spare PCB is different from that used for factory settings described above.
Page 113 SiME341909EA Field Settings for Outdoor Unit The figure below shows the required position of the DIP switches on spare PCB for RXQ-A. Change DIP switches at time of power disconnected. Application The setting method (represents the position of switches) model RXQ6AR Set DS1-2, DS1-3, DS1-4 and DS2-2 to ON.
Page 114: Settings By Bs Buttons
Field Settings for Outdoor Unit SiME341909EA Settings by BS Buttons The following settings can be made using the BS buttons on the PCB. In case of a multi outdoor system, make these settings with the master outdoor unit (settings made with a slave unit are disabled). BS buttons 7 segment display (SEG1-3) SEG1 SEG2 SEG3...
Page 115 SiME341909EA Field Settings for Outdoor Unit  Selection between normal mode, monitor mode (Mode 1) and setting mode (Mode 2). SEG1 SEG2 SEG3 Normal mode MODE (BS1) button for more than 5 sec. Press MODE (BS1) button once. Press (Initial condition) Monitor mode (Mode 1) Setting mode (Mode 2) Select a setting item with...
Page 116: Normal Mode
Field Settings for Outdoor Unit SiME341909EA Normal Mode 1. Indoor/outdoor transmission status: Used to check for the initial status of indoor/outdoor transmission. SEG1 SEG2 SEG3 Blinking Initializing Initializing completed 2. Descriptions: Used to display an error content. SEG1 SEG2 SEG3 Normal Example: E7-01 Error...
Page 117: Monitor Mode (Mode 1)
SiME341909EA Field Settings for Outdoor Unit Monitor Mode (Mode 1) In the monitor mode, information can be retrieved about settings related to performance, addresses, number of units and actual operation data. 2.5.1 Retrieve data by using BS button outdoor unit main PCB SEG1 SEG2 SEG3 Normal To enter monitor mode, press the...
Page 118 Field Settings for Outdoor Unit SiME341909EA 2.5.2 Overview of Monitor Mode (Mode 1) Item Contents Display Display ∗1 Description Description Master/slave outdoor unit Undefined Master unit Slave 1 unit Slave 2 unit Low noise operation state In normal operation display In low noise operation Demand operation state In normal operation...
Page 119 SiME341909EA Field Settings for Outdoor Unit Item Contents Display Display ∗1 Description Description Description of retry Refer to information in Check for (latest) Descriptions of Errors/Retries on page 114. Description of retry (1 cycle before) Description of retry (2 cycles before) Number of outdoor units Possible 0-63 connected in a multi...
Page 120 Field Settings for Outdoor Unit SiME341909EA 2.5.3 Check for Descriptions of Errors/Retries Follow the procedure described below. This procedure is different than indicated in previous Monitor mode. The error codes for forced stop outdoor or retry are item:  17, 18, 19: description of error (outdoor system stopped operation). ...
Page 121: Setting Mode (Mode 2)
SiME341909EA Field Settings for Outdoor Unit Setting Mode (Mode 2) SEG1 SEG2 SEG3 Press and hold the MODE (BS1) button for 5 seconds or more and set to Setting mode. Normal MODE Selection of setting items Press the SET (BS2) button and set the 7 segment display to a setting item shown in the table below.
Page 122 Field Settings for Outdoor Unit SiME341909EA 2.6.1 Overview of Setting Mode (Mode 2) This overview shows the available settings by using the press buttons on the outdoor unit PCB. Item Contents Display Display Description Description Do not change contents. — —...
Page 123 SiME341909EA Field Settings for Outdoor Unit Item Contents Display Display Description Description External Low noise level when the external low Level 1 night-time low noise signal is input at option Level 2 noise operation DTA104A61. Level 3 level Level 4 Automatic Time to start automatic “night-time low About 8:00 PM...
Page 124 Field Settings for Outdoor Unit SiME341909EA Item Contents Display Display Description Description Do not change contents. — — — — Do not change contents. — — — — Do not change contents. — — — — Do not change contents. —...
Page 125 SiME341909EA Field Settings for Outdoor Unit 2.6.2 Details of Setting Mode (Mode 2)  Mode 2-2: Low noise/demand address: address for low noise/demand operation.  1 or more systems (maximum 10 systems wired by “F1F2 OUT/D”) can operate use the LNO (Low Noise Operation) or/and the DE (Demand Control) by instruction of field supplied input to optional board DTA104A61/62.
Page 126 Field Settings for Outdoor Unit SiME341909EA  Mode 2-21: Refrigerant recovery / vacuuming.  Default value: 0. Recovery mode not active.  Set 1: outdoor and indoor electronic expansion valves are opened fully (except EV3 for PCM vessel). Compressor(s) do not operate. ...
Page 127 SiME341909EA Field Settings for Outdoor Unit  Mode 2-26: Start time automatic night-time low noise operation. When the auto night-time low noise operation is active (refer to field setting 2-22) outdoor will start when start time is reached time is reached. The time judgment is taken from outdoor air tendency. *When the outdoor air temperature becomes highest, the unit is sensed as 2:00 PM Night mode...
Page 128 Field Settings for Outdoor Unit SiME341909EA  In case there is more than 1 compressor in a system (outdoor is 14/16 HP, or multi outdoor configuration) all compressor inverter PCBs will perform the power transistor check. In such case, disconnect U/V/W fasten terminals on all compressors. Avoid accidental touch of fasten terminals to short-circuit or earth leak to casing.
Page 129 SiME341909EA Field Settings for Outdoor Unit  When operation parameters return to normal range, the capacity priority is switched OFF, enable to reduce airflow rate depending on night-time low noise operation is still required (end time for low-night noise operation is not reached or external input night-time low noise operation is still closed).
Page 130 Field Settings for Outdoor Unit SiME341909EA  Mode 2-39: Emergency operation “Slave 1”. To disable permanent compressor operation of “Slave 1” unit of a multi outdoor system:  Default value: 0. Compressor operation enabled.  Field set:  Set 1: Inverter 1 compressor is disabled. ...
Page 131 SiME341909EA Field Settings for Outdoor Unit  2: Quick. Undershoot during cooling operation is allowed compared to the requested refrigerant temperature, in order to achieve the required room temperature very fast. The overshoot is allowed from the start up moment. In case of cooling operation the evaporating temperature is allowed to go down to 6°C on temporary base depending on the situation.
Page 132: Eco Mode Setting
Field Settings for Outdoor Unit SiME341909EA Eco Mode Setting By connecting an external contact input in the input of mode configuration and external control adaptor (sold separately), you may control Eco mode setting, limiting compressor operation load and power consumption. When Eco mode is set as unavailable (Outdoor unit external control adaptor is unnecessary) Eco mode control is unavailable during cooling operation.
Page 133: Night-Time Low Noise Operation And Demand Operation
SiME341909EA Field Settings for Outdoor Unit Night-Time Low Noise Operation and Demand Operation Night-time Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise by 2-3 dB. Setting Content Level 1...
Page 134 Field Settings for Outdoor Unit SiME341909EA Image of operation in the case of A Operation If capacity priority is set in sound Capacity priority setting, the fan speed will be increased according to the load of air conditioning when load is heavier. Rated Operation sound during low noise...
Page 135 SiME341909EA Field Settings for Outdoor Unit Setting of Demand Operation By connecting the external contact input to the demand input of the external control adaptor for outdoor unit (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition.
Page 136 Field Settings for Outdoor Unit SiME341909EA Image of operation in the case of A Power consumption Rated The power Demand level 1 Demand level 2 Demand level 3 consumption instructing instructing instructing during the demand level 1 instructing can be set with the Power consumption set by "Demand 1 level...
Page 137: Test Operation
SiME341909EA Test Operation 3. Test Operation Checks before Test Operation Before carrying out a test operation, proceed as follows: Step Action Make sure the voltage at the primary side of the safety breaker is: 415 V ± 10% for 3-phase units Fully open the liquid and the gas stop valve.
Page 138: Test Operation Procedure
Test Operation SiME341909EA Test Operation Procedure The procedure below describes the test operation of the complete system. This operation checks and judges following items:  Check of wrong wiring (communication check with indoor units).  Check of the stop valves opening. ...
Page 139: Turn Power On
SiME341909EA Test Operation Turn Power ON • Be sure to turn the power ON 6 hours before starting operation to protect Turn outdoor unit and indoor compressors. unit power ON. • Check to be sure the transmission is normal. Check the 7 segment display of In a normal condition, the 7-segment display is OFF.
Page 140 SiME341909EA Part 6 Service Diagnosis 1. Servicing Items to be Confirmed ............136 1.1 Troubleshooting..................136 1.2 Precautions for Maintenance..............136 2. Symptom-based Troubleshooting ............138 2.1 With Optional Infrared Presence/Floor Sensor........140 2.2 For All Outdoor Units................141 3. Refrigerant Properties (R-410A) ............142 4. Troubleshooting with Remote Controller..........143 4.1 BRC1E63 .....................143 4.2 BRC1H81 Series ..................144 4.3 BRC4M Series..................145...
Page 141 SiME341909EA 5.30 Discharge Pipe Temperature Abnormality ...........204 5.31 Wet Alarm.....................206 5.32 Refrigerant Overcharged..............208 5.33 Harness Abnormality (between Outdoor Unit Main PCB and Inverter PCB) ......209 5.34 Outdoor Fan PCB Abnormality.............210 5.35 Thermistor Abnormality ................211 5.36 High Pressure Sensor Abnormality ............213 5.37 Low Pressure Sensor Abnormality ............214 5.38 Inverter PCB Abnormality..............215 5.39 Momentary Power Failure during Test Operation ........217...
Page 142: Servicing Items To Be Confirmed
Servicing Items to be Confirmed SiME341909EA 1. Servicing Items to be Confirmed Troubleshooting (1) Initial verification and troubleshooting 1. Properly understand the end user's needs and issues. 2. Check the cause of errors according to the description provided by the end user. 3.
Page 143 SiME341909EA Servicing Items to be Confirmed (4) Precautions for outdoor unit multi system All the settings should be made in the master unit. Settings in the slave units are deemed unavailable. Differentiation of Master/Slave Units 1. The outdoor unit master unit is the unit which has the connecting wires to the indoor unit. All the other units are slave units.
Page 144: Symptom-Based Troubleshooting
Symptom-based Troubleshooting SiME341909EA 2. Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system does not start operation at all. Blowout of fuse(s) Turn Off the power supply and then replace the fuse(s). Cutout of breaker(s) • If the knob of any breaker is in its OFF position, turn ON the power supply.
Page 145 SiME341909EA Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure A white mist Indoor unit Uneven temperature distribution Clean the inside of the indoor unit. comes out from In cooling operation, the due to heavy stain of the inside of the system. ambient humidity is high. the indoor unit (This indoor unit is installed in a place with much oil or dust.)
Page 146: With Optional Infrared Presence/Floor Sensor
Symptom-based Troubleshooting SiME341909EA With Optional Infrared Presence/Floor Sensor Problem Measure 1 Louver operation different from setting Refer to the flowchart below. Individual airflow direction setting different from the actual Check the "Louver operation different from setting" error airflow direction diagnosis. 3 While not operating, the louver does not close completely.
Page 147: For All Outdoor Units
SiME341909EA Symptom-based Troubleshooting For All Outdoor Units Problem Measure Decrease of main circuit power supply insulation Define the measure using the flowchart below. resistance (Less than 1 MΩ) Decrease of main circuit power supply insulation resistance Cut the power supply. Remove the compressor wiring from the power supply terminal.
Page 148: Refrigerant Properties (R-410A)
Refrigerant Properties (R-410A) SiME341909EA 3. Refrigerant Properties (R-410A) 3.90 4.00 3.80 3.70 3.50 3.60 3.40 3.30 3.10 3.20 3.00 2.90 2.70 2.80 2.60 2.50 2.30 2.40 2.20 2.10 1.90 2.00 1.80 1.70 1.60 1.50 1.40 1.30 1.20 1.10 1.00 0.90 0.80 0.70 0.60...
Page 149: Troubleshooting With Remote Controller
SiME341909EA Troubleshooting with Remote Controller 4. Troubleshooting with Remote Controller BRC1E63 The illustrations are for BRC1E63 as representative. The following message is displayed on the screen when an error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Screen Operation lamp Menu/Enter button...
Page 150: Brc1H81 Series
Troubleshooting with Remote Controller SiME341909EA BRC1H81 Series When the system is in error and the controller presents you with an error screen from as soon as you try to enter the main menu, consult your dealer. Error screen (example) 4.2.1 Refrigerant leak detection When the system detects a refrigerant leak, an alarm goes off.
Page 151: Brc4M Series
SiME341909EA Troubleshooting with Remote Controller BRC4M Series When the air conditioner stops in emergency, the operating indicator lamp on the indoor unit starts blinking. Take the following steps yourself to read the error code that appears on the display. Contact your local dealer with this code.
Page 152: Troubleshooting By Error Code
Troubleshooting by Error Code SiME341909EA 5. Troubleshooting by Error Code Error Codes and Descriptions k: ON h: OFF l: Blink Operation Reference Error code Descriptions lamp page Indoor Unit External protection device abnormality Indoor unit PCB abnormality Drain level control system abnormality Indoor fan motor lock, overload Indoor fan motor abnormality Power supply voltage abnormality...
Page 153 SiME341909EA Troubleshooting by Error Code Operation Reference Error code Descriptions lamp page Outdoor Unit Outdoor unit main PCB abnormality Current leakage detection Missing of leakage detection core Activation of high pressure switch Activation of low pressure sensor Compressor motor lock Outdoor fan motor abnormality Electronic expansion valve coil abnormality Discharge pipe temperature abnormality...
Page 154: Error Codes (Sub Codes)
Troubleshooting by Error Code SiME341909EA Error Codes (Sub Codes) If an error code like the one shown below is displayed when the navigation remote controller (BRC1E series) is in use, make a detailed diagnosis or a diagnosis of the relevant unit referring to the attached list of detailed error codes.
Page 155 SiME341909EA Troubleshooting by Error Code Troubleshooting Error code Description of error Diagnosis Infrared floor sensor error A disconnection of the temperature correction circuit (thermistor) of the infrared floor sensor has been CE - 02 detected. Check if the connector is properly connected. Infrared floor sensor error A short-circuit of the temperature correction circuit (thermistor) of the infrared floor sensor has been...
Page 156 Troubleshooting by Error Code SiME341909EA 5.2.2 Outdoor Unit, System Troubleshooting Error code Description of error Diagnosis E1 - 01 Outdoor unit PCB error Refer to the E1 flowchart and make a diagnosis based on the Error code shown to the left. E1 - 02 Defective outdoor unit PCB E2 - 01...
Page 157 SiME341909EA Troubleshooting by Error Code Troubleshooting Error code Description of error Diagnosis E9 - 03 Electronic expansion valve coil Y2E error (Master) E9 - 06 Electronic expansion valve coil Y2E error (Slave 1) E9 - 09 Electronic expansion valve coil Y2E error (Slave 2) E9 - 26 Electronic expansion valve coil Y4E error (Master) E9 - 27...
Page 158 Troubleshooting by Error Code SiME341909EA Troubleshooting Error code Description of error Diagnosis H9 - 01 Defective outdoor air thermistor (Master) Refer to the H9 flowchart and make a diagnosis based H9 - 02 Defective outdoor air thermistor (Slave 1) on the Error code shown to the left. H9 - 03 Defective outdoor air thermistor (Slave 2) J3 - 16...
Page 159 SiME341909EA Troubleshooting by Error Code Troubleshooting Error code Description of error Diagnosis Defective subcooling heat exchanger outlet thermistor J9 - 01 (Master) Defective subcooling heat exchanger outlet thermistor J9 - 02 (Slave 1) Defective subcooling heat exchanger outlet thermistor J9 - 03 Refer to the J9 flowchart and make a diagnosis (Slave 2) of the relevant thermistor based...
Page 160 Troubleshooting by Error Code SiME341909EA Troubleshooting Error code Description of error Diagnosis L1 - 42 IPM error: Compressor M2C (Slave 2) L1 - 43 Defective current sensor: Compressor M2C (Slave 2) L1 - 44 Current offset: Compressor M2C (Slave 2) L1 - 45 IGBT error: Compressor M2C (Slave 2) L1 - 46...
Page 161 SiME341909EA Troubleshooting by Error Code Troubleshooting Error code Description of error Diagnosis L9 - 01 Compressor M1C startup error (Master) L9 - 05 Compressor M1C startup error (Slave 1) L9 - 06 Compressor M1C startup error (Slave 2) L9 - 10 Compressor M2C startup error (Master) L9 - 11 Compressor M2C startup error (Slave 1)
Page 162 Troubleshooting by Error Code SiME341909EA Troubleshooting Error code Description of error Diagnosis Defective reactor thermistor 1 P3 - 01 (Master: Inverter PCB 1) Defective reactor thermistor 1 P3 - 02 (Slave 1: Inverter PCB 1) Defective reactor thermistor 1 P3 - 03 (Slave 2: Inverter PCB 1) Defective reactor thermistor 2 P3 - 04...
Page 163 SiME341909EA Troubleshooting by Error Code Troubleshooting Error code Description of error Diagnosis U1 - 16 Open phase for power supply (Master) U1 - 17 Open phase for power supply (Slave 1) U1 - 18 Open phase for power supply (Slave 2) Refer to the U1 flowchart and make a diagnosis based on the Error code shown to the left.
Page 164: External Protection Device Abnormality
Troubleshooting by Error Code SiME341909EA External Protection Device Abnormality Applicable All indoor unit models Models Error Code Method of Error Detects open or short circuit between external input terminals in indoor unit. Detection Error Decision An open circuit occurs between external input terminals with the remote controller set for Conditions external ON/OFF input.
Page 165: Indoor Unit Pcb Abnormality
SiME341909EA Troubleshooting by Error Code Indoor Unit PCB Abnormality Applicable All indoor unit models Models Error Code Method of Error Data from EEPROM is checked. Detection Error Decision Data cannot be correctly received from the EEPROM Conditions EEPROM: Type of nonvolatile memory. Maintains memory contents even when the power supply is turned OFF.
Page 166: Drain Level Control System Abnormality
Troubleshooting by Error Code SiME341909EA Drain Level Control System Abnormality Applicable FXFSQ-AR, FXDQ-PD, FXDQ-ND, FXMQ-PB, FXMQ-AR Models Error Code Method of Error By float switch OFF detection Detection Error Decision Float switch goes OFF when the conditions for water level rise are not met Conditions Supposed ...
Page 167 SiME341909EA Troubleshooting by Error Code The drain pump works when the Check the drain piping for power supply is reset for the clogging or upward slope, etc. indoor unit. voltage of drain pump terminals (∗2) is in accordance to the criteria Replace the indoor unit control (∗3) (within 5 minutes of PCB (A1P).
Page 168: Indoor Fan Motor Lock, Overload
Troubleshooting by Error Code SiME341909EA Indoor Fan Motor Lock, Overload Applicable FXMQ40PB, FXAQ-AR Models Error Code Method of Error Abnormal fan revolutions are detected by a signal output from the fan motor. Detection Error Decision The fan revolutions do not increase. Conditions Supposed ...
Page 169 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn OFF the power supply, and then wait for a period of 10 minutes. Are there any foreign matter Remove the foreign matter.
Page 170: Indoor Fan Motor Abnormality
Troubleshooting by Error Code SiME341909EA Indoor Fan Motor Abnormality 5.7.1 Indoor Fan Motor Abnormality (FXFSQ-AR) Applicable FXFSQ-AR Models A6-10 Error Code Method of Error  Detection from the current flow on the fan PCB (A1P)  Detection from the rotation speed of the fan motor in operation Detection ...
Page 171 SiME341909EA Troubleshooting by Error Code The HAP lamp on the indoor unit Replace the indoor unit control control PCB is PCB (A1P). blinking. Replace the indoor fan motor (M1F). ∗1 Check also if the relay connector between the indoor unit control PCB and the fan motor are correctly connected.
Page 172 Troubleshooting by Error Code SiME341909EA 5.7.2 Indoor Fan Motor Abnormality (FXMQ50-140PB) Applicable FXMQ50-140PB Models Error Code Method of Error  Error from the current flow on the fan PCB Detection  Error from the RPM of the fan motor in operation ...
Page 173 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn off the power and wait for 10 minutes. There is a foreign matter around the Remove the foreign matter.
Page 174 Troubleshooting by Error Code SiME341909EA The resistance among U, V, and W are unbalanced or Replace the indoor fan motor (M1F). short circuited. CHECK 17 Remove the signal connector from the fan motor and check the resistance. Between V and GND terminals, and between GND Replace the indoor fan and H...
Page 175 SiME341909EA Troubleshooting by Error Code 5.7.3 Indoor Fan Motor Abnormality (FXDQ-PD, FXDQ-ND) Applicable FXDQ-PD, FXDQ-ND Models Error Code Method of Error This error is detected if there is no revolution detection signal output from the fan motor. Detection Error Decision When no revolutions can be detected even at the maximum output voltage to the fan Conditions Supposed...
Page 176: Power Supply Voltage Abnormality
Troubleshooting by Error Code SiME341909EA Power Supply Voltage Abnormality 5.8.1 Power Supply Voltage Abnormality (FXFSQ-AR) Applicable FXFSQ-AR Models A8-01 Error Code Method of Error This error is detected by checking the voltage status with the microcomputer. Detection Error Decision Overvoltage or voltage drop is detected on the fan driver. Conditions Supposed ...
Page 177 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the condition of the power supply. Check if power supply voltage is 220-240 V±10%. There are problems Correct any fault.
Page 178 Troubleshooting by Error Code SiME341909EA 5.8.2 Power Supply Voltage Abnormality (FXMQ-PB) Applicable FXMQ-PB Models Error Code Method of Error Error is detected by checking the input voltage of the fan motor. Detection Error Decision When the input voltage of fan motor is 150 V or less, or 386 V or more. Conditions Supposed ...
Page 179: Electronic Expansion Valve Coil Abnormality, Dust Clogging
SiME341909EA Troubleshooting by Error Code Electronic Expansion Valve Coil Abnormality, Dust Clogging Applicable All indoor unit models Models A9, A9-02 Error Code Method of Error Electronic expansion valve coil conditions are checked via microcomputer. Detection The electronic expansion valve main body is checked for dust clogging via microcomputer. Error Decision Pin input for electronic expansion valve coil is abnormal when initializing microcomputer.
Page 180: Humidifier System Abnormality
Troubleshooting by Error Code SiME341909EA 5.10 Humidifier System Abnormality Applicable All indoor unit models Models Error Code Method of Error Water leakage from the humidifier system is detected based on float switch ON/OFF operation Detection while the compressor is not in operation. Error Decision The float switch changes from ON to OFF while the compressor is not in operation.
Page 181: Auto Grille Unit Error
SiME341909EA Troubleshooting by Error Code 5.11 Auto Grille Unit Error Applicable FXFSQ-AR (when auto grille panel BYCQ125EASF is installed) Models AH-12 Error Code Method of Error This error is determined when an abnormal signal from the auto grille kit is detected. Detection Error Decision Any of the following conditions is established while the grille is elevating.
Page 182: Defective Capacity Setting
Troubleshooting by Error Code SiME341909EA 5.12 Defective Capacity Setting Applicable All indoor unit models Models Error Code Method of Error Capacity is determined according to resistance of the capacity setting adaptor and the memory Detection inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is determined.
Page 183: Transmission Error (Between Indoor Unit Pcb And Fan Pcb)
SiME341909EA Troubleshooting by Error Code 5.13 Transmission Error (between Indoor Unit PCB and Fan PCB) Applicable FXMQ-PB Models Error Code Method of Error Transmission conditions between the indoor unit control PCB (A1P) and fan PCB (A2P) are Detection checked via microcomputer. Error Decision When normal transmission is not carried out for a certain duration.
Page 184 Troubleshooting by Error Code SiME341909EA Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the connector between indoor unit PCB (A1P) and fan Connect the connector accurately. PCB (A2P) accurately connected? (∗1) Confirm the condition of transmission on indoor unit...
Page 185: Transmission Error
SiME341909EA Troubleshooting by Error Code 5.14 Transmission Error Applicable FXFSQ-AR Models C1-01 Error Code Method of Error Check the condition of transmission using microcomputer. Detection Error Decision Error is decided when transmission has been lost for 15 seconds and the error code is Conditions displayed on the remote controller 60 seconds later.
Page 186: Transmission Error (Between Indoor Unit Pcb And Auto Grille Control Pcb)
Troubleshooting by Error Code SiME341909EA 5.15 Transmission Error (between Indoor Unit PCB and Auto Grille Control PCB) Applicable FXFSQ-AR (when auto grille panel BYCQ125EASF is installed) Models C1-06 Error Code Method of Error The status of communication between the indoor unit PCB (X70A) and the auto grille control Detection PCB (X12A) is checked with the microcomputer.
Page 187 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the X70A connector on the indoor Properly connect the connector. unit PCB properly connected? Is the X12A connector on the auto grille Properly connect the connector.
Page 188: Thermistor Abnormality
Troubleshooting by Error Code SiME341909EA 5.16 Thermistor Abnormality Applicable All indoor unit models Models C4, C5, C9 Error Code Method of Error The error is determined by the temperature detected by the thermistor. Detection Error Decision The thermistor becomes disconnected or shorted while the unit is running. Conditions Supposed ...
Page 189: Combination Abnormality (Between Indoor Unit Pcb And Fan Pcb)
SiME341909EA Troubleshooting by Error Code 5.17 Combination Abnormality (between Indoor Unit PCB and Fan PCB) Applicable FXMQ-PB Models Error Code Method of Error Transmission conditions with the fan PCB (A2P) are checked using the indoor unit PCB (A1P). Detection Error Decision Fan PCB (A2P) communication data is determined to be incorrect.
Page 190: Capacity Setting Abnormality
Troubleshooting by Error Code SiME341909EA 5.18 Capacity Setting Abnormality Applicable FXFSQ-AR Models C6-01 Error Code Method of Error This error is detected by checking communication between the PCB (A1P) and the fan Detection microcomputer. Error Decision Based on the communication data, decide whether the combination of capacity setting and the Conditions type of fan driver is correct.
Page 191: Indoor Unit Pcb Abnormality
SiME341909EA Troubleshooting by Error Code 5.19 Indoor Unit PCB Abnormality Applicable FXFSQ-AR Models C6-05 Error Code Method of Error This error is detected by checking the current sensor value. Detection Error Decision When an abnormal signal is detected at the start of operation of the fan motor. Conditions Supposed ...
Page 192: Infrared Presence/Floor Sensor Error
Troubleshooting by Error Code SiME341909EA 5.20 Infrared Presence/Floor Sensor Error Applicable FXFSQ-AR Models Error Code Method of Error The contents of a failure vary with the detailed error code. Check the code and proceed with the Detection flowchart. Error Decision Error is detected based on sensor output signals Conditions Supposed...
Page 193 SiME341909EA Troubleshooting by Error Code Troubleshooting Diagnosis procedure 1 Infrared presence sensor error (Error code CE-01) Is the connection of the connector on infrared presence Connect the connector correctly. sensor PCB (A3P) and the connector X81A on A1P normal? Is the connection of the Connect the connector correctly.
Page 194 Troubleshooting by Error Code SiME341909EA Troubleshooting Diagnosis procedure 2 Infrared floor sensor error (Error code CE-02) Is the connection of the connector on infrared floor Connect the connector correctly. sensor PCB (A2P) and the connector X81A on A1P normal? Is the connection of the Connect the connector correctly.
Page 195 SiME341909EA Troubleshooting by Error Code Troubleshooting Diagnosis procedure 3 Infrared floor sensor error (Error code CE-03) Is the connection of the connector on infrared floor Connect the connector correctly. sensor PCB (A2P) and the connector X81A on A1P normal? Is the connection of the Connect the connector correctly.
Page 196 Troubleshooting by Error Code SiME341909EA Troubleshooting Diagnosis procedure 4 Infrared floor sensor error (Error code CE-04) Is the connection of the connector on infrared floor Connect the connector correctly. sensor PCB (A2P) and the connector X81A on A1P normal? Is the connection of the Connect the connector correctly.
Page 197: Remote Controller Thermistor Abnormality
SiME341909EA Troubleshooting by Error Code 5.21 Remote Controller Thermistor Abnormality Applicable All indoor unit models Models Error Code Method of Error Error detection is carried out by the temperature detected by the remote controller thermistor. Detection Error Decision When the remote controller thermistor becomes disconnected or shorted while the unit is Conditions running.
Page 198: Outdoor Unit Main Pcb Abnormality
Troubleshooting by Error Code SiME341909EA 5.22 Outdoor Unit Main PCB Abnormality Applicable All outdoor unit models Models Error Code Method of Error Abnormality is detected under the communication conditions in the hardware section between Detection the indoor unit and outdoor unit. Error Decision When the communication conditions in the hardware section between the indoor unit and the Conditions...
Page 199: Current Leakage Detection
SiME341909EA Troubleshooting by Error Code 5.23 Current Leakage Detection Applicable All outdoor unit models Models Error Code Sub code: -01 to -03 Method of Error Current leakage is detected in the earth leakage detection circuit. Error is detected on the Detection outdoor unit main PCB.
Page 200: Missing Of Leakage Detection Core
Troubleshooting by Error Code SiME341909EA 5.24 Missing of Leakage Detection Core Applicable All outdoor unit models Models Error Code Sub code: -06 to -08 Method of Error Detect error according to whether or not there is continuity across the connector (X101A). Detection Error Decision When no current flows at the time of turning ON the power supply.
Page 201: Activation Of High Pressure Switch
SiME341909EA Troubleshooting by Error Code 5.25 Activation of High Pressure Switch Applicable All outdoor unit models Models Error Code Method of Error Detect continuity across the high pressure switch in the protection device circuit. Detection Error Decision When part of the protection device circuit opens. Conditions (Reference) Operating pressure of the high pressure switch: ...
Page 202 Troubleshooting by Error Code SiME341909EA CHECK 12 Service Checker Connect the service checker, and then compare the high pressure value measured by the service checker with the voltage measurement of the connector of the pressure sensor (∗1) Are both pressure values the Replace the outdoor unit same? main PCB (A1P).
Page 203: Activation Of Low Pressure Sensor
SiME341909EA Troubleshooting by Error Code 5.26 Activation of Low Pressure Sensor Applicable All outdoor unit models Models Error Code Method of Error Make judgment of pressure detected by the low pressure sensor with the outdoor unit main Detection PCB. Error Decision When low pressure caused a drop while the compressor is in operation: Conditions ...
Page 204: Compressor Motor Lock
Troubleshooting by Error Code SiME341909EA 5.27 Compressor Motor Lock Applicable All outdoor unit models Models Error Code Method of Error Inverter PCB takes the position signal from UVW line connected between the inverter and Detection compressor, and the error is detected when any abnormality is observed in the phase-current waveform.
Page 205 SiME341909EA Troubleshooting by Error Code The insulation resistance of the relevant Replace the compressor. compressor is low RXQ6-12AR: M1C (< 100 kΩ) RXQ14/16AR: M1C, M2C Power OFF The relevant compressor has a wiring disconnection in it. Restart the compressor, and then check for the Quit work.
Page 206: Outdoor Fan Motor Abnormality
Troubleshooting by Error Code SiME341909EA 5.28 Outdoor Fan Motor Abnormality Applicable All outdoor unit models Models Error Code Method of Error  Detect according to the value of current flowing through the inverter PCB (or fan PCB in Detection case of fan motor 2). ...
Page 207 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check in Monitor Mode For the models equipped with 2 fan motors, check the fan motor M1F or M2F applicable to the error code E7 while in monitor mode of the outdoor unit.
Page 208 Troubleshooting by Error Code SiME341909EA CHECK 16 Check for the connector (power supply cable) of the fan motor. Resistance between U, V, W phases of the fan motor power supply cable has lost Replace the relevant fan motor. balance or short circuit is (#2) caused between U, V, W phases.
Page 209: Electronic Expansion Valve Coil Abnormality
SiME341909EA Troubleshooting by Error Code 5.29 Electronic Expansion Valve Coil Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect according to whether or not there is continuity across the electronic expansion valve Detection coils (Y2E, Y4E). Error Decision When no current flows through common (COM+) at the time of turning ON the power supply.
Page 210: Discharge Pipe Temperature Abnormality
Troubleshooting by Error Code SiME341909EA 5.30 Discharge Pipe Temperature Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect according to temperature detected with the discharge pipe or compressor body Detection thermistor. Error Decision  When discharge pipe temperature becomes abnormally high (i.e., 135°C or more) Conditions ...
Page 211 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Connect the Service Checker. Reset the system operation, and then restart it. CHECK 11 Are the characteristics of the discharge pipe and Replace the relevant thermistor.
Page 212: Wet Alarm
Troubleshooting by Error Code SiME341909EA 5.31 Wet Alarm Applicable All outdoor unit models Models Error Code Method of Error In cooling operation, detect the condition under which liquid refrigerant returns to the Detection compressor, according to the temperature and pressure of each part. Error Decision When the following wet state continues for a period of 180 minutes, an alert is issued.
Page 213 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Connect the Service Checker. Mount a pressure gauge on the high pressure service port. Reset the operation, and then restart the operation.
Page 214: Refrigerant Overcharged
Troubleshooting by Error Code SiME341909EA 5.32 Refrigerant Overcharged Applicable All outdoor unit models Models Error Code Method of Error Detect overcharged refrigerant according to outdoor air temperature, heat exchanger liquid pipe Detection temperature, and subcooling heat exchanger liquid pipe temperature during test operation. Error Decision When the amount of refrigerant, which is calculated using outdoor air temperature, heat Conditions...
Page 215: Harness Abnormality (Between Outdoor Unit Main Pcb And Inverter Pcb)
SiME341909EA Troubleshooting by Error Code 5.33 Harness Abnormality (between Outdoor Unit Main PCB and Inverter PCB) Applicable All outdoor unit models Models Error Code Method of Error Check for the transmission conditions of the following harnesses between the PCBs using Detection microcomputer: ...
Page 216: Outdoor Fan Pcb Abnormality
Troubleshooting by Error Code SiME341909EA 5.34 Outdoor Fan PCB Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect according to values detected with current sensor. Detection Error Decision When the current sensor is abnormal. Conditions Supposed ...
Page 217: Thermistor Abnormality
SiME341909EA Troubleshooting by Error Code 5.35 Thermistor Abnormality Applicable All outdoor unit models Models H9, J3, J5, J7, J8, J9 Error Code Method of Error Detect according to temperature detected with individual thermistors. Detection Error Decision When the system is in operation and the thermistor causes wiring disconnection or short circuit Conditions in it.
Page 218 Troubleshooting by Error Code SiME341909EA Note(s) ∗1. Error codes and thermistors RXQ6-12AR RXQ14/16AR Error Applicable Electric Electric Code Thermistor Connector Connector symbol symbol Outdoor air X18A X18A Discharge pipe thermistor R21T R21T (for M1C) Discharge pipe thermistor — R22T X19A (Group X19A (Group (for M2C) connector)
Page 219: High Pressure Sensor Abnormality
SiME341909EA Troubleshooting by Error Code 5.36 High Pressure Sensor Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect according to temperature detected with the high pressure sensor. Detection Error Decision The high pressure sensor is short circuit or open circuit. Conditions (Pressure range: 0-4.3 MPa) Supposed...
Page 220: Low Pressure Sensor Abnormality
Troubleshooting by Error Code SiME341909EA 5.37 Low Pressure Sensor Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect according to temperature detected with the low pressure sensor. Detection Error Decision The low pressure sensor is short circuit or open circuit. Conditions (Pressure range: 0-1.7 MPa) Supposed...
Page 221: Inverter Pcb Abnormality
SiME341909EA Troubleshooting by Error Code 5.38 Inverter PCB Abnormality Applicable All outdoor unit models Models Error Code Method of Error  Detect according to current value detected during the output of waveform before compressor Detection startup  Detect according to current value detected with the current sensor during synchronous operation for startup Error Decision ...
Page 222 Troubleshooting by Error Code SiME341909EA Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn OFF the power supply once, and then turn it ON again. The error could have resulted from Return to normal? external factors other than failures (e.g.
Page 223: Momentary Power Failure During Test Operation
SiME341909EA Troubleshooting by Error Code 5.39 Momentary Power Failure during Test Operation Applicable All outdoor unit models Models Error Code Method of Error Momentary power failure is detected by the PCB. Detection Error Decision Judgment is made by AC power frequency detection circuit on the outdoor unit main PCB Conditions Supposed ...
Page 224: Inverter Radiation Fin Temperature Rise Abnormality
Troubleshooting by Error Code SiME341909EA 5.40 Inverter Radiation Fin Temperature Rise Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect temperature of power module of the inverter PCB and fan PCB. Detection Error Decision Thermistor located inside the power module of the inverter PCB for compressor and fan motor. Conditions Cooling tube plate poor heat-exchange.
Page 225 SiME341909EA Troubleshooting by Error Code  Subcode L4-06, 07, 18, 19, 20, 21 Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the cooling conditions of the inverter heat sink. (1) Is the insulation sheet (blue) properly fixed? (2) Is the heat sink properly...
Page 226: Compressor Instantaneous Overcurrent
Troubleshooting by Error Code SiME341909EA 5.41 Compressor Instantaneous Overcurrent Applicable All outdoor unit models Models Error Code Method of Error Detect current flowing through the power transistor. Detection Error Decision The current instantaneously exceeds A (A) in the power transistor. Conditions Trigger point Compressor model...
Page 227 SiME341909EA Troubleshooting by Error Code Power OFF insulation resistance of the relevant Replace the compressor is 100 kΩ compressor.(1) or less. 1 RXQ6-12AR: M1C RXQ14/16AR: M1C, M2C The coil of the relevant compressor has caused Replace the wiring disconnection compressor.(1) in it.
Page 228: Compressor Overcurrent
Troubleshooting by Error Code SiME341909EA 5.42 Compressor Overcurrent Applicable All outdoor unit models Models Error Code Method of Error Detect current flowing through the power transistor. Detection Error Decision (1) The secondary-side inverter current exceeds A (A) for a period of 5 consecutive seconds. Conditions (2) The secondary-side inverter current exceeds B (A) for a period of 260 consecutive seconds.
Page 229 SiME341909EA Troubleshooting by Error Code Power OFF insulation resistance of the Replace the compressor. relevant compressor is (#1) 1 MΩ or less to ground. RXQ6-12AR: M1C RXQ14/16AR: M1C, M2C The coil of the relevant compressor has caused Replace the wiring disconnection compressor.
Page 230: Compressor Startup Abnormality
Troubleshooting by Error Code SiME341909EA 5.43 Compressor Startup Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect error according to the signal waveform of compressor. Detection Error Decision When compressor startup operation has not been completed. Conditions Supposed ...
Page 231 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Startup for the first time after A Go to the next page installation? Is a proper amount of refrigerant Charge a proper amount of charged?
Page 232 Troubleshooting by Error Code SiME341909EA Refrigerant is stagnated. (The unit is Solve the refrigerant stagnation. out of power supply for (Power should be supplied for more more than 6 than 6 hours.) hours.) Is the insulation resistance of the Replace the compressor.(#1) relevant compressor 100 kΩ...
Page 233: Transmission Error Between Inverter Pcb And Outdoor Unit Main Pcb
SiME341909EA Troubleshooting by Error Code 5.44 Transmission Error between Inverter PCB and Outdoor Unit Main PCB Applicable All outdoor unit models Models Error Code Method of Error Check for the transmission conditions between the inverter PCB and the outdoor unit main PCB Detection using a microcomputer.
Page 234 Troubleshooting by Error Code SiME341909EA Check in Monitor Mode For the models equipped with 2 compressors, check the compressor M1C or M2C applicable to the error code LC while in monitor mode of the outdoor unit. Does the relevant inverter PCB part No. Replace with a proper PCB.
Page 235: Power Supply Voltage Imbalance
SiME341909EA Troubleshooting by Error Code 5.45 Power Supply Voltage Imbalance Applicable All outdoor unit models Models Error Code Method of Error Detect voltage imbalance through inverter PCB. Detection Error Decision Power supply voltage imbalance exceeds approximately 12 V. Conditions Error is not decided while the unit operation is continued. P1 will be displayed by pressing the inspection button.
Page 236 ∗ Use the document “Notice of Inspection Results” attached to spare part. Explanation to users Be sure to explain user that “power supply Hand the “Notice of Inspection Results” to user to ask voltage imbalance” will occur and Daikin him/her to rectify the imbalance. accepts no responsibility for the imbalance. Note(s) ∗1.
Page 237: Reactor Temperature Abnormality
SiME341909EA Troubleshooting by Error Code 5.46 Reactor Temperature Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect according to the value detected with the reactor surface thermistor. Detection Error Decision When the system is in operation and the thermistor causes wiring disconnection or short circuit Conditions in it.
Page 238: Inverter Radiation Fin Temperature Abnormality
Troubleshooting by Error Code SiME341909EA 5.47 Inverter Radiation Fin Temperature Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect the resistance of the following thermistors during the compressor stops running: Detection (1) Radiation fin thermistor (2) Thermistor located in PCB circuit Error Decision When the resistance of the thermistor comes to a value equivalent to open or short circuit.
Page 239 SiME341909EA Troubleshooting by Error Code Troubleshooting  Subcode P4-01, 04, 05, 06, 07, 08 Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check in Monitor Mode For the models equipped with 2 compressors, check the compressor M1C or M2C applicable to the error code...
Page 240: Field Setting After Replacing Outdoor Unit Main Pcb Abnormality Or Combination Of Pcb Abnormality
Troubleshooting by Error Code SiME341909EA 5.48 Field Setting after Replacing Outdoor Unit Main PCB Abnormality or Combination of PCB Abnormality Applicable All outdoor unit models Models Error Code Method of Error This error is detected according to communications with the inverter PCB. Detection Error Decision Make judgment according to communication data on whether or not the type of the inverter PCB...
Page 241: Refrigerant Shortage Warning
SiME341909EA Troubleshooting by Error Code 5.49 Refrigerant Shortage Warning Applicable All outdoor unit models Models Error Code Sub code: 05 Method of Error Detects refrigerant shortage according to the ending conditions of cooling oil return control. Detection Error Decision Cooling oil return control does not finish according to the ending conditions, and the time is Conditions up for 3 consecutive times.
Page 242: Open Phase
Troubleshooting by Error Code SiME341909EA 5.50 Open Phase Applicable All outdoor unit models Models Error Code Method of Error The phase of each phase is detected by phase detection circuit and open phase is judged. Detection Error Decision When any phase is open phase. Conditions Supposed ...
Page 243: Power Supply Insufficient Or Instantaneous Abnormality
SiME341909EA Troubleshooting by Error Code 5.51 Power Supply Insufficient or Instantaneous Abnormality Applicable All outdoor unit models Models Error Code Method of Error Detect the voltage of capacitor of the main circuit in the inverter PCB. Detection Error Decision When the voltage in the DC circuit (between diode module and power module) falls below Conditions 380 VDC.
Page 244 Troubleshooting by Error Code SiME341909EA The insulation resistance of the fan Replace the fan motor. motor is not more If the motor gets severely than 1 MΩ. damaged, the inverter PCB (#1) should also be replaced. RXQ6/8AR: A4P RXQ10-16AR: A4P, A7P CHECK 4 Is the power Replace the inverter PCB.
Page 245: Check Operation Not Executed
SiME341909EA Troubleshooting by Error Code 5.52 Check Operation Not Executed Applicable All outdoor unit models Models Error Code Method of Error The check operation has not been executed. Detection Error Decision Error is decided when the unit starts operation without check operation. Conditions Supposed ...
Page 246: Transmission Error Between Indoor Units And Outdoor Units
Troubleshooting by Error Code SiME341909EA 5.53 Transmission Error between Indoor Units and Outdoor Units Applicable All indoor unit models All outdoor unit models Models Error Code Method of Error Microcomputer checks if transmission between indoor and outdoor units is normal. Detection Error Decision Transmission is not carried out normally for a certain amount of time.
Page 247 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check for details of error in monitor mode. U4-01 Go to the next page. U4-03 (Indoor unit system transmission error) Has the...
Page 248 Troubleshooting by Error Code SiME341909EA U4-03 Indication after launch test Check controller indoor units: operation? (1) Some error about thermistor, or fan motor, electronic expansion valve, or defective PCB. (2) Test operation was interrupted by the MODE Operate all indoor units. (BS1) button.
Page 249: Transmission Error Between Remote Controller And Indoor Unit
SiME341909EA Troubleshooting by Error Code 5.54 Transmission Error between Remote Controller and Indoor Unit Applicable All indoor unit models Models Error code Method of Error Microcomputer checks if transmission between indoor unit and remote controller is normal. Detection Error Decision When transmission is not carried out normally for a certain amount of time.
Page 250: Transmission Error Between Outdoor Units
Troubleshooting by Error Code SiME341909EA 5.55 Transmission Error between Outdoor Units Applicable All outdoor unit models Models Error Code Method of Error Microcomputer checks if transmission between outdoor units is normal. Detection Error Decision When transmission is not carried out normally for a certain amount of time Conditions Supposed ...
Page 251 SiME341909EA Troubleshooting by Error Code Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Ensure the sub code or the lamp display of monitor mode, and then go to the following: U7-01 Error code Sub code...
Page 252 Troubleshooting by Error Code SiME341909EA Diagnosis Flowchart-1 U7-01 Error code Sub code (Transmission error when the external control adaptor is mounted) there any wiring disconnection or wiring error in the transmission Modify the transmission wirings wirings to the external to the external control adaptor for control adaptor for outdoor unit.
Page 253 SiME341909EA Troubleshooting by Error Code Diagnosis Flowchart-3 U7-03 Error code Sub code (Transmission error between master and slave 1) multi transmission wirings to multi slave 1 have Replace the outdoor unit main caused wiring disconnection in them or are being PCB (A1P) for multi slave 1.
Page 254 Troubleshooting by Error Code SiME341909EA Diagnosis Flowchart-6 U7-06 Error code Sub code (Manual address setting error for slave 1, 2) One of outdoor unit multi transmission wirings has Replace the outdoor unit main caused wiring disconnection in it PCB (A1P). or been disconnected.
Page 255: Transmission Error Between Main And Sub Remote Controllers
SiME341909EA Troubleshooting by Error Code 5.56 Transmission Error between Main and Sub Remote Controllers Applicable All indoor unit models Models Error code Method of Error In case of controlling with 2 remote controllers, check the system using microcomputer if signal Detection transmission between indoor unit and remote controller (main and sub remote controller) is normal.
Page 256: Other Indoor Units And Outdoor Unit Abnormality
Troubleshooting by Error Code SiME341909EA 5.57 Other Indoor Units and Outdoor Unit Abnormality Applicable All indoor unit models Models All outdoor unit models Error Code Method of Error Detect the error signal for the other indoor unit within the circuit by outdoor unit main PCB. Detection Error Decision The error decision is made on any other indoor units within the system concerned.
Page 257: Improper Combination Of Indoor Unit And Outdoor Unit, Indoor Unit And Remote Controller
SiME341909EA Troubleshooting by Error Code 5.58 Improper Combination of Indoor Unit and Outdoor Unit, Indoor Unit and Remote Controller Applicable All indoor unit models All outdoor unit models Models Error Code Method of Error A difference occurs in data by the type of refrigerant between indoor and outdoor units. Detection The number of indoor units connected is out of the allowable range.
Page 258 Troubleshooting by Error Code SiME341909EA Diagnosis Flowchart-1 UA-17 Error code Sub code number of indoor units connected to the Replace the outdoor unit main same system is not PCB (A1P). more than 64. Excess indoor units are connected. Diagnosis Flowchart-2 Check for the connection to connect the proper number of UA-18...
Page 259 SiME341909EA Troubleshooting by Error Code Diagnosis Flowchart-4 UA-21 Error code Sub code Replace the outdoor unit main PCB (A1P). Diagnosis Flowchart-5 UA-31 Error code Sub code Is the multi combination of Correct the multi combination of outdoor units outdoor units. proper? Was the outdoor unit main...
Page 260: Address Duplication Of Centralized Controller
Troubleshooting by Error Code SiME341909EA 5.59 Address Duplication of Centralized Controller Applicable All indoor unit models Models Centralized controller Error Code Method of Error The principal indoor unit detects the same address as that of its own on any other indoor unit. Detection Error Decision The error decision is made as soon as the abnormality aforementioned is detected.
Page 261: Transmission Error Between Centralized Controller And Indoor Unit
SiME341909EA Troubleshooting by Error Code 5.60 Transmission Error between Centralized Controller and Indoor Unit Applicable All indoor unit models Schedule timer Models Central remote controller Error Code Method of Error Microcomputer checks if transmission between indoor unit and centralized controller is normal. Detection Error Decision Transmission is not carried out normally for a certain amount of time...
Page 262 Troubleshooting by Error Code SiME341909EA Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the indoor unit for which UE is displayed. Is Go to the next page the transmission error UE caused on all indoor...
Page 263 SiME341909EA Troubleshooting by Error Code Check the transmission wiring between centralized controller for any broken wire. For details, refer to information in the Correct the wiring. “Procedure for checking broken wires” section. CHECK 15 Check the transmission wiring between main centralized controller for any broken wire.
Page 264: System Not Set Yet
Troubleshooting by Error Code SiME341909EA 5.61 System Not Set Yet Applicable All indoor unit models Models All outdoor unit models Error Code Method of Error On check operation, the number of indoor units in terms of transmission is not corresponding to Detection that of indoor units that have made changes in temperature.
Page 265: System Abnormality, Refrigerant System Address Undefined
SiME341909EA Troubleshooting by Error Code 5.62 System Abnormality, Refrigerant System Address Undefined Applicable All indoor unit models All outdoor unit models Models Error Code Method of Error Detect an indoor unit with no auto address setting. Detection Error Decision The error decision is made as soon as the abnormality aforementioned is detected. Conditions Supposed ...
Page 266 Troubleshooting by Error Code SiME341909EA Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Does electricity an error being introduced occur even after for the first time after 12 minutes elapses installation or after an indoor from the time when electricity Normal...
Page 267: Check
SiME341909EA Check 6. Check High Pressure Check CHECK 1 Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points. ←Check to be sure the stop valve is open. Stop valve closed Local High pipe ←Conduct visual checks for pipe conditions. Bent or crushed pipe pressure resistance...
Page 268: Low Pressure Check
Check SiME341909EA Low Pressure Check CHECK 2 Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points. ←Is the pressure value checked with the Service Checker Defective low pressure sensor Defective corresponding to the measurement of the pressure sensor? compressor Defective ←Are the voltage characteristics normal?
Page 269: Superheat Operation Check
SiME341909EA Check Superheat Operation Check CHECK 3 Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Defective hot Defective solenoid gas bypass m Check if coil resistance and insulation valve coil control are normal.
Page 270: Power Transistor Check
Check SiME341909EA Power Transistor Check CHECK 4 Perform the following procedures prior to check. (1) Power OFF. (2) Remove all the wiring connected to the PCB where power transistors are mounted on. ∗ Prepare the analog type of multimeter. Preparation Multimeter For the digital type of multimeter, those with diode check function are available for the...
Page 271 SiME341909EA Check PCB and Circuit Diagram IGBT X10A X11A Since the appearance of PCB shown in this outline drawing is different from the actual appearance, use it as a reference drawing. Part 6 Service Diagnosis...
Page 272: Refrigerant Overcharge Check
Check SiME341909EA Refrigerant Overcharge Check CHECK 6 In case of VRV systems, the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgment, refer to the information below. Diagnosis of refrigerant overcharge 1.
Page 273: Refrigerant Shortage Check
SiME341909EA Check Refrigerant Shortage Check CHECK 7 In case of VRV systems, the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgment, refer to the information below. Diagnosis of refrigerant shortage 1.
Page 274: Vacuuming And Dehydration Procedure
Check SiME341909EA Vacuuming and Dehydration Procedure CHECK 8 Conduct vacuuming and dehydration in the piping system following the procedure for Normal vacuuming and dehydration described below. Furthermore, if moisture may get mixed in the piping system, follow the procedure for Special vacuuming and dehydration described below.
Page 275: Thermistor Check
SiME341909EA Check Thermistor Check CHECK 11 Thermistor type of indoor units Model Indoor heat exchanger Indoor heat exchanger Suction air thermistor (liquid) thermistor (gas) thermistor FXFSQ-AR Type C Type A FXDQ-PD FXDQ-ND Type A FXMQ-PB Type B Type J FXMQ-AR FXAQ-AR Thermistor type of outdoor units Thermistor...
Page 276 Check SiME341909EA Thermistor Resistance (kΩ) temperature Type A Type B Type C (°C) –30 363.8 361.7719 – –25 266.8 265.4704 – –20 197.8 196.9198 – –15 148.2 147.5687 – –10 112.0 111.6578 111.8 –5 85.52 85.2610 85.42 65.84 65.6705 65.80 51.05 50.9947 51.07...
Page 277 SiME341909EA Check Thermistor Resistance (kΩ) temperature Type E Type H Type J (°C) –30 357.9 3407 352.1 –25 263.5 2540 261.2 –20 196.1 1910 195.4 –15 147.4 1449 147.3 –10 111.8 1108 111.8 –5 85.53 853.8 85.49 66.00 662.7 65.80 51.31 517.9 51.15...
Page 278: Pressure Sensor Check
Check SiME341909EA Pressure Sensor Check CHECK 12 Pressure Sensor and Voltage Characteristics 4.15 4.15 Detected Pressure (MPa) = × V – × 0.5 (kg/cm )(MPa) (MPa) = × V – × 0.5 51.0 5.0 : High pressure (MPa) 45.9 : Low pressure (MPa) High Pressure (P : Output Voltage (High Side) (VDC) 40.8...
Page 279: Broken Wire Check Of The Relay Wires
SiME341909EA Check 6.10 Broken Wire Check of the Relay Wires CHECK 15 1. Procedure for checking outdoor-outdoor unit transmission wiring for broken wires On the system shown below, turn OFF the power supply to all equipment, short circuit between the outdoor-outdoor unit terminal F1 and F2 in the "Outdoor Unit A" that is farthest from the central remote controller, and then conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the central remote controller using a multimeter.
Page 280 Check SiME341909EA 2. Procedure for checking indoor-outdoor unit transmission wiring for broken wires (for checking the indoor-outdoor unit transmission wiring of the "Outdoor Unit C" for broken wires) Turn OFF the power supply to all equipment, short circuit between the indoor-outdoor unit terminal F1 and F2 in the "Outdoor Unit C", and then conduct continuity checks between the transmission wirings F1 and F2 of the "Indoor Unit a"...
Page 281: Fan Motor Connector Check (Power Supply Cable)
SiME341909EA Check 6.11 Fan Motor Connector Check (Power Supply Cable) CHECK 16 Check the fan motor connector according to the following procedure. Outdoor unit 1. Turn OFF the power supply. 2. Measure the resistance between phases of U, V, W at the motor side connectors (3-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.
Page 282 Check SiME341909EA FXDQ-PD, FXDQ-ND 1. Turn OFF the power supply. 2. Measure the resistance between phases of U, V, W at the motor side connectors (3-core wire) to check that the values are according to the judgment criteria and there is no short circuiting, while connector or relay connector is disconnected.
Page 283: Fan Motor Connector Check (Signal Cable)
SiME341909EA Check 6.12 Fan Motor Connector Check (Signal Cable) CHECK 17 Resistance measuring points and judgment criteria. FXMQ40PB, FXAQ-AR White (1) Orange (2) Brown (3) Blue (4) — (5) — — (6) — Red (7) Measuring points Judgment criteria 1 Ω or more 1 Ω...
Page 284: Electronic Expansion Valve Coil Check
Check SiME341909EA 6.13 Electronic Expansion Valve Coil Check CHECK 18 Remove the connector for electronic expansion valve from PCB. Measure the resistance value between pins and check the continuity to judge the condition. The normal products will show the following conditions. Outdoor unit RXQ6/8AR X22A (Y2E)
Page 285 SiME341909EA Check Indoor unit FXFSQ-AR, FXMQ-PB Orange (1) φ1 Gray (6) φ3 Yellow (3) φ2 φ4 Red (2) Black (4) Orange (1) Red (2) Yellow (3) Black (4) — (5) Gray (6) Measuring points Judgment criteria No continuity 92 Ω 46 Ω 92 Ω...
Page 286 Check SiME341909EA FXMQ-AR White (1) φ1 Red (6) φ3 Orange (3) φ2 φ4 Yellow Blue Blue — Orange Yellow Red White Measuring points Judgment criteria No continuity 300 Ω 150 Ω 300 Ω 150 Ω FXAQ-AR White (1) φ1 Red (5) φ3 Orange (3) φ2...
Page 287 SiME341909EA Part 7 Appendix 1. Wiring Diagrams..................282 1.1 Outdoor Unit ..................282 1.2 Indoor Unit....................285 Part 7 Appendix...
Page 288 Wiring Diagrams SiME341909EA 1. Wiring Diagrams Outdoor Unit RXQ6/8ARYFK 3D124186A Part 7 Appendix...
Page 289 SiME341909EA Wiring Diagrams RXQ10/12ARYFK Part 7 Appendix...
Page 290 Wiring Diagrams SiME341909EA RXQ14/16ARYFK Part 7 Appendix...
Page 291 SiME341909EA Wiring Diagrams Indoor Unit 1.2.1 Ceiling Mounted Cassette (Round Flow with Sensing) Type FXFSQ25/32/40/50/63/80/100/125/140ARV1 Part 7 Appendix...
Page 292 Wiring Diagrams SiME341909EA BYCQ125EASF (Auto Grille Panel for FXFSQ-AR) Part 7 Appendix...
Page 293 SiME341909EA Wiring Diagrams 1.2.2 Slim Ceiling Mounted Duct Type (Standard Series) FXDQ20/25/32PDVM, FXDQ40/50/63NDVM Part 7 Appendix...
Page 294 Wiring Diagrams SiME341909EA 1.2.3 Ceiling Mounted Duct Type FXMQ40/50/63/80/100/125/140PBV1 Part 7 Appendix...
Page 295 SiME341909EA Wiring Diagrams FXMQ40/50/63/80/100ARV1 Part 7 Appendix...
Page 296 Wiring Diagrams SiME341909EA 1.2.4 Wall Mounted Type FXAQ20/25/32/40/50/63ARVM Part 7 Appendix...
Page 297 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. z Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

Daikin VRV X RXQ6-48ANR Series Service Manual

Part 1 General Information

Refrigerant Circuit Part 2

Part 3 Remote Controller

Part 4 Functions and Control

Part 5 Field Settings and Test Operation

Part 6 Service Diagnosis

Quick Links

Chapters

Troubleshooting

Related Manuals for Daikin VRV X RXQ6-48ANR Series

Summary of Contents for Daikin VRV X RXQ6-48ANR Series