Daikin SkyAir RZF-A Series Service Manual
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Daikin SkyAir RZF-A Series Service Manual

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SiME281906E
Service
Manual
RZF-A Series
Cooling Only 50/60 Hz

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Summary of Contents for Daikin SkyAir RZF-A Series

  • Page 1 SiME281906E Service Manual RZF-A Series Cooling Only 50/60 Hz...

  • Page 2: Table Of Contents

    SiME281906E 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.........8 2. Icons Used ....................10 3. Revision History ..................11 Part 1 General Information ............12 1. Model Names and Power Supply............13 2.
  • Page 3 SiME281906E 2. Operation Flowchart................50 2.1 Cooling/Dry Operation................50 3. Indoor Unit Functions ................51 3.1 Set Temperature and Control Target Temperature........51 3.2 Thermostat Control.................51 3.3 Automatic Airflow Rate Control ..............52 3.4 Drain Pump Control................52 3.5 Freeze-Up Prevention Control..............52 3.6 Automatic Restart...................53 3.7 Monitoring Control ..................53 4.
  • Page 4 SiME281906E 3.4 Setting Mode (Mode 2)................87 4. Emergency Operation ................89 4.1 Forced Operation ...................90 4.2 Emergency Operation when the Remote Controller is Lost ....91 5. Test Operation ..................92 5.1 Checks before Test Operation ...............92 5.2 Test Operation..................92 Part 6 Service Diagnosis .............. 94 1.
  • Page 5 SiME281906E 5.18 Outdoor Fan Motor Abnormality ............147 5.19 Electronic Expansion Valve Abnormality..........150 5.20 Discharge Pipe Temperature Abnormality ...........153 5.21 High Pressure Switch System Abnormality ..........155 5.22 Compressor Self-Operating Thermal Protector........156 5.23 Thermistor System Abnormality ............157 5.24 Outdoor Unit PCB Abnormality.............158 5.25 Radiation Fin Temperature Rise ............161 5.26 DC Output Overcurrent ................162 5.27 Compressor Overcurrent..............164...

  • Page 6: Introduction

    SiME281906E Introduction 1. Safety Cautions..................2 1.1 Warnings and Cautions Regarding Safety of Workers......2 1.2 Warnings and Cautions Regarding Safety of Users.........8 2. Icons Used ....................10 3. Revision History ..................11 Introduction...

  • Page 7: Safety Cautions

    SiME281906E Safety Cautions 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 8 Safety Cautions SiME281906E 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 9 SiME281906E Safety Cautions  Checking the area Before beginning work, conduct safety checks to minimise the risk of ignition. When repairing the refrigerating system, take the following precautions before work.  Work procedure Work shall be conducted under a controlled procedure so as to minimise the risk of working in the presence of R-32 or vapour.
  • Page 10 Safety Cautions SiME281906E  Checking electrical devices Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. In case there is any fault that could endanger safety, no electrical supply shall be connected to the circuit until the fault is satisfactorily dealt with. Initial safety checks shall include: ...
  • Page 11 SiME281906E Safety Cautions  Leak detection methods The following leak detection methods can be applied for systems containing R-32. Electronic leak detectors shall be used to detect R-32, but the sensitivity may not be adequate or may need re-calibration (detection equipment shall be calibrated in a refrigerant-free area).
  • Page 12 Safety Cautions SiME281906E  Decommissioning Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its details. It is recommended to train technicians so that all of the refrigerant is recovered safely. In case analysis is required before re-using the reclaimed refrigerant, an oil and refrigerant sample shall be taken before proceeding with decommissioning.

  • Page 13: Warnings And Cautions Regarding Safety Of Users

    SiME281906E Safety Cautions 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 14 Safety Cautions SiME281906E 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 15: Icons Used

    SiME281906E Icons Used 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 16: Revision History

    Revision History SiME281906E 3. Revision History Month / Year Version Revised contents 10 / 2019 SiME281906E First edition Introduction...

  • Page 17: Part 1 General Information

    SiME281906E Part 1 General Information 1. Model Names and Power Supply............13 2. External Appearance................14 3. Functions....................15 4. Specifications ..................16 Part 1 General Information...

  • Page 18: Model Names And Power Supply

    Model Names and Power Supply SiME281906E 1. Model Names and Power Supply Indoor unit Outdoor unit Power supply intake Type Model name Model name Middle and high static FDMF18AVMK RZF18AVMK Outdoor unit: pressure duct connection 1 phase, 220-240 V, 50/60 Hz FDMF24AVMK RZF24AVMK type...

  • Page 19: External Appearance

    SiME281906E External Appearance 2. External Appearance Indoor unit FDMF-A Outdoor unit RZF18AVMK RZF30AVMK RZF24AVMK RZF36AVMK Part 1 General Information...

  • Page 20: Functions

    (1) h (1) The controller BRC1H81 series can also be available. BRC1H81 series only allows for basic settings and operation. Advanced settings and operation are performed via the Daikin Control Assistant app. Note(s) : Available — : Not available 1...

  • Page 21: Specifications

    SiME281906E Specifications 4. Specifications Model Indoor unit FDMF18AVMK FDMF24AVMK Outdoor unit RZF18AVMK RZF24AVMK Power supply Indoor unit 1 phase, 220-240 V, 50/60 Hz 1 phase, 220-240 V, 50/60 Hz Outdoor unit 1 phase, 220-240 V, 50/60 Hz 1 phase, 220-240 V, 50/60 Hz Power supply intake Indoor/Outdoor unit side Indoor/Outdoor unit side...
  • Page 22 Specifications SiME281906E Model Indoor unit FDMF30AVMK FDMF36AVMK Outdoor unit RZF30AVMK RZF36AVMK Power supply Indoor unit 1 phase, 220-240 V, 50/60 Hz 1 phase, 220-240 V, 50/60 Hz Outdoor unit 1 phase, 220-240 V, 50/60 Hz 1 phase, 220-240 V, 50/60 Hz Power supply intake Indoor/Outdoor unit side Indoor/Outdoor unit side...

  • Page 23: Part 2 Refrigerant Circuit

    SiME281906E Part 2 Refrigerant Circuit 1. Refrigerant Circuit (Piping Diagrams) ...........19 1.1 18/24 Class ....................19 1.2 30/36 Class ....................21 2. Functional Parts Layout ................23 2.1 18/24 Class ....................23 2.2 30/36 Class ....................24 Part 2 Refrigerant Circuit...

  • Page 24: Refrigerant Circuit (Piping Diagrams)

    Refrigerant Circuit (Piping Diagrams) SiME281906E 1. Refrigerant Circuit (Piping Diagrams) 18/24 Class No. in Electric Unit piping Name Function symbol diagram Suction air thermistor Thermostat control, General frequency control Indoor heat exchanger liquid Compressor frequency control (Target Te), Freeze-up control pipe thermistor Indoor unit...
  • Page 25 SiME281906E Refrigerant Circuit (Piping Diagrams)  Piping diagram: Outdoor unit (10) (5) Y1E (11) S1PH (4) M1C C: 4D113227B Part 2 Refrigerant Circuit...

  • Page 26: 30/36 Class

    Refrigerant Circuit (Piping Diagrams) SiME281906E 30/36 Class No. in Electric Unit piping Name Function symbol diagram Suction air thermistor Thermostat control, General frequency control Indoor heat exchanger liquid Compressor frequency control (Target Te), Freeze-up control pipe thermistor Indoor unit Indoor heat exchanger middle thermistor —...
  • Page 27 SiME281906E Refrigerant Circuit (Piping Diagrams)  Piping diagram: Outdoor unit (11) (5) Y1E (10) (12) S1PH (4) M1C C: 3D111939B Part 2 Refrigerant Circuit...

  • Page 28: Functional Parts Layout

    Functional Parts Layout SiME281906E 2. Functional Parts Layout 18/24 Class Front view Thermistor (Suction pipe) (R3T) Thermistor (Discharge pipe) (R2T) Electronic expansion valve (Y1E) High pressure switch (S1PH) Inverter fan (M1F) Compressor (M1C) C: 1P578063A Back view Thermistor (Outdoor air) (R1T) Thermistor (Outdoor heat exchanger middle)

  • Page 29: 30/36 Class

    SiME281906E Functional Parts Layout 30/36 Class Front view Inverter fan (M1F) Compressor (M1C) C: 1P578367A C: 1P578290A Back view Thermistor (Outdoor heat exchanger middle) (R5T) Thermistor (Outdoor air) Thermistor (Suction pipe) (R1T) (R3T) High pressure switch (S1PH) Thermistor (Discharge pipe) (R2T) Electronic expansion valve...

  • Page 30: Part 3 Remote Controller

    SiME281906E Part 3 Remote Controller 1. Applicable Models .................26 1.1 Wired Remote Controller................26 1.2 Wireless Remote Controller ..............26 2. Names and Functions ................27 2.1 BRC1E62 ....................27 2.2 BRC1E63 ....................29 2.3 BRC1H81 Series ..................31 2.4 BRC4C Series ..................33 3. Main/Sub Setting...................34 3.1 Wired Remote Controller (BRC1E62, BRC1E63) ........34 3.2 Wired Remote Controller (BRC1H81 Series) .........35 3.3 When Wireless Remote Controller is Used Together......36...

  • Page 31: Applicable Models

    SiME281906E Applicable Models 1. Applicable Models Wired Remote Controller Type Model name External appearance BRC1E62 BRC1E63 BRC1E62 BRC1E63 FDMF-A BRC1H81W BRC1H81K BRC1H81S Wireless Remote Controller External appearance Type Model name Wireless remote controller Signal receiver unit FDMF-A BRC4C66 Part 3 Remote Controller...

  • Page 32: Names And Functions

    Names and Functions SiME281906E 2. Names and Functions BRC1E62 (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 33 SiME281906E 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 34: Brc1E63

    Names and Functions SiME281906E 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 screen per page. Used to indicate the Airflow Rate (Air Volume / Fan Speed) / Airflow Direction (7) Left button...
  • Page 35 SiME281906E 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 36: Brc1H81 Series

    Names and Functions SiME281906E 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 37 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 38: Brc4C Series

    Names and Functions SiME281906E BRC4C Series ON OFF DOWN ON OFF TEMP TIME DOWN RESERVE CANCEL TIMER TEST MODE SWING TEST TEST DISPLAY (SIGNAL TRANSMISSION) FAN SPEED CONTROL BUTTON Press this button to select the fan speed, HIGH or This lights up when a signal is being transmitted. LOW, of your choice.

  • Page 39: Main/Sub Setting

    SiME281906E 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 (BRC1E62, BRC1E63) 3.1.1 Field Settings The designation of the main and sub remote controllers can be swapped.

  • Page 40: Wired Remote Controller (Brc1H81 Series)

    Main/Sub Setting SiME281906E 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 41: When Wireless Remote Controller Is Used Together

    SiME281906E 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 42: Address Setting For Wireless Remote Controller

    Main/Sub Setting SiME281906E 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.) 3.4.1 Setting for Signal Receiver PCB...
  • Page 43 SiME281906E Main/Sub Setting 3.4.2 Setting for BRC4C Series The address for the wireless remote controller is set to 1 at the factory. To change the setting, proceed as follows: 1. Press FILTER SIGN RESET button and INSPECTION/TEST button at the same time for 4 seconds to enter field setting mode.
  • Page 44 Main/Sub Setting SiME281906E 3.4.3 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. Since the setting acceptance is hard to discriminate with such circumstances there are two setting options provided to enable discriminating by a beeping sound according to the operation: “A: Standard”...

  • Page 45: Centralized Control Group No. Setting

    SiME281906E Centralized Control Group No. Setting 4. Centralized Control Group No. Setting BRC1E62, BRC1E63 Group No. Setting (Group) Basic screen is displayed. Press and hold the Press the Cancel Cancel button for 4 button once. seconds or more. Select Group address and then press the Menu/Enter button.

  • Page 46: Brc1H81 Series

    Centralized Control Group No. Setting SiME281906E 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 47: Service Settings Menu, Maintenance Menu

    SiME281906E Service Settings Menu, Maintenance Menu 5. Service Settings Menu, Maintenance Menu BRC1E62, 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 48 Service Settings Menu, Maintenance Menu SiME281906E 5.1.1 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 49 SiME281906E Service Settings Menu, Maintenance Menu 5.1.2 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 50 Service Settings Menu, Maintenance Menu SiME281906E 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) Heat exchanger liquid pipe thermistor (°C) Heat exchanger gas pipe thermistor (°C) Indoor unit address No.

  • Page 51: Brc1H81 Series

    SiME281906E Service Settings Menu, Maintenance Menu BRC1H81 Series 5.2.1 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 52: Part 4 Functions And Control

    SiME281906E Part 4 Functions and Control 1. Function Outline ..................48 1.1 Indoor Unit....................48 1.2 Outdoor Unit ...................49 2. Operation Flowchart................50 2.1 Cooling/Dry Operation................50 3. Indoor Unit Functions ................51 3.1 Set Temperature and Control Target Temperature........51 3.2 Thermostat Control.................51 3.3 Automatic Airflow Rate Control ..............52 3.4 Drain Pump Control................52 3.5 Freeze-Up Prevention Control..............52 3.6 Automatic Restart...................53...

  • Page 53: Function Outline

    SiME281906E Function Outline 1. Function Outline Indoor Unit Input Input FDMF-A Suction air thermistor (R1T) Heat exchanger liquid pipe thermistor (R2T) Heat exchanger middle thermistor (R3T) Indoor unit Float switch Fan rotation speed Emergency operation switch ON/OFF switch Remote Airflow rate control controller Thermistor (Wired remote controller only) Functions and...

  • Page 54: Outdoor Unit

    Function Outline SiME281906E Outdoor Unit Input Input Outdoor air thermistor (R1T) Discharge pipe thermistor (R2T) Suction pipe thermistor (R3T) Heat exchanger thermistor (R4T) Heat exchanger middle thermistor (R5T) Power module thermistor (R7T) (RZF30/36AVMK only) High pressure switch (S1PH) Current transformer Indoor unit signal Setting switch Functions and...

  • Page 55: Operation Flowchart

    SiME281906E Operation Flowchart 2. Operation Flowchart Cooling/Dry Operation Power supply ON Initialize electronic expansion valve Initialize microcomputer Preheating control on standby Remote controller operation judgment Emergency Operation mode judgment Emergency operation Cooling/Dry Cooling/Dry Thermostat ON judgment Startup control Normal control Compressor step control Inverter current protection control Electronic expansion valve control...

  • Page 56: Indoor Unit Functions

    Indoor Unit Functions SiME281906E 3. Indoor Unit Functions Set Temperature and Control Target Temperature The relationship between remote controller set temperature and control target temperature is described below. Temperature 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35°C Remote controller set temperature Cooling Control target temperature...

  • Page 57: Automatic Airflow Rate Control

    SiME281906E Indoor Unit Functions 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 rate is set Automatic airflow rate Cooling The fan tap is determined by the difference between Thermostat ON...

  • Page 58: Automatic Restart

    Indoor Unit Functions SiME281906E Automatic Restart Purpose The purpose of the auto-restart function is to automatically resume the same operating mode as when the unit was operating when the power supply is restored after a power failure. Do not use the "Automatic Restart" function to daily start/stop the unit. Precautions when turning OFF power ...

  • Page 59: Outdoor Unit Control

    SiME281906E Outdoor Unit Control 4. Outdoor Unit Control Overview of Outdoor Unit Controls 4.1.1 Cooling 1 (Control while the compressor is OFF) Compressor OFF Actuator Symbol Thermostat OFF Pressure equalization Restart standby Normal stop standby control prior to startup Compressor Restart standby 0 Hz (1) OFF (1)

  • Page 60: Abnormal Stop

    Outdoor Unit Control SiME281906E 4.1.3 Cooling 3 (Oil return control) Compressor ON Actuator Symbol Oil return control Basic control Protection control Compressor Compressor step control, Oil return control High pressure protection, Discharge pipe temperature, Inverter current protection, Overall current protection, Piping/wiring mismatch detection control Outdoor fan Oil return control...

  • Page 61: Preheating Control On Standby

    SiME281906E Outdoor Unit Control Preheating Control on Standby If the compressor is stopped for long periods of time, warm it up to prevent penetration of refrigerant into the compressor oil. Starting conditions • Compressor stopped • Less than 6 hours since power on •...

  • Page 62: Room Temperature Thermostat Control

    Outdoor Unit Control SiME281906E Room Temperature Thermostat Control The thermostat turns ON or OFF based on the difference between remote controller set temperature and indoor suction temperature.  Thermostat ON conditions: when T  +0.5°C  Thermostat OFF conditions • ΔT ≤ –0.5˚C continuously for 1 minute &...

  • Page 63: Compressor Step Control

    SiME281906E Outdoor Unit Control Compressor Step Control Outline After starting frequency control function has been terminated, the ideal compressor frequency will be determined by compressor step control. The compressor operation frequency is controlled in order to keep a constant evaporating temperature in cooling.

  • Page 64: Outdoor Fan Speed Control

    Outdoor Unit Control SiME281906E Outdoor Fan Speed Control Fan Speed Control The outdoor fan speed will be controlled in function of the actual outdoor air temperature, the condensation pressure, pressure difference between low and high pressure and compression ratio. Fan step table Step RZF18/24AVMK RZF30/36AVMK...

  • Page 65: Low Noise Control

    SiME281906E Outdoor Unit Control 4.10 Low Noise Control A. Setting with remote controller Night-time low noise setting Can be configured using the indoor remote controller field setting mode. By estimating the current time from changes in outdoor temperature, the outdoor fan speed and compressor frequency are automatically controlled for low noise operation during night-time (10 pm to 8 am).

  • Page 66: High Pressure Protection Control

    Outdoor Unit Control SiME281906E 4.12 High Pressure Protection Control In order to prevent abnormal high pressures in the system and hence avoiding activation of the high pressure safety device the below control function will be activated. Flowchart Normal operation Hp ≤ F MPa Hp >...

  • Page 67: Discharge Pipe Temperature Control

    SiME281906E Outdoor Unit Control 4.13 Discharge Pipe Temperature Control Outline The compressor operating frequency will be controlled in order to avoid abnormal high compressor temperatures (see also electronic expansion valve control). Td: Discharge pipe temperature (°C) Flowchart Normal operation •Td < A °C •Upper limit frequency: Td >...

  • Page 68: Capacitor Electrical Discharge Control

    Outdoor Unit Control SiME281906E 4.14 Capacitor Electrical Discharge Control Approximately 1 minute after stopping operation (remote controller stop, abnormal stop, retry-type thermostat OFF causing the compressor or outdoor fan motor to stop) an open-phase waveform will be output for capacitor electrical discharge. After that, the discharge resistor will continue to discharge the capacitor to 0 V.

  • Page 69: Overall Current Protection Control

    SiME281906E Outdoor Unit Control 4.18 Overall Current Protection Control Monitors the overall current and restricts the upper limit compressor operating frequency to prevent circuit breakers from exceeding the rated capacity. Outdoor unit current ≤ upper limit Normal operation current value &...

  • Page 70: Pump Down Operation

    Outdoor Unit Control SiME281906E 4.21 Pump Down Operation Outline Whenever the units need to be moved or removed, perform a pump down operation before disconnecting the field piping. By performing a pump down operation, all of the refrigerant will be collected in the outdoor unit. Procedure Procedure Precautions...

  • Page 71: Simulated Operation Function

    SiME281906E Outdoor Unit Control 4.24 Simulated Operation Function In case of a thermistor error, simulated operation is performed in 2 different ways as shown below even while the error is detected. 1. Operation continues while the error code is displayed on the remote controller. Applicable thermistors ...

  • Page 72: Part 5 Field Settings And Test Operation

    SiME281906E Part 5 Field Settings and Test Operation 1. Field Settings with Remote Controller...........68 1.1 BRC1E62, BRC1E63 ................68 1.2 BRC1H81 Series ..................70 1.3 BRC4C Series ..................71 1.4 List of Field Settings for Indoor Unit ............72 1.5 Details of Field Settings for Indoor Unit..........74 1.6 List of Field Settings for Outdoor Unit ............79 2.

  • Page 73: Field Settings With Remote Controller

    SiME281906E Field Settings with Remote Controller 1. 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 74 Field Settings with Remote Controller SiME281906E 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 75: Brc1H81 Series

    SiME281906E Field Settings with Remote Controller 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 ▪ Define the unit to which the setting will apply by setting a Unit number ▪...

  • Page 76: Brc4C Series

    Field Settings with Remote Controller SiME281906E BRC4C Series UP button Mode No. Field setting mode DOWN button RESERVE button First code No. MODE button Second code No. INSPECTION/TEST button Setting To set the field settings, you have to change:  Mode No. ...

  • Page 77: List Of Field Settings For Indoor Unit

    SiME281906E Field Settings with Remote Controller List of Field Settings for Indoor Unit : Factory setting Mode First Description Second Code No. Page Code Reference (Note 2) Filter cleaning Long life Approx. Approx. — — sign interval filter 2,500 hrs. 1,250 hrs.
  • Page 78 Field Settings with Remote Controller SiME281906E 1.4.1 Applicable Field Settings Setting modes FDMF-A Filter cleaning sign interval Filter type 10 (20) Thermistor selection Filter cleaning sign Setting number of the connected indoor units as simultaneous operation system Simultaneous operation system individual setting 11 (21) Fan ON/OFF at thermostat OFF Airflow adjustment...

  • Page 79: Details Of Field Settings For Indoor Unit

    SiME281906E Field Settings with Remote Controller Details of Field Settings for Indoor Unit 1.5.1 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 80 Field Settings with Remote Controller SiME281906E 1.5.4 Setting Number of the Connected Indoor Units as Simultaneous Operation System When using in simultaneous operation system mode, change the second code No. as shown in table below. When using in simultaneous operation system mode, refer to "simultaneous operation system individual setting"...
  • Page 81 SiME281906E Field Settings with Remote Controller 1.5.7 Airflow Adjustment (AUTO) Make external static pressure setting automatically using automatic airflow adjustment (11 (21)-7), or manually using external static pressure settings (13 (23)-6). The volume of blow-off air is automatically adjusted to the rated quantity. Make settings before performing the test operation of the outdoor unit.
  • Page 82 Field Settings with Remote Controller SiME281906E 1.5.9 Auto Restart after Power Failure Reset : Factory setting Mode First Second Contents Code No. Code No. Disabled 12 (22) 02 Enabled For the air conditioners with no setting for the function, the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned ON again after once turned OFF.
  • Page 83 SiME281906E Field Settings with Remote Controller FDMF36AVMK : Factory setting Mode First Code Second Contents Code No. 05 50 Pa 60 Pa 70 Pa 13 (23) 80 Pa 90 Pa 100 Pa Make sure that 11(21)-7 (Airflow adjustment) is set to 01 (OFF). 1.5.12 Drain Pump and Humidifier Interlock Selection This is used to interlock the humidifier with the drain pump.

  • Page 84: List Of Field Settings For Outdoor Unit

    Field Settings with Remote Controller SiME281906E List of Field Settings for Outdoor Unit : Factory setting Mode First Description Second code No. Reference code page Night-time — Automatic — — — (26) low noise low noise (1) operation activation Start time —...

  • Page 85: Field Settings From Demand Adaptor (For 30/36 Class)

    SiME281906E Field Settings from Demand Adaptor (For 30/36 Class) 2. Field Settings from Demand Adaptor (For 30/36 Class) i-Demand Function Purpose Set a limitation towards the power consumption from the system. (e.g. budget control, limit power consumption during peak moments,..) Setting 1.

  • Page 86: Field Settings From Outdoor Unit Pcb (For 30/36 Class)

    Field Settings from Outdoor Unit PCB (For 30/36 Class) SiME281906E 3. Field Settings from Outdoor Unit PCB (For 30/36 Class) Setting 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).
  • Page 87 SiME281906E Field Settings from Outdoor Unit PCB (For 30/36 Class)  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)

  • Page 88: Normal Mode

    Field Settings from Outdoor Unit PCB (For 30/36 Class) SiME281906E 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...

  • Page 89: Monitor Mode (Mode 1)

    SiME281906E Field Settings from Outdoor Unit PCB (For 30/36 Class) Monitor Mode (Mode 1) In the monitor mode, information can be retrieved about current operation status (normal, oil return), outdoor unit class, errors/retries, and cause of stepping-down operation. 3.3.1 How to Retrieve Data SEG1 SEG2 SEG3 Normal To enter monitor mode, press the...
  • Page 90 Field Settings from Outdoor Unit PCB (For 30/36 Class) SiME281906E 3.3.2 Overview of Monitor Mode (Mode 1) Item Contents Description Display Display (1) Description SEG 1 SEG 2 SEG 3 SEG 1 SEG 2 SEG 3 Display of quiet Constantly operation Low noise level 1 Low noise level 2...
  • Page 91 SiME281906E Field Settings from Outdoor Unit PCB (For 30/36 Class) 3.3.3 Check for Descriptions of Errors Follow the procedure described below. This procedure is different than indicated in previous “Monitor mode”. The error codes for forced stop outdoor are:  4, 5, 6: description of error (outdoor system stopped operation). SEG1 SEG2 SEG3 Normal To enter "monitor mode", press the...

  • Page 92: Setting Mode (Mode 2)

    Field Settings from Outdoor Unit PCB (For 30/36 Class) SiME281906E Setting Mode (Mode 2) Ex.) Setting of Refrigerant Recovery Mode SEG1 SEG2 SEG3 Press and hold the BS1 (MODE) button for 5 seconds or more and set to “Setting mode”. Normal MODE Selection of setting items...
  • Page 93 SiME281906E Field Settings from Outdoor Unit PCB (For 30/36 Class) 3.4.1 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 Demand 2 Used to use a targeted power Level 1 (50%) operation...

  • Page 94: Emergency Operation

    Emergency Operation SiME281906E 4. Emergency Operation Operation in emergency includes the following (1) to (3). Understand the purpose and use the appropriate operation. Operation Thermistor Protection Drain pump Remarks Name Purpose Procedure detection device action Emergency Forced SS1 switch No temperature control operation operation for on the...

  • Page 95: Forced Operation

    SiME281906E Emergency Operation Forced Operation To start forced operation, proceed as follows: Step Action Turn OFF the power supply. Flip the emergency switch (DS1-1) on the indoor unit PCB from NORM (Normal, Factory setting) to EMG (Emergency). Normal Emergency Set the DIP switch (DS1-1) on the outdoor unit PCB to ON. COOL HEAT Set the DIP switch (DS1-2) on the outdoor unit PCB to COOL.

  • Page 96: Emergency Operation When The Remote Controller Is Lost

    Emergency Operation SiME281906E Emergency Operation when the Remote Controller is Lost When the remote controller does not work due to battery failure or is lost, use this switch which is located on the indoor unit. When the remote controller does not work even though the battery low indicator is not lit, contact your dealer.

  • Page 97: Test Operation

    SiME281906E Test Operation 5. Test Operation Checks before Test Operation Before carrying out a test operation, proceed as follows: ITEM TO CHECK Power supply Is the wiring as mentioned on the wiring diagram? wiring Make sure no wiring has been forgotten and that there are no missing phases or reverse phases.
  • Page 98 Test Operation SiME281906E Service Diagnosis At the time of a test operation, when the following error code is displayed on remote control, the fault of installation construction can be considered. Error code Installation error Remedial action E3, E5, U0, L8 A failure of a stop valve to open “Open”...

  • Page 99: Part 6 Service Diagnosis

    SiME281906E Part 6 Service Diagnosis 1. Maintenance Inspection ................96 1.1 Overview ....................96 1.2 Refrigerant Characteristics (R-32)............99 1.3 Refrigerant Recovery Method ..............100 2. Symptom-Based Troubleshooting............102 2.1 All Indoor Units ..................102 2.2 Safety Devices ..................103 2.3 Equipment does not operate..............104 2.4 Indoor fan operates, but compressor does not operate.......106 2.5 Cooling operation starts but stops immediately........107 2.6 After unit shuts down, it cannot be restarted for a while.......108 2.7 Equipment operates but does not provide cooling.
  • Page 100 SiME281906E 5.18 Outdoor Fan Motor Abnormality ............147 5.19 Electronic Expansion Valve Abnormality..........150 5.20 Discharge Pipe Temperature Abnormality ...........153 5.21 High Pressure Switch System Abnormality ..........155 5.22 Compressor Self-Operating Thermal Protector........156 5.23 Thermistor System Abnormality ............157 5.24 Outdoor Unit PCB Abnormality.............158 5.25 Radiation Fin Temperature Rise ............161 5.26 DC Output Overcurrent ................162 5.27 Compressor Overcurrent..............164...

  • Page 101: Maintenance Inspection

    SiME281906E Maintenance Inspection 1. Maintenance Inspection Overview When performing maintenance, you should at least perform the following inspections: Indoor unit Transmission wiring between indoor and outdoor units What about switch capacity? What about cable thickness? To dedicated What about voltage and current? breaker Refrigerant piping Drain piping...
  • Page 102 Maintenance Inspection SiME281906E Correlation of Air Conditioner’s Operation Status and Pressure / Running Current What happens in comparison to normal values is summarized in the table below. (Measured for 15-20 minutes or more after operation starts.) Cooling Air Conditioner Status Running Low Pressure High Pressure...
  • Page 103 SiME281906E Maintenance Inspection Precautions for maintenance Item Attention point Item Attention point Replace the PCB components at Troubleshooting not required; maintenance. Shut down the power automatically recovered in 3 minutes. Inverter supply when replacing the Radiation fin Verifiable by the maintenance mode or drive unit component.

  • Page 104: Refrigerant Characteristics (R-32)

    Maintenance Inspection SiME281906E Refrigerant Characteristics (R-32) 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 –50 –40 –30 –20 –10 Temperature (°C) Absolute Absolute Absolute Absolute Temperature Temperature Temperature Temperature pressure pressure pressure pressure (°C) (°C) (°C) (°C) (MPa) (MPa) (MPa) (MPa) –50...

  • Page 105: Refrigerant Recovery Method

    SiME281906E Maintenance Inspection Refrigerant Recovery Method Make sure to recover the refrigerant when replacing components of the refrigerant system. The procedure for refrigerant recovery is as follows. Note that care must be taken to ensure the temperature does not increase too much during refrigerant recovery for models with a fusible plug.
  • Page 106 Maintenance Inspection SiME281906E RZF18AVMK RZF24AVMK Liquid stop valve service port Gas stop valve service port Refrigerant recovery port RZF30AVMK RZF36AVMK Refrigerant recovery port Gas stop valve service port Liquid stop valve service port Illustration is for 30 class as representative. Part 6 Service Diagnosis...

  • Page 107: Symptom-Based Troubleshooting

    SiME281906E Symptom-Based Troubleshooting 2. Symptom-Based Troubleshooting All Indoor Units Symptom Details of Measures Equipment does not operate. Refer to page 104. Indoor fan operates, but compressor does not operate. Refer to page 106. Cooling operation starts but stops immediately. Refer to page 107. After unit shuts down, it cannot be restarted for a while.

  • Page 108: Safety Devices

    Symptom-Based Troubleshooting SiME281906E Safety Devices 2.2.1 Indoor Unit Model Fuse FDMF-A F1U (3.15 A, 250 V) F2U (5.0 A, 250 V) F4U (6.3 A, 250 V) 2.2.2 Outdoor Unit Model Fuse High pressure switch RZF18/24AVMK F1U (6.3 A, 250 V) S1PH F2U (30 A, 250 V) Open: 4.15...

  • Page 109: Equipment Does Not Operate

    SiME281906E Symptom-Based Troubleshooting Equipment does not operate. Applicable All models Models Supposed  Fuse blown or disorder of contact in operation circuit Causes  Defective operation switch or contact point  Defective high pressure switch  Defective magnetic contactor for fan motor ...
  • Page 110 Symptom-Based Troubleshooting SiME281906E Is the thermostat Normal. Start up operation after 3 changed and reset again? minutes (3-minute standby). Is the operation lamp on Diagnose based on error code on LCD remote controller remote controller. blinking? Is the operation lamp on Diagnose based on error code on indoor unit signal receiving part remote controller.

  • Page 111: Indoor Fan Operates, But Compressor Does Not Operate

    SiME281906E Symptom-Based Troubleshooting Indoor fan operates, but compressor does not operate. Applicable All models Models Supposed  Fuse blown or disorder of contact in operation circuit Causes  Defective suction air thermistor  Defective indoor/outdoor unit PCB  Defective power transistor Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution...

  • Page 112: Cooling Operation Starts But Stops Immediately

    Symptom-Based Troubleshooting SiME281906E Cooling operation starts but stops immediately. Applicable All models Models Supposed  Defective outdoor fan Causes  Defective indoor fan  There is an interfering item in airflow of outdoor unit.  There is an interfering item in airflow of indoor unit. ...

  • Page 113: After Unit Shuts Down, It Cannot Be Restarted For A While

    SiME281906E Symptom-Based Troubleshooting After unit shuts down, it cannot be restarted for a while. Applicable All models Models Supposed  Power voltage or power wire malfunction. Causes  Compressor protection thermostat may act due to the following reasons;  Insufficient compression of compressor ...
  • Page 114 Symptom-Based Troubleshooting SiME281906E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn the operation switch ON and OFF, then wait at ON side. Does the unit start operation after 3 Normal.

  • Page 115: Equipment Operates But Does Not Provide Cooling

    SiME281906E Symptom-Based Troubleshooting Equipment operates but does not provide cooling. Applicable All models Models Supposed  Wrong selection of model Causes  Compressor (secondary side) open phase  Refrigerant shortage  Insufficient airflow in the indoor unit  Increase of high pressure ...
  • Page 116 Symptom-Based Troubleshooting SiME281906E Does indoor unit Check each section. airflow rate decrease? • Soiled heat exchanger • Defective fan motor (Refer to troubleshooting A6.) Is the level of CHECK 2 high pressure higher than normal level? Check each item. • Refrigerant overcharge •...

  • Page 117: Equipment Discharges White Mist

    SiME281906E Symptom-Based Troubleshooting Equipment discharges white mist. Applicable All models Models Supposed  Humid installation site Causes  Installation site is dirty and with dense oil mists.  Soiled heat exchanger  Defective fan motor Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the room Continue the unit temperature higher than set...

  • Page 118: Equipment Produces Loud Noise Or Vibration

    Symptom-Based Troubleshooting SiME281906E Equipment produces loud noise or vibration. Applicable All models Models Supposed  Improper installation Causes  Contacts of fan, piping, casing, etc.  Noise of refrigerant flow  Operating noise of drain discharge equipment  Noise of resin components contracting ...
  • Page 119 SiME281906E Symptom-Based Troubleshooting Is the noise flushing sound from Normal. pressure reducing valve or capillary tube? Continuous slight noise during Normal. The sound is flushing cooling noise of gas (refrigerant) inside air conditioning unit. Sound is generated just after Normal. The noise is a sound operation start or stop.

  • Page 120: Equipment Discharges Dust

    Symptom-Based Troubleshooting SiME281906E 2.10 Equipment discharges dust. Applicable All models Models Supposed  Carpet spread room Causes  Animal hair Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Does the trouble occur at the time of operation start...

  • Page 121: Defrost Lamp On The Receiver For Wireless Remote Controller Is Blinking

    SiME281906E Symptom-Based Troubleshooting 2.11 Defrost lamp on the receiver for wireless remote controller is blinking. Applicable All models Models Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Trouble The unit is checking to confirm generates just after power supply ON.

  • Page 122: Troubleshooting With Led Indications

    Troubleshooting with LED Indications SiME281906E 3. Troubleshooting with LED Indications Indoor Unit Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal) k: LED ON / h: LED OFF / l: LED blinks Service monitor Description HAP (Green) Indoor unit normal ...
  • Page 123 SiME281906E Troubleshooting with LED Indications 3.2.2 RZF30/36AVMK The following diagnosis can be conducted by turning ON the power switch and checking the LED indication on PCB (A1P) of the outdoor unit. k: LED ON / h: LED OFF / l: LED blinks Service monitor Description HAP (Green)
  • Page 124 Troubleshooting with LED Indications SiME281906E Precautions for maintaining the electrical box 1. Be sure to check using a multimeter that the power supply is turned off at a terminal strip before service inspection. 2. Be aware that temperature of switch boxes can be extremely high. 3.

  • Page 125: Troubleshooting With Remote Controller

    SiME281906E Troubleshooting with Remote Controller 4. Troubleshooting with Remote Controller BRC1E62, BRC1E63 The following will be 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 (1) Check if it is error or warning.

  • Page 126: Brc1H81 Series

    Troubleshooting with Remote Controller SiME281906E 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 127: Brc4C Series

    SiME281906E Troubleshooting with Remote Controller BRC4C Series If the unit stops due to an error, the operation indicating LED on the signal receiving part of indoor unit blinks. The error code can be determined by following the procedure described below. (The error code is displayed when an operation error has occurred.
  • Page 128 Troubleshooting with Remote Controller SiME281906E 7. Press MODE button to return to the normal mode. If you do not press any button for 1 minute, the remote controller automatically returns to the normal mode. 2. Change the unit number with Normal mode UP button or DOWN button.

  • Page 129: Troubleshooting By Error Code

    SiME281906E Troubleshooting by Error Code 5. Troubleshooting by Error Code Error Codes and Descriptions Error Code Description Reference Page Error of external protection device Indoor unit PCB abnormality Drain water level system abnormality Indoor fan motor abnormality The fuse is blown. —...

  • Page 130: Error Codes - Sub Codes

    Troubleshooting by Error Code SiME281906E Error Codes - Sub Codes If an error code like the one shown below is displayed when the navigation remote controller is in use, make a detailed diagnosis or a diagnosis of the relevant unit referring to the attached list of detailed error codes.
  • Page 131 SiME281906E Troubleshooting by Error Code 5.2.2 Outdoor Unit Troubleshooting Error code Description of error Diagnosis E7 - 01 Fan motor M1F lock Refer to the E7 flowchart and diagnose the appropriate fan, motor or PCB. Fan motor M1F instantaneous overcurrent E7 - 05 Connector No.: X106A Transmission malfunction between inverters...
  • Page 132 Troubleshooting by Error Code SiME281906E Troubleshooting Error code Description of error Diagnosis Defective wiring Defective transmission including that caused when the power supply turns ON. This error is supposed to have resulted from LC - 01 (1) defective wire connections around the PCB, (2) defective outdoor unit main PCB, or (3) defective fan motor.
  • Page 133 SiME281906E Troubleshooting by Error Code Troubleshooting Error code Description of error Diagnosis Indoor unit combination error The unit has been combined with an incompatible indoor unit. UA - 40 Recheck the connected model. Incorrect wiring There is an error in wire connections for transmission between indoor and outdoor units (judged with the indoor unit).

  • Page 134: Error Of External Protection Device

    Troubleshooting by Error Code SiME281906E Error of External Protection Device Applicable All indoor unit models Models Error Code Method of Error Detect 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 to Conditions external ON/OFF terminal.

  • Page 135: Indoor Unit Pcb Abnormality

    SiME281906E Troubleshooting by Error Code Indoor Unit PCB Abnormality Applicable All indoor unit models Models Error code Method of Error The system checks data from EEPROM. Detection Error Decision The error is generated when the data from the EEPROM is not received correctly. Conditions EEPROM (Electrically Erasable Programmable Read Only Memory): A memory chip that holds its content without power.

  • Page 136: Drain Water Level System Abnormality

    Troubleshooting by Error Code SiME281906E Drain Water Level System Abnormality Applicable All indoor unit models Models Error code Method of Error By float switch OFF detection Detection Error Decision The error is generated when the water level reaches its upper limit and when the float switch Conditions turns OFF.

  • Page 137: Indoor Fan Motor Abnormality

    SiME281906E Troubleshooting by Error Code Indoor Fan Motor Abnormality Applicable All indoor unit models Models A6-10, 11 Error code Method of Error Detection from the current flow on the fan PCB Detection Detection from the rotation speed of the fan motor in operation Detection from the position signal of the fan motor Detection from the current flow on the fan PCB when the fan motor starting operation Error Decision...
  • Page 138 Troubleshooting by Error Code SiME281906E The HAP lamp on the indoor unit control PCB is blinking while the HAP lamp on the fan PCB is not blinking. Turn OFF the power supply and Turn OFF the power supply and wait for 10 minutes. wait for 10 minutes.

  • Page 139: Fan Pcb Abnormality

    SiME281906E Troubleshooting by Error Code Fan PCB Abnormality Applicable All indoor unit models Models Error Code Method of Error Microcomputer checks the voltage state of the fan PCB. Detection Error Decision Overvoltage or voltage drop is detected on the fan PCB. Conditions Supposed ...

  • Page 140: Humidifier System Abnormality

    Troubleshooting by Error Code SiME281906E 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 in non-operation. Error Decision The float switch is activated while the compressor is OFF.

  • Page 141: Defective Capacity Setting

    SiME281906E Troubleshooting by Error Code 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 142: Transmission Error (Between Indoor Unit Pcb And Fan Pcb)

    Troubleshooting by Error Code SiME281906E 5.10 Transmission Error (between Indoor Unit PCB and Fan PCB) Applicable All indoor unit models Models C1-01 Error Code Method of Error Check the condition of transmission between the indoor unit control PCB and the fan PCB using Detection microcomputer.
  • Page 143 SiME281906E 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 connector X70A on the Connect the connector correctly. indoor unit control PCB connected correctly? Is the connector X3A on the fan Connect the connector correctly.

  • Page 144: Thermistor Abnormality

    Troubleshooting by Error Code SiME281906E 5.11 Thermistor Abnormality Applicable All indoor unit models Models C4, C5, C9 Error Code Method of Error The error is detected by temperature detected by thermistor. Detection Error Decision The thermistor becomes disconnected or shorted while the unit is running. Conditions Supposed ...

  • Page 145: Combination Error Between Indoor Unit Pcb And Fan Pcb

    SiME281906E Troubleshooting by Error Code 5.12 Combination Error between Indoor Unit PCB and Fan Applicable All indoor unit models Models Error Code Method of Error Conduct open line detection with fan PCB using indoor unit PCB (A1P). Detection Error Decision The communication data of fan PCB is determined as incorrect Conditions Supposed...

  • Page 146: Remote Controller Thermistor Abnormality

    Troubleshooting by Error Code SiME281906E 5.13 Remote Controller Thermistor Abnormality Applicable All indoor unit models Models Error Code Method of Error Even the error is detected, the system is available for operation through the indoor suction Detection temperature sensor. Error is detected on the temperature detected by the air temperature sensor of the remote controller.

  • Page 147: Outdoor Unit Pcb Abnormality

    SiME281906E Troubleshooting by Error Code 5.14 Outdoor Unit PCB Abnormality Applicable All outdoor unit models Models Error code Method of Error Microcomputer checks whether EEPROM is normal. Detection Error Decision EEPROM error when turning the power supply ON. Conditions Supposed ...

  • Page 148: High Pressure Abnormality

    Troubleshooting by Error Code SiME281906E 5.15 High Pressure Abnormality Applicable All outdoor unit models Models Error code Method of Error Cooling: Detection  Detects errors by the outdoor heat exchanger thermistor.  The protection device circuit checks continuity in the high pressure switch. Error Decision Cooling: Conditions...
  • Page 149 SiME281906E 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 installation conditions. Is the stop valve open? Open the stop valve. Are control and protection high Connect the connector pressure switch connected to...

  • Page 150: Low Pressure Abnormality

    Troubleshooting by Error Code SiME281906E 5.16 Low Pressure Abnormality Applicable All outdoor unit models Models Error Code Method of Error Cooling: Detection  Detect errors by the indoor heat exchanger middle thermistor (R3T). Error Decision When the detection pressure is the following value; Conditions 0.12 MPa or less continues for 5 minutes (Ref.: Equivalent saturation temperature –35°C)

  • Page 151: Compressor Motor Lock

    SiME281906E Troubleshooting by Error Code 5.17 Compressor Motor Lock Applicable All outdoor unit models Models Error code Method of Error Detect the motor lock when the compressor is energized. Detection Error Decision Motor rotor does not rotate when the compressor is energized. Conditions Supposed ...

  • Page 152: Outdoor Fan Motor Abnormality

    Troubleshooting by Error Code SiME281906E 5.18 Outdoor Fan Motor Abnormality Applicable All outdoor unit models Models Error code Method of Error Abnormality of fan motor system is detected according to the fan revolution detected by Hall IC Detection when the fan motor runs. Error Decision ...
  • Page 153 SiME281906E Troubleshooting by Error Code Remove the fan motor connector. (X160A) Is the fan rotatable easily Replace the fan motor. by hand? CHECK 7 Check the resistance value for the fan motor. Are the resistance values between pins Replace the fan motor and the less than 1 Ω? outdoor unit main PCB (A1P).
  • Page 154 Troubleshooting by Error Code SiME281906E Troubleshooting RZF30/36AVMK Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Does the fuse F6U Replace the fuse. have continuity? Use only specified fuse. Turn OFF the power (and wait for 10 minutes).

  • Page 155: Electronic Expansion Valve Abnormality

    SiME281906E Troubleshooting by Error Code 5.19 Electronic Expansion Valve Abnormality Applicable All outdoor unit models Models Error code Method of Error  Detect errors based on check of continuity of the electronic expansion valve. Detection  Detect errors by suction pipe superheating degree, discharge pipe superheating degree and electronic expansion valve opening degree.
  • Page 156 Troubleshooting by Error Code SiME281906E 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 ON again. Error is displayed again? Is the electronic expansion valve connector properly...
  • Page 157 SiME281906E Troubleshooting by Error Code Are the characteristics of each thermistor normal? Replace the defective thermistor. CHECK 1 Actually, it is in wet operation. Refer to to eliminate the CHECK 9 causes of wet operation. Restart the operation. Replace the outdoor unit main Error is displayed again.

  • Page 158: Discharge Pipe Temperature Abnormality

    Troubleshooting by Error Code SiME281906E 5.20 Discharge Pipe Temperature Abnormality Applicable All outdoor unit models Models Error code Method of Error  The error is detected according to the temperature detected by the discharge pipe Detection thermistor.  The error is detected if there is an abnormality in the self-operating thermal protector. Error Decision ...
  • Page 159 SiME281906E 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 discharge pipe temperature higher than 110°C or the Abnormality in refrigerant compressor self-operating system such as refrigerant thermal protector shortage, defective...

  • Page 160: High Pressure Switch System Abnormality

    Troubleshooting by Error Code SiME281906E 5.21 High Pressure Switch System Abnormality Applicable All outdoor unit models Models Error code Method of Error The protection device circuit checks continuity in the high pressure switch. Detection Error Decision There is no continuity in the high pressure switch when the compressor stops operating. Conditions Supposed ...

  • Page 161: Compressor Self-Operating Thermal Protector

    SiME281906E Troubleshooting by Error Code 5.22 Compressor Self-Operating Thermal Protector Applicable All outdoor unit models Models Error Code Method of Error The error is detected according to the continuity in the compressor self-operating thermal Detection protector. Error Decision There is no continuity in the compressor self-operating thermal protector when the compressor Conditions starts operating.

  • Page 162: Thermistor System Abnormality

    Troubleshooting by Error Code SiME281906E 5.23 Thermistor System Abnormality Applicable All outdoor unit models Models H9, J3, J5, J6, J7, J8 Error code Method of Error The error is detected according to the temperature detected by each thermistor. Detection Error Decision Thermistor is short-circuited or thermistor harness is broken during operation.

  • Page 163: Outdoor Unit Pcb Abnormality

    SiME281906E Troubleshooting by Error Code 5.24 Outdoor Unit PCB Abnormality Applicable All outdoor unit models Models Error code Method of Error  Detect error by current value during waveform output before compressor startup. Detection  Detect error by current sensor value during synchronized operation at the time of startup. ...
  • Page 164 Troubleshooting by Error Code SiME281906E Troubleshooting RZF18/24AVMK Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Does the fuse Replace the fuse. F6U have continuity? Use only specified fuse. Is the power supply voltage within the Request an improvement to standard range?
  • Page 165 SiME281906E Troubleshooting by Error Code Troubleshooting RZF30/36AVMK Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Does the fuse Replace the fuse. F6U have continuity? Use only specified fuse. Is the power supply voltage within the Request an improvement to standard range?

  • Page 166: Radiation Fin Temperature Rise

    Troubleshooting by Error Code SiME281906E 5.25 Radiation Fin Temperature Rise Applicable All outdoor unit models Models Error code Method of Error Radiation fin temperature is detected by the radiation fin thermistor. Detection Error Decision The temperature of the inverter radiation fin rises abnormally due to defective heat dissipation. Conditions Supposed ...

  • Page 167: Dc Output Overcurrent

    SiME281906E Troubleshooting by Error Code 5.26 DC Output Overcurrent Applicable All outdoor unit models Models Error code Method of Error The error is detected by converting the current flowing to power transistor into voltage with DC Detection current sensor. Error Decision Overcurrent has run to power transistor.
  • Page 168 Troubleshooting by Error Code SiME281906E Turn on the power and operate in test operation mode (∗2). Does normal Does error code L5 Try another error diagnosis flow. operation continue? recur? (∗3) Normal. Check the power supply voltage. Is instantaneous Correct the power supply. voltage drop generated? Inspect according to the diagnosis procedure for abnormal noise,...

  • Page 169: Compressor Overcurrent

    SiME281906E Troubleshooting by Error Code 5.27 Compressor Overcurrent Applicable All outdoor unit models Models Error code Method of Error The error is detected by converting the current flowing to power transistor into voltage with DC Detection current sensor. Error Decision Compressor overload (except for when startup) is detected.
  • Page 170 Troubleshooting by Error Code SiME281906E Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the secondary current of the inverter higher than the Is the stop valve open? Open the stop valve.

  • Page 171: Compressor Startup Abnormality

    SiME281906E Troubleshooting by Error Code 5.28 Compressor Startup Abnormality Applicable All outdoor unit models Models Error code Method of Error The error is detected by converting the current flowing to power transistor into voltage with CT1 Detection (DC current sensor). Outdoor unit main PCB detects the disorder of position signal.
  • Page 172 Troubleshooting by Error Code SiME281906E Turn the main power supply OFF. Is the compressor lead wire securely connected to Connect tightly and correctly. the PCB and compressor? Fix the open phase. Is there open phase? Disconnect the connection between the compressor and inverter. CHECK 4 Continuity check in the Replace the outdoor unit main...

  • Page 173: Transmission Error Between Microcomputers On Outdoor Unit Main Pcb

    SiME281906E Troubleshooting by Error Code 5.29 Transmission Error between Microcomputers on Outdoor Unit Main PCB Applicable All outdoor unit models Models Error code Method of Error Check whether transmission between microcomputers on the outdoor unit main PCB is carried Detection out normally.

  • Page 174: Pam Circuit Error

    Troubleshooting by Error Code SiME281906E 5.30 PAM Circuit Error Applicable RZF18/24AVMK Models Error code Method of Error The error is detected according to the voltage waveform of main circuit capacitor built in Detection inverter. Error Decision The above voltage waveform fluctuation increases. Conditions Supposed ...

  • Page 175: Open Phase Or Power Supply Voltage Imbalance

    SiME281906E Troubleshooting by Error Code 5.31 Open Phase or Power Supply Voltage Imbalance Applicable RZF30/36AVMK Models Error code Method of Error The error is detected according to the voltage waveform of main circuit capacitor built in Detection inverter. Error Decision The above voltage waveform fluctuation increases.

  • Page 176: Power Module Thermistor Abnormality

    Troubleshooting by Error Code SiME281906E 5.32 Power Module Thermistor Abnormality Applicable RZF30/36AVMK Models Error code Method of Error Detects open or short-circuit of the radiation fin thermistor while the compressor stops Detection operating. Error Decision Open or short-circuit of the radiation fin thermistor is detected while the compressor stops Conditions operating.

  • Page 177: Capacity Setting Abnormality

    SiME281906E Troubleshooting by Error Code 5.33 Capacity Setting Abnormality Applicable All outdoor unit models Models Error code Method of Error Judge whether the combination is correct through communication between the inverter and Detection control microcomputers and the fan and control microcomputers. Error Decision If there is a mismatch in the signals sent between the inverter and control microcomputers, or Conditions...

  • Page 178: Refrigerant Shortage (Warning/Alarm)

    Troubleshooting by Error Code SiME281906E 5.34 Refrigerant Shortage (Warning/Alarm) Applicable All outdoor unit models Models Error code Method of Error Judgment is based on the opening degree of electronic expansion valves as well as individual Detection temperatures and pressures. Error Decision An error code is displayed but system operation continues.

  • Page 179: Refrigerant Shortage (Error)

    SiME281906E Troubleshooting by Error Code 5.35 Refrigerant Shortage (Error) Applicable All outdoor unit models Models Error code Method of Error Cooling Detection Detection based on difference in temperature between temperature preset by remote controller and suction air temperature, electronic expansion valve opening degree, compressor frequency and low pressure.
  • Page 180 Troubleshooting by Error Code SiME281906E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the stop valve Open the stop valve. open? Check for refrigerant CHECK 11 shortage. Is the refrigerant Collect refrigerant and level proper?

  • Page 181: Power Supply Voltage Abnormality

    SiME281906E Troubleshooting by Error Code 5.36 Power Supply Voltage Abnormality Applicable All outdoor unit models Models Error code Method of Error The error is detected according to the voltage of main circuit capacitor built in inverter and the Detection power supply voltage. Error Decision The voltage of main circuit capacitor built in inverter and the power supply voltage are detected Conditions...
  • Page 182 Troubleshooting by Error Code SiME281906E Connect the fan motor and Replace the outdoor unit main PCB operate? (A1P). Are the power supply and compressor Connect the wires correctly. connections correct? Is there open phase? While the compressor is running, measure the voltage between C+ and C–...
  • Page 183 SiME281906E Troubleshooting by Error Code Troubleshooting RZF30/36AVMK Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the power supply voltage within the Correct the power supply voltage. normal range? Remove the fan motor connector from the PCB and start operation.

  • Page 184: Transmission Error Between Indoor Unit And Outdoor Unit, Outdoor Fan Motor Abnormality

    Troubleshooting by Error Code SiME281906E 5.37 Transmission Error between Indoor Unit and Outdoor Unit, Outdoor Fan Motor Abnormality Applicable All indoor unit models All outdoor unit models Models Error code Method of Error The microcomputer detects transmission error between the indoor and the outdoor unit. Detection Error Decision The normal transmission is not conducted for a certain period of time.
  • Page 185 SiME281906E Troubleshooting by Error Code Troubleshooting RZF18/24AVMK Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the power supply voltage within the Correct the power supply normal range? voltage. The HAP on the outdoor unit main PCB blinks rapidly (∗1)
  • Page 186 Troubleshooting by Error Code SiME281906E Turn OFF the power supply and disconnect the connector of the outdoor fan motor. Then power ON again. Is HAP on the Replace the outdoor fan outdoor unit main PCB motor. blinking? CHECK 7 Check the resistance value of the outdoor fan motor.
  • Page 187 SiME281906E Troubleshooting by Error Code Troubleshooting RZF30/36AVMK Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the power Correct the power supply supply voltage within the voltage. normal range? The HAP on the outdoor unit main PCB blinks rapidly (∗1)
  • Page 188 Troubleshooting by Error Code SiME281906E Turn OFF the power supply and disconnect the connector of the outdoor fan motor. Then power ON again. Is HAP on the Replace the outdoor fan outdoor unit main PCB motor. blinking? CHECK 7 Check the resistance value of the outdoor fan motor.

  • Page 189: Transmission Error Between Indoor Unit And Remote Controller

    SiME281906E Troubleshooting by Error Code 5.38 Transmission Error between Indoor Unit and Remote Controller 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 The transmission between the indoor unit and the remote controller is not normal over a certain Conditions amount of time.

  • Page 190: Transmission Error Between Main Remote Controller And Sub Remote Controller

    Troubleshooting by Error Code SiME281906E 5.39 Transmission Error between Main Remote Controller and Sub Remote Controller 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) is normal.

  • Page 191: Field Setting Switch Abnormality

    SiME281906E Troubleshooting by Error Code 5.40 Field Setting Switch Abnormality Applicable All indoor unit models Models Error Code Error Decision  The indoor unit and outdoor unit combination is incorrect. Conditions  Field settings are not correct. Supposed  Multiple remote controllers connected Causes ...
  • Page 192 Troubleshooting by Error Code SiME281906E Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the indoor unit and outdoor unit Use the correct combination. combination correct? multiple indoor units Use only one remote controller.

  • Page 193: Centralized Address Setting Error

    SiME281906E Troubleshooting by Error Code 5.41 Centralized Address Setting Error Applicable All indoor unit models Models Error Code Method of Error Indoor unit microcomputer detects and judges the centralized address signal according to the Detection transmission between indoor units. Error Decision When the microcomputer judges that the centralized address signal is duplicated Conditions An error code is displayed but system operation continues.

  • Page 194: Transmission Error Between Centralized Controller And Indoor Unit

    Troubleshooting by Error Code SiME281906E 5.42 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 195 SiME281906E 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 any broken wire or wrong wiring Correct the wiring. found? Was the indoor unit disconnected after connected or central Reset the power supplies of...

  • Page 196: Transmission Error Between Indoor Unit And Outdoor Unit

    Troubleshooting by Error Code SiME281906E 5.43 Transmission Error between Indoor Unit and Outdoor Unit Applicable All outdoor unit models Models Error code Method of Error Checks the transmission between the indoor and outdoor units with a microcomputer when the Detection power turned ON.

  • Page 197: Check

    SiME281906E Check 6. Check Thermistor Check CHECK 1 If the cause of the problem is related to the thermistors, then the thermistors should be checked prior to changing the PCB. Overview of Thermistors The table below contains an overview of the thermistors: Indoor Thermistor FDFM-A...
  • Page 198 Check SiME281906E Thermistor Resistance / Temperature Characteristics Thermistor Resistance (k) temperature Type A Type B Type E (°C) 30 363.8 361.7719 362.4862 25 266.8 265.4704 265.9943 20 197.8 196.9198 197.3083 15 148.2 147.5687 147.8597 10 112.0 111.6578 111.8780 5 85.52 85.2610 85.4291 65.84...
  • Page 199 SiME281906E Check Thermistor Resistance (k) temperature Type G Type L Type M (°C) 30 4759 359.9 — 25 3454 265.1 — 20 2534 197.1 197.7 15 1877 147.7 148.2 10 1404 111.8 112.1 5 1059 85.39 85.60 806.5 65.80 65.93 618.9 51.13 51.14...

  • Page 200: High Pressure Check

    Check SiME281906E High Pressure Check CHECK 2 Abnormally high pressure level is mostly caused by the condenser side. The following contents are provided by service engineer based on their field checks. Further, the number is listed in the order of degree of influence. Cooling Check items (Possible causes) Judgment...

  • Page 201: Power Transistor Check

    SiME281906E Check Power Transistor Check CHECK 4 Use a multimeter to measure the resistance to determine if the power transistor is defective or not. 1. Do not touch live parts (high voltage parts) within 10 minutes after turning off the power supply.
  • Page 202 Check SiME281906E 6. Use a multimeter to measure the resistance listed in the table. Among the three phases listed in the table, if there is one phase with unbalanced resistance (with a value five times higher than the other values), then the power transistor is defective. When normal, all phases have the same resistance value.

  • Page 203: Fan Motor Connector Check

    SiME281906E Check Fan Motor Connector Check CHECK 7 FDMF-A, RZF18/24AVMK 1. Turn the power supply OFF. 2. With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table. White Orange Brown...

  • Page 204: Electronic Expansion Valve Check

    Check SiME281906E Electronic Expansion Valve Check CHECK 8 Outdoor unit 1 Orange 1 White 2 Red 2 Yellow 3 Yellow 3 Orange 4 Black 4 Blue 5 — 5 — 6 Gray 6 Red Measurement point Judgment 1 - 6 2 - 6 35-55 ...

  • Page 205: Wet Operation Check

    SiME281906E Check Wet Operation Check CHECK 9 Referring to the Fault Tree Analysis (FTA) shown below, identify the defective points. Refrigerant Frequent starts and stops of the compressor dwelling  Refer to Excessive refrigerant charging CHECK 12  Are the coil resistance Defective valve coil Defective electronic and insulation normal?

  • Page 206: Clogged Points Check

    Check SiME281906E Clogged Points Check CHECK 10 Temperature differences must occur before or after the clogged points. COMP Indoor unit Outdoor unit Check points Check factor Causes Remedies Around expansion Temperature Dust Replace the electronic expansion mechanism difference Choked moisture valve.

  • Page 207: Refrigerant Shortage Check

    SiME281906E Check Refrigerant Shortage Check CHECK 11 As criteria for judging whether refrigerant is shortage or not, refer to the following operating conditions. Cooling 1. As suction superheating degree increases due to refrigerant shortage, the electronic expansion valve tends to open (opens fully) in order to avoid overheat operation. 2.

  • Page 208: Refrigerant Overcharge Check

    Check SiME281906E 6.10 Refrigerant Overcharge Check CHECK 12 As criteria for judging whether refrigerant is excessively charged or not, refer to the following operating conditions. 1. Because high pressure rises due to excessive charging, overload control is carried out and capacity tends to run short.

  • Page 209: Part 7 Appendix

    SiME281906E Part 7 Appendix 1. Wiring Diagrams..................205 1.1 Indoor Unit....................205 1.2 Outdoor Unit ..................206 Part 7 Appendix...

  • Page 210: Wiring Diagrams

    Wiring Diagrams SiME281906E 1. Wiring Diagrams Indoor Unit FDMF18/24/30/36AVMK Part 7 Appendix...

  • Page 211: Outdoor Unit

    SiME281906E Wiring Diagrams Outdoor Unit RZF18/24AVMK Part 7 Appendix...
  • Page 212 Wiring Diagrams SiME281906E RZF30/36AVMK Part 7 Appendix...
  • Page 213 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.

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