Daikin FVKS25BVMB Service Manual

Inverter pair floor standing type b-series

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Service manual (170 pages)

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Summary of Contents for Daikin FVKS25BVMB

Page 1 SiBE06 - 514A Inverter Pair Floor Standing Type B-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump...
Page 2 SiBE06-514A Inverter Pair B-Series Cooling Only Indoor Unit FVKS25BVMB FVKS25BAVMB FVKS35BVMB FVKS35BAVMB Outdoor Unit RKS25DVMB RKS25D2VMB RKS25D3VMB RKS35DVMB RKS35D2VMB RKS35D3VMB Heat Pump Indoor Unit FVXS25BVMB FVXS25BAVMB FVXS35BVMB FVXS35BAVMB Outdoor Unit RXS25DVMB RXS25D2VMB RXS25D3VMB RXS35DVMB RXS35D2VMB RXS35D3VMB Table of Contents...
Page 3: Table Of Contents
SiBE06-514A 1. Introduction .....................v 1.1 Safety Cautions ..................v Part 1 List of Functions ..............1 1. List of Functions ..................2 Part 2 Specifications ..............5 1. Specifications ..................6 1.1 Cooling Only.....................6 1.2 Heat Pump ....................8 Part 3 Printed Circuit Board Connector Wiring Diagram ... 11 1.
Page 4 SiBE06-514A Part 5 System Configuration............49 1. System Configuration................50 2. Instruction....................51 2.1 Safety precautions..................51 2.2 Names of parts ..................53 2.3 Preparation before Operation..............56 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........59 2.5 Adjusting the Air Flow Direction .............61 2.6 POWERFUL Operation ................63 2.7 OUTDOOR UNIT SILENT Operation .............64 2.8 HOME LEAVE Operation ...............65...
Page 5 SiBE06-514A Part 7 Removal Procedure ............125 1. Indoor Unit...................126 1.1 Removal of the Air Filter / Front Panel ..........126 1.2 Removal of the Horizontal Blade............129 1.3 Removal of the Electrical Box ..............130 1.4 Removal of the PCB................133 1.5 Removal of the Heat Exchanger ............135 1.6 Removal of the Fan Rotor / Fan Motor..........137 2.
Page 6: Introduction
SiBE06-514A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 7: Cautions Regarding Products After Repair
Introduction SiBE06-514A Warning Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
Page 8: Inspection After Repair
SiBE06-514A Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
Page 9: Using Icons
Introduction SiBE06-514A Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure.
Page 10: Part 1 List Of Functions
SiBE06-514A Part 1 List of Functions 1. List of Functions ..................2 List of Functions...
Page 11: List Of Functions
List of Functions SiBE06-514A 1. List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter Air Purifying Filter with Photocatalytic PAM Control...
Page 12 SiBE06-514A List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter Air Purifying Filter with Photocatalytic PAM Control —...
Page 13 List of Functions SiBE06-514A List of Functions...
Page 14: Part 2 Specifications
SiBE06-514A Part 2 Specifications 1. Specifications ..................6 1.1 Cooling Only.....................6 1.2 Heat Pump ....................8 Specifications...
Page 15: Specifications
Specifications SiBE06-514A 1. Specifications Cooling Only 50Hz 230V Indoor Units FVKS25BVMB FVKS35BVMB Model Outdoor Units RKS25D(2)VMB RKS35D(2)VMB 2.5 (1.3~3.0) 3.5 (1.4~3.8) Capacity Btu/h 8,500 (4,400~10,200) 11,900 (4,750~12,950) kcal/h 2,150 (1,110~2,580) 3,010 (1,200~3,260) Moisture Removal Running Current Power Consumption 695 (300~920)
Page 16 SiBE06-514A Specifications 50Hz 230V Indoor Units FVKS25BAVMB FVKS35BAVMB Model Outdoor Units RKS25D3VMB RKS35D3VMB 2.5 (1.3~3.0) 3.5 (1.4~3.8) Capacity Btu/h 8,500 (4,400~10,200) 11,900 (4,750~12,950) kcal/h 2,150 (1,110~2,580) 3,010 (1,200~3,260) Moisture Removal Running Current Power Consumption 695 (300~920) 1,090 (300~1,250) Power Factor 79.5 94.8 3.60...
Page 17: Heat Pump
Specifications SiBE06-514A Heat Pump 50Hz 230V Indoor Units FVXS25BVMB FVXS35BVMB Model RXS25D(2)VMB RXS35D(2)VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 3.5 (1.4~3.8) 4.5 (1.4~5.0) Capacity Btu/h 8,500 (4,400~10,200) 11,600 (4,400~15,350) 11,900 (4,750~12,950) 15,350 (4,750~17,050) kcal/h 2,150 (1,110~2,580) 2,920 (1,110~3,870) 3,010 (1,200~3,260) 3,870 (1,200~4,300)
Page 18 SiBE06-514A Specifications 50Hz 230V Indoor Units FVXS25BAVMB FVXS35BAVMB Model RXS25D3VMB RXS35D3VMB Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.5) 3.5 (1.4~3.8) 4.5 (1.4~5.0) Capacity Btu/h 8,500 (4,400~10,200) 11,600 (4,400~15,350) 11,900 (4,750~12,950) 15,350 (4,750~17,050) kcal/h 2,150 (1,110~2,580) 2,920 (1,110~3,870) 3,010 (1,200~3,260) 3,870 (1,200~4,300) Moisture Removal...
Page 19 Specifications SiBE06-514A Specifications...
Page 20: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE06-514A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........12 1.1 Indoor Unit....................12 1.2 Outdoor Unit ...................14 Printed Circuit Board Connector Wiring Diagram...
Page 21: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiBE06-514A Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors Connector for swing motor and lower air outlet motor Connector for signal receiver 3) S31, Connector for room temp / heat exchanger thermistor 4) S201, S203, Connector for control PCB (1) S7, S24, 5) S202, S204,...
Page 22 SiBE06-514A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Control PCB (indoor unit) PCB (3): Display PCB PCB (4): Signal Receiver PCB Printed Circuit Board Connector Wiring Diagram...
Page 23: Outdoor Unit
Printed Circuit Board Connector Wiring Diagram SiBE06-514A Outdoor Unit Connectors Connector for filter PCB Connector for control PCB Connector for electronic expansion valve coil Connector for compressor motor Connector for overload protector Connector for fan motor Connector for four way valve coil Connector for thermistors (outdoor air, heat exchanger, discharge pipe) HC3, HC4, HL3, HN3...
Page 24 SiBE06-514A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Filter PCB V3 V2 FU3(20A) (R4293) PCB(2): Control PCB (outdoor unit) S40 LED A FU2(3.15A) FU1(3.15A) (R4605) Printed Circuit Board Connector Wiring Diagram...
Page 25 Printed Circuit Board Connector Wiring Diagram SiBE06-514A Printed Circuit Board Connector Wiring Diagram...
Page 26: Part 4 Function And Control
SiBE06-514A Part 4 Function and Control 1. Main Functions..................18 1.1 Frequency Principle................18 1.2 Flap Control....................20 1.3 Air Flow Selection...................21 1.4 Fan Speed Control for Indoor Units............22 1.5 Programme Dry Function ...............23 1.6 Automatic Operation................24 1.7 Thermostat Control.................25 1.8 NIGHT SET Mode ..................26 1.9 HOME LEAVE Operation ...............27 1.10 Inverter POWERFUL Operation .............28 1.11 Other Functions..................29...
Page 27: Main Functions
Main Functions SiBE06-514A 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
Page 28 SiBE06-514A Main Functions Inverter Features The inverter provides the following features: The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling / heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.
Page 29: Flap Control
Main Functions SiBE06-514A Flap Control Wide-angle Flap The large flaps send a large volume of air all over the room. The flap provides an optimum control in cooling, heating and dry mode. Louvres The louvres, made of elastic synthetic resin, provide a wide range of airflow that guarantees a comfortable air distribution.
Page 30: Air Flow Selection
SiBE06-514A Main Functions Air Flow Selection When setting the Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode / situation. air flow selection switch to Operating mode Situation Blowing pattern When the room has become So that air does not come into direct contact fully cool, or when one hour has with people, air is blown upper air outlet, passed since turning on the air...
Page 31: Fan Speed Control For Indoor Units
Main Functions SiBE06-514A Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to trouble shooting for fan motor on page 87.
Page 32: Programme Dry Function
SiBE06-514A Main Functions Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of The microcomputer automatically sets the temperature and fan settings.
Page 33: Automatic Operation
Main Functions SiBE06-514A Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Page 34: Thermostat Control
SiBE06-514A Main Functions Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
Page 35: Night Set Mode
Main Functions SiBE06-514A NIGHT SET Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.
Page 36: Home Leave Operation
SiBE06-514A Main Functions HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided.
Page 37: Inverter Powerful Operation
Main Functions SiBE06-514A 1.10 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed / setting temperature will be converted to the following states in a period of twenty minutes.
Page 38: Other Functions
SiBE06-514A Main Functions 1.11 Other Functions 1.11.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 39 Main Functions SiBE06-514A 1.11.7 Self-Diagnosis Digital Display The microcomputer continuously monitors main operating conditions of the indoor unit, outdoor unit and the entire system. When an abnormality occur, the LCD remote controller displays error code. These indications allow prompt maintenance operations. 1.11.8 Auto-restart Function Even if a power failure (including one for just a moment) occurs during the operation, the...
Page 40: Function Of Thermistor
SiBE06-514A Function of Thermistor Function of Thermistor Heat Pump Model Four way valve Compressor (R3305) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Exchanger The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor (DCB)
Page 41: Cooling Only Model
Function of Thermistor SiBE06-514A Cooling Only Model Compressor (R2828) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor (DCB) target discharge temperature can be obtained.
Page 42: Control Specification
SiBE06-514A Control Specification 3. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)
Page 43: Frequency Control
Control Specification SiBE06-514A Frequency Control Outline Frequency will be determined according to the difference between room and set temperature. The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3.
Page 44 SiBE06-514A Control Specification 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze-up protection, dew prevention, fin thermistor temperature. 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep.
Page 45: Controls At Mode Changing / Start-Up
Control Specification SiBE06-514A Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the discharge pipe temperature. Detail Preheating ON Condition When the discharge pipe temperature is below 10ºC, inverter in open phase operation starts.
Page 46: Discharge Pipe Control
SiBE06-514A Control Specification 3.3.4 3-minute Standby Prohibit to turn ON the compressor for 3 minutes after turning it off. (Except when defrosting. (Only for Heat Pump Model).) 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows.
Page 47: Input Current Control
Control Specification SiBE06-514A Input Current Control Outline The microcomputer calculates the input current during the compressor is running, and set the frequency upper limit from such input current. In case of heat pump model, this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation.
Page 48: Freeze-Up Protection Control
SiBE06-514A Control Specification Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from...
Page 49: Fan Control
Control Specification SiBE06-514A Fan Control Outline Fan control is carried out with following functions. 1. Fan control when defrosting 2. Fan OFF delay when stopped 3. ON/OFF control when cooling operation 4. Fan control when forced operation 5. Fan control in low noise mode 6.
Page 50: Defrost Control
SiBE06-514A Control Specification 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.
Page 51: Electronic Expansion Valve Control
Control Specification SiBE06-514A 3.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.
Page 52 SiBE06-514A Control Specification 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.11.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.
Page 53 Control Specification SiBE06-514A 3.11.7 Control when frequency is changed When the target discharge pipe temperature control is active, if the target frequency is changed for a specified value in a certain time period, cancel the target discharge pipe temperature control and change the target opening of the electronic expansion valve according to the shift. 3.11.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger...
Page 54: Malfunctions
SiBE06-514A Control Specification 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Outdoor air thermistor 3.12.2 Detection of Overload Over Current Outline In order to protect the inverter, detect an excessive output current, and for protecting...
Page 55: Forced Operation Mode
Control Specification SiBE06-514A Detail I Judgment by power consumption When an output frequency is exceeds 55 Hz and the input current is less than specified value, the adjustment is made for insufficient gas. II Judgment by discharge pipe temperature When discharge pipe temperature is 30°C higher than target value and the electronic expansion value opening is 480 pulses (max.), the adjustment is made for insufficient gas.
Page 56: Facility Setting Jumper (Cooling At Low Outdoor Temperature)
SiBE06-514A Control Specification 3.15 Facility Setting Jumper (cooling at low outdoor temperature) Outline This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in a residence or office (the space where there is a human). Detail You can expand the operation range to –15°C by cutting jumper 8 (J8) on the PCB.
Page 57 Control Specification SiBE06-514A Function and Control...
Page 58: Part 5 System Configuration
SiBE06-514A Part 5 System Configuration 1. System Configuration................50 2. Instruction....................51 2.1 Safety precautions..................51 2.2 Names of parts ..................53 2.3 Preparation before Operation..............56 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........59 2.5 Adjusting the Air Flow Direction .............61 2.6 POWERFUL Operation ................63 2.7 OUTDOOR UNIT SILENT Operation .............64 2.8 HOME LEAVE Operation ...............65...
Page 59: System Configuration
System Configuration SiBE06-514A 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
Page 60: Instruction
• Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.
Page 61: Installation Site
Instruction SiBE06-514A • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.
Page 62: Names Of Parts
SiBE06-514A Instruction Names of parts Names of parts Indoor Unit O F F Opening the front grille How to open the grille: (page 22) Air outlet selection switch 12 13 • This setting blows air from upper outlet only. This setting automatically decides a blow •...
Page 63 Instruction SiBE06-514A Outdoor Unit Indoor Unit 1. Photocatalytic deodorizing filter and • The operation mode refers to the following Air purifying filter: table. • These filters are attached to the inside of the air Temperature Air flow Mode filters. setting rate 2.
Page 64: Remote Controller
SiBE06-514A Instruction Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT CANCEL TIMER < > ARC433A5, A6 1. Signal transmitter: • It selects the operation mode. • It sends signals to the indoor unit. (AUTO/DRY/COOL/HEAT/FAN) (page 10.) 2. Display: 8.
Page 65: Preparation Before Operation
Instruction SiBE06-514A Preparation before Operation Preparation Before Operation To set the batteries Position + and – correctly! 1. Press with a finger and slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
Page 66 SiBE06-514A Instruction Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control- ler, such as a curtain, the unit will not operate. •...
Page 67 Instruction SiBE06-514A To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. HOME LEAVE ON/OFF Holding down “ ” or “ ” button rapidly TEMP POWERFUL increases or decreases the time display.
Page 68: Auto · Dry · Cool · Heat · Fan Operation
SiBE06-514A Instruction AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
Page 69 Instruction SiBE06-514A To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...
Page 70: Adjusting The Air Flow Direction
SiBE06-514A Instruction Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. To adjust the horizontal blade (flap) 1. Press “SWING button”. The display will light up and the flaps will begin to swing.
Page 71 Instruction SiBE06-514A Air flow selection • Make air flow selection according to what suits you. When setting the air flow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...
Page 72: Powerful Operation
SiBE06-514A Instruction POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used HOME LEAVE...
Page 73: Outdoor Unit Silent Operation
Instruction SiBE06-514A OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is conve- nient during night. To start OUTDOOR UNIT SILENT operation 1.
Page 74: Home Leave Operation
SiBE06-514A Instruction HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. OF F 1, 2 HOME LEAVE...
Page 75 Instruction SiBE06-514A What’s the HOME LEAVE operation Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set tem- perature and air flow rate.
Page 76: Timer Operation
SiBE06-514A Instruction TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER opera- tion •...
Page 77 Instruction SiBE06-514A To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time (page 9.). 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 78: Care And Cleaning
SiBE06-514A Instruction 2.10 Care and Cleaning CARE Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units ■ Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. ■...
Page 79: Air Filter
Instruction SiBE06-514A Filters 1. Open the front grille. (page 22) 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the air purifying filter, Photocatalytic deodorizing filter.
Page 80: Before A Long Idle Period
SiBE06-514A Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. If no drain water is seen, water may be leaking from the indoor unit.
Page 81: Troubleshooting
Instruction SiBE06-514A 2.11 Troubleshooting TROUBLE SHOOTING Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
Page 82: Check Again
SiBE06-514A Instruction Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off) •...
Page 83: Disposal Requirements
Instruction SiBE06-514A Call the service shop immediately. WARNING ■ When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. ■...
Page 84: Fault Diagnosis
SiBE06-514A Instruction Fault diagnosis FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.
Page 85 Instruction SiBE06-514A System Configuration...
Page 86: Part 6 Service Diagnosis
SiBE06-514A Part 6 Service Diagnosis 1. Caution for Diagnosis................78 2. Problem Symptoms and Measures ............79 3. Service Check Function ................80 4. Troubleshooting ..................83 4.1 Error Codes and Description ..............83 4.2 Indoor Unit PCB Abnormality ..............84 4.3 Freeze-up Protection Control or High Pressure Control......85 4.4 Fan Motor (DC Motor) or Related Abnormality........87 4.5 Thermistor or Related Abnormality (Indoor Unit)........89 4.6 Shutter Drive Motor / Shutter Limit Switch Abnormality ......90...
Page 87: Caution For Diagnosis
Caution for Diagnosis SiBE06-514A 1. Caution for Diagnosis The Operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
Page 88: Problem Symptoms And Measures
SiBE06-514A Problem Symptoms and Measures Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the Units Check the power supply. Check to make sure that the rated voltage is — Operates. supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...
Page 89: Service Check Function
Service Check Function SiBE06-514A Service Check Function In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
Page 90 SiBE06-514A Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP ,TEMP , MODE) simultaneously. (R4272) The digit of the number of tens blinks. Try again from the start when the digit does not blink. (R4273) 2.
Page 91 Service Check Function SiBE06-514A 5. Press the TEMP button. Press TEMP or TEMP and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. “ pi ” : The both numbers of tens and units do not accord with the error code. “...
Page 92: Troubleshooting
SiBE06-514A Troubleshooting Troubleshooting Error Codes and Description Reference Code Indication Description Page System — Normal Insufficient gas Over-voltage detection Signal transmission error (between indoor and outdoor unit) Unspecified voltage (between indoor and outdoor unit) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality Heat exchanger temperature thermistor abnormality...
Page 93: Indoor Unit Pcb Abnormality
Troubleshooting SiBE06-514A Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed Faulty indoor unit PCB Faulty connector connection Causes Troubleshooting...
Page 94: Freeze-Up Protection Control Or High Pressure Control
SiBE06-514A Troubleshooting Freeze-up Protection Control High Pressure Control Remote Controller Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection Freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
Page 95 Troubleshooting SiBE06-514A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.120 Check the air passage. Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.
Page 96: Fan Motor (Dc Motor) Or Related Abnormality
SiBE06-514A Troubleshooting Fan Motor (DC Motor) or Related Abnormality Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed is less than 50% of the H tap under maximum fan motor rotation demand.
Page 97 Troubleshooting SiBE06-514A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply Refer to P.117 and rotate fan by hand. Check No.02 Does fan rotate Replace fan motor.
Page 98: Thermistor Or Related Abnormality (Indoor Unit)
SiBE06-514A Troubleshooting Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation∗.
Page 99: Shutter Drive Motor / Shutter Limit Switch Abnormality
Troubleshooting SiBE06-514A Shutter Drive Motor Shutter Limit Switch Abnormality Remote Controller Display Method of The shutter open/close performance is detected by the limit switch attached on its structure. In this way, the shutter drive motor and the shutter limit switch are checked for failure. Malfunction Detection Malfunction...
Page 100: Signal Transmission Error (Between Indoor And Outdoor Unit)
SiBE06-514A Troubleshooting Signal Transmission Error (between Indoor and Outdoor Unit) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal.
Page 101: Unspecified Voltage (Between Indoor And Outdoor Units)
Troubleshooting SiBE06-514A Unspecified Voltage (between Indoor and Outdoor Units) Remote Controller Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Detection Malfunction The pair type and multi type are interconnected. Decision Conditions Supposed...
Page 102: Outdoor Unit Pcb Abnormality
SiBE06-514A Troubleshooting Outdoor Unit PCB Abnormality Remote Controller Display Method of The system follows the microprocessor program to make sure it runs normally. The system checks to see if the zero-cross signal comes in properly. Malfunction Detection Malfunction The microprocessor program runs out of control. The zero-cross signal is not detected.
Page 103: Ol Activation (Compressor Overload)
Troubleshooting SiBE06-514A 4.10 OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).
Page 104: Compressor Lock
SiBE06-514A Troubleshooting 4.11 Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction The system judges the compressor lock, and stops due to over current. The system judges the compressor lock, and cannot operation with position detection within Decision 15 seconds after start up.
Page 105: Dc Fan Lock
Troubleshooting SiBE06-514A 4.12 DC Fan Lock Remote Controller Display Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being detected by the Hall IC. Malfunction Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.
Page 106: Input Over Current Detection
SiBE06-514A Troubleshooting 4.13 Input Over Current Detection Remote Controller Display Method of An input over-current is detected by checking the input current value with the compressor running. Malfunction Detection Malfunction The following current with the compressor running continues for 2.5 seconds. Cooling / Heating: Above 12A Decision Conditions...
Page 107: Four Way Valve Abnormality
Troubleshooting SiBE06-514A 4.14 Four Way Valve Abnormality Remote Controller Display Method of The indoor air temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if Malfunction they function within their normal ranges in the operating mode.
Page 108 SiBE06-514A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.05 Refer to P.119 Four way valve coil Correct. disconnected (loose)? Check No.06 Refer to P.120 Reconnect. Harness out of connector? Check No.11 Refer to P.122...
Page 109: Discharge Pipe Temperature Control
Troubleshooting SiBE06-514A 4.15 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. Malfunction Detection Malfunction If a stop takes place 4 times successively due to abnormal discharge pipe temperature, the system will be shut down.
Page 110: High Pressure Control In Cooling
SiBE06-514A Troubleshooting 4.16 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
Page 111 Troubleshooting SiBE06-514A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.118 Check the installation space. Check No.06 Check No. 07 Abnormal Installation condition Change the air outlet grille Refer to P.120 check position.
Page 112: Compressor System Sensor Abnormality
SiBE06-514A Troubleshooting 4.17 Compressor System Sensor Abnormality Remote Controller Display Method of The system checks the DC current before the compressor starts. Malfunction Detection Malfunction If the DC current before compressor start-up is out of the range 0.5-4.5 V (sensor output converted to voltage value) or if the DC voltage before compressor start-up is below 50 V.
Page 113: Position Sensor Abnormality
Troubleshooting SiBE06-514A 4.18 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
Page 114: Dc Voltage / Current Sensor Abnormality
SiBE06-514A Troubleshooting 4.19 DC Voltage / Current Sensor Abnormality Remote Controller Display Method of Detecting abnormality of the DC sensor by the running frequency of compressor and by the input current multiplied DC voltage and current. Malfunction Detection Malfunction The compressor running frequency is below 52 Hz. (The input current is also below 0.5 A.) Decision If this error repeats 4 times, the system will be shut down.
Page 115: Thermistor Or Related Abnormality (Outdoor Unit)
Troubleshooting SiBE06-514A 4.20 Thermistor or Related Abnormality (Outdoor Unit) P4, J3, J6, H9 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. [A thermistor error is detected by checking the temperature.] Malfunction Detection Malfunction...
Page 116 SiBE06-514A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn on the power again. Check No.06 Refer to P.120 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.
Page 117: Electrical Box Temperature Rise
Troubleshooting SiBE06-514A 4.21 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C. Reset is made when the temperature drops below 70°C.
Page 118 SiBE06-514A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 WARNING Turn off the power and turn it on Refer to P.120 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 80˚C and stops itself when it...
Page 119: Radiation Fin Temperature Rise
Troubleshooting SiBE06-514A 4.22 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Detection Malfunction If the radiation fin temperature with the compressor on is above 90°C. If a radiation fin temperature rise takes place 4 times successively, the system will be shut Decision down.
Page 120 SiBE06-514A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn off the power and turn it on Refer to P.120 again to get the system started. Check No.07 Refer to P.121 Error displayed again?
Page 121: Output Over Current Detection
Troubleshooting SiBE06-514A 4.23 Output Over Current Detection Remote Controller Display Method of An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
Page 122 SiBE06-514A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and Refer to P.121 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.
Page 123: Insufficient Gas
Troubleshooting SiBE06-514A 4.24 Insufficient Gas Remote Controller Display Method of Gas shortage detection I: Gas shortage is detected by checking the input current value and the compressor running Malfunction frequency. If the gas is short, the input current is smaller than the normal value. Detection Gas shortage detection II: Gas shortage is detected by checking the discharge temperature and the opening of the...
Page 124 SiBE06-514A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.118 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor Check No.06 * Room temperature thermistor * Outdoor air thermistor...
Page 125: Over-Voltage Detection
Troubleshooting SiBE06-514A 4.25 Over-voltage Detection Remote Controller Display Method of An abnormal voltage rise is detected by checking the specified over-voltage detection circuit. Malfunction Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer (The voltage is over 400V). Decision The system will be shut down if the error occurs 255 times.
Page 126: Check
SiBE06-514A Check 5. Check How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7 and 4-8). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 127: Electronic Expansion Valve Check
Check SiBE06-514A 5.1.3 Electronic Expansion Valve Check Check No.04 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the connector number. 2.
Page 128: Four Way Valve Performance Check
SiBE06-514A Check 5.1.4 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Cooling / dry : No continuity Start the heating-mode run. Heating : Continuity S80 voltage at DC 180-220 V with Replace the outdoor unit compressor on? PCB.
Page 129: Thermistor Resistance Check
Check SiBE06-514A 5.1.5 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.
Page 130: Installation Condition Check
SiBE06-514A Check 5.1.6 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal Change the position of the air dimensions of the air suction discharge grille or the and discharge area. installation location. Normal Does the discharged air from other outdoor Change the position of the air unit cause an increase of discharge grille or the...
Page 131: Outdoor Unit Fan System Check
Check SiBE06-514A 5.1.8 Outdoor Unit Fan System Check Check No.09 DC motor Check the outdoor unit fan system. Fan motor lead wire Outdoor unit fan running? Reconnect. connector disconnected? Outdoor unit fan system Go to Check No. 15. functioning. (R2857) 5.1.9 Power Supply Waveforms Check Check No.10...
Page 132: Power Transistor Check
SiBE06-514A Check 5.1.11 Power Transistor Check Check No.13 Note: Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is approx. 0 volt before checking power transistor. < Measuring method > Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.
Page 133 Check SiBE06-514A Service Diagnosis...
Page 134: Part 7 Removal Procedure
SiBE06-514A Part 7 Removal Procedure 1. Indoor Unit...................126 1.1 Removal of the Air Filter / Front Panel ..........126 1.2 Removal of the Horizontal Blade............129 1.3 Removal of the Electrical Box ..............130 1.4 Removal of the PCB................133 1.5 Removal of the Heat Exchanger ............135 1.6 Removal of the Fan Rotor / Fan Motor..........137 2.
Page 135: Indoor Unit
Indoor Unit SiBE06-514A 1. Indoor Unit Removal of the Air Filter Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Appearance Operation panel Enlarged illustration shows operation panel section.
Page 136 SiBE06-514A Indoor Unit Step Procedure Points Press down the two hooks located at left and right side upper parts of the air filter, then bend slightly the air filter to remove it. Unhook the chain. Removal Procedure...
Page 137 Indoor Unit SiBE06-514A Step Procedure Points Undo the three hooks on the bottom of the front panel. Loosen the four screws to take out the front grille. Mounting screw M4 × 16 Removal Procedure...
Page 138: Removal Of The Horizontal Blade
SiBE06-514A Indoor Unit Removal of the Horizontal Blade Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Open the horizontal blade. Undo the supporting bracket at the center position.
Page 139: Removal Of The Electrical Box
Indoor Unit SiBE06-514A Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Set the horizontal blade in horizontal position to take out the front grille toward yourself.
Page 140 SiBE06-514A Indoor Unit Step Procedure Points Remove the room temperature thermistor. Remove the heat exchanger thermistor. Be sure not to drop the thermistor retaining spring Loosen the two screws Mounting screw M4 × 8 to remove the drip proof plate. Removal Procedure...
Page 141 Indoor Unit SiBE06-514A Step Procedure Points To remove the Mounting screw M4 × 16 electrical box, loosen the two fixing screws and pull out the box forward. The figure shows parts in the electrical box. Removal Procedure...
Page 142: Removal Of The Pcb
SiBE06-514A Indoor Unit Removal of the Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Loosen the fixing screw to remove PCBs from the electrical box. Display PCB The figure shows the control PCB (indoor...
Page 143 Indoor Unit SiBE06-514A Step Procedure Points The figure shows the power supply PCB (indoor unit). SW2-1 : unused SW2-2 : unused SW2-3 : unused SW2-4 : OFF - initial set ON - limit upward air flow The figure shows the service PCB.
Page 144: Removal Of The Heat Exchanger
SiBE06-514A Indoor Unit Removal of the Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Conduct pump-down Mounting screw M4 × 16 operation and check that gas has been purged completely before starting service work.
Page 145 Indoor Unit SiBE06-514A Step Procedure Points Loosen the fixing screw Mounting screw M4 × 16 to remove the pipe retaining plate of the heat exchanger. Push the pipe retaining plate backward to undo the hook, then open the retaining plate using straight edge of screw- driver to remove the plate.
Page 146: Removal Of The Fan Rotor / Fan Motor
SiBE06-514A Indoor Unit Removal of the Fan Rotor / Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points For removal of the drain pan, disconnect the drain hose, then loosen the two screws located at left and right...
Page 147 Indoor Unit SiBE06-514A Step Procedure Points Loosen the six screws Short lead wire: for the upper (three for the upper fan motor side motor and three Long lead wire: for the for the bottom one) to bottom fan motor remove the fan motors. Mounting screw M4 ×...
Page 148: Outdoor Unit
SiBE06-514A Outdoor Unit 2. Outdoor Unit Removal of Panels Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step 1. Features Take care not to cut your finger by the fins of the heat exchanger.
Page 149 Outdoor Unit SiBE06-514A Step Procedure Points 2. Remove the panels. Loosen the 3 screws (front, right, left) and lift panel. Remove the drip proof plate. Disconnect the The fan motor is united with connector for fan motor the front panel. (S70).
Page 150 SiBE06-514A Outdoor Unit Step Procedure Points Undo the hooks. The front panel has 4 hooks. Pull and remove the The fan motor is united with front panel. the front panel. 3. Remove the fan motor. The screw has reverse winding. Unscrew the washer- fitted nut (M10) of the propeller fan with a...
Page 151 Outdoor Unit SiBE06-514A Step Procedure Points Loosen the 2 screws and lift the bell mouth to undo the hooks. Remove the bell mouth. Loosen the fixing hooks Put the lead wire through the and release the lead back of the motor when wire.
Page 152 SiBE06-514A Outdoor Unit Step Procedure Points Loosen the 4 screws to M4×16 remove the motor. DC fan motor Loosen the 2 screws to remove the fan motor fixing frame. Removal Procedure...
Page 153 Outdoor Unit SiBE06-514A Step Procedure Points 4. Remove the right side panel. Loosen the 2 screws on the rear side. Loosen the 3 screws on the right side. Loosen the screw and lift the connection port to remove. Removal Procedure...
Page 154 SiBE06-514A Outdoor Unit Step Procedure Points When reassembling, make sure to fit the hook. Removal Procedure...
Page 155: Removal Of Electrical Box
Outdoor Unit SiBE06-514A Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel. Disconnect the connector for fan motor. 1. Remove the electrical box.
Page 156 SiBE06-514A Outdoor Unit Step Procedure Points Release the discharge Pay attention so as not to pipe thermistor. lose the clip for thermistor. Release the heat Pay attention so as not to exchanger thermistor. lose the clip. Lift and remove the electrical box.
Page 157: Removal Of Reactor And Partition Plate
Outdoor Unit SiBE06-514A Removal of Reactor Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. Remove the electrical box. 1. Remove the reactor. Loosen the screw.
Page 158 SiBE06-514A Outdoor Unit Step Procedure Points The partition plate has a hook on the lower side. Lift and pull the partition plate to remove. When reassembling, fit the lower hook into the bottom frame. Removal Procedure...
Page 159: Removal Of Sound Blanket
Outdoor Unit SiBE06-514A Removal of Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. Remove the electrical box. 1. Remove the sound blanket.
Page 160 SiBE06-514A Outdoor Unit Step Procedure Points Pull the sound blanket Since the piping ports on the (inner) out. sound blanket are torn easily, remove the blanket carefully. Pull the sound blanket (bottom) out. Removal Procedure...
Page 161: Removal Of Four Way Valve
Outdoor Unit SiBE06-514A Removal of Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the peripheries. Remove the four way valve and the sheets of putty so as not to burn them.
Page 162 SiBE06-514A Outdoor Unit Step Procedure Points Remove the sheets of putty. Cut the pipe with a tube cutter. Heat up the brazed part Provide a protective sheet or and withdraw the piping a steel plate so that the with pliers. brazing flame cannot influence peripheries.
Page 163: Removal Of Compressor
Outdoor Unit SiBE06-514A Removal of Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the compressor. Unscrew the nut of the compressor. Warning Ventilate when refrigerant leaks during the work.
Page 164 SiBE06-514A Outdoor Unit Step Procedure Points Heat up the brazed part of the suction side and disconnect. Lift the compressor up and remove it. Removal Procedure...
Page 165: Removal Of Pcb
Outdoor Unit SiBE06-514A Removal of Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the PCB. You can remove the PCB when you disconnect the Feature of the PCB read wires on the terminal board without removing the...
Page 166 SiBE06-514A Outdoor Unit Step Procedure Points Loosen the 4 screws. Undo the 3 hooks on the upper side. Lift and pull out the PCB. Removal Procedure...
Page 167 Outdoor Unit SiBE06-514A Step Procedure Points Feature of the PCB See page 15 for detail. S70: fan motor S80: four way valve S90: thermistor (outdoor air, heat exchanger, discharge pipe) Removal Procedure...
Page 168: Part 8 Others
SiBE06-514A Part 8 Others 1. Others ....................160 1.1 Test Run from the Remote Controller ..........160 1.2 Jumper Settings ...................161 Others...
Page 169: Others
Others SiBE06-514A 1. Others Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.
Page 170: Jumper Settings
SiBE06-514A Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit 1) Open the front grille, remove the four screws and dismount the front panel.
Page 171 Others SiBE06-514A Others...
Page 172: Part 9 Appendix
SiBE06-514A Part 9 Appendix 1. Piping Diagrams..................164 1.1 Indoor Units ..................164 1.2 Outdoor Units ..................165 2. Wiring Diagrams..................167 2.1 Indoor Units ..................167 2.2 Outdoor Units ..................167 Appendix...
Page 173: Piping Diagrams
Piping Diagrams SiBE06-514A 1. Piping Diagrams Indoor Units FVKS25/35BVMB, FVKS25/35BAVMB INDOOR UNIT HEAT EXCHANGER THERMISTOR CROSS FLOW FAN FAN MOTOR ON HEAT EXCH. 7.0CuT 7.0CuT CROSS FLOW FAN FAN MOTOR FIELD PIPING (6.4CuT) SINGLE UNION JOINT 9.5CuT FIELD PIPING (9.5CuT) SINGLE UNION JOINT REFRIGERANT FLOW COOLING...
Page 174: Outdoor Units
SiBE06-514A Piping Diagrams Outdoor Units 1.2.1 Cooling Only RKS25DVMB, RKS25D2VMB, RKS25D3VMB OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 7.0CuT 6.4CuT 6.4CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER FOUR WAY FIELD PIPING...
Page 175 Piping Diagrams SiBE06-514A 1.2.2 Heat Pump RXS25DVMB, RXS25D2VMB, RXS25D3VMB OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 7.0CuT 6.4CuT 6.4CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER FOUR WAY VALVE FIELD PIPING ON : HEATING...
Page 176: Wiring Diagrams
SiBE06-514A Wiring Diagrams 2. Wiring Diagrams Indoor Units FVKS25/35BVMB, FVXS25/35BVMB, FVKS25/35BAVMB, FVXS25/35BAVMB 3.15A PCB3 → S2W ( 4 ) outdoor TRANSMISSION PCB2 FIELD WIRING. WIRELESS CIRCUIT REMOTE PCB1 CONTROLLER PCB4 : PROTECTIVE EARTH : FUSE S201 S202 H1P , H2P , H3P : PILOT LAMP : LIMIT SWITCH SIGNAL M1F , M2F...
Page 177 Wiring Diagrams SiBE06-514A Appendix...
Page 178: Index
SiBE06-514A Index Numerics compressor ............154 compressor lock ............ 95 00 ................83 compressor overload ..........94 3-minute standby ............37 compressor protection function ......37 compressor system sensor abnormality ....103 connectors ............12, 14 A1 ................84 control PCB (indoor unit) ....... 13, 133 A5 ................85 control PCB (outdoor unit) ........
Page 179 SiBE06-514A L3 ..............108 hot start function ............ 29 L4 ..............110 L5 ..............112 P4 ..............106 indoor heat exchanger thermistor ....31, 32 U0 ..............114 indoor unit PCB abnormality ......... 84 U2 ..............116 input current control ..........38 U4 ..............91 input over current detection ........97 UA ..............92 installation condition check .........
Page 180 SiBE06-514A S80 ............14, 146, 158 S90 ..............14, 158 P4 .................106 safety precautions ..........51 panels ..............139 self-diagnosis digital display ........30 partition plate ............148 sensor malfunction detection ........ 45 PCB ..............133, 156 service check function ........... 80 photocatalytic deodorizing filter ......29 service PCB ............
Page 181 SiBE06-514A Index...
Page 182: Drawings & Flow Charts
SiBE06-514A Drawings & Flow Charts insufficient gas ............ 114 insufficient gas control ........... 45 air flow selection ............21 inverter features ............ 19 ARC433A ...............80 inverter POWERFUL operation ......28 automatic air flow control ........22 inverter units refrigerant system check ....122 automatic operation ..........24 auto-swing ..............20 jumper settings ............
Page 183 SiBE06-514A service check function ..........80 shutter drive motor / shutter limit switch abnormality .....90 signal receiver PCB ..........13 signal transmission error (between indoor and outdoor units) ...............91 target discharge pipe temperature control .....44 thermistor or related abnormality (indoor unit) ..89 thermistor or related abnormality (outdoor unit) ...106 thermistor resistance check .........120 thermostat control ..........25...
Page 184 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. 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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