Daikin FTKS20CVMB Service Manual

Inverter pair wall mounted type c-series

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Service manual (246 pages)

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Inverter Pair

Wall Mounted Type C-Series

[Applied Models]

Inverter Pair : Cooling Only

Inverter Pair : Heat Pump

SiBE04-401

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Summary of Contents for Daikin FTKS20CVMB

Page 1 SiBE04-401 Inverter Pair Wall Mounted Type C-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump...
Page 2 SiBE04-401 Inverter Pair Inverter Pair Inverter Pair Inverter Pair C-Series C-Series C-Series C-Series Cooling Only Indoor Unit FTKS20CVMB(9) ATKS20CVMB(9) FTN20CVMB9 FTKS25CVMB(9)(8) ATKS25CVMB(9) FTN25CVMB9 FTKS35CVMB(9)(8) ATKS35CVMB(9) FTN35CVMB9 Outdoor Unit RKS20CVMB ARKS20CVMB RKS25CVMB ARKS25CVMB RKS35CVMB ARKS35CVMB RKH20CVMB9 ARKH20CVMB9 RN20CVMB9 RKH25CVMB9 ARKH25CVMB9 RN25CVMB9...
Page 3: Table Of Contents
SiBE04-401 1. Introduction .....................v 1.1 Safety Cautions ..................v Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 High Grade Models ..................2 1.2 Standard Grade Models ................4 1.3 Non-lnverter Models .................6 Part 2 Specifications ..............7 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................13 Part 3 Printed Circuit Board Connector Wiring Diagram ...
Page 4 SiBE04-401 3.15 Facility Setting Jumper (cooling at low outdoor temperature) ....57 Part 5 System Configuration............59 1. System Configuration................60 2. Instruction....................61 2.1 Safety precautions..................61 2.2 Names of parts ..................63 2.3 Preparation before Operation..............66 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........69 2.5 Adjusting the Air Flow Direction .............71 2.6 POWERFUL Operation ................73 2.7 OUTDOOR UNIT SILENT Operation ............74...
Page 5 SiBE04-401 Part 7 Removal Procedure ............133 1. Indoor Unit...................134 1.1 Removal of Air Filter................134 1.2 Removal of Front Grille ................137 1.3 Removal of Horizontal Blade and Vertical Blade........140 1.4 Removal of Electrical Box, PCB and Swing Motor .......142 1.5 Removal of Heat Exchanger ..............148 1.6 Install of Drain Plug ................151 1.7 Removal of Fan Rotor and Fan Motor..........152 2.
Page 6: Introduction
SiBE04-401 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 SiBE04-401 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
SiBE04-401 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 SiBE04-401 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
SiBE04-401 Part 1 Part 1 Part 1 Part 1 List of Functions List of Functions List of Functions List of Functions 1. List of Functions ..................2 1.1 High Grade Models ..................2 1.2 Standard Grade Models ................4 1.3 Non-lnverter Models .................6 List of Functions...
Page 11: List Of Functions
List of Functions SiBE04-401 1. List of Functions High Grade Models Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Operation Limit for Cooling (°CDB) # 1 Virustatic Functions Basic –15 Function Operation Limit for Heating (°CWB) —...
Page 12 SiBE04-401 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Operation Limit for Cooling (°CDB) # 1 Virustatic Functions Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 13: Standard Grade Models
List of Functions SiBE04-401 Standard Grade Models Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — Virustatic Functions Operation Limit for Cooling (°CDB) Basic –10 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 14 SiBE04-401 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — Virustatic Functions Operation Limit for Cooling (°CDB) Basic –10 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — —...
Page 15: Non-Lnverter Models
List of Functions SiBE04-401 Non-lnverter Models Category Functions Category Functions Air Purifying Filter with Bacteriostatic, Inverter (with Inverter Power Control) — — — — Virustatic Functions Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — — Basic Function –10 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 16: Part 2 Specifications
SiBE04-401 Part 2 Part 2 Part 2 Part 2 Specifications Specifications Specifications Specifications 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................13 Specifications...
Page 17: Specifications
Specifications SiBE04-401 1. Specifications Cooling Only 1.1.1 High Grade Models 230V, 50Hz Indoor Units FTKS20CVMB(9) FTKS25CVMB(9)(8) FTKS35CVMB(9)(8) Models Outdoor Units RKS20CVMB RKS25CVMB RKS35CVMB 2.0 (1.3~3.0) 2.5 (1.3~3.0) 3.4 (1.4~3.8) Capacity Btu/h 6,800 (4,450~10,250) 8,550 (4,450~10,250) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h...
Page 18 SiBE04-401 Specifications 230V, 50Hz Indoor Units ATKS20CVMB(9) ATKS25CVMB(9) ATKS35CVMB(9) Models Outdoor Units ARKS20CVMB ARKS25CVMB ARKS35CVMB 2.0 (1.3~3.0) 2.5 (1.3~3.0) 3.4 (1.4~3.8) Capacity Btu/h 6,800 (4,450~10,250) 8,550 (4,450~10,250) 11,600 (4,750~12,950) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,580) 2,150 (1,120~2,580) 2,920 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 500 (300~980)
Page 19 Specifications SiBE04-401 1.1.2 Standard Grade Models 230V, 50Hz Indoor Units FTKS20CVMB(9) FTKS25CVMB(9)(8) FTKS35CVMB(9)(8) Models Outdoor Units RKH20CVMB9 RKH25CVMB9 RKH35CVMB9 2.0 (1.3~2.6) 2.25 (1.3~3.0) 3.15 (1.4~3.8) Capacity Btu/h 6,800 (4,450~8,850) 7,650 (4,450~10,250) 10,750 (4,750~12,950) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 1,940 (1,120~2,580)
Page 20 SiBE04-401 Specifications 230V, 50Hz Indoor Units ATKS20CVMB(9) ATKS25CVMB(9) ATKS35CVMB(9) Models Outdoor Units ARKH20CVMB9 ARKH25CVMB9 ARKH35CVMB9 2.0 (1.3~2.6) 2.25 (1.3~3.0) 3.15 (1.4~3.8) Capacity Btu/h 6,800 (4,450~8,850) 7,650 (4,450~10,250) 10,750 (4,750~12,950) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 1,940 (1,120~2,580) 2,710 (1,200~3,270) Moisture Removal Running Current (Rated) Power Consumption 620 (430~945)
Page 21 Specifications SiBE04-401 1.1.3 Non-lnverter Models 230V, 50Hz Indoor Units FTN20CVMB9 FTN25CVMB9 FTN35CVMB9 Models Outdoor Units RN20CVMB9 RN25CVMB9 RN35CVMB9 2.25 3.15 Capacity Btu/h 6,800 7,650 10,750 Rated (Min.~Max.) kcal/h 1,720 1,940 2,710 Moisture Removal Running Current (Rated) Power Consumption 1,045 Rated (Min.~Max.) Power Factor 81.7 82.3...
Page 22: Heat Pump
SiBE04-401 Specifications Heat Pump 1.2.1 High Grade Models 230V, 50Hz Indoor Units FTXS20CVMB(9) FTXS25CVMB(9)(8) Models RXS20CVMB RXS25CVMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~3.0) 2.7 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 6,800 (4,450~10,250) 9,200 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,580)
Page 23 Specifications SiBE04-401 230V, 50Hz Indoor Units FTXS35CVMB(9)(8) Models RXS35CVMB Outdoor Units Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 13,650 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) Moisture Removal — Running Current (Rated) Power Consumption 1,060 (300~1,300) 1,170 (310~1,590) Rated (Min.~Max.) Power Factor...
Page 24 SiBE04-401 Specifications 230V, 50Hz Indoor Units ATXS20CVMB(9) ATXS25CVMB(9) Models ARXS20CVMB ARXS25CVMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~3.0) 2.7 (1.3~4.5) 2.5 (1.3~3.0) 3.4 (1.3~4.5) Capacity Btu/h 6,800 (4,450~10,250) 9,200 (4,450~15,350) 8,550 (4,450~10,250) 11,600 (4,450~15,350) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,580) 2,320 (1,120~3,870) 2,150 (1,120~2,580) 2,920 (1,120~3,870)
Page 25 Specifications SiBE04-401 230V, 50Hz Indoor Units ATXS35CVMB(9) Models ARXS35CVMB Outdoor Units Cooling Heating 3.4 (1.4~3.8) 4.0 (1.4~5.0) Capacity Btu/h 11,600 (4,750~12,950) 13,650 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,920 (1,200~3,270) 3,440 (1,200~4,300) Moisture Removal — Running Current (Rated) Power Consumption 1,060 (300~1,300) 1,170 (310~1,590) Rated (Min.~Max.) Power Factor...
Page 26 SiBE04-401 Specifications 1.2.2 Standard Grade Models 230V, 50Hz Indoor Units FTXS20CVMB(9) FTXS25CVMB(9)(8) Models RXH20CVMB9 RXH25CVMB9 Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.6 (1.3~4.0) 2.25 (1.3~3.0) 2.85 (1.3~4.5) Capacity Btu/h 6,800 (4,450~8,850) 8,850 (4,450~13,650) 7,650 (4,450~10,250) 9,700 (4,450~15,350) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,240 (1,120~3,440)
Page 27 Specifications SiBE04-401 230V, 50Hz Indoor Units FTXS35CVMB(9)(8) Models RXH35CVMB9 Outdoor Units Cooling Heating 3.15 (1.4~3.8) 3.6 (1.4~5.0) Capacity Btu/h 10,750 (4,750~12,950) 12,300 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,710 (1,200~3,270) 3,100 (1,200~4,300) Moisture Removal — Running Current (Rated) Power Consumption 1,045 (460~1,425) 1,055 (405~1,900) Rated (Min.~Max.) Power Factor...
Page 28 SiBE04-401 Specifications 230V, 50Hz Indoor Units ATXS20CVMB(9) ATXS25CVMB(9) Models ARXH20CVMB9 ARXH25CVMB9 Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.6 (1.3~4.0) 2.25 (1.3~3.0) 2.85 (1.3~4.5) Capacity Btu/h 6,800 (4,450~8,850) 8,850 (4,450~13,650) 7,650 (4,450~10,250) 9,700 (4,450~15,350) Rated (Min.~Max.) kcal/h 1,720 (1,120~2,240) 2,240 (1,120~3,440) 1,940 (1,120~2,580) 2,450 (1,120~3,870)
Page 29 Specifications SiBE04-401 230V, 50Hz Indoor Units ATXS35CVMB(9) Models ARXH35CVMB9 Outdoor Units Cooling Heating 3.15 (1.4~3.8) 3.6 (1.4~5.0) Capacity Btu/h 10,750 (4,750~12,950) 12,300 (4,750~17,050) Rated (Min.~Max.) kcal/h 2,710 (1,200~3,270) 3,100 (1,200~4,300) Moisture Removal — Running Current (Rated) Power Consumption 1,045 (460~1,425) 1,055 (405~1,900) Rated (Min.~Max.) Power Factor...
Page 30 SiBE04-401 Specifications 1.2.3 Non-lnverter Models 230V, 50Hz Indoor Units FTYN20CVMB9 FTYN25CVMB9 Models RYN20CVMB9 RYN25CVMB9 Outdoor Units Cooling Heating Cooling Heating 2.25 2.85 Capacity Btu/h 6,800 8,850 7,650 9,700 Rated (Min.~Max.) kcal/h 1,720 2,240 1,940 2,450 Moisture Removal — — Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor...
Page 31 Specifications SiBE04-401 230V, 50Hz Indoor Units FTYN35CVMB9 Models RYN35CVMB9 Outdoor Units Cooling Heating 3.15 Capacity Btu/h 10,750 12,300 Rated (Min.~Max.) kcal/h 2,710 3,100 Moisture Removal — Running Current (Rated) Power Consumption 1,045 1,055 Rated (Min.~Max.) Power Factor 92.7 93.6 COP (Rated) 3.01 3.41 φ...
Page 32: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE04-401 Part 3 Part 3 Part 3 Part 3 Printed Circuit Board Printed Circuit Board Printed Circuit Board Printed Circuit Board Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........24 1.1 Indoor Unit....................24 1.2 Outdoor Unit / RK(X)S-C, ARK(X)S-C............26 1.3 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C ........28...
Page 33: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiBE04-401 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors Connector for fan motor Connector for swing motor (horizontal blades) Connector for fan motor (Hall IC) Connector for centralized control (HA) Connector for signal receiver PCB S27, S36 Connector for control PCB Connector for heat exchanger thermistor...
Page 34 SiBE04-401 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB PCB(2): Signal Receiver PCB Signal Receiver PCB Control PCB LED1 LED2 LED3 RTH1 (R4011) PCB(3): INTELLIGENT EYE sensor PCB (R3321) Printed Circuit Board Connector Wiring Diagram...
Page 35: Outdoor Unit / Rk(X)S-C, Ark(X)S-C
Printed Circuit Board Connector Wiring Diagram SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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 36 SiBE04-401 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (outdoor unit) LEDA S90 FU2(3.15A) (R3322) FU1(3.15A) PCB(2): Filter PCB FU3(20A) (R3323) Printed Circuit Board Connector Wiring Diagram...
Page 37: Outdoor Unit / Rk(X)H-C, Ark(X)H-C, R(Y)N-C
Printed Circuit Board Connector Wiring Diagram SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Connectors Connector for electronic expansion valve Connector for fan motor Connector for four way valve Connector for thermistors (outdoor air, heat exchanger, discharge pipe) Note: Other designations Fuse (3.15A) Fuse...
Page 38: Part 4 Function And Control
SiBE04-401 Part 4 Part 4 Part 4 Part 4 Function and Control Function and Control Function and Control Function and Control 1. Main Functions..................30 1.1 Frequency Principle................30 1.2 Power-Airflow Dual Flaps, Wide-Angle Louvres and Auto-Swing ..32 1.3 Fan Speed Control for Indoor Units............33 1.4 Programme Dry Function ...............34 1.5 Automatic Operation................35 1.6 NIGHT SET Mode ..................36...
Page 39: Main Functions
Main Functions SiBE04-401 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 40 SiBE04-401 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 41: Power-Airflow Dual Flaps, Wide-Angle Louvres And Auto-Swing
Main Functions SiBE04-401 Power-Airflow Dual Flaps, Wide-Angle Louvres and Auto-Swing Power-Airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.
Page 42: Fan Speed Control For Indoor Units
SiBE04-401 Main Functions 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 99.
Page 43: Programme Dry Function
Main Functions SiBE04-401 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 44: Automatic Operation
SiBE04-401 Main Functions 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 45: Night Set Mode
Main Functions SiBE04-401 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 lowers the temperature setting slightly in the case of cooling, or raises it slightly in the case of heating, for economical operations.
Page 46: Intelligent Eye
SiBE04-401 Main Functions INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1.
Page 47 Main Functions SiBE04-401 Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Page 48: Home Leave Operation
SiBE04-401 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 49: Inverter Powerful Operation
Main Functions SiBE04-401 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 50: Other Functions
SiBE04-401 Main Functions 1.10 Other Functions 1.10.1 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 51: Function Of Main Structural Parts
Function of Main Structural Parts SiBE04-401 2. Function of Main Structural Parts Function of Thermistor 2.1.1 Heat Pump Model Four way valve Compressor (R3305) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Set a target discharge temperature depending on the outdoor and indoor heat exchanger Exchanger temperature.
Page 52: Cooling Only Model
SiBE04-401 Function of Main Structural Parts 2.1.2 Cooling Only Model Compressor (R2828) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Set a target discharge temperature depending on the outdoor and indoor heat exchanger Exchanger temperature.
Page 53: Control Specification
Control Specification SiBE04-401 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 54: Frequency Control
SiBE04-401 Control Specification 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 55 Control Specification SiBE04-401 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. 4. Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency. Indoor Frequency Command ( ∆...
Page 56: Controls At Mode Changing / Start-Up
SiBE04-401 Control Specification 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 (only for heat pump model) from the discharge pipe temperature. Detail Preheating ON Condition When the discharge pipe temperature is below 10ºC, inverter in open phase operation starts.
Page 57: Discharge Pipe Control
Control Specification SiBE04-401 3.3.4 3-minutes 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 58: Input Current Control
SiBE04-401 Control Specification Input Current Control Outline Detect an input current by the CT 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 59: Heating Peak-Cut Control
Control Specification SiBE04-401 Heating Peak-cut Control Outline Heat Pump Only During heating operation, the signals being sent from the indoor unit allow the operating frequency limitation and prevent abnormal high pressure. (The signal from the indoor unit must be divided as follows.) Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec.
Page 60: Defrost Control
SiBE04-401 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 61: Electronic Expansion Valve Control
Control Specification SiBE04-401 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 62 SiBE04-401 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 63 Control Specification SiBE04-401 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 64: Malfunctions
SiBE04-401 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 65: Forced Operation Mode
Control Specification SiBE04-401 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 20°C higher than target value and the electronic expansion value opening is 450 pulses (max.), the adjustment is made for insufficient gas.
Page 66: Facility Setting Jumper (Cooling At Low Outdoor Temperature)
SiBE04-401 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 67 Control Specification SiBE04-401 Function and Control...
Page 68: Part 5 System Configuration
SiBE04-401 Part 5 Part 5 Part 5 Part 5 System Configuration System Configuration System Configuration System Configuration 1. System Configuration................60 2. Instruction....................61 2.1 Safety precautions..................61 2.2 Names of parts ..................63 2.3 Preparation before Operation..............66 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........69 2.5 Adjusting the Air Flow Direction .............71 2.6 POWERFUL Operation ................73 2.7 OUTDOOR UNIT SILENT Operation ............74...
Page 69: System Configuration
System Configuration SiBE04-401 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 70: 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 71: Installation Site
Instruction SiBE04-401 • 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 72: Names Of Parts
SiBE04-401 Instruction Names of parts I Indoor Unit System Configuration...
Page 73: I Outdoor Unit
Instruction SiBE04-401 I Outdoor Unit I I I I Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: (page 10.) • Push this switch once to start operation. 2. Air purifying filter with Push once again to stop it. photocatalytic deodorizing function: •...
Page 74: Remote Controller
SiBE04-401 Instruction I Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT SENSOR CANCEL TIMER < > ARC433A1, A2 1. Signal transmitter: • It selects the operation mode. • It sends signals to the indoor unit. (AUTO/DRY/COOL/HEAT/FAN) (page 10.) 2.
Page 75: Preparation Before Operation
Instruction SiBE04-401 Preparation before Operation I 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 I I I I About batteries •...
Page 76 SiBE04-401 Instruction I 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 77 Instruction SiBE04-401 I To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly HOME LEAVE ON/OFF increases or decreases the time display. TEMP POWERFUL 3.
Page 78: Auto · Dry · Cool · Heat · Fan Operation
SiBE04-401 Instruction 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. I To start operation 1.
Page 79 Instruction SiBE04-401 I 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 80: Adjusting The Air Flow Direction
SiBE04-401 Instruction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. I To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display will light up and the flaps will begin to swing. HOME LEAVE ON/OFF 2.
Page 81 Instruction SiBE04-401 I To adjust the vertical blades (louvers) Hold the knob and move the louvers. (You will find a knob on the left-side and the right-side blades.) Notes on flaps and louvers angles • When “ SWING button ” is selected, the flaps In DRY mode or COOL mode swinging range depends on the operation mode.
Page 82: Powerful Operation
SiBE04-401 Instruction 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 ON/OFF...
Page 83: Outdoor Unit Silent Operation
Instruction SiBE04-401 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 84: Home Leave Operation
SiBE04-401 Instruction HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. I To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. I To cancel HOME LEAVE 1, 2 HOME LEAVE...
Page 85 Instruction SiBE04-401 I 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 favor- ite set temperature and air flow rate.
Page 86: Intelligent Eye Operation
SiBE04-401 Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. I To start INTELLIGENT EYE operation 1. Press “SENSOR button”. I To cancel the HOME LEAVE ON/OFF INTELLIGENT EYE TEMP POWERFUL operation 2. Press “SENSOR button” again. MODE SWING [EX.]...
Page 87 Instruction SiBE04-401 I To adjust the angle of the INTELLIGENT EYE sensor • You can adjust the angle of the INTELLIGENT EYE sensor to increase the detection area. (Adjustable angle: 15° to right and left of centre) INTELLIGENT EYE 15˚ 15˚...
Page 88: Timer Operation
SiBE04-401 Instruction 2.10 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. I To use OFF TIMER opera- tion •...
Page 89 Instruction SiBE04-401 I 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 HOME LEAVE ON/OFF the point you like.
Page 90: Care And Cleaning
SiBE04-401 Instruction 2.11 Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units I Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. I Front grille 1. Open the front grille. •...
Page 91: I Air Filter
Instruction SiBE04-401 Filters 1. Open the front grille. (page 24) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter with Air purifying filter photocatalytic deodorizing function.
Page 92: Before A Long Idle Period
SiBE04-401 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 earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.
Page 93: Troubleshooting
Instruction SiBE04-401 2.12 Troubleshooting 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 94: Check Again
SiBE04-401 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 95: Disposal Requirements
Instruction SiBE04-401 Call the service shop immediately. WARNING I I I I 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 96: Fault Diagnosis
SiBE04-401 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 97 Instruction SiBE04-401 System Configuration...
Page 98: Part 6 Service Diagnosis
SiBE04-401 Part 6 Part 6 Part 6 Part 6 Service Diagnosis Service Diagnosis Service Diagnosis Service Diagnosis 1. Caution for Diagnosis................90 2. Problem Symptoms and Measures ............91 3. Service Check Function ................92 4. Troubleshooting ..................95 4.1 Error Codes and Description ..............95 4.2 Indoor Unit PCB Abnormality ..............96 4.3 Freeze-up Protection Control or High Pressure Control......97 4.4 Fan Motor (AC Motor) or Related Abnormality........99...
Page 99: Caution For Diagnosis
Caution for Diagnosis SiBE04-401 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 100: Problem Symptoms And Measures
SiBE04-401 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 101: Service Check Function
Service Check Function SiBE04-401 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 102 SiBE04-401 Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMPL,TEMPM, MODE) simultaneously. (R4086) The digit of the number of tens blinks. Try again from the start when the digit does not blink. (R4087) 2.
Page 103 Service Check Function SiBE04-401 5. Press the TEMP button. Press TEMPL or TEMPM and change the digit until you hear the sound of “beep”. (R4088) 6. Diagnose by the sound. “ pi ” : The both numbers of tens and units do not accord with the error code. “...
Page 104: Troubleshooting
SiBE04-401 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) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality Heat exchanger temperature thermistor abnormality Room temperature thermistor abnormality...
Page 105: Indoor Unit Pcb Abnormality
Troubleshooting SiBE04-401 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 Causes Faulty connector connection Troubleshooting...
Page 106: Freeze-Up Protection Control Or High Pressure Control
SiBE04-401 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 107 Troubleshooting SiBE04-401 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Refer to P.126 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 108: Fan Motor (Ac Motor) Or Related Abnormality
SiBE04-401 Troubleshooting Fan Motor (AC 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 HH tap under maximum fan motor rotation demand.
Page 109: Thermistor Or Related Abnormality (Indoor Unit)
Troubleshooting SiBE04-401 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 110: Signal Transmission Error (Between Indoor And Outdoor Unit)
SiBE04-401 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 111: Ol Activation (Compressor Overload)
Troubleshooting SiBE04-401 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 112: Compressor Lock
SiBE04-401 Troubleshooting Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. 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 113: Dc Fan Lock
Troubleshooting SiBE04-401 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 Malfunction detected by the Hall IC. 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 114: Input Over Current Detection
SiBE04-401 Troubleshooting 4.10 Input Over Current Detection Remote Controller Display Method of An input over-current is detected by checking the input current value with the compressor Malfunction running. Detection Malfunction The following current with the compressor running continues for 2.5 seconds. Cooling Heating: Above 12A Decision...
Page 115: Four Way Valve Abnormality
Troubleshooting SiBE04-401 4.11 Four Way Valve Abnormality Remote Controller Display Method of The indoor air temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor Malfunction temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode.
Page 116 SiBE04-401 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.5 Refer to P.125 Four way valve coil Correct. disconnected (loose)? Check No.6 Refer to P.126 Reconnect. Harness out of connector? Check No.11 Refer to P.129...
Page 117: Discharge Pipe Temperature Control
Troubleshooting SiBE04-401 4.12 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction If a stop takes place 4 times successively due to abnormal discharge pipe temperature, the system will be shut down.
Page 118: High Pressure Control In Cooling
SiBE04-401 Troubleshooting 4.13 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 Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
Page 119 Troubleshooting SiBE04-401 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.4 Refer to P.124 Check the installation space. Check No.6 Check No.7 Abnormal Installation condition Change the air outlet grille Refer to P.126 check position.
Page 120: Position Sensor Abnormality
SiBE04-401 Troubleshooting 4.14 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
Page 121: Dc Voltage / Current Sensor Abnormality
Troubleshooting SiBE04-401 4.15 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 Malfunction input current multiplied DC voltage and current. 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 122: Thermistor Or Related Abnormality (Outdoor Unit)
SiBE04-401 Troubleshooting 4.16 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. Malfunction [A thermistor error is detected by checking the temperature.] Detection Malfunction The thermistor input is above 4.96 V or below 0.04 V with the power on.
Page 123 Troubleshooting SiBE04-401 Be sure to turn off power switch before connect or disconnect connector, Troubleshooting Caution or parts damage may be occurred. Turn on the power again. Check No.6 Refer to P.126 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.
Page 124: Electrical Box Temperature Rise
SiBE04-401 Troubleshooting 4.17 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C(90°C ). Reset is made when the temperature drops below 70°C(80°C ).
Page 125 Troubleshooting SiBE04-401 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 WARNING Turn off the power and turn it on Refer to P.126 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises «...
Page 126: Radiation Fin Temperature Rise
SiBE04-401 Troubleshooting 4.18 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above 90°C (100°C for (A)RK(X)H, R(Y)N models).
Page 127 Troubleshooting SiBE04-401 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Turn off the power and turn it on Refer to P.126 again to get the system started. Check No.7 Refer to P.127 Error displayed again?
Page 128: Output Over Current Detection
SiBE04-401 Troubleshooting 4.19 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 129 Troubleshooting SiBE04-401 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.7 ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and Refer to P.127 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.
Page 130: Insufficient Gas
SiBE04-401 Troubleshooting 4.20 Insufficient Gas Remote Controller Display Method of Gas shortage detection I : A gas shortage is detected by checking the compressor running Malfunction frequency. Gas shortage detection II : A gas shortage is detected by checking the difference between Detection indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
Page 131 Troubleshooting SiBE04-401 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.4 Refer to P.124 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor Check No.6 * Room temperature thermistor * Outdoor air thermistor...
Page 132: Over-Voltage Detection
SiBE04-401 Troubleshooting 4.21 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 133: Check
Check SiBE04-401 5. Check How to Check 5.1.1 Electronic Expansion Valve Check Check No.4 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.
Page 134 SiBE04-401 Check 5.1.2 Four Way Valve Performance Check Check No.5 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 135: Thermistor Resistance Check
Check SiBE04-401 5.1.3 Thermistor Resistance Check Check No.6 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 136: Installation Condition Check
SiBE04-401 Check 5.1.4 Installation Condition Check Check No.7 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 137: Outdoor Unit Fan System Check
Check SiBE04-401 5.1.6 Outdoor Unit Fan System Check Check No.9 DC motor — (A)RK(X)S models 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.
Page 138: Power Supply Waveforms Check
SiBE04-401 Check 5.1.7 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...
Page 139: Power Transistor Check
Check SiBE04-401 5.1.9 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 140: Hall Ic Check
SiBE04-401 Check 5.1.11 Hall IC Check Check No.16 1. Check the connector connection. 2. With the power ON, operation OFF, and the connector connected, check the following. ∗ Output voltage of about 5 V between pins 1 and 3. ∗ Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.
Page 141 Check SiBE04-401 Service Diagnosis...
Page 142: Part 7 Removal Procedure
SiBE04-401 Part 7 Part 7 Part 7 Part 7 Removal Procedure Removal Procedure Removal Procedure Removal Procedure 1. Indoor Unit...................134 1.1 Removal of Air Filter................134 1.2 Removal of Front Grille ................137 1.3 Removal of Horizontal Blade and Vertical Blade........140 1.4 Removal of Electrical Box, PCB and Swing Motor .......142 1.5 Removal of Heat Exchanger ..............148 1.6 Install of Drain Plug ................151 1.7 Removal of Fan Rotor and Fan Motor..........152...
Page 143: Indoor Unit
Indoor Unit SiBE04-401 1. Indoor Unit Removal of Air Filter Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.. Step Procedure Points 1. External features If ON/OFF button is kept pushing for 5 seconds, a forced cooling operation will be carried out for approx.
Page 144 SiBE04-401 Indoor Unit Step Procedure Points 3. Opening and shutting front panel Hook a finger onto the Support the front panel by one projection part provided hand, while remove the rotation on the both sides of the axis at the upper center by the unit’s panel and open other hand.
Page 145 Indoor Unit SiBE04-401 Step Procedure Points When restoring the air filter, make sure that the projection parts on the panel are in the guide groove, and then shut the panel. Removal Procedure...
Page 146: Removal Of Front Grille
SiBE04-401 Indoor Unit Removal of Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Opening and closing of service cover Remove a service cover mounting screw. Open service cover upward A switch for field setting is...
Page 147: Removal Of Front Grille
Indoor Unit SiBE04-401 Step Procedure Points 2. Removal of front grille assembly. Remove the two Screw stoppers inside the screws, in the right and flap which were equipped in the left, which fix the the existing models are not main body with the front provided.
Page 148 SiBE04-401 Indoor Unit Step Procedure Points The front grille can be When restoring the grille, removed in a manner to Make sure whether each pull out the upper part hook is set as it was. forward and lift up the lower part.
Page 149: Removal Of Horizontal Blade And Vertical Blade
Indoor Unit SiBE04-401 Removal of Horizontal Blade and Vertical Blade Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove horizontal blade. Lift horizontal blade to Screw stoppers inside the open position.
Page 150 SiBE04-401 Indoor Unit Step Procedure Points For restoring. 1. Since the key pattern hook is provided on the left side, insert the edge of the blade to the tip while rotating it. 2. Restore the two fixed parts of the horizontal blade onto the hook.
Page 151: Removal Of Electrical Box, Pcb And Swing Motor
Indoor Unit SiBE04-401 Removal of Electrical Box, PCB and Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove front grill. 1. Remove electrical box. Disconnect the connection wires.
Page 152 SiBE04-401 Indoor Unit Step Procedure Points Remove a screw on the The electrical box can be terminal board. removed instead of disengaging the terminal board. Remove a screw on the electrical box. Removal Procedure...
Page 153 Indoor Unit SiBE04-401 Step Procedure Points Pull up the electrical A hook is provided on the box forward to remove. behind. Removal Procedure...
Page 154 SiBE04-401 Indoor Unit Step Procedure Points 2. Removal of Remove the shelter. Disengage the front plate of the electrical box. Disengage the knobs by pushing the two hooks at the top and the bottom. Sliding to the left, the front part of the electrical box can be removed.
Page 155 Indoor Unit SiBE04-401 Step Procedure Points Disengage the four knobs on the back of the signal receiver PCB. Signal receiver PCB Removal Procedure...
Page 156 SiBE04-401 Indoor Unit Step Procedure Points Control PCB. The control integrated with the power supply PCB. Glass tabu fuse 3.15A 250V (HA terminal) S7(Fan motor) S6(Swing motor) (Address) (Heat exchanger thermistor) (R2541) 3. Remove swing motor assembly. To remove swing motor assembly, remove two screws.
Page 157: Removal Of Heat Exchanger
Indoor Unit SiBE04-401 Removal of 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 Warning! operation. If gas leaks, repair the leak Remove the installation location, then connect all frame from the mounting refrigerant from the unit.
Page 158 SiBE04-401 Indoor Unit Step Procedure Points Disengage the hooks of the pipe retainer on the back. Pull auxiliary pipe Be careful to prevent pipe forward to an angle of deformation. 10 to 20 degrees. Disengage hooks located right and left side, and pull heat exchanger forward.
Page 159 Indoor Unit SiBE04-401 Step Procedure Points Lift and remove heat exchanger. Caution! When removing or re- installing heat exchanger, be sure to wear protective gloves or wrap heat exchanger with cloths. (Fins can cut fingers.) Removal Procedure...
Page 160: Install Of Drain Plug
SiBE04-401 Indoor Unit Install of Drain Plug Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect drain hose. The drain pan is integrated with the bottom plate. Pull out the drain plug in the left on the drain pan by hand.
Page 161: Removal Of Fan Rotor And Fan Motor
Indoor Unit SiBE04-401 Removal of 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 Remove heat exchanger. To remove right side plate, remove three screws.
Page 162 SiBE04-401 Indoor Unit Step Procedure Points Disengage hook. Loosen the hexagon head set screw on the fan rotor. Removal Procedure...
Page 163 Indoor Unit SiBE04-401 Step Procedure Points Remove the motor and fan rotor. Remove a screw on the left side plate. Removal Procedure...
Page 164 SiBE04-401 Indoor Unit Step Procedure Points Disengage a hook from the backward. Since the fan bearing is made of rubber, push it strongly off from the inside. The bearing can be removed just as the left side plate is attached with. Removal Procedure...
Page 165: Outdoor Unit / Rk(X)S-C, Ark(X)S-C
Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 2. Outdoor Unit / RK(X)S-C, ARK(X)S-C Removal of Panels and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1.
Page 166 SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C Step Procedure Points 2. Remove the panels. Loosen the 3 screws (front, right, left) and lift the top panel. Remove the drip proof plate. Disconnect the The fan motor is united with connector for fan motor the front panel.
Page 167 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 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.
Page 168 SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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 169 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 Step Procedure Points Loosen the 4 screws to M4×16 remove the fan motor. DC fan motor Loosen the 2 screws to remove the fan motor fixing frame. Removal Procedure...
Page 170 SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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 171 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 Step Procedure Points When reassembling, make sure to fit the hook. Removal Procedure...
Page 172: Removal Of Electrical Box
SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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.
Page 173 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 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 174: Removal Of Reactor And Partition Plate
SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C Removal of Reactor and 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.
Page 175 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 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 176: Removal Of Sound Blanket
SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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.
Page 177 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 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 178: Removal Of Four Way Valve
SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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 179 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 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.
Page 180: Removal Of Compressor
SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C 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.
Page 181 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 Step Procedure Points Heat up the brazed part of the suction side and disconnect. Lift the compressor up and remove it. Removal Procedure...
Page 182: Removal Of Pcb
SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C Removal of PCB 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...
Page 183 Outdoor Unit / RK(X)S-C, ARK(X)S-C SiBE04-401 Step Procedure Points Loosen the 4 screws. Undo the 3 hooks on the upper side. Lift and pull out the PCB. Removal Procedure...
Page 184 SiBE04-401 Outdoor Unit / RK(X)S-C, ARK(X)S-C Step Procedure Points Feature of the PCB S70: fan motor S80: four way valve S90: thermistor (outdoor air, heat exchanger, discharge pipe) Removal Procedure...
Page 185: Outdoor Unit / Rk(X)H-C, Ark(X)H-C, R(Y)N-C
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 3. Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of External Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points stop valve cover can be removed when the fixing screw is...
Page 186 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points The top panel and the front panel are constructed in a monoblock. Remove the 3 screws on the right side and the 2 screws on the front panel. Remove the 3 screws on the left side.
Page 187 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points The front panel and the Sectional view at the front. left side panel can be Top panel separated when the fixing screw is removed. The edge of the top panel gets into this groove.
Page 188: Removal Of Bell Mouth
SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Bell mouth Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The bell mouth is attached to the front plate with 2 screws and 4 hooks.
Page 189: Removal Of Pcb And Electrical Box
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 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 1. Remove the drip proof The drip proof plate has 5 plate.
Page 190 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points (R4030) Disconnect the fan motor connector. (S70) (R4031) Disconnect the four way valve connector. (S80) (R4032) Removal Procedure...
Page 191 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points Disconnect the electronic expansion valve connector. (S20) (R4033) Disconnect the thermistor connector. (S90) outdoor air heat exchanger discharge pipe (R4034) Disconnect the relay harness. (R4035) Removal Procedure...
Page 192 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points (R4036) Disconnect the 2 reactor harnesses. (R4037) Disconnect the 4 wire harnesses. (R4038) Removal Procedure...
Page 193 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points Remove the 5 screws fixing the PCB. (R4039) Undo the 4 hooks and The PCB has 4 hooks. the PCB can be disengaged. (R4040) Control PCB (outdoor unit) (R4041) Removal Procedure...
Page 194 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points 3. Remove the electrical box. Release the lead wire of the fan motor from the ditch. (R4042) Remove the 2 screws fixing the electrical box. (R4043) Remove the screw of the terminal board cover.
Page 195 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points Remove the terminal board cover. (R4045) Lift and remove the electrical box. (R4046) Removal Procedure...
Page 196: Removal Of Propeller Fan And Fan Motor
SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Propeller Fan Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the external Be sure to restore the drip panels and the drip proof proof plate and to avoid plate protecting the...
Page 197 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points Remove the fan motor assembly. (R4050) The propeller fan can be removed when the washer faced nut (M8) is removed. When restoring, match the M mark of the propeller fan with (R4051) the D-cut of the motor shaft.
Page 198 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Remove the 2 screws for removing the fan motor. (R4053) Remove the fan motor. (R4054) Removal Procedure...
Page 199: Removal Of Partition Plate And Reactor
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Removal of Partition Plate and Reactor 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 right side panel.
Page 200 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Pull the partition plate upward to remove. (R4058) When restoring the partition plate, fit the hook into the bottom frame. (R4059) Removal Procedure...
Page 201 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points 3. Remove the reactor. The reactor can be released by removing the screw. (R4060) (R4061) Removal Procedure...
Page 202: Removal Of Sound Insulation Pad
SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Sound Insulation Pad 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 sound Since the slit prepared for insulation pad.
Page 203 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points Pull out the top sound Since the slit prepared for insulation pad. the piping on the sound insulation pad is torn easily, remove the pad carefully. (R4064) Pull out the under pad of the top sound insulation.
Page 204 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Pull out the bottom sound insulation pad. (R4067) Removal Procedure...
Page 205: Removal Of Electronic Expansion Valve And Four Way Valve
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Removal of Electronic Expansion Valve 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 parts around the four way valve.
Page 206 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Loosen the screw and remove the four way valve coil. (R4071) (R4072) Removal Procedure...
Page 207 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Step Procedure Points Confirm that the refrigerant is completely Caution empty in the refrigerant Be careful about four way circuit before starting valve, pipes and so on, which work. were heated up by a gas brazing machine, so as not to Provide a protective get burnt on your hands.
Page 208 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points In case that the removal seems to be hard; 1. Remove the piping connection part (brazing part) which is easy to remove and restore. 2. Cut the pipes on the main unit by a miniature copper tube cutter in order to make it easy to remove.
Page 209: Removal Of Compressor
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 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 parts around Be careful so as not to burn the compressor.
Page 210 SiBE04-401 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Confirm that the refrigerant is completely empty in the refrigerant Warning! circuit before starting Since it may happen that work. refrigeration oil in the compressor will catch fire, Be sure to apply prepare wet cloth so as to nitrogen’s replacement extinguish the fire quickly.
Page 211 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiBE04-401 Removal Procedure...
Page 212: Part 8 Others
SiBE04-401 Part 8 Part 8 Part 8 Part 8 Others Others Others Others 1. Others ....................204 1.1 Test Run from the Remote Controller ..........204 1.2 Jumper Settings ...................205 Others...
Page 213: Others
Others SiBE04-401 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 214: Jumper Settings
SiBE04-401 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) Remove the front grille.
Page 215 Others SiBE04-401 Others...
Page 216: Part 9 Appendix
SiBE04-401 Part 9 Part 9 Part 9 Part 9 Appendix Appendix Appendix Appendix 1. Piping Diagrams..................208 1.1 Indoor Units ..................208 1.2 Outdoor Units ..................209 2. Wiring Diagrams..................213 2.1 Indoor Units ..................213 2.2 Outdoor Units ..................214 Appendix...
Page 217: Piping Diagrams
Piping Diagrams SiBE04-401 1. Piping Diagrams Indoor Units FTK(X)S 20/25/35 CVMB(9)(8), ATK(X)S 20/25/35 CVMB(9) FTN20/25/35CVMB9, FTYN20/25/35CVMB9 INDOOR UNIT HEAT EXCHANGER 7.0CuT 6.4CuT THERMISTOR 6.4CuT ON HEAT EXCH. 6.4CuT CROSS FLOW FAN FIELD PIPING ( 6.4CuT ) FAN MOTOR FIELD PIPING 9.5CuT ( 9.5CuT ) REFRIGERANT FLOW...
Page 218: Outdoor Units
SiBE04-401 Piping Diagrams Outdoor Units 1.2.1 Cooling Only RKS20/25CVMB, ARKS20/25CVMB OUTDOOR UNIT OUTDOOR TEMPARATURE HEAT EXCHANGER THERMISTOR 7.0CuT 7.0CuT HEAT EXCHANER MOTOR OPERATED THERMISTOR VALVE 6.4CuT 7.0CuT 6.4CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT FOUR WAY VALVE FIELD PIPING NORMALLY:OFF ( 6.4CuT )
Page 219 Piping Diagrams SiBE04-401 RKH20/25CVMB9, ARKH20/25CVMB9, RN20/25CVMB9 OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR 9.5CuT 7.9CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 7.9CuT 6.4CuT 6.4CuT MUFFLER 7.9CuT WITH FILTER MUFFLER PROPELLER FAN WITH FILTER 9.5CuT FIELD PIPING ( 6.4CuT ) LIQUID STOP VALVE MUFFLER FIELD PIPING...
Page 220 SiBE04-401 Piping Diagrams 1.2.2 Heat Pump RXS20/25CVMB, ARXS20/25CVMB OUTDOOR UNIT OUTDOOR TEMPARATURE HEAT EXCHANGER THERMISTOR 7.0CuT 7.0CuT HEAT EXCHANER MOTOR OPERATED THERMISTOR VALVE 7.0CuT 6.4CuT 6.4CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT FOUR WAY VALVE FIELD PIPING ON:HEATING ( 6.4CuT ) LIQUID STOP...
Page 221 Piping Diagrams SiBE04-401 RXH20/25CVMB9, ARXH20/25CVMB9, RYN20/25CVMB9 OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR 9.5CuT 7.9CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 7.9CuT 6.4CuT 6.4CuT 7.9CuT MUFFLER WITH FILTER PROPELLER FAN LIQUID RECEIVER WITH FILTER 9.5CuT FOUR WAY FIELD PIPING VALVE ( 6.4CuT ) ON:HEATING LIQUID STOP...
Page 222: Wiring Diagrams
SiBE04-401 Wiring Diagrams 2. Wiring Diagrams Indoor Units FTK(X)S 20/25/35 CVMB(9)(8), ATK(X)S 20/25/35 CVMB(9) PCB3 PCB1 → INTELLIGENT- 3.15A EYE SENSOR outdoor TERMINAL FOR PCB2 / YLW FIELD WIRING. CENTRALIZED CONTROL TRANSMISSION LED1 LED2 LED3 CIRCUIT CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS SIGNAL...
Page 223: Outdoor Units
Wiring Diagrams SiBE04-401 Outdoor Units RK(X)S 20/25/35 CVMB, ARK(X)S 20/25/35 CVMB C100 FIELD WIRING. indoor PCB1 MRM20 IPM1 MRM10 3.15A IC11 3.15A PCB2 MRCW outdoor NOTE 1.REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. t˚ t˚ t˚ C74 , C75 IN CASE OF IN CASE OF C94 , C95 , C100...
Page 224 SiBE04-401 Wiring Diagrams RXH20/25/35CVMB9, ARXH20/25/35CVMB9, RYN20/25/35CVMB9 indoor MRM20 IPM1 MRM10 3.15A C100 IC11 FIELD WIRING. MRCW NOTE 1.REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. t˚ t˚ t˚ X30A outdoor : TERMINAL STRIP ( OUTDOOR ) ( DISCHARGE ) C74 , C75 , C80 ( CONDENSER ) C94 , C95 , C100 : CAPACITOR DB1 , DB2...
Page 225 Wiring Diagrams SiBE04-401 Appendix...
Page 226: Index
SiBE04-401 Index Index Index Index Numerics swing motor ..........142 control PCB (indoor unit) ....... 25, 147 00 ................95 control PCB (outdoor unit) ....27, 28, 173, 184 3-minutes standby ..........41, 48 cover service cover ..........137 stop valve cover ........156, 176 A1 ................96 terminal board cover ........
Page 227 SiBE04-401 L3 ..............115 high pressure control in cooling ......109 L4 ..............117 HL3 ................ 26 L5 ..............119 HN3 ............... 26 P4 ..............113 HOME LEAVE operation ......... 39, 75 U0 ..............121 horizontal blade ........... 140 U2 ..............123 hot start function ............ 41 U4 ..............101 error codes and description ........95 indoor unit PCB abnormality .........
Page 228 SiBE04-401 operation lamp ............90 S20 ............26, 28, 182 outdoor air temperature thermistor .......114 S21 ................ 24 outdoor air thermistor, connector ......182 S26 ................ 24 outdoor unit fan system check ......128 S27 ................ 24 OUTDOOR UNIT SILENT operation ......74 S30 ................ 26 output over current detection .......119 S32 ................
Page 229 SiBE04-401 V1 ...............24, 26, 28 V2 ..............26, 28 V3 ..............26, 28 varistor ............24, 26, 28 vertical blade ............141 voltage detection function ........56 wide-angle louvres ..........32 wiring diagrams ............213 Index...
Page 230 SiBE04-401 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts INTELLIGENT EYE sensor PCB ......25 inverter features ............ 31 ARC433A ...............92 inverter powerful operation ........40 automatic air flow control ........33 inverter units refrigerant system check ....129 automatic operation ..........35 auto-swing ..............32 jumper settings ............
Page 231 SiBE04-401 remote controller ............92 service check function ..........92 signal receiver PCB ..........25 signal transmission error (between indoor and outdoor units) .............101 target discharge pipe temperature control .....54 thermistor or related abnormality (indoor unit) ..100 thermistor or related abnormality (outdoor unit) ...113 thermistor resistance check .........126 trial operation from remote controller ....204 turning speed pulse input on the outdoor unit PCB...
Page 232 Head office: Zandvoordestraat 300, B-8400 Oostende, Belgium Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Tokyo office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan For further improvement, specifications or designs are subject to change without prior notice. Printed in Singapore 03/2004 AK COS...

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Daikin FTKS20CVMB Service Manual

Part 1 List of Functions

Part 2 Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Part 5 System Configuration

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Others

Part 9 Appendix

Index

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