Daikin FTKS20CVMB(9) Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Air Conditioner
  5. FTKS20CVMB(9)
  6. Service manual

Daikin FTKS20CVMB(9) Service Manual

Inverter pair wall mounted type c-series d-series
Hide thumbs Also See for FTKS20CVMB(9):
Table of Contents

Advertisement

Quick Links

SiENBE04-512A
Service
Manual
Inverter Pair

Wall Mounted Type

C-Series - D-Series

Advertisement

Table of Contents
loading

Related Manuals for Daikin FTKS20CVMB(9)

Summary of Contents for Daikin FTKS20CVMB(9)

  • Page 1: Wall Mounted Type

    SiENBE04-512A Service Manual Inverter Pair Wall Mounted Type C-Series - D-Series...
  • Page 2 SiENBE04-512A Inverter Pair C-Series D-Series Cooling Only Indoor Unit FTKS20CVMB(9) ATKS20DVMB ATKS20CVMB(9) FTN20CVMB9 FTKS25CVMB(9)(8) ATKS25DVMB ATKS25CVMB(9) FTN25CVMB9 FTKS35CVMB(9)(8) ATKS35DVMB ATKS35CVMB(9) FTN35CVMB9 ATKS20DAVMB ATKS25DAVMB ATKS35DAVMB Outdoor Unit RKH20CVMB7 ARKH20CVMB7 ARKS20CVMB(9) RN20CVMB7 RKH25CVMB7 ARKH25CVMB7 ARKS25CVMB(9) RN25CVMB7 RKH35CVMB7 ARKH35CVMB7 ARKS35CVMB(9) RN35CVMB7 ARKS20C2VMB ARKS25C2VMB ARKS35C2VMB Heat Pump Indoor Unit...

  • Page 3: Table Of Contents

    SiENBE04-512A 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 .................7 Part 2 Specifications ..............9 1. Specifications ..................10 1.1 Cooling Only...................10 1.2 Heat Pump .....................16 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 4 SiENBE04-512A 3.14 Additional Function.................62 3.15 Facility Setting Jumper (cooling at low outdoor temperature) ....63 Part 5 System Configuration............65 1. System Configuration................66 2. Instruction....................67 2.1 Safety precautions..................67 2.2 Names of parts ..................69 2.3 Preparation before Operation..............72 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........75 2.5 Adjusting the Air Flow Direction .............77 2.6 POWERFUL Operation ................79 2.7 OUTDOOR UNIT SILENT Operation .............80...
  • Page 5 SiENBE04-512A Part 7 Removal Procedure ............139 1. Indoor Unit...................140 1.1 Removal of Air Filter................140 1.2 Removal of Front Grille ................143 1.3 Removal of Horizontal Blade and Vertical Blade........146 1.4 Removal of Switch Box, PC Board and Swing Motor......148 1.5 Removal of Heat Exchanger ..............154 1.6 Install of Drain Plug ................157 1.7 Removal of Fan Rotor and Fan Motor..........158 2.

  • Page 6: Introduction

    SiENBE04-512A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. Warnings The caution items are classified into “ Warning” and “ Caution”. The “ Warning” 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 SiENBE04-512A 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

    SiENBE04-512A 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 SiENBE04-512A 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

    SiENBE04-512A Part 1 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 .................7 List of Functions...

  • Page 11: List Of Functions

    List of Functions SiENBE04-512A 1. List of Functions High Grade Models 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) —...
  • Page 12 SiENBE04-512A 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 —...

  • Page 13: Standard Grade Models

    List of Functions SiENBE04-512A 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 (°CDB) — Photocatalytic Deodorizing Filter —...
  • Page 14 SiENBE04-512A 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 (°CDB) — Photocatalytic Deodorizing Filter — —...
  • Page 15 List of Functions SiENBE04-512A 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 (°CDB) — Photocatalytic Deodorizing Filter — —...

  • Page 16: Non-Lnverter Models

    SiENBE04-512A List of Functions 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 (°CDB) —...
  • Page 17 List of Functions SiENBE04-512A List of Functions...

  • Page 18: Part 2 Specifications

    SiENBE04-512A Part 2 Specifications 1. Specifications ..................10 1.1 Cooling Only...................10 1.2 Heat Pump .....................16 Specifications...

  • Page 19: Specifications

    Specifications SiENBE04-512A 1. Specifications Cooling Only 1.1.1 High Grade Models 50Hz 230V Indoor Units ATKS20DVMB ATKS25DVMB ATKS35DVMB Models Outdoor Units ARKS20CVMB(9) ARKS25CVMB(9) ARKS35CVMB(9) 2.0 (1.3~2.6) 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)
  • Page 20 SiENBE04-512A Specifications 50Hz 230V Indoor Units ATKS20DAVMB ATKS25DAVMB ATKS35DAVMB Models Outdoor Units ARKS20C2VMB ARKS25C2VMB ARKS35C2VMB 2.0 (1.3~2.6) 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 (300~880)
  • Page 21 Specifications SiENBE04-512A 1.1.2 Standard Grade Models 50Hz 230V Indoor Units FTKS20CVMB(9) FTKS25CVMB(9)(8) FTKS35CVMB(9)(8) Models Outdoor Units RKH20CVMB7 RKH25CVMB7 RKH35CVMB7 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)
  • Page 22 SiENBE04-512A Specifications 50Hz 230V Indoor Units ATKS20CVMB(9) ATKS25CVMB(9) ATKS35CVMB(9) Models Outdoor Units ARKH20CVMB7 ARKH25CVMB7 ARKH35CVMB7 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) 700 (430~1200)
  • Page 23 Specifications SiENBE04-512A 50Hz 230V Indoor Units ATKS20DVMB ATKS25DVMB ATKS35DVMB Models Outdoor Units ARKH20CVMB7 ARKH25CVMB7 ARKH35CVMB7 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 24 SiENBE04-512A Specifications 1.1.3 Non-lnverter Models 50Hz 230V Indoor Units FTN20CVMB9 FTN25CVMB9 FTN35CVMB9 Models Outdoor Units RN20CVMB7 RN25CVMB7 RN35CVMB7 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 25: Heat Pump

    Specifications SiENBE04-512A Heat Pump 1.2.1 High Grade Models 50Hz 230V Indoor Units ATXS20DVMB ATXS25DVMB Models ARXS20CVMB(9) ARXS25CVMB(9) Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.0) 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 26 SiENBE04-512A Specifications 50Hz 230V Indoor Units ATXS35DVMB Models ARXS35CVMB(9) 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 27 Specifications SiENBE04-512A 50Hz 230V Indoor Units ATXS20DAVMB ATXS25DAVMB Models ARXS20C2VMB ARXS25C2VMB Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3~2.6) 2.7 (1.3~4.0) 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 28 SiENBE04-512A Specifications 50Hz 230V Indoor Units ATXS35DAVMB Models ARXS35C2VMB 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 29 Specifications SiENBE04-512A 1.2.2 Standard Grade Models 50Hz 230V Indoor Units FTXS20CVMB(9) FTXS25CVMB(9)(8) Models RXH20CVMB7 RXH25CVMB7 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 30 SiENBE04-512A Specifications 50Hz 230V Indoor Units FTXS35CVMB(9)(8) Models RXH35CVMB7 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 31 Specifications SiENBE04-512A 50Hz 230V Indoor Units ATXS20CVMB(9) ATXS25CVMB(9) Models ARXH20CVMB7 ARXH25CVMB7 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 32 SiENBE04-512A Specifications 50Hz 230V Indoor Units ATXS35CVMB(9) Models ARXH35CVMB7 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 33 Specifications SiENBE04-512A 50Hz 230V Indoor Units ATXS20DVMB ATXS25DVMB Models ARXH20CVMB7 ARXH25CVMB7 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 34 SiENBE04-512A Specifications 50Hz 230V Indoor Units ATXS35DVMB Models ARXH35CVMB7 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 35 Specifications SiENBE04-512A 1.2.3 Non-lnverter Models 50Hz 230V Indoor Units FTYN20CVMB9 FTYN25CVMB9 Models RYN20CVMB7 RYN25CVMB7 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 36 SiENBE04-512A Specifications 50Hz 230V Indoor Units FTYN35CVMB9 Models RYN35CVMB7 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 37 Specifications SiENBE04-512A Specifications...

  • Page 38: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiENBE04-512A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........30 1.1 Indoor Unit....................30 1.2 Outdoor Unit / ARK(X)S-C..............32 1.3 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C ........34 Printed Circuit Board Connector Wiring Diagram...

  • Page 39: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiENBE04-512A 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors 1) S1 Connector for fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S7 Connector for fan motor (Hall IC) 4) S21 Connector for centralized control (HA) 5) S26 Connector for signal receiver PCB...
  • Page 40 SiENBE04-512A 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 LED A (R4011) PCB(3): INTELLIGENT EYE sensor PCB (Inverter models only) (R3321) Printed Circuit Board Connector Wiring Diagram...

  • Page 41: Outdoor Unit / Ark(X)S-C

    Printed Circuit Board Connector Wiring Diagram SiENBE04-512A Outdoor Unit / ARK(X)S-C Connectors 1) S10 Connector for filter PCB 2) S11 Connector for control PCB 3) S20 Connector for electronic expansion valve coil 4) S30 Connector for compressor motor 5) S40 Connector for overload protector 6) S70 Connector for fan motor...
  • Page 42 SiENBE04-512A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (outdoor unit) S40 LED A S90 FU2(3.15A) (R3322) FU1(3.15A) PCB(2): Filter PCB FU3(20A) (R3323) Printed Circuit Board Connector Wiring Diagram...

  • Page 43: Outdoor Unit / Rk(X)H-C, Ark(X)H-C, R(Y)N-C

    Printed Circuit Board Connector Wiring Diagram SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Connectors 1) S20 Connector for electronic expansion valve 2) S70 Connector for fan motor 3) S80 Connector for four way valve 4) S90 Connector for thermistors (outdoor air, heat exchanger, discharge pipe) Note: Other designations...

  • Page 44: Part 4 Function And Control

    SiENBE04-512A Part 4 Function and Control 1. Main Functions..................36 1.1 Frequency Principle................36 1.2 Power-Airflow Dual Flaps, Wide-Angle Louvres and Auto-Swing ..38 1.3 Fan Speed Control for Indoor Units............39 1.4 Programme Dry Function ...............40 1.5 Automatic Operation................41 1.6 NIGHT SET Mode ..................42 1.7 INTELLIGENT EYE ................43 1.8 HOME LEAVE Operation ...............45 1.9 Inverter POWERFUL Operation .............46...

  • Page 45: Main Functions

    Main Functions SiENBE04-512A 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 46 SiENBE04-512A 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 47: Power-Airflow Dual Flaps, Wide-Angle Louvres And Auto-Swing

    Main Functions SiENBE04-512A 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 Dual Flaps control area in cooling, heating and dry mode. Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 48: Fan Speed Control For Indoor Units

    SiENBE04-512A 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 105.

  • Page 49: Programme Dry Function

    Main Functions SiENBE04-512A 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 50: Automatic Operation

    SiENBE04-512A Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote control, 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 51: Night Set Mode

    Main Functions SiENBE04-512A 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 one hour, then automatically raises the temperature setting slightly in the case of cooling, or Circuit lowers it slightly in the case of heating, for economical operations.

  • Page 52: Intelligent Eye

    SiENBE04-512A 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 53 Main Functions SiENBE04-512A 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 54: Home Leave Operation

    SiENBE04-512A 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 55: Inverter Powerful Operation

    Main Functions SiENBE04-512A 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 Control temperature will be converted to the following states in a period of twenty minutes.

  • Page 56: Other Functions

    SiENBE04-512A 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 57: Function Of Thermistor

    Function of Thermistor SiENBE04-512A 2. Function of Thermistor Heat Pump Model Four way valve Compressor (R3305) A 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) target discharge temperature can be obtained.

  • Page 58: Cooling Only Model

    SiENBE04-512A Function of Thermistor Cooling Only Model Compressor (R2828) A 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) target discharge temperature can be obtained.

  • Page 59: Control Specification

    Control Specification SiENBE04-512A 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 60: Frequency Control

    SiENBE04-512A 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 control.) 3.
  • Page 61 Control Specification SiENBE04-512A 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 62: Controls At Mode Changing / Start-Up

    SiENBE04-512A 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 from the discharge pipe temperature. Detail Preheating ON Condition When the discharge pipe temperature is below 10ºC, inverter in open phase operation starts.

  • Page 63: Discharge Pipe Control

    Control Specification SiENBE04-512A 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 64: Input Current Control

    SiENBE04-512A 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 65: Heating Peak-Cut Control

    Control Specification SiENBE04-512A 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 66: Defrost Control

    SiENBE04-512A 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 67: Electronic Expansion Valve Control

    Control Specification SiENBE04-512A 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 68 SiENBE04-512A 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 69: Target Discharge Pipe Temperature Control

    Control Specification SiENBE04-512A 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 temperature, and adjust the electronic expansion valve opening so that the actual discharge...

  • Page 70: Malfunctions

    SiENBE04-512A 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 and Over Current Outline In order to protect the inverter, detect an excessive output current, and for protecting compressor, monitor the OL operation.

  • Page 71: Forced Operation Mode

    Control Specification SiENBE04-512A 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 72: Facility Setting Jumper (Cooling At Low Outdoor Temperature)

    SiENBE04-512A 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 73 Control Specification SiENBE04-512A Function and Control...

  • Page 74: Part 5 System Configuration

    SiENBE04-512A Part 5 System Configuration 1. System Configuration................66 2. Instruction....................67 2.1 Safety precautions..................67 2.2 Names of parts ..................69 2.3 Preparation before Operation..............72 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........75 2.5 Adjusting the Air Flow Direction .............77 2.6 POWERFUL Operation ................79 2.7 OUTDOOR UNIT SILENT Operation .............80 2.8 HOME LEAVE Operation ...............81...

  • Page 75: System Configuration

    System Configuration SiENBE04-512A 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 76: 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 77: Installation Site

    Instruction SiENBE04-512A • 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 78: Names Of Parts

    SiENBE04-512A Instruction Names of Parts Indoor Unit System Configuration...

  • Page 79: Outdoor Unit

    Instruction SiENBE04-512A Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: 2. Airpurifying filter with photocatalytic • Push this switch once to start operation. deodorizing function: Push once again to stop it. • These filters are attached to the inside of •...

  • Page 80: Remote Control

    SiENBE04-512A Instruction Remote control HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT SENSOR CANCEL TIMER < > ARC433A37, A38 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2.

  • Page 81: Preparation Before Operation

    Instruction SiENBE04-512A Preparation Before Operation To set the batteries 1. Press “ ” with a finger and slide the Position + and – correctly! front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 82 SiENBE04-512A Instruction To operate the remote control • To use the remote control, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control, such as a curtain, the unit will not operate. Receiver •...

  • Page 83: To Set The Clock

    Instruction SiENBE04-512A To set the clock 1. Press “CLOCK button”. 0:00 is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3.

  • Page 84: Auto Dry Cool Heat Fan Operation

    SiENBE04-512A 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. To start operation 1. Press “MODE selector button” and select a operation mode.

  • Page 85: To Change The Air Flow Rate Setting

    Instruction SiENBE04-512A To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode The air flow rate setting is not variable Five levels of air flow rate setting from “ “...

  • Page 86: Adjusting The Air Flow Direction

    SiENBE04-512A Instruction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. • “ ” is displayed on the LCD. 1. When the flaps have reached the desired position, press “SWING button”...
  • Page 87 Instruction SiENBE04-512A 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 swinging range depends In DRY mode or COOL mode on the operation mode.

  • Page 88: Powerful Operation

    SiENBE04-512A 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 before POWERFUL operation.

  • Page 89: Outdoor Unit Silent Operation

    Instruction SiENBE04-512A 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 convenient during night. To start OUTDOOR UNIT SILENT operation 1.

  • Page 90: Home Leave Operation

    SiENBE04-512A Instruction 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”. • “ ” is displayed on the LCD. •...
  • Page 91 Instruction SiENBE04-512A 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 temperature and air flow rate.

  • Page 92: Intelligent Eye Operation

    SiENBE04-512A Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2. Press “SENSOR button” again. •...
  • Page 93 Instruction SiENBE04-512A 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° sensor •...

  • Page 94: Timer Operation

    SiENBE04-512A 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. To use OFF TIMER operation •...

  • Page 95: To Use On Timer Operation

    Instruction SiENBE04-512A To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. • 6:00 is displayed. • “ “blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.

  • Page 96: Care And Cleaning

    SiENBE04-512A Instruction 2.11 Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front panel 1. Open the front panel. •...

  • Page 97: Air Filter

    Instruction SiENBE04-512A FILTERS 1. Open the front panel. 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 photocatalytic deodorizing function.

  • Page 98: Before A Long Idle Period

    SiENBE04-512A 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. •...

  • Page 99: Troubleshooting

    Instruction SiENBE04-512A 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.You should wait for about 3 •...
  • Page 100 SiENBE04-512A Instruction Check again. Please check again before calling a repair person. Case Check The air conditioner does not operate. • Hasn’t a breaker turned OFF or a fuse blown? (OPERATION lamp is off) • Isn’t it a power failure? •...
  • Page 101 Instruction SiENBE04-512A 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. Do not attempt to repair or modify the air conditioner by yourself.
  • Page 102 SiENBE04-512A Instruction Call the service shop immediately. FAULT DIAGNOSIS BY REMOTE CONTROL 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 “00” indication flashes on the temperature display section.
  • Page 103 Instruction SiENBE04-512A System Configuration...

  • Page 104: Part 6 Service Diagnosis

    SiENBE04-512A Part 6 Service Diagnosis 1. Caution for Diagnosis................96 2. Problem Symptoms and Measures ............97 3. Service Check Function ................98 4. Troubleshooting ..................101 4.1 Error Codes and Description ..............101 4.2 Indoor Unit PCB Abnormality ...............102 4.3 Freeze-up Protection Control or High Pressure Control.......103 4.4 Fan Motor (AC Motor) or Related Abnormality........105 4.5 Thermistor or Related Abnormality (Indoor Unit)........106 4.6 Signal Transmission Error (between Indoor and Outdoor Unit) ...107...

  • Page 105: Caution For Diagnosis

    Caution for Diagnosis SiENBE04-512A 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 106: Problem Symptoms And Measures

    SiENBE04-512A Problem Symptoms and Measures 2. 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 107: Service Check Function

    Service Check Function SiENBE04-512A 3. Service Check Function In the ARC433A series remote control, 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 108 SiENBE04-512A Service Check Function Check Method 2 1. Enter the diagnosis mode. s ,TEMP t , MODE) simultaneously. Press the 3 buttons (TEMP (R4272) The digit of the number of tens blinks. HTry again from the start when the digit does not blink. (R4273) 2.
  • Page 109 Service Check Function SiENBE04-512A 5. Press the TEMP button. s or TEMP t and change the digit until you hear the sound of “beep”. Press TEMP (R4277) 6. Diagnose by the sound. H“ pi ” : The both numbers of tens and units do not accord with the error code. H“...

  • Page 110: Troubleshooting

    SiENBE04-512A Troubleshooting 4. 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 111: Indoor Unit Pcb Abnormality

    Troubleshooting SiENBE04-512A Indoor Unit PCB Abnormality Remote Control 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 112: Freeze-Up Protection Control Or High Pressure Control

    SiENBE04-512A Troubleshooting Freeze-up Protection Control or High Pressure Control Remote Control Display Method of High pressure control (heat pump model only) During heating operations, the temperature detected by the indoor heat exchanger Malfunction 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 113 Troubleshooting SiENBE04-512A 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.132 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 114: Fan Motor (Ac Motor) Or Related Abnormality

    SiENBE04-512A Troubleshooting Fan Motor (AC Motor) or Related Abnormality Remote Control 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 Decision rotation demand.

  • Page 115: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting SiENBE04-512A Thermistor or Related Abnormality (Indoor Unit) C4, C9 Remote Control 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 Decision operation∗.

  • Page 116: Signal Transmission Error (Between Indoor And Outdoor Unit)

    SiENBE04-512A Troubleshooting Signal Transmission Error (between Indoor and Outdoor Unit) Remote Control 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 Decision the data is abnormal.

  • Page 117: Ol Activation (Compressor Overload)

    Troubleshooting SiENBE04-512A OL Activation (Compressor Overload) Remote Control 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. Decision The error counter will reset itself if this or any other error does not occur during the following 60-minute compressor running time (total time).

  • Page 118: Compressor Lock

    SiENBE04-512A Troubleshooting Compressor Lock Remote Control 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. Decision The system judges the compressor lock, and cannot operation with position detection within 15 seconds after start up.

  • Page 119: Dc Fan Lock

    Troubleshooting SiENBE04-512A DC Fan Lock Remote Control 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. Decision The system will be shut down if the error occurs 16 times.

  • Page 120: Input Over Current Detection

    SiENBE04-512A Troubleshooting 4.10 Input Over Current Detection Remote Control 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. Decision Cooling / Heating: Above 12A Conditions...

  • Page 121: Four Way Valve Abnormality

    Troubleshooting SiENBE04-512A 4.11 Four Way Valve Abnormality Remote Control 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 122 SiENBE04-512A 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.131 Four way valve coil Correct. disconnected (loose)? Check No.6 Refer to P.132 Reconnect. Harness out of connector? Check No.11 Refer to P.135...

  • Page 123: Discharge Pipe Temperature Control

    Troubleshooting SiENBE04-512A 4.12 Discharge Pipe Temperature Control Remote Control 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 Decision system will be shut down.

  • Page 124: High Pressure Control In Cooling

    SiENBE04-512A Troubleshooting 4.13 High Pressure Control in Cooling Remote Control 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 Decision...
  • Page 125 Troubleshooting SiENBE04-512A 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.130 Check the installation space. Check No.6 Check No.7 Abnormal Change the air outlet grille Installation condition Refer to P.132 position.

  • Page 126: Position Sensor Abnormality

    SiENBE04-512A Troubleshooting 4.14 Position Sensor Abnormality Remote Control 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 Decision is sent.

  • Page 127: Dc Voltage / Current Sensor Abnormality

    Troubleshooting SiENBE04-512A 4.15 DC Voltage / Current Sensor Abnormality Remote Control 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. Decision (The input current is also below 0.5 A.) If this error repeats 4 times, the system will be shut down.

  • Page 128: Thermistor Or Related Abnormality (Outdoor Unit)

    SiENBE04-512A Troubleshooting 4.16 Thermistor or Related Abnormality (Outdoor Unit) P4, J3, J6, H9 Remote Control 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 129 Troubleshooting SiENBE04-512A 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.132 Error displayed again Reconnect. on remote control? Connector or thermistor Reconnect.

  • Page 130: Electrical Box Temperature Rise

    SiENBE04-512A Troubleshooting 4.17 Electrical Box Temperature Rise Remote Control 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 Decision when the temperature drops below 70°C(80°C ).
  • Page 131 Troubleshooting SiENBE04-512A 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.132 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 80°C(85°C ) and stops itself...

  • Page 132: Radiation Fin Temperature Rise

    SiENBE04-512A Troubleshooting 4.18 Radiation Fin Temperature Rise Remote Control 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, Decision R(Y)N models).
  • Page 133 Troubleshooting SiENBE04-512A 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.132 again to get the system started. Check No.7 Refer to P.133 Error displayed again?

  • Page 134: Output Over Current Detection

    SiENBE04-512A Troubleshooting 4.19 Output Over Current Detection Remote Control 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. Decision A speed error occurs while the compressor is running.
  • Page 135 Troubleshooting SiENBE04-512A 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.133 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.

  • Page 136: Insufficient Gas

    SiENBE04-512A Troubleshooting 4.20 Insufficient Gas Remote Control 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 137 Troubleshooting SiENBE04-512A 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.130 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 138: Over-Voltage Detection

    SiENBE04-512A Troubleshooting 4.21 Over-voltage Detection Remote Control 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 Decision (The voltage is over 400V).

  • Page 139: Check

    Check SiENBE04-512A 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 140: Four Way Valve Performance Check

    SiENBE04-512A 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 141: Thermistor Resistance Check

    Check SiENBE04-512A 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 142: Installation Condition Check

    SiENBE04-512A 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 and discharge discharge grille or the 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 143: Outdoor Unit Fan System Check

    Check SiENBE04-512A 5.1.6 Outdoor Unit Fan System Check Check No.9 DC motor — ARK(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 144: Power Supply Waveforms Check

    SiENBE04-512A 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 145: Power Transistor Check

    Check SiENBE04-512A 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 146: Hall Ic Check

    SiENBE04-512A 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. Failure of (1) faulty PCB Replace the PCB.
  • Page 147 Check SiENBE04-512A Service Diagnosis...

  • Page 148: Part 7 Removal Procedure

    SiENBE04-512A Part 7 Removal Procedure 1. Indoor Unit...................140 1.1 Removal of Air Filter................140 1.2 Removal of Front Grille ................143 1.3 Removal of Horizontal Blade and Vertical Blade........146 1.4 Removal of Switch Box, PC Board and Swing Motor......148 1.5 Removal of Heat Exchanger ..............154 1.6 Install of Drain Plug ................157 1.7 Removal of Fan Rotor and Fan Motor..........158 2.

  • Page 149: Indoor Unit

    Indoor Unit SiENBE04-512A 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 Timer lamp (Yellow) If ON/OFF button is kept HOME ON/OFF button LEAVE...
  • Page 150 SiENBE04-512A 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 151 Indoor Unit SiENBE04-512A 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 152: Removal Of Front Grille

    SiENBE04-512A 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 153 Indoor Unit SiENBE04-512A 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 154 SiENBE04-512A 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 155: Removal Of Horizontal Blade And Vertical Blade

    Indoor Unit SiENBE04-512A 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 156 SiENBE04-512A 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 157: Removal Of Switch Box, Pc Board And Swing Motor

    Indoor Unit SiENBE04-512A Removal of Switch Box, PC Board 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. Terminal strip Earth screw Heat exchanger thermistor Swing motor...
  • Page 158 SiENBE04-512A Indoor Unit Step Procedure Points Remove a screw on the The switch box can be terminal strip. removed instead of disengaging the terminal strip. Remove a screw on the switch box. Removal Procedure...
  • Page 159 Indoor Unit SiENBE04-512A Step Procedure Points Pull up the switch box A hook is provided on the forward to remove. behind. Removal Procedure...
  • Page 160 SiENBE04-512A Indoor Unit Step Procedure Points 2. Removal of PCB Remove the shelter. Shelter (R2535) Disengage the front plate of the switch box. Disengage the knobs Pushing point by pushing the two hooks at the top and the bottom. Push Pushing point (R2536) Sliding to the left, the...
  • Page 161 Indoor Unit SiENBE04-512A Step Procedure Points PC Board (R2538) Disengage the four knobs on the back of the display PCB. LED3 and Intelligent eye sensor PCB are only for inverter models. Knob (R2539) Display PCB. LED1 LED2 LED3 (Green) (Yellow) (Red) Intelligent eye sensor PCB...
  • Page 162 SiENBE04-512A Indoor Unit Step Procedure Points Control PCB. The control PCB is 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 163: Removal Of Heat Exchanger

    Indoor Unit SiENBE04-512A 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 164 SiENBE04-512A Indoor Unit Step Procedure Points Disengage the hooks of the pipe retainer on the back. Pipe retainer (R2547) Pull auxiliary pipe Be careful to prevent pipe forward to an angle of deformation. 10 to 20 degrees. Disengage hooks located right and left This hook is located both side of heat exchanger.
  • Page 165 Indoor Unit SiENBE04-512A 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 166: Install Of Drain Plug

    SiENBE04-512A 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 167: Removal Of Fan Rotor And Fan Motor

    Indoor Unit SiENBE04-512A Removal of Fan Rotor 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 Remove heat exchanger. To remove right side panel, remove three screws.
  • Page 168 SiENBE04-512A Indoor Unit Step Procedure Points Disengage hook. Hook (R2558) Loosen the hexagon head set screw on the fan rotor. Removal Procedure...
  • Page 169 Indoor Unit SiENBE04-512A Step Procedure Points Remove the motor and fan rotor. Remove a screw on the left side panel. Disengage a hook from the backward (R2562) Removal Procedure...
  • Page 170 SiENBE04-512A Indoor Unit Step Procedure Points Disengage a hook from the backward. Left-side plate (R2564) 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.

  • Page 171: Outdoor Unit / Ark(X)S-C

    Outdoor Unit / ARK(X)S-C SiENBE04-512A 2. Outdoor Unit / 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. Features Handle (R3235) Take care not to cut your...
  • Page 172 SiENBE04-512A Outdoor Unit / ARK(X)S-C Step Procedure Points 2. Remove the panels. Top panel Loosen the 3 screws (front, right, left) and lift the top panel. (R3239) Remove the drip proof Drip proof plate plate. (R3240) Disconnect the The fan motor is united with connector for fan motor the front panel.
  • Page 173 Outdoor Unit / ARK(X)S-C SiENBE04-512A 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. Hooks (R3243) 3. Remove the fan motor. The screw has reverse winding.
  • Page 174 SiENBE04-512A Outdoor Unit / ARK(X)S-C Step Procedure Points Loosen the 2 screws Bell mouth and lift the bell mouth to undo the hooks. Remove the bell mouth. Hooks (R3246) Loosen the fixing hooks Put the lead wire through the and release the lead back of the motor when wire.
  • Page 175 Outdoor Unit / ARK(X)S-C SiENBE04-512A Step Procedure Points Loosen the 4 screws to M4×16 remove the fan motor. DC fan motor Fan motor (R3250) Loosen the 2 screws to remove the fan motor fixing frame. Fan motor fixing frame (R3251) Removal Procedure...
  • Page 176 SiENBE04-512A Outdoor Unit / 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. Right side panel (R3254) Loosen the screw and lift the connection port to remove.
  • Page 177 Outdoor Unit / ARK(X)S-C SiENBE04-512A Step Procedure Points When reassembling, make sure to fit the hook. Hook (R3257) Removal Procedure...

  • Page 178: Removal Of Electrical Box

    SiENBE04-512A Outdoor Unit / 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 179 Outdoor Unit / ARK(X)S-C SiENBE04-512A Step Procedure Points Release the discharge Pay attention so as not to pipe thermistor. lose the clip for thermistor. Thermistor Clip Piping (R3262) Discharge pipe thermistor (R3261) Release the heat Pay attention so as not to exchanger thermistor.

  • Page 180: Removal Of Reactor And Partition Plate

    SiENBE04-512A Outdoor Unit / 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. Reactor Remove the electrical box.
  • Page 181 Outdoor Unit / ARK(X)S-C SiENBE04-512A 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. Hook (R3270) Removal Procedure...

  • Page 182: Removal Of Sound Blanket

    SiENBE04-512A Outdoor Unit / 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. Remove the sound blanket.
  • Page 183 Outdoor Unit / ARK(X)S-C SiENBE04-512A 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 184: Removal Of Four Way Valve

    SiENBE04-512A Outdoor Unit / 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 185 Outdoor Unit / ARK(X)S-C SiENBE04-512A Step Procedure Points Remove the sheets of putty. Cut the pipe with a tube cutter. Tube cutter (R3280) Heat up the brazed part Provide a protective sheet or and withdraw the piping a steel plate so that the with pliers.

  • Page 186: Removal Of Compressor

    SiENBE04-512A Outdoor Unit / 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. Warning Ventilate when refrigerant leaks during the work.
  • Page 187 Outdoor Unit / ARK(X)S-C SiENBE04-512A Step Procedure Points Heat up the brazed part of the suction side and disconnect. Lift the compressor up and remove it. Removal Procedure...

  • Page 188: Removal Of Pcb

    SiENBE04-512A Outdoor Unit / 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 board without removing the...
  • Page 189 Outdoor Unit / ARK(X)S-C SiENBE04-512A Step Procedure Points Loosen the 4 screws. Undo the 3 hooks on Hooks the upper side. (R3290) Lift and pull out the PCB. Removal Procedure...
  • Page 190 SiENBE04-512A Outdoor Unit / ARK(X)S-C Step Procedure Points Feature of the PCB Glass fuse PbF (Pb free soldering) S70: fan motor 3.15A S80: four way valve S90: thermistor (outdoor air, heat exchanger, discharge pipe) Glass fuse LEDA Varistor (R3292) Removal Procedure...

  • Page 191: 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 SiENBE04-512A 3. Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of External Panels Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Remove the external The top panel is integrated panels.
  • Page 192 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points When mounting the panel, be sure to fasten the hooks (at 7 positions). Remove the 2 screws The left side panel and the at the front and the 3 bell mouth can be removed screws at the right side.
  • Page 193 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Once bring up the front panel and remove it toward the front. The left side panel and the bell mouth can be removed all at once. The top panel can be mounted easily if you move it horizontally and put it down.

  • Page 194: Removal Of Bell Mouth

    SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Bell Mouth Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points The bell mouth is Dismount the bell mouth attached to the front from the front panel after Hook A panel with 2 screws and...

  • Page 195: Removal Of Pcb

    Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Removal of PCB Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points To remove the drip proof plate, unfasten the hooks at 2 positions.
  • Page 196 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Peel off the adhesive For prolonged durability, use tape at 2 positions of filament-reinforced adhesive Insulation sheet the insulation sheet. tape. (PVC tape can not be used.) Adhesive tape (R4438) Remove the insulation sheet.
  • Page 197 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Disconnect the fan [S70] motor connector [S70]. (R4440) The figure shows the wire harness connection around the hook. Remove the fan motor lead wire from the Fan motor lead wire groove.
  • Page 198 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Disconnect the [S20] electronic expansion valve connector [S20]. (R4445) Disconnect the thermistor assembly [S90] connector (for outdoor air, heat exchanger, discharge pipe) [S90]. (R4446) Disconnect the compressor relay harness. Removal Procedure...
  • Page 199 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Disconnect the faston terminal from the reactor. Reactor (R4448) Disconnect the ground wire. Ground terminal screw (R4449) Disconnect the black, white, red, and green connectors from the power supply terminal White Black board.
  • Page 200 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points For quality improvement, the PCB is placed upside down. Lead-free solder (PbF) is used for PCB. When replacing the PCB, use the specific solder and soldering iron. Check the LED A through the slit.
  • Page 201 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Remove the radiation Be sure to use silicone agent fin from the underneath. to make a tight contact with the radiation fin. Part No. of silicone agent: 1172698 Release the hooks of the PCB.
  • Page 202 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points [S20] Electronic expansion valve [S70] Fan motor [S80] Four way valve [S90] Thermistor assembly The figure shows the [S90] [S20] [S80] [S70] appearance of the PCB. (R4458) The figure shows the appearance of the electrical box.

  • Page 203: Removal Of Electrical Box

    Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Removal of Electrical Box Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points The figure shows the electrical box. Disconnect the ground terminal.
  • Page 204 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Disconnect the connection wires of the terminal block. Remove the 2 screws at the electrical box front and right side. Remove the electrical box by lifting it up. Removal Procedure...
  • Page 205 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Release the 2 wire harnesses from the hooks at the back. Remove the electrical box. Removal Procedure...

  • Page 206: Removal Of Propeller Fan And Fan Motor

    SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Propeller Fan and Fan Motor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Remove the motor assembly. Remove the 2 screws at the lower part of the fan motor assembly.
  • Page 207 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Lift up the fan motor assembly and remove 2. Remove the propeller fan. Be careful of the fan fixing nut, which is of left-hand Dismount the propeller thread. fan by removing the washer faced nut with use of an open-ended wrench.
  • Page 208 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points 3. Remove the fan motor. Pass the lead wire along the back of the motor. (Be Pry up the hook which careful not to get the wire fixes the lead wire and Fixing hook caught by the propeller fan.) draw out the lead wire.

  • Page 209: Removal Of Compressor Sound Insulation Pad

    Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Removal of Compressor Sound Insulation Pad Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Remove the right side Preparation panel. Remove the electrical box according to the removal of Dismount the right side...
  • Page 210 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Remove the right side panel by sliding it up along the 2 hooks at the lower side. Hook Hook (R4483) Unfasten the hook at the top. Hook (R4484) When mounting the right side panel, fasten the 3 hooks.
  • Page 211 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points 2. Remove the partition plate. To dismount the partition plate, remove the 2 screws. Unfasten the hook of When mounting the partition the lower side of the plate, fasten the hook of the partition plate from the bottom frame.
  • Page 212 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points 3. Remove the reactor. To dismount the reactor, remove the screw. Slide up the reactor and remove it. Removal Procedure...
  • Page 213 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points 4. Remove the thermistor assembly. Remove the discharge pipe thermistor. Be careful not to lose the discharge pipe thermistor fixture. Remove the discharge pipe thermistor while opening the thermistor fixture. Thermistor fixture Discharge-pipe thermistor (R4490)
  • Page 214 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Remove the heat exchanger thermistor. Be careful not to lose the thermistor retaining spring. Align the thermistor with the end of the retaining spring. Heat exchanger thermistor Thermistor retaining spring (R4493) Disconnect the thermistor assembly...
  • Page 215 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points 5. Remove the sound Preparation insulation pad. Remove the partition plate according to the removal of Untie the fixing strap of Sound insulation partition plate. the sound insulation pad (outer shell) pad (outer shell).
  • Page 216 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Remove the sound insulation pad (top). Remove the sound insulation pad (under). Sound insulator (under) (R4500) Removal Procedure...
  • Page 217 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Open the sound insulation pad (inner shell) and pull it out. The slits of the sound insulation pad for piping are apt to break off. Pay attention when removing. Sound insulation pad (inner shell) (R4566)

  • Page 218: Removal Of Compressor

    SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Compressor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Remove the parts around Preparation the compressor. Remove the compressor sound insulation pad Remove the terminal according to the removal of...
  • Page 219 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points Remove the terminal Take a note. cover gasket. U : Red V : Yellow W: Blue Gasket (R4507) 2. Remove the compressor. Warning Remove the nut of the If the refrigerant gas leaks compressor.
  • Page 220 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points Heat the soldered Warning portion of the suction If the refrigerant gas leaks side, and disconnect during work, ventilate the the suction pipe. room. (In case the refrigerant gas is exposed to fire, it will cause toxic gas.) Cautions on Mounting 1.

  • Page 221: Removal Of Four Way Valve

    Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Removal of Four Way Valve Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Remove the parts around Preparation the four way valve. Remove the compressor sound insulation pad and To remove the coil of...
  • Page 222 SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Step Procedure Points 2. Remove the four way When heating the soldered portion, be sure to conduct valve. nitrogen replacement. Heat the soldered portions of the four way valve and remove the valve. Loosen the soldered Cautions on Mounting portions one by one...
  • Page 223 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Step Procedure Points NOTE: Warning Never use a metal cutting saw If the refrigerant gas for cutting off the pipe. It leaks during work, produces metallic sawdust that ventilate the room. (In may enter the pipe. case the refrigerant gas is exposed to fire, it will cause toxic...

  • Page 224: Removal Of Electronic Expansion Valve

    SiENBE04-512A Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C Removal of Electronic Expansion Valve Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Remove the parts around Preparation the electronic expansion Remove the compressor Coil of electronic expansion valve...
  • Page 225 Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C SiENBE04-512A Removal Procedure...

  • Page 226: Part 8 Others

    SiENBE04-512A Part 8 Others 1. Others ....................218 1.1 Test Run from the Remote Control ............218 1.2 Jumper Settings ...................219 Others...

  • Page 227: Others

    Others SiENBE04-512A 1. Others Test Run from the Remote Control 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 228: Jumper Settings

    SiENBE04-512A 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 infrared remote controls can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front panel.
  • Page 229 Others SiENBE04-512A Others...

  • Page 230: Part 9 Appendix

    SiENBE04-512A Part 9 Appendix 1. Piping Diagrams..................222 1.1 Indoor Units ..................222 1.2 Outdoor Units ..................223 2. Wiring Diagrams..................229 2.1 Indoor Units ..................229 2.2 Outdoor Units ..................230 Appendix...

  • Page 231: Piping Diagrams

    Piping Diagrams SiENBE04-512A 1. Piping Diagrams Indoor Units 1.1.1 Cooling Only FTKS20CVMB(9), FTKS25/35CVMB(9)(8), ATKS20/25/35CVMB(9), ATKS20/25/35DVMB FTN20/25/35CVMB9, ATKS20/25/35DAVMB 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 232: Outdoor Units

    SiENBE04-512A Piping Diagrams Outdoor Units 1.2.1 Cooling Only ARKS20/25CVMB(9) 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 FOUR WAY VALVE FIELD PIPING NORMALLY : OFF ( 6.4CuT ) LIQUID STOP...
  • Page 233 Piping Diagrams SiENBE04-512A RKH20/25CVMB7, ARKH20/25CVMB7, RN20/25CVMB7 OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 9.5CuT THERMISTOR 7.9CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 7.9CuT 6.4CuT 6.4CuT 7.9CuT MUFFLER WITH FILTER PROPELLERFAN DRIER FIELD PIPING (6.4CuT) LIQUID STOP VALVE MUFFLER 9.5CuT FIELD PIPING DISCHARGE PIPE COMPRESSOR THERMISTOR...
  • Page 234 SiENBE04-512A Piping Diagrams ARKS20/25C2VMB 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 FOUR WAY VALVE FIELD PIPING NORMALLY : OFF ( 6.4CuT ) LIQUID STOP VALVE MUFFLER...
  • Page 235 Piping Diagrams SiENBE04-512A 1.2.2 Heat Pump ARXS20/25CVMB(9) 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 FOUR WAY VALVE FIELD PIPING NORMALLY : OFF ( 6.4CuT ) LIQUID STOP VALVE...
  • Page 236 SiENBE04-512A Piping Diagrams RXH20/25CVMB7, ARXH20/25CVMB7, RYN20/25CVMB7 OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 9.5CuT THERMISTOR 7.9CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 7.9CuT 6.4CuT 6.4CuT 7.9CuT DRIER PROPELLER FAN LIQUID RECEIVER WITH 9.5CuT FILTER FOUR WAY FIELD PIPING VALVE (6.4CuT) ON : HEATING LIQUID STOP VALVE MUFFLER...
  • Page 237 Piping Diagrams SiENBE04-512A ARXS20/25C2VMB 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 FOUR WAY FIELD PIPING VALVE NORMALLY : OFF ( 6.4CuT ) LIQUID STOP VALVE MUFFLER...

  • Page 238: Wiring Diagrams

    SiENBE04-512A Wiring Diagrams 2. Wiring Diagrams Indoor Units FTK(X)S20/25/35CVMB(9)(8), ATK(X)S20/25/35CVMB(9), ATK(X)S20/25/35DVMB ATK(X)S20/25/35DAVMB PCB3 S36 S35 PCB1 PCB3 S36 S35 → PCB1 INTELLIGENT- EYE SENSOR 3.15A → INTELLIGENT- outdoor EYE SENSOR TERMINAL FOR 3.15A outdoor PCB2 CENTRALIZED CONTROL FIELD WIRING. TERMINAL FOR TRANSMISSION PCB2 LED1...

  • Page 239: Outdoor Units

    Wiring Diagrams SiENBE04-512A Outdoor Units ARK(X)S20/25/35CVMB(9), ARK(X)S20/25/35C2VMB 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 ° IN CASE OF IN CASE OF C74 , C75 COOLING ONLY...
  • Page 240 SiENBE04-512A Wiring Diagrams RXH20/25/35CVMB7, ARXH20/25/35CVMB7, RYN20/25/35CVMB7 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 )
  • Page 241 Wiring Diagrams SiENBE04-512A Appendix...

  • Page 242: Index

    SiENBE04-512A Index Numerics 00 .................101 DC fan lock ............110 3-minutes standby ..........47, 54 DC voltage / current sensor abnormality ..... 118 defrost control ............57 diagnosis mode ............. 99 A1 .................102 discharge pipe ............59 A5 .................103 discharge pipe control ........... 54 A6 .................105 discharge pipe temperature control ....
  • Page 243 SiENBE04-512A input over current detection ......... 111 installation condition check ......... 133 F3 .................114 instruction .............. 67 F6 .................115 insufficient gas ............ 127 facility setting jumper ........32, 63 insufficient gas control ........... 61 fan control ..............56 INTELLIGENT EYE ..........43 fan motor ..........158, 166, 197 INTELLIGENT EYE operation .......
  • Page 244 SiENBE04-512A S80 ..........32, 34, 169, 188 S90 ............32, 34, 189 P4 .................119 safety precautions ..........67 panel self-diagnosis digital display ........47 front panel ............163 sensor malfunction detection ........ 61 right side panel ........167, 200 service check function ........... 98 top panel ............163 service cover ............
  • Page 245 SiENBE04-512A wiring diagrams ............229 Index...

  • Page 246: Drawings & Flow Charts

    SiENBE04-512A Drawings & Flow Charts inverter features ............ 37 inverter POWERFUL operation ......46 ARC433A ...............98 inverter units refrigerant system check ....135 automatic air flow control ........39 automatic operation ..........41 auto-swing ..............38 jumper settings ............ 219 compressor lock ...........109 mode hierarchy .............
  • Page 247 SiENBE04-512A position sensor abnormality .........117 power supply waveforms check ......135 POWERFUL operation ...........46 programme dry function .........40 radiation fin temperature rise .......123 remote control ............98 service check function ..........98 signal receiver PCB ..........31 signal transmission error (between indoor and outdoor units) .............107 target discharge pipe temperature control .....60 thermistor or related abnormality (indoor unit) ..106...
  • Page 248 Specifications are subject to change without environment. This challenge demands the eco design prior notice. Daikin Europe N.V. explicitly rejects any liability for any direct or and development of a wide range of products and an indirect damage, In the broadest sense, arising from or related to the use energy management system, resulting in energy and/or interpretation of this publication.

This manual is also suitable for:

Atks20cvmb(9)Atks20dvmbFtn20cvmb9Ftks25cvmb(9)(8)Atks25dvmbAtks25cvmb(9) ... Show all

Table of Contents