Page 1 SiBE04 - 624 Inverter Pair Wall Mounted Type E-Series [Applied Models] Inverter Pair : Heat Pump...
Page 2 SiBE04-624 Inverter Pair E-Series Heat Pump Indoor Units FTXR28EV1B FTXR42EV1B FTXR50EV1B Outdoor Units RXR28EV1B RXR42EV1B RXR50EV1B Table of Contents...
Page 3: Table Of Contents
SiBE04-624 1. Introduction .................... vi 1.1 Safety Cautions ..................vi Part 1 List of Functions ..............1 1. Functions....................2 Part 2 Specifications ..............3 1. Specifications ..................4 Part 3 Printed Circuit Board Connector Wiring Diagram ..... 7 1. Printed Circuit Board Connector Wiring Diagram........8 1.1 Indoor Unit....................8 1.2 Outdoor Unit ...................10 Part 4 Function and Control............
Page 4 SiBE04-624 3. Control Specification ................62 3.1 Frequency Control..................62 3.2 Preheating Operation (Quick Warming Function) ........63 3.3 Four-way Valve Operation..............64 3.4 Compressor Start up Protection .............65 3.5 Fan Speed Control for Outdoor Unit............66 3.6 Fin Thermistor Control................66 3.7 Input Current Control................67 3.8 Peak-cut Control..................68 3.9 Indoor Coil Freeze-up Protection ............69 3.10 Dew Prevention ..................70...
Page 5 SiBE04-624 2.9 Fan Motor System (DC Motor) Fault ............153 2.10 Streamer Unit Fault ................155 2.11 Thermistor System Fault ..............157 2.12 Front Panel Open / Close Fault............158 2.13 Humidity Sensor Fault ................159 2.14 Signal Transmission Error (Indoor Unit - Outdoor Unit) .......160 2.15 Incompatible Power Supply between Indoor Unit and Outdoor Unit ..162 2.16 Incomplete Setting for Hose Length .............163 2.17 Outdoor Unit PCB Fault................164...
Page 6 SiBE04-624 Part 7 Removal Procedure ............215 1. Indoor Unit...................216 1.1 Removal of the Air Filters / Front panel..........216 1.2 Removal of the Upper Panel ..............222 1.3 Removal of the Front Grille ..............225 1.4 Removal of the Assembly of the Open/Close Mechanism ....228 1.5 Removal of the Assembly of the Reduction Motor .......230 1.6 Removal of the Electrical Box ..............233 1.7 Removal of the PCB................238...
Page 7 SiBE04-624 Index ..................... i Drawings & Flow Charts ............... iii Table of Contents...
Page 8: Introduction
SiBE04-624 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 9: Cautions Regarding Products After Repair
Introduction SiBE04-624 Caution 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 10: Inspection After Repair
SiBE04-624 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.
Page 11: Using Icons
Introduction SiBE04-624 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 12: Part 1 List Of Functions
SiBE04-624 Part 1 List of Functions 1. Functions....................2 List of Functions...
Page 13: Functions
Functions SiBE04-624 1. Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — Virustatic Functions Operation Limit for Cooling (°CDB) Basic –20 Function Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 14: Part 2 Specifications
SiBE04-624 Part 2 Specifications 1. Specifications ..................4 Specifications...
Page 15: Specifications
Specifications SiBE04-624 1. Specifications 50Hz 220-230-240V Indoor Units FTXR28EV1B FTXR42EV1B Model RXR28EV1B RXR42EV1B Outdoor Units Cooling Heating Cooling Heating 2.8 (1.55~3.60) 3.6 (1.30~5.00) 4.2 (1.55~4.60) 5.1 (1.30~5.60) Capacity Btu/h 9,600 (5,300~12,300) 12,300 (4,400~16,400) 14,300 (5,300~15,700) 17,400 (4,400~19,100) Rated (Min.~Max.) kcal/h 2,410 (1,330~3,100) 3,100 (1,120~4,130) 3,610 (1,330~3,960)
Page 16 SiBE04-624 Specifications 50Hz 220-230-240V Indoor Units FTXR50EV1B Model RXR50EV1B Outdoor Units Cooling Heating 5.0 (1.55~5.50) 6.0 (1.30~6.20) Capacity Btu/h 17,100 (5,300~18,800) 20,500 (4,400~21,200) Rated (Min.~Max.) kcal/h 4,300 (1,330~47,300) 5,160 (1,120~5,330) Moisture Removal — Running Current (Rated) 7.2-7.1-7.0 7.4-7.3-7.2 Power Consumption 1,460 (260~1,800) 1,510 (230~1,770) Rated (Min.~Max.)
Page 17 Specifications SiBE04-624 Room Air Conditioners E-Series...
Page 18: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE04-624 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........8 1.1 Indoor Unit....................8 1.2 Outdoor Unit ...................10 Printed Circuit Board Connector Wiring Diagram...
Page 19: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram SiBE04-624 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors A1P (Control PCB) 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S32 Connector for heat exchanger thermistor (R1T) 4) S41, S51 Connector for swing motor (horizontal, vertical) 5) S43...
Page 20 SiBE04-624 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB LED A (R5944) PCB(2): Display PCB PCB(3): Signal Receiver / Transmitter PCB LED2 LED3 (R5946) (R5945) PCB(4): Humidity sensor PCB PCB(5): High Voltage Unit PCB S402 S401 Humidity sensor S403 (R5948)
Page 21: Outdoor Unit
Printed Circuit Board Connector Wiring Diagram SiBE04-624 Outdoor Unit Connectors 1) S20 Connector for electronic expansion valve coil 2) S21 Connector for rotor motor 3) S22 Connector for damper motor 4) S45 Connector for thermal fuse 5) S70 Connector for DC fan motor 6) S72 Connector for humidification fan motor 7) S80...
Page 22 SiBE04-624 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB FU3 (30A) FU2 (3.15A) FU1 (3.15A) LED A S501 LED5 + 5V (R5949) Printed Circuit Board Connector Wiring Diagram...
Page 23 Printed Circuit Board Connector Wiring Diagram SiBE04-624 Printed Circuit Board Connector Wiring Diagram...
Page 24: Part 4 Function And Control
SiBE04-624 Part 4 Function and Control 1. Description of Operation ...............15 1.1 Indoor Unit....................15 1.2 Outdoor Unit ...................16 2. Main Functions..................17 2.1 “URURU” Humidifying / Humid Heating Operation.........17 2.2 “SARARA” Drying Operation ..............26 2.3 Comfort Sleep Operation................28 2.4 MOISTURIZING Operation ..............30 2.5 Automatic Operation................31 2.6 Comfort Airflow Mode................32 2.7 Cooling Breeze Operation ..............34...
Page 25 SiBE04-624 3.12 Discharge Pipe Temperature Control.............72 3.13 Automatic Defrosting ................73 3.14 Electronic Expansion Valve Control ............75 Function and Control...
Page 26: Description Of Operation
SiBE04-624 Description of Operation 1. Description of Operation Indoor Unit (Input) (Output) Indoor unit Room temperature Temperature Indoor fan Fan motor thermistor control control Transmit signals to outdoor unit to When the air flow rate is set "auto" change the frequency of the air flow rate will automatically compressor according to the be adjusted according to the...
Page 27: Outdoor Unit
Description of Operation SiBE04-624 Outdoor Unit (Input) (Output) Outdoor unit Discharge pipe Compressor thermistor Compressor ON/OFF control Outdoor air Compressor 4-way valve thermistor capacity control Frequency control 3 min. stand-by Heat exchanger function Fan motor thermistor Defrost control Humidifying Electronic thermistor Switches to cooling cycle and defrosts.(Outdoor fan stops) expansion valve...
Page 28: Main Functions
SiBE04-624 Main Functions 2. Main Functions “URURU” Humidifying / Humid Heating Operation Operation "URURU" Humidifying Humid Heating (R5951) ∗ Refer to the operation manual for details. Features A world first new humidifying method has adopted What is new in this method is to intake vapor in the outdoor air with the hygroscopic element mounted in outdoor unit, and send indoors.
Page 29 Humidity control The FTXR-E series model performs the humidifying operation, targeting the humidity level of 40 to 50%. (You can select the remote controller setting from Low, Standard, High and Continue. The target humidity (%) cannot be set.)
Page 30 SiBE04-624 Main Functions How to Check the You can check whether the humidifying unit is in good working order. If you set “the humidifying only test operation” (refer to the installation manual for details), you can check even beyond the Motion of range of the conditions for humidifying operation mentioned above.
Page 31 Main Functions SiBE04-624 Time chart for Approx. 1min. after heating operation start up, it repeats humidifying and drying alternately (to protect condensation for inside the hose). humidifying operation control Heating Approx. 1min operation Approx. 3min Humidifying fan damper Hygroscopic 15 sec. 15 sec.
Page 32 SiBE04-624 Main Functions Humidification The humidifying of this system is different from that of the normal humidifier. Therefore, the humidifying performance varies with the outdoor temperature or installation condition. performance by Sufficient humidifying capacity may not be attained depending on the weather condition in outdoor operation.
Page 33 Main Functions SiBE04-624 Reachable • The ability of humidification drops when the outdoor temperature and humidity are low. 28 class humidity by outdoor condition Condition; Model:FTXR28EV1B Indoor temperature setting:20°C Airflow rate:Max Room volume:70m Air change rate:0.5/hour humidifying hose length:7.5m Outdoor temperature (°C) (R5957) 42 class Condition;...
Page 34 SiBE04-624 Main Functions 50 class Condition; Model:FTXR50EV1B Indoor temperature setting:20°C Airflow rate:Max Room volume:120m Air change rate:0.5/hour humidifying hose length:7.5m Outdoor temperature (°C) (R5959) Performance The max. piping length is set to 10 m, but the humidifying performance varies with the length of the humidifying hose.
Page 35 Main Functions SiBE04-624 Reference Room humidity (discharged air humidity) by ventilation cycle (16m , hose length: 4m, 28 class) 1. Outdoor temp. 0°CDB, 50% RH 100% Room temperature 17˚C 20˚C 23˚C Ventilation cycle (times/h) (R3335) 2. Outdoor temp. 7°CDB, 87% RH 100% Room temperature 17˚C...
Page 36 SiBE04-624 Main Functions Room humidity (discharged air humidity) by outdoor temperature (16m , hose length: 4m, ventilation cycle: 0.75 times/h, 28 class) 1. Room temp. 17°CDB 100% Outdoor relative humidity 80%RH 60%RH 40%RH Outdoor temperature(˚C) (R3922) 2. Room temp. 20°CDB 100% Outdoor relative humidity 80%RH...
Page 37: Sarara" Drying Operation
Main Functions SiBE04-624 “SARARA” Drying Operation Operation Dry Cooling "SARARA" Drying (R5961) ∗ Refer to the operation manual for details. Features Reheating dehumidifying method is applied. Powerful evaporator eliminates the humidity in your room exclusively. Dry cool air is mixed with warm air from the reheater, thereby blowing in optimal and comfortable dry air.
Page 38 SiBE04-624 Main Functions Differences on "dehumidification" and "cooling dehumidification" operation “SARARA” Drying Dry Cooling Method Puts a pressure reducing device (solenoid valve) in As is the cooling mechanism, the Dry Cooling the center of the heat exchanger of indoor unit to Operation raises latent heat capacity with separate it into upper and lower side.
Page 39: Comfort Sleep Operation
Main Functions SiBE04-624 Comfort Sleep Operation Operation Set the time to wake up. COMFORT SLEEP (R5965) Effective mode for COMFORT SLEEP operation • Cooling • Dry cooling • Moisture cooling • Heating • Humid heating • Moisture heating ∗ Refer to the operation manual for details. Features Outline of function The temperature is controlled in unique V-shape pattern within the range of about 2°C upper...
Page 40 SiBE04-624 Main Functions Human sleep Sleep cycle and change in body temperature Temperature shift (˚C) Sharp lowering of Maximum difference body temperature Rising of body of change in body Sleep cycle after falling asleep temperature before temperature wake-up Awakening REM sleep Smooth shift to awakening Deep sleep...
Page 41: Moisturizing Operation
Main Functions SiBE04-624 MOISTURIZING Operation Operation MOISTURIZING (R5967) Effective mode for MOISTURE COOLING • Cooling • Dry cooling Effective mode for MOISTURE HEATING • Heating • Humid heating ∗ Refer to the operation manual for details. Features “Relatively high humidity” setting, “Comfort Airflow Mode” giving no airflow to the body, and “emission of vitamins and hyaluronic acid”...
Page 42: Automatic Operation
SiBE04-624 Main Functions Automatic Operation Operation AUTO operation (R5985) ∗ Refer to the operation manual for details. Features 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 43: Comfort Airflow Mode
Main Functions SiBE04-624 Comfort Airflow Mode Operation The indication will change every time “ ” is pressed. Displays COMFORT Displays COOLING Indication disappears AIRFLOW operation BREEZE operation Comfort Airflow (R5968) Effective mode for comfort airflow mode • Heating • Humid heating •...
Page 44 SiBE04-624 Main Functions Feel air on heating When comfort airflow mode is carried out in heating · · · Air conditioner Air conditioner Comfortable radiant heating has realized! (R3356) Note In heating operation, it takes time to transmit heat to a distant place because the airflow direction is controlled not to blow direct on human.
Page 45: Cooling Breeze Operation
Main Functions SiBE04-624 Cooling Breeze Operation Operation The indication will change every time “ ” is pressed. Displays COMFORT Displays COOLING Indication disappears AIRFLOW operation BREEZE operation Cooling breeze (R5969) Effective mode for cooling breeze airflow • Cooling • “SARARA” drying •...
Page 46: Power-Airflow Dual Flaps
SiBE04-624 Main Functions Power-airflow Dual Flaps Triple air flow by the combination with wide-angle louvers UP/DOWN (AUTOMATIC) COOLING HEATING AIR PURIFYING DRY COOLING HUMID HEATING VENTILATION HUMIDIFYING (INDIVIDUAL OPERATION) 15° 20° 15° 30° 25° 45° 60° 70° 55° 55° 55° 70°...
Page 47: Wide-Angle Louvers
Main Functions SiBE04-624 Wide-angle Louvers Wider airflow eliminates disagreeable irregular temperature distribution. For the right and left flaps, the wide-angle louver which produces wider airflow is adopted. Since it veers flexibly and swings horizontally at a wide angle, comfortable airflow spreads to every corner of the room.
Page 48: 3-D Airflow
SiBE04-624 Main Functions 2.10 3-D Airflow Alternative swing of flaps in vertical and horizontal directions circulates the airflow to every corner of the room and prevents uneven temperature distribution. Use of the 3-D airflow control prevents uneven temperature distribution in the whole room. Particularly, the comfortable zone 10 cm above the floor is widened 1.5 times of the conventional zone.
Page 49: Powerful Operation
Main Functions SiBE04-624 2.11 POWERFUL Operation Operation POWERFUL (Cannot be used while the unit is not running.) (R5971) Effective mode for POWERFUL COOLING • Cooling • Dry cooling • Moisture cooling Effective mode for POWERFUL HEATING • Heating • Humid heating •...
Page 50: Indoor Unit Quiet Operation
SiBE04-624 Main Functions 2.12 Indoor Unit Quiet Operation Features Forced dropping of the fan tap decreases the airflow rate and reduces airflow noise. (Noise is reduced by about 3 dB as compared to that in L tap.) Note Airflow rate can not be set. Since the performance is somewhat lowered as compared to that in normal operation (70% under rated conditions), the room may not be cooled (or heated) when this operation is used for a long time.
Page 51: Monitor Brightness Setting
Main Functions SiBE04-624 2.14 Monitor Brightness Setting The brightness of the multi-colored indicator lamp can be adjusted HIGH, LOW, or OFF. It is convenient when it is excessively bright while asleep. Multi-colored indicator lamp (R5990) ∗ Refer to the operation manual for details. 2.15 Information Display Operation INFORMATION...
Page 52: Mold Proof Operation
SiBE04-624 Main Functions 2.16 MOLD PROOF Operation This is an integrated naming of functions such as inside drying, moist air exhaustion, mold- prevention stick. Drying inside the air conditioner prevents mold or odors to be generated. Operation Operation can be selected from automatic / manual. Auto operation (approximately once every 2 weeks) If the unit is set to “MOLD PROOF ON”, the MOLD PROOF operation will start automatically...
Page 53 Main Functions SiBE04-624 Inside Drying 1. Drained water discharge 2. Inside drying operation Drained water in drain pan is discharged. After the drained water discharged, the moisture etc. which are left on drain pan or heat exchanger are dried by evaporation. Exhausting Moisture 3.
Page 54: Mold Proof Stick
SiBE04-624 Main Functions 2.17 Mold Proof Stick Features Drain pan which prevents mold proliferation The drain pan of the main unit which easily goes moldy is equipped with a “Stick” having mildew-proof, antibacterial and antivirus effect. Mold proof stick Drain pan (R5104) Since mildew-proof, antibacterial and antivirus agent of silver group which is the compound of highly safe titanium oxide and silver is used as a single agent, drain water is not affected by this...
Page 55: Mold Shock Operation
Without mold shock operation With mold shock operation Fewer molds grow as compared with The test was conducted at DAIKIN’s lab with use of the mold in the case without Mold Shock Operation. sensor of Environmental Biological Research Institute. (R5107)
Page 56 SiBE04-624 Main Functions Comparison with cooling operation and mold shock operation Normal cooling operation The humidity in the room returns to original level when cooling operation is stopped. Humidity Cooling start Cooling stop Time Growth of mold Mold grows according to the humidity Time (R5109)
Page 57 Main Functions SiBE04-624 Reference Effect MOLD SHOCK operation. <27˚C 75-85%, reheating dehumidifying (-3˚C)> Humidity% Without mold shock Mold before mold operation shock operation Humidity (indoor) Humidity without mold shock operation Outdoor temperature Temperature (indoor) With mold shock operation Humidity (indoor) Outdoor temperature Temperature (indoor)
Page 58: Home Leave Ventilation
SiBE04-624 Main Functions 2.19 HOME LEAVE Ventilation Operation HOME LEAVE VENTILATION (R5976) ∗ Refer to the operation manual for details. Ventilate your room while you are out This function refreshes your room by ventilating while you are out. Operation To take a fresh air from outdoors via outdoor unit, air is heated with a heater on humidification unit contained in the outdoor unit to decompose exhaust gas components (NOx) and the like, and passed through air intake filter to eliminate pollens and mold.
Page 59: Flash Streamer Air Purifying Operation
The technology for the real air purifier is adopted for the air conditioner. Our original technology “Flash Streamer” system used for our Daikin’s air purifiers is incorporated. This technology realizes the air purifying exceeding far from the air purifying performance of the normal air conditioner.
Page 60 The formaldehyde concentration in the laboratory (10 m ) at 0.5-time ventilation and the initial concentration setting of 0.3 ppm (Observed by Daikin using the FTXR28E) (Nozaki laboratory, Graduate Course of Health and Society System, Tohoku Bunka Gakuen University) (R5983)
Page 61 Ammonia : Pet odor, Bathroom odor Methyl Mercaptane : Garbage odor, Rot odor Trimethylamine : Fish odor Hydrogen Sulfide : Egg odor Persist rate of odor ingredients in a box of 1m , operating FTXR42E(Daikin result) (R5984) Ammonia Acetaldehyde Acetic Acid...
Page 62: Fresh Air Supply Ventilation
SiBE04-624 Main Functions 2.21 Fresh Air Supply Ventilation Operation FLASH STREAMER AIR PURIFYING FLASH STREAMER AIR PURIFYING FLASH STREAMER AIR PURIFYING FRESH AIR SUPPLY VENTILATION Strong FRESH AIR SUPPLY VENTILATION FRESH AIR SUPPLY VENTILATION operation (R5977) ∗ Refer to the operation manual for details. Features Air Supply Ventilation The air supply ventilation system using only fresh air.
Page 63 Main Functions SiBE04-624 Ventilation System The ventilation type is mainly divided into two. The convenient system is supply ventilation. Supply Ventilation Exhaust Ventilation Fresh Air Supply Draft (R5979) - Quiet because the ventilation fa is located in the - Operation noise is heard because the ventilation outdoor unit fan is located in the room.
Page 64: Wipe-Clean Flat Panel
SiBE04-624 Main Functions 2.22 Wipe-clean Flat Panel It wipes off dirt in an instant. The grill-less panel is easy to clean and can be dismounted easily for washing. Dismount the panel in the procedure as mentioned below, wipe it lightly with soft cloth impregnated with lukewarm water or cold neutral detergent solution and dry it in the shade.
Page 65: Timer Operation
Main Functions SiBE04-624 2.24 TIMER Operation 2.24.1 24-hour ON/OFF Timer Operation Set the time ON/OFF timer Cancel (R5986) ∗ Refer to the operation manual for details. Features Time can be set in the unit of 10 min. When the 24-hour ON/OFF is set, the indication of present time disappears. Time is kept in memory in the next operation unless it is cancelled.
Page 66: Night Set Mode
SiBE04-624 Main Functions 2.25 Night Set Mode When you set the COUNTDOWN OFF TIMER or OFF TIMER, the unit is operated automatically in night set mode. Cooling / Dry cooling Temperature setting Temperature setting 1 hour Timer operation Operation stops Night set circuit ON Temperature shift at the set hours...
Page 67: Table For Special Modes
Main Functions SiBE04-624 2.26 Table for Special Modes Operation of indoor unit ON/OFF button and buttons of remote controller To enter a specific mode, press one of the buttons below for more than 5 sec. A. Diagnosis mode [CANCEL] button [CANCEL] button or leave it for 60 sec.
Page 68 SiBE04-624 Main Functions F. For humidifying hose length setting(*), refer to page 93. G. In forced humidifying drying mode, drying operation continues for approx. 30 min. for service. Start this operation after removing all moisture inside the hose. During forced drying operation, cooling, heating or dehumidifying operation is unavailable. H.
Page 69: Thermostat Control
Main Functions SiBE04-624 2.27 Thermostat Control Outline When COOLING or HEATING mode is selected with the remote controller, the micro computer prevents the unit from turning OFF until the requested room temperature could be obtained. Detail In the table below you can find the thermostat ON and OFF conditions for a set point of 21°C. Monitoring -->...
Page 70: Fan Speed Control For Indoor Units
SiBE04-624 Main Functions 2.28 Fan Speed Control for Indoor Units Control mode The airflow can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through speed control and Hall IC control. Phase steps Speed control and fan speed control contains different steps: Step...
Page 71 Main Functions SiBE04-624 Heating Room Indoor heat exchanger temperature area temp.area Room temperature area Set point - room temperature –1.5 A –1.0 B –0.5 C 0.5 E 1.0 F 1.5 G 2.0 H 2.5 I 3.0 J 3.5 K 4.0 L (R5926) The value will increases when the operation starts.
Page 72: Draft Prevention (Hot Start)
SiBE04-624 Main Functions 2.29 Draft Prevention (HOT Start) Outline Draft prevention control is done to prevent a cold draft feeling when the unit is started up in heating operation. This will happen if the indoor coil temperature drops. Detail The outdoor unit will prevent a cold draft by monitoring the indoor heat-exchanger thermistor. It will increase the minimum compressor frequency if the indoor heat exchanger drops below 33°C.
Page 73: Control Specification
Control Specification SiBE04-624 3. Control Specification Frequency Control Outline Once the timers of the compressor start-up have elapsed, the unit will determine its compressor frequency out of the following parameters; 1. ∆D: The difference between the room temperature and the set-point. 2.
Page 74: Preheating Operation (Quick Warming Function)
SiBE04-624 Control Specification Preheating Operation (Quick Warming Function) Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the discharge pipe temperature. Detail On condition The preheating operation starts when the discharge pipe temperature drops below 10°C. At that time, the inverter in open phase operation starts.
Page 75: Four-Way Valve Operation
Control Specification SiBE04-624 Four-way Valve Operation Outline Because the four-way valve only operates properly when there is an adequate pressure difference, the four-way valve compensation function has been implemented to insure this minimal pressure difference. Detail The four-way valve compensation function insures a good four-way valve operation by demanding a certain minimal operation frequency for a certain time.
Page 76: Compressor Start Up Protection
SiBE04-624 Control Specification Compressor Start up Protection Detail The gradual build-up of the upper operation frequency is illustrated in the graph below. Frequency (Hz) FCG4 FCG3 FCG2 FCG1 Time (sec) TCG1 TCG2 TCG3 TCG4 (R5908) Fig. : Compressor protection function graph. Timers and frequencies for the compressor protection function RXR(28-50) Cooling...
Page 77: Fan Speed Control For Outdoor Unit
Control Specification SiBE04-624 Fan Speed Control for Outdoor Unit Outline The fan speed control regulates the speed of the outdoor fan. Detail Fan control is carried out according to the following conditions. 1. Fan ON control for electric component cooling fan 2.
Page 78: Input Current Control
SiBE04-624 Control Specification Input Current Control Detail Compressor Stop Stop Zone Step down Zone Steady Zone Return Zone (R5907) Cooling Heating Class I1 (A) I2 (A) 10.0 10.5 10.5 10.5 Stop zone After 5 seconds in this zone the compressor is stopped *I2 has the cooling and heating current, respectively.
Page 79: Peak-Cut Control
Control Specification SiBE04-624 Peak-cut Control Outline In heating operation, malfunctioning of the unit (for example dirty filters) can cause the discharge pressure to rise excessively and reach unacceptable levels. To avoid this, peak-cut control will monitor the condensing temperature and when necessary decrease the operating frequency in an attempt to lower the discharge pressure at an early stage.
Page 80: Indoor Coil Freeze-Up Protection
SiBE04-624 Control Specification Indoor Coil Freeze-up Protection Outline During cooling or dry operation, a malfunction of the unit may cause the indoor heat exchanger's temperature to drop excessively. To prevent the indoor heat exchanger from freezing up, the freeze protection function will reduce the compressor's maximum operation frequency.
Page 81: Dew Prevention
Control Specification SiBE04-624 3.10 Dew Prevention Outline Cooling the air around us means that the air is dehumidified (condensation of water on the coil). But because the air is cooled down, less water can be absorbed by the air and as a consequence the relative humidity of the air rises.
Page 82: Liquid Compression Protection 2
SiBE04-624 Control Specification 3.11 Liquid Compression Protection 2 Outline The function will ensure a pressure differential between the high pressure and the low pressure. This is required when cooling with low outdoor ambient temperature because HP gets weak and you will have small capacity and a high power input. The compressor stops according to the conditions of the outdoor ambient temperature and the outdoor heat exchanger temperature.
Page 83: Discharge Pipe Temperature Control
Control Specification SiBE04-624 3.12 Discharge Pipe Temperature Control Outline Overheating has a negative influence on the operating lifetime of a compressor. That's why this function will limit the maximum operating frequency of the compressor if deemed necessary. Detail Discharge pipe temperature (°C) Stop 118 - correction value (a) 108 - correction value (a)
Page 84: Automatic Defrosting
SiBE04-624 Control Specification 3.13 Automatic Defrosting Defrost Control Start Condition Heating mode 6 or more minutes passed since the compressor started its operation The cumulative time of heating operation reached 25 minutes or more The state that the outdoor heat exchanger temperature <...
Page 85 Control Specification SiBE04-624 Defrosting Time Chart 64Hz 30Hz Frequency 120sec. 50sec. 620sec. 70sec. Compressor Four way valve 8sec. 8sec. 450pps Open control 400pps Electronic expansion 200pps valve opening (R6030) Function and Control...
Page 86: Electronic Expansion Valve Control
SiBE04-624 Control Specification 3.14 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed Electronic expansion valve is fully closed when turning on the power. Pressure equalizing control Open Control Electronic expansion valve control when starting operation Control when frequency changed...
Page 87: Heating
Control Specification SiBE04-624 3.14.2 Control when Starting Outline Obviously when the unit is switched on, some adjustments to the expansion valve opening have to be made in order to prevent excessive heating or moisture. Cooling x ∆F EV = K evopf evopdce evopdoa...
Page 88 Because of the direct link between the SH and the discharge temperature (see Fig. target discharge temperature), a control on the discharge temperature was made to be one of the main control systems of Daikin air-conditioners. The discharge temperature and SH are regulated by the expansion valve.
Page 89 Control Specification SiBE04-624 3.14.5 Pressure Equalization Control Outline The pressure difference between the condenser and evaporator works as an extra load when restarting the compressor. To limit the load on the compressor when restarting it and consequently limit the starting current, a pressure-equalization is performed after deactivating the compressor.
Page 90 SiBE04-624 Control Specification 3.14.6 Control for Abnormally High Discharge Temperature Outline An abnormally high discharge temperature is an indication for a too high suction temperature or super-heat. Making adjustments to the expansion valve opening can solve this problem. Detail Increasing the expansion valve opening will increase the refrigerant flow through the evaporator and decrease the superheat and the discharge temperature.
Page 91 Control Specification SiBE04-624 Function and Control...
Page 92: Part 5 System Configuration
SiBE04-624 Part 5 System Configuration 1. Installation Manual ................82 1.1 Indoor Units ....................82 1.2 Outdoor Units ..................96 2. System Configuration................106 3. Instruction....................107 3.1 Safety Precautions ................107 3.2 Names and Functions of Parts .............108 3.3 Preparation before Operation...............110 3.4 Cooling · “SARARA” DRYING Operation ..........112 3.5 Heating ·...
Page 93: Installation Manual
Installation Manual SiBE04-624 1. Installation Manual Indoor Units Safety Precautions • Read these Safety Precautions carefully to ensure correct installation. • This manual classifies the precautions into WARNING and CAUTION. Be sure to follow all the precautions below: they are all important for ensuring safety. WARNING....Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
Page 94: Choosing An Installation Site
SiBE04-624 Installation Manual Accessories Mounting plate Air supply filter frame AAA dry-cell batteries Indoor unit fixing screws Deodorizing filter for streamer Operation manual (M4 × 12L) Titanium apatite photocatalytic Wireless remote controller Installation manual air-purifying filter Air supply filter Remote controller holder Choosing an Installation Site •...
Page 95: System Configuration
Installation Manual SiBE04-624 Indoor Unit Installation Drawings Removing and installing indoor unit. • Installation method 1) Using the marks (3 locations) on top of the indoor unit, attach the mounting plate hooks Mounting Mounting onto the indoor unit. plate plate 2) Attach the tabs on the bottom frame onto the Bottom frame...
Page 96: Installation Tips
SiBE04-624 Installation Manual Installation Tips Removing and installing front panel. • Removal method Rotating shaft Rotating shaft 1) Open the front panel. 2) Spread out the shaft hole on the left side and remove the rotating shaft. Spread out the shaft hole on the right side as well and remove the rotating shaft.
Page 97 Installation Manual SiBE04-624 Installation Tips Removing and installing the front grille. • Removal method Fig. 1 Horizontal louver Top horizontal louver 1) Remove the front panel, air filter and upper panel. When removing or 2) Fully open the top and bottom horizontal louvers. attaching the front grille, pay attention to open or (See Fig.
Page 98: How To Replace The Drain Plug And Drain Hose
SiBE04-624 Installation Manual How to replace the drain plug and drain hose. • Replacing onto the left side 1) Remove the insulation fixing screws on the right to Drain hose attachment position remove the drain hose. * The drain hose is on the back of the unit. 2) Reattach the insulation fixing screw on the right as it was.
Page 99: Indoor Unit Installation
Installation Manual SiBE04-624 Indoor Unit Installation Installing the mounting plate. • The mounting plate should be installed on a wall which can support the weight of the indoor unit. 1) Temporarily secure the mounting plate to the wall, make sure that the panel is completely level, and mark the boring points on the wall.
Page 100 SiBE04-624 Installation Manual Laying piping, hoses, and wiring. • Connect the humidifying hose to the indoor unit duct. Piping bundle diagram See 5. Humidifying hose installation work for details. Inter-unit wiring • Lay the piping, drain hose and humidifying hose Gas pipe according to the orientation of the piping coming out of Drain hose...
Page 101 Installation Manual SiBE04-624 Indoor Unit Installation 4-4. Wall embedded piping. Inner wall Insert drain hose Follow the instructions given under to this depth so it won’t be pulled Left-side, left-back, or left-bottom piping out of drain pipe. Drain hose 1) Insert the drain hose to this depth so it won’t be 50mm or more pulled out of the drain pipe.
Page 102 SiBE04-624 Installation Manual Wiring. 1) Strip wire ends (15mm). 2) Match wire colours with terminal numbers on indoor and outdoor unit’s terminal blocks and firmly screw wires to the corresponding terminals. 3) Connect the earth wires to the corresponding terminals. 4) Pull wires to make sure that they are securely latched up, then retain wires with wire retainer.
Page 103: Drain Piping
Installation Manual SiBE04-624 Indoor Unit Installation 4) Remove the electric parts box cover. Fig. 2 (3 tabs) (Refer to Fig. 2) Electric parts box cover 4-1) Discharge the tab 3. 4-2) Pull up the electric parts box cover Tab 4 Guide rail slowly, discharge the tab 4, slide up, Tab 3...
Page 104 SiBE04-624 Installation Manual Setting the Humidifying Hose Length Setting the humidifying hose length. Matrix display • Set the humidifying hose length to ensure humidifying capacity. Use the remote controller to set the humidifying hose length. When doing this, power on the unit as communication is established between the unit and the remote controller.
Page 105: Refrigerant Piping Work
Installation Manual SiBE04-624 Refrigerant Piping Work Flaring the pipe end. (Cut exactly at 1) Cut the pipe end with a pipe cutter. right angles.) Remove burrs 2) Remove burrs with the cut surface facing downward Flaring so that the chips do not enter the pipe. Set exactly at the position shown below.
Page 106 SiBE04-624 Installation Manual Trial Operation and Testing Trial operation and testing. 1-1. Measure the supply voltage and make sure that it falls in the specified range. 1-2. Trial operation should be carried out in either cooling or heating mode. • In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.
Page 107: Outdoor Units
Installation Manual SiBE04-624 Outdoor Units Safety Precautions • Read these Safety Precautions carefully to ensure correct installation. • This manual classifies the precautions into WARNING and CAUTION. Be sure to follow all the precautions below: they are all important for ensuring safety. WARNING....Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
Page 108 SiBE04-624 Installation Manual Accessories Accessories supplied with the outdoor unit: Drain plug Installation Manual Humidifying hose Joint Elbow Binding band Precautions for Selecting the Location 1) Choose a place solid enough to bear the weight and vibration of the unit, where the operation noise will not be amplified. 2) Choose a location where the hot air discharged from the unit or the operation noise will not cause a nuisance to the neighbo rs of the user.
Page 109: Outdoor Unit Installation Drawings
Installation Manual SiBE04-624 Outdoor Unit Installation Drawings Precautions for humidifying hose installation work. • Moisture on the outdoor unit is brought to the indoor unit together with air around the outdoor unit during humidifying operation. Install the outdoor unit in a clean and calm location. •...
Page 110: Installation Guidelines
SiBE04-624 Installation Manual Installation Guidelines • Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation guidelines below. • For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less. Wall facing one side Walls facing two sides More than 50...
Page 111: Outdoor Unit Installation
Installation Manual SiBE04-624 Outdoor Unit Installation Flaring the pipe end. (Cut exactly at 1) Cut the pipe end with a pipe cutter. right angles.) Remove burrs 2) Remove burrs with the cut surface facing Flaring downward so that the chips do not enter the pipe. Set exactly at the position shown below.
Page 112: Purging Air And Checking Gas Leakage
SiBE04-624 Installation Manual Purging air and checking gas leakage. • When piping work is completed, it is necessary to purge the air and check for gas leakage. WARNING 1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle. 2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
Page 113 Installation Manual SiBE04-624 Outdoor Unit Installation Refilling the refrigerant. Check the type of refrigerant to be used on the machine nameplate. Precautions when adding R410A Fill from the liquid pipe in liquid form. It is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation. 1) Before filling, check whether the cylinder has a siphon attached or not.
Page 114: Pump Down Operation
SiBE04-624 Installation Manual Pump Down Operation In order to protect the environment, be sure to pump down when relocating or disposing of the unit. 1) Remove the valve cap from liquid stop valve and gas stop valve. 2) Carry out forced cooling operation. Gas stop valve Close 3) After five to ten minutes, close the liquid stop valve with a hexagonal wrench.
Page 115 Installation Manual SiBE04-624 Wiring WARNING 1) Do not use tapped wires, stranded wires (CAUTION (1)), extension cords, or starburst connections, as they may cause over- heating, electrical shock, or fire. 2) Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the terminal block.) Doing so may cause electric shock or fire.
Page 116: Test Run And Final Check
SiBE04-624 Installation Manual <Ground terminal installation> 1) Use the following method when installing a single core wire. Screw Flat washer A single core wire Arrow view 2) Use the following method when installing the round crimp-style terminal. Screw Screw Flat washer Round crimp- Flat washer Screw...
Page 117: System Configuration
System Configuration SiBE04-624 2. 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 118: Instruction
Incorrect work will cause electric shocks, fire etc. Do not attempt to install the air conditioner by your self. Incorrect For repairs and reinstallation, consult your Daikin dealer for advice work will result in water leakage, electric shocks or fire. For installa- and information.
Page 119: Names And Functions Of Parts
Instruction SiBE04-624 Names and Functions of Parts Names of Parts Indoor Unit Indoor Unit Streamer unit: (page 20-22.) Deodorizing filter for streamer (Black) Air inlet Front panel Upper panel Air filter (Light blue): (page 19.) Titanium apatite photocatalytic air-purifying filter (Black): (page 20-22.) Air supply filter (Yellow): (page 23.) Horizontal louver: (page 10.) Vertical louver:...
Page 120 SiBE04-624 Instruction Remote Controller Remote Controller Transmitter / Receiver Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) * The protection sheet is on the display to pro- tect against scratch.
Page 121: Preparation Before Operation
Instruction SiBE04-624 Preparation before Operation Preparation Before Operation To set the batteries Position + and 1. Press with a finger and slide the cover to take it off. – correctly! 2. Set two dry batteries (AAA). 3. Set the cover as before. •...
Page 122: To Set The Clock
SiBE04-624 Instruction To set the clock * Time cannot be set during unit operation. 1. Press “ ”. Do not hold the button. is displayed. blinks. 2. Press “ ” to set the clock to the present time. • Holding the button changes the time faster. 3.
Page 123: Cooling · "Sarara" Drying Operation
Instruction SiBE04-624 Cooling · “SARARA” DRYING Operation COOLING · “SARARA” DRYING Operation COOLING operation • To lower temperature 1. Press “ ”. Green • To lower temperature and humidity 2. Press “ ”. Yellow * It is recommended to switch to COOLING operation if you want to lower tempera- ture preferentially during DRY COOLING operation.
Page 124: Heating · "Ururu" Humidifying Operation
SiBE04-624 Instruction Heating · “URURU” HUMIDIFYING Operation HEATING · “URURU” HUMIDIFYING Operation HEATING operation • To raise temperature 1. Press “ ”. To raise temperature and humidity • 2. Press “ ”. Orange “URURU” HUMIDIFYING operation • To raise humidity 3.
Page 125: Auto / Moisturizing Operation
Instruction SiBE04-624 AUTO / MOISTURIZING Operation AUTO Operation After pressing the AUTO button, the air conditioner will operate according to room conditions in an automatic mode. 1. Press “ ”. < > AUTO • HEATING: Red • COOLING: Green • The color of the multi-colored indicator changes according to the actual operations.
Page 126: Adjusting Airflow Direction · Comfort Airflow Mode · Cooling Breeze · Airflow Rate
SiBE04-624 Instruction Adjusting Airflow Direction · Comfort Airflow Mode · Cooling Breeze · Airflow Rate ADJUSTING AIRFLOW DIRECTION · COMFORT AIR- FLOW MODE · COOLING BREEZE · AIRFLOW RATE More comfortable airflow is provided with airflow direction and airflow rate adjustment . To change vertical and horizontal airflow directions 1.
Page 127: Flash Streamer Air Purifying · Fresh Air Supply Ventilation Operation / Home Leave Ventilation
Instruction SiBE04-624 FLASH STREAMER AIR PURIFYING · FRESH AIR SUPPLY VENTILATION Operation / HOME LEAVE VENTILATION FLASH STREAMER AIR PURIFYING · FRESH AIR SUPPLY VENTILATION Operation < FLASH STREAMER AIR PURIFYING / The absorption power of the Titanium apatite photocatalytic air-purifying filter and >...
Page 128: Timer Operation
SiBE04-624 Instruction TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. The timer operates only one time. Set the timer for each use. COUNTDOWN OFF TIMER operation Set the time to stop.
Page 129: Comfort Sleep / Powerful Operation
Instruction SiBE04-624 3.10 COMFORT SLEEP / POWERFUL Operation COMFORT SLEEP Operation Controlling the room temperature supports comfort sleep and pleasant wake-up. • Check that the clock is correct. If not, set the clock to the present time. (page 6.) < >...
Page 130: Set Up
SiBE04-624 Instruction 3.11 SET UP SET UP Sets the unit operation and remote controller display according to your preference. for about 2 seconds. 1. Hold “ ” • The setup mode will be activated. 2. The item will change every time “ ”...
Page 131: Mold Proof Operation
Instruction SiBE04-624 3.12 MOLD PROOF Operation MOLD PROOF Operation Dries the inside of the unit to prevent mold and odors. Auto operation (approximately once every 2 weeks) If the unit is set to “MOLD PROOF ON”, the MOLD PROOF operation will start automat- ically after the unit has been run in “SARARA”...
Page 132: Mold Shock Operation / Information Display
SiBE04-624 Instruction 3.13 MOLD SHOCK Operation / INFORMATION DISPLAY MOLD SHOCK OUT Operation This mode dehumidifies the air in the room and prevents mold growth. Continuous drying operation lowers the room humidity rapidly. < > MOLD SHOCK OUT 1. Hold “ ”...
Page 133: Care And Cleaning
Instruction SiBE04-624 3.14 Care and Cleaning Care and Cleaning Quick reference for cleaning • Before cleaning, be sure to stop the operation and turn the breaker OFF. CAUTION • Do not touch the metal parts in the indoor unit. Doing so may cause injury. Front panel Wipe off if it gets dirty.
Page 134 SiBE04-624 Instruction Attaching and removing the front panel • Only open the front panel after turning the unit off. CAUTION Opening the panel during operation may cause the panel to fall off. 1. Open the front panel. Front panel • Placing a finger on the panel tab on either side of the front panel.
Page 135: Cleaning The Air Filter
Instruction SiBE04-624 Care and Cleaning Cleaning the air filter (If “ ” is displayed on the remote controller) 1. Open the front panel. • Open the front panel by placing a finger on the panel tab on either side Supporting of the front panel and then secure it using the supporting plate on the plate right.
Page 136 SiBE04-624 Instruction Attaching and removing the deodorizing filter for streamer, Titanium apatite photocatalytic air-purifying filter, streamer unit 1. Open the front panel and pull out the air filter. (page 19.) Titanium apatite Streamer unit photocatalytic air-purifying filter Deodorizing filter for streamer Removing Attaching 2.
Page 137 Instruction SiBE04-624 Care and Cleaning Cleaning the deodorizing filter for streamer, Titanium apatite photo- catalytic air-purifying filter and streamer unit (If “ ” is displayed on the remote controller) Attaching and removing each part (page 20.) Deodorizing filter for streamer / Titanium apatite photocatalytic air-purifying filter •...
Page 138 SiBE04-624 Instruction How to replace Deodorizing filter for streamer Titanium apatite photocatalytic air- (Once in about 3 years) purifying filter (Once in about 3 years) • Remove from the filter frame and replace the filter with a new one. • Discharge the 4 tabs of the filter frame and replace the filter with a new one.
Page 139 Instruction SiBE04-624 Care and Cleaning Attaching, cleaning and replacing the air supply filter (Clean once in about 3 months and replace once in about 1 year.) Cannot be washed with water. 1. Open the front panel to pull out the air fil- ter and Titanium apatite photocatalytic air- purifying filter.
Page 140: Before A Long Idle Period
SiBE04-624 Instruction NOTE The deodorizing filter for stream and the titanium apatite photocatalytic air-purifying filter should be cleaned regularly. We recommend replacing the filter in the following situations. • If it is damaged during cleaning because it is made of paper. •...
Page 141: Troubleshooting
Instruction SiBE04-624 3.15 Troubleshooting Trouble Shooting TROUBLE SHOOTING These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation • Operation does not start soon. This is to protect the air conditioner. •...
Page 142: Check Again
SiBE04-624 Instruction Check again. Please check again before calling a repair person. Case Check • Hasn’t a breaker turned OFF or a fuse blown? • The air conditioner does not operate. Isn’t it a power failure? • (Multi-colored indicator lamp is off.) Are batteries set in the remote controller? •...
Page 143: Call The Service Shop Immediately
Instruction SiBE04-624 Trouble Shooting Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner.
Page 144 SiBE04-624 Instruction FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC447A1, the temperature display sections on the main unit indicate corresponding codes. 1. When the CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temper- ature display section.
Page 145 Instruction SiBE04-624 System Configuration...
Page 146: Part 6 Service Diagnosis
SiBE04-624 Part 6 Service Diagnosis 1. Convenient Service Check Function ...........137 2. Troubleshooting ..................139 2.1 Error Code Indication by Remote Controller ........139 2.2 Air conditioner does not run..............141 2.3 Air conditioner runs but does not get cooling (heating)......143 2.4 When operation starts, safety breaker works.
Page 147 SiBE04-624 3.2 Installation Condition Check..............203 3.3 Outdoor Fan System Check (DC Motor) ..........203 3.4 Power Supply Waveform Check............204 3.5 Capacitor Voltage Check..............204 3.6 Main Circuit Electrolytic Capacitor Check ..........205 3.7 Refrigerant System Check ..............205 3.8 “Inverter Checker” Check ..............206 3.9 Power Transistor Check ...............207 3.10 Discharge Pressure Check..............208 3.11 Electronic Expansion Valve Check............209 3.12 Indoor Unit PCB Output Check ............210...
Page 148: Convenient Service Check Function
SiBE04-624 Convenient Service Check Function 1. Convenient Service Check Function Failure diagnosis with operation lamp The operation lamp on the display of the indoor unit flashes when any of the following failure is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions and the machine does not work.
Page 149 Convenient Service Check Function SiBE04-624 Failure diagnosis by LED indication The following failure diagnosis can be done by LED indication on the outdoor unit PCB. 1. The outdoor unit has 2 green LED(LED A, LED5) on the PCB. The flashing green LED indicates "in order" condition. The turned ON or OFF LED indicates the failure related to the microcomputer.
Page 150: Troubleshooting
SiBE04-624 Troubleshooting 2. Troubleshooting Error Code Indication by Remote Controller * Various cases may be possible. Code Unit Description Reference page Air conditioner does not run. Air conditioner runs but does not get cooling (heating). Basic Failure Diagnosis When operation starts, safety breaker works. Air conditioner makes big noise and vibration.
Page 151 Troubleshooting SiBE04-624 Code Unit Description Reference page Signal transmission error on outdoor unit PCB System Incompatible power supply between indoor unit and outdoor unit Indoor Incomplete setting for hose length – System Lights-out of microcomputer status lamp Service Diagnosis...
Page 152: Air Conditioner Does Not Run
SiBE04-624 Troubleshooting Air conditioner does not run. Method of Malfunction Detection Malfunction Decision Conditions Supposed Power supply is OFF Improper power supply voltage Causes Improper connection of wire Incorrect combination of indoor unit and outdoor unit Battery shortage of remote controller Invalid address setting Protection device works (dirty air filter, insufficient gas, over filling, mixed air, etc.)
Page 153 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the power supply plug inserted into the outlet Insert the power supply or the breaker for the power supply plug into the outlet.
Page 154: Air Conditioner Runs But Does Not Get Cooling (Heating)
SiBE04-624 Troubleshooting Air conditioner runs but does not get cooling (heating). Method of Malfunction Detection Malfunction Decision Conditions Supposed Incorrect temperature setting Incorrect combination of indoor unit and outdoor unit Causes Blocked air filter Insufficient power Refrigerant piping is too long Improper setting of piping length Defective field piping (squeezed, etc.) Service Diagnosis...
Page 155 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the set Thermostat off Set the temperature temperature correct? properly. Is there required installation space? Secure required space. (Isn't it short circuited?) Is the indoor unit compatible for...
Page 156: When Operation Starts, Safety Breaker Works
SiBE04-624 Troubleshooting When operation starts, safety breaker works. Method of Malfunction Detection Malfunction Decision Conditions Supposed Insufficient capacity of safety breaker Earth leakage breaker is too sensitive Causes Not exclusive circuit The supply voltage is not within rated voltage ±10%. The size of connecting wire is thin (indoor power supply unit) Air is mixed (over filling) Damaged outdoor unit PCB (short circuit)
Page 157 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. [Power supply] Check No.29 Refer to 212 Is the capacity of safety breaker as Replace the safety breaker specified? to a specified one.
Page 158: Air Conditioner Makes Big Noise And Vibration
SiBE04-624 Troubleshooting Air conditioner makes big noise and vibration. Method of Malfunction Detection Malfunction Decision Conditions Supposed Piping length is too short Mounting wall is too thin Causes Insufficient vibration prevention measures Deformation of the unit Improper quantity of refrigerant Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...
Page 159: Air Does Not Humidified Enough
Troubleshooting SiBE04-624 Air does not humidified enough. Method of Malfunction Detection Malfunction Decision Conditions Supposed Hose length is not set Incorrect setting Causes Short circuited at outdoor unit Blocked humidification filter Insufficient heat insulation of duct Indoor ventilation is made too often Ceiling is very high.
Page 160 Is the humidification hose Explain to the user to use proper? the proper hose specified by DAIKIN. Does the outdoor unit suck the Improve so as not to get exhausted air again by short-circuit. short-circuit? Many (screens, consecutives room ) many times are the room Explain to the user.
Page 161: Indoor Unit Pcb Fault
Troubleshooting SiBE04-624 Indoor Unit PCB Fault Remote Controller Display Method of Check zero-cross detection from the power supply of the indoor unit Malfunction Detection Malfunction When no zero-cross detection is performed in approximately 10 continuous seconds Decision Conditions Supposed Defective indoor unit PCB (Faulty EEPROM data) Improper connector connection Causes Defective indoor terminal board...
Page 162: Peak-Cut Control Or Freeze-Up Protection
SiBE04-624 Troubleshooting Peak-cut Control or Freeze-up Protection Remote Controller Display Method of Peak-cut control (high pressure control) During heating operation, the temperature detected by the indoor heat exchanger thermistor Malfunction 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 heat exchanger thermistor.
Page 163 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.2 Check air passages Refer to P.202 Is there any short-circuit? Reserve the space for the air passages. Check the air filter for dirtiness YES (dirty) Is it very dirty?
Page 164: Fan Motor System (Dc Motor) Fault
SiBE04-624 Troubleshooting Fan Motor System (DC Motor) Fault Remote Controller Display Method of The fan speed detected by the Hall IC during operation of high-pressure fan motor is used to determine abnormal fan operation. Malfunction Detection Malfunction When the detected fan speed is less than 50% of the HH tap under maximum fan motor rpm demanded Decision Conditions...
Page 165 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.18 Caution Turn off the power supply If the connector is Refer to P.210 (Turn off the breaker). disconnected while the power ON, the motor will be broken.
Page 166: Streamer Unit Fault
SiBE04-624 Troubleshooting 2.10 Streamer Unit Fault Remote Controller Display Method of Malfunction Detection Malfunction If the error repeats 3 times in air purifying operation. Clearing condition: Continuous run for about 2 minutes (normal). Decision Conditions Supposed Short circuit caused by the dust or drip of water on the streamer unit electrode part. Scratch or crack in the harness for the streamer unit.
Page 167 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Dust or drip of Clean the streamer unit. water is on the streamer unit. Does the multi-monitor LED blink about Clean the streamer unit.
Page 168: Thermistor System Fault
SiBE04-624 Troubleshooting 2.11 Thermistor System Fault C4, C9 Remote Controller Display Method of Thermistor fault is detected based on the temperature determined by each thermistor Malfunction Detection Malfunction When power is supplied and the input of thermistor is 4.96 V or more or 0.04 V or less * (for reference) Decision In case of 120 Ω...
Page 169: Front Panel Open / Close Fault
Troubleshooting SiBE04-624 2.12 Front Panel Open / Close Fault Remote Controller Display Method of Malfunction Detection Malfunction The system will be shut down when the error occurs twice. Decision Conditions Supposed Malfunction of the reduction motor Malfunction or deterioration of the front panel mechanism Causes Malfunction of the limit switch Troubleshooting...
Page 170: Humidity Sensor Fault
SiBE04-624 Troubleshooting 2.13 Humidity Sensor Fault Remote Controller Display Method of Sensor faulty is detected by input value. Malfunction Detection Malfunction When the input from a temperature sensor is 4.96 V or more or 0.04 V or less* Decision Conditions Supposed Improper connector connection Defective indoor control PCB...
Page 171: Signal Transmission Error (Indoor Unit - Outdoor Unit)
Troubleshooting SiBE04-624 2.14 Signal Transmission Error (Indoor Unit - Outdoor Unit) Remote Controller Display Method of The data sent from the outdoor unit is checked for problem. Malfunction Detection Malfunction When the data sent from the outdoor unit can not be received without error, or when the disable status of signal transmission continues for 15 sec.
Page 172 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the relay wire between the indoor unit and the outdoor unit for color and number Is there any improper Correct relay wire between wiring? * For the machine with stand-...
Page 173: Incompatible Power Supply Between Indoor Unit And Outdoor Unit
Troubleshooting SiBE04-624 2.15 Incompatible Power Supply between Indoor Unit and Outdoor Unit Remote Controller Display Method of Check the incompatible power supply between indoor unit and outdoor unit by using signal transmission. Malfunction Detection Method of In case that the indoor intake model is connected to outdoor intake model. Malfunction Detection Supposed...
Page 174: Incomplete Setting For Hose Length
SiBE04-624 Troubleshooting 2.16 Incomplete Setting for Hose Length Remote Controller Display Method of This fault occurs when the humidification hose length is not stored in the EEPROMs of the indoor unit and the outdoor unit. Malfunction (Hose length is not stored at initial power on.) Detection Malfunction When the humidification hose length is not stored in EEPROMs of the indoor unit and the...
Page 175: Outdoor Unit Pcb Fault
Troubleshooting SiBE04-624 2.17 Outdoor Unit PCB Fault Remote Controller Display Outdoor Unit LED Display Method of Detect within the programme of the microcomputer that the programme is in good running order. Malfunction Detect input of zero-cross signal. Detection Malfunction When the programme of the microcomputer is in bad running order. Zero-cross signal can not be detected.
Page 176: Ol Activation (Compressor Overload)
SiBE04-624 Troubleshooting 2.18 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 177: Compressor Lock
Troubleshooting SiBE04-624 2.19 Compressor Lock Remote Controller Display Outdoor Unit LED 5 5 ( - ) Display Method of Judging from current waveform generated when high-frequency voltage is applied to the compressor. Malfunction Detection Malfunction The machine is shut down when the fault count reaches 16. Clear condition: Continuous operation for 11 min.
Page 178: Dc Fan Lock
SiBE04-624 Troubleshooting 2.20 DC Fan Lock Remote Controller Display Outdoor Unit LED 5 5 ( - ) Display Method of Identify the fan motor system fault based on fan speed detected by Hall IC during high pressure fan motor running. Malfunction Detection Malfunction...
Page 179: Input Over Current Detection
Troubleshooting SiBE04-624 2.21 Input Over Current Detection Remote Controller Display Outdoor Unit LED 5 5 ( - ) Display Method of Detect an input overcurrent by checking the inverter power consumption or the input current detected by CT with the compressor running. Malfunction Detection Malfunction...
Page 180 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. *Input over current may be caused by improper wiring inside the machine. If the Check No.3 machine stops due to input over current after connecting or disconnecting wires to replace part, check wiring for proper connection.
Page 181: Four Way Valve Fault
Troubleshooting SiBE04-624 2.22 Four Way Valve Fault Remote Controller Display Outdoor Unit LED 5 5 ( - ) Display Method of The room temperature thermistor, the indoor heat exchanger thermistor, the outdoor air thermistor, and the outdoor heat exchanger thermistor are checked to see if they function within Malfunction their normal ranges in the operating mode.
Page 182 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.2 Does the coil Refer to P.202 of 4-way valve get out of Rectify it. place (loosen)? Is the Check No.12 harness disconnected from...
Page 183: Discharge Pipe Temperature Control
Troubleshooting SiBE04-624 2.23 Discharge Pipe Temperature Control Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of Discharge pipe temperature control (stop, frequency attenuation, etc.) is executed based on the temperature detected by the discharge pipe thermistor. Malfunction Detection Malfunction...
Page 184: High Pressure Control In Cooling
SiBE04-624 Troubleshooting 2.24 High Pressure Control in Cooling Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of During cooling, high pressure control (stop, frequency attenuation, etc.) is executed according to the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...
Page 185 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.2 Check installation space Refer to P.202 Check No. 3 Change the position of air Installation condition check discharge grille.
Page 186: Compressor Sensor System Fault
SiBE04-624 Troubleshooting 2.25 Compressor Sensor System Fault Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of Fault condition is identified by DC current which is detected before compressor startup. Malfunction Detection Malfunction When the DC current before compressor startup is other than 0.5 to 4.5 V (detected by converting the sensor output to voltage), or the DC voltage is 50 V or less.
Page 187: Damper Fault
Troubleshooting SiBE04-624 2.26 Damper Fault Remote Controller Display Outdoor Unit LED Display Method of Detected by the limit switch (LS) in the humidification unit. Malfunction Detection Malfunction Limit switch does not turn on or off when the operation of humidification unit starts or finishes.
Page 188: Position Sensor Fault
SiBE04-624 Troubleshooting 2.27 Position Sensor Fault Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of Startup failure of the compressor is identified by rpm information of the compressor and by electric component position detector. Malfunction Detection Malfunction When the compressor does not run for 15 sec.
Page 189 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.16 Check the power supply Refer to P.208 Check No. 16 Discharge pressure check Check No.29 Refer to P.212 Judge Replace stop valve.
Page 190: Dc Voltage / Dc Current Sensor Fault
SiBE04-624 Troubleshooting 2.28 DC Voltage / DC Current Sensor Fault Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of DC voltage or DC current sensor system fault is identified based on the compressor operation frequency and the input current detected by the product of DC current and DC voltage. Malfunction Detection Malfunction...
Page 191: Thermistor System Fault
Troubleshooting SiBE04-624 2.29 Thermistor System Fault P4, J3, J6, H9 Remote Controller Display Outdoor Unit LED Display Method of This fault is identified based on the thermistor input voltage to the microcomputer. A thermistor fault is identified based on the temperature detected by each thermistor. Malfunction Detection Malfunction...
Page 192 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn on the power supply again Check No.2 Refer to P.202 Does the remote Reconnect properly. controller display the error code again? Check No.2 Thermistor resistance check...
Page 193: Abnormal Temperature In Electrical Box
Troubleshooting SiBE04-624 2.30 Abnormal Temperature in Electrical Box Remote Controller Display Outdoor Unit LED Display Method of Temperature rise in the electrical box is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor off. Malfunction Detection Malfunction...
Page 194 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. (Note on resetting power supply) To reset the machine, power off status need to continue at least 30 sec. Check No.2 Refer to P.202 WARNING...
Page 195: Temperature Rise In Radiation Fin
Troubleshooting SiBE04-624 2.31 Temperature Rise in Radiation Fin Remote Controller Display Outdoor Unit LED Display Method of Temperature rise in the radiation fin is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor on. Malfunction Detection Malfunction...
Page 196 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power supply and WARNING turn it on again to get the system Check No.2 To cool down the electric started.
Page 197: Output Overcurrent
Troubleshooting SiBE04-624 2.32 Output Overcurrent Remote Controller Display Outdoor Unit LED Display Method of An output overcurrent 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 198 SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Troubleshooting Caution or parts damage may be occurred. *Output overcurrent may caused by improper wiring inside the machine. If the machine stops due to output overcurrent after connecting or disconnecting wires to replace part, check wiring for proper connection.
Page 199: Insufficient Gas
Troubleshooting SiBE04-624 2.33 Insufficient Gas Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of Gas shortage detection I: Gas shortage is detected by checking the input current value and the compressor running Malfunction frequency. If the gas is short, the input current is smaller than the normal value. Detection Gas shortage detection III: Gas shortage is detected by checking the difference between ambient temperature and heat...
Page 200 SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Troubleshooting Caution or parts damage may be occurred. Is the stop Check No.2 Open the stop valve. valve opened? Refer to P.202 Check gas leakage. Check No.17 Refer to P.209 Oil oozing at relay pipe Repair flared portion of...
Page 201: Over Voltage Protection / Low Voltage Protection
Troubleshooting SiBE04-624 2.34 Over Voltage Protection / Low Voltage Protection Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of Detect an abnormal increase or drop of voltage by the detection circuit or DC voltage detection circuit. Malfunction Detection Malfunction...
Page 202: Outdoor Unit Pcb Fault Or Communication Circuit Fault
SiBE04-624 Troubleshooting 2.35 Outdoor Unit PCB Fault or Communication Circuit Fault Remote Controller Display Outdoor Unit LED Display Method of 1. Detect within the programme of the microcomputer that the programme is in good running order. Malfunction 2. When indoor-outdoor unit signal transmission can not be performed for more than 15 sec. Detection 3.
Page 203 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check indoor unit also, because a comunication circuit fault may be caused by the problem related to the indoor unit. Check supply voltage Rated voltage? Rectify the power supply.
Page 204 SiBE04-624 Troubleshooting Continued from the previous page Check No.8 Refer to P.204 Does LED A turn off? Check grounding Grounded? Carry out grounding work. The cause seems to be an Check No.8 external factor other than failure of the outdoor unit Power supply waveform check PCB.
Page 205: Signal Transmission Error On Outdoor Unit Pcb
Troubleshooting SiBE04-624 2.36 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display Outdoor Unit LED 55 ( - ) Display Method of Communication error between microcomputer mounted on the main body and inverter. Malfunction Detection Malfunction When the data sent from the microcomputer of the inverter can not be received 15 times successively or for 15 sec, the machine shuts down.
Page 206 SiBE04-624 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check flashing interval of LED 5 YES (0.5 sec. interval) Is it 0.5 sec.? (same as LED A) (0.2 sec.
Page 207: Fan Motor System Fault / Fan Lock
Troubleshooting SiBE04-624 2.37 Fan Motor System Fault / Fan Lock Remote Controller Display Outdoor Unit LED Display Method of During humidification fan motor running, fan motor system fault is identified based on the fan speed (rpm) detected by Hall IC. Malfunction Detection Malfunction...
Page 208: Heater Wire Fault
SiBE04-624 Troubleshooting 2.38 Heater Wire Fault Remote Controller Display Outdoor Unit LED Display Method of A fault is identified when the outlet temperature of humidification fan does not reach a certain temperature within a given time after the heater turned on. Malfunction Detection Malfunction...
Page 209 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.2 Is the supply voltage Modify supply voltage. Refer to P.202 appropriate? Power supply OFF Is heater well cooled? Cool it down.
Page 210: Humidification Fan Outlet Thermistor Fault / Abnormal Heater Temperature
SiBE04-624 Troubleshooting 2.39 Humidification Fan Outlet Thermistor Fault / Abnormal Heater Temperature Remote Controller Display Outdoor Unit LED Display Method of Detect short circuit and wire breakage of humidification thermistor. When humidification fan outlet temperature becomes high, this condition is identified as an Malfunction abnormal heater temperature fault.
Page 211 Troubleshooting SiBE04-624 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.2 Check connector for proper Refer to P.202 connection Check No.5 Is it OK? Reconnect properly. Refer to P.203 Check No.2 *The humidification Thermistor resistance check...
Page 212: Lights-Out Of Microcomputer Status Lamp
SiBE04-624 Troubleshooting 2.40 Lights-out of Microcomputer Status Lamp Remote — Controller Display Outdoor Unit LED 51 ( - ) Display Method of When a microcomputer fault is detected, LED A or LED 5 turns off. Malfunction Detection Malfunction Decision Conditions Supposed Outdoor unit PCB is not power supplied Power supply failure due to noise...
Page 213: Check
Check SiBE04-624 3. Check Thermistor Resistance Check Check No.2 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 214: Installation Condition Check
SiBE04-624 Check Installation Condition Check Check No.3 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 215: Power Supply Waveform Check
Check SiBE04-624 Power Supply Waveform Check Check No.8 Check the voltage waveform between power supply terminals on the terminal board for disturbance using oscillo-tester. 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] Capacitor Voltage Check...
Page 216: Main Circuit Electrolytic Capacitor Check
SiBE04-624 Check Main Circuit Electrolytic Capacitor Check Check No.11 Do not touch the live parts within 10 min. after the breaker is turned off. Even after that, when you touch the parts, check that there is no DC voltage with a tester. Check the conductivity with a tester.
Page 217: Inverter Checker" Check
Check SiBE04-624 “Inverter Checker” Check Check No.14 1. Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge it results from the compressor failure or other failure (control PC board, power transistor, etc.).
Page 218: Power Transistor Check
SiBE04-624 Check Caution When the output frequency is low, the LED flashes slowly. As the frequency increases, the LED flashes quickly. (It looks like the LED is lit) If the operation is carried out with no load (the condition of the compressor is disconnected), some of units may stop operation with “CT system error”...
Page 219: Discharge Pressure Check
Check SiBE04-624 3.10 Discharge Pressure Check Check No.16 Discharge pressure check Is it high? Replace the compressor. Is the stop valve open? Set the stop valve open. Is the connecting Replace the field piping. piping deformed? Is the heat exchange filter dirty? Clean it.
Page 220: Electronic Expansion Valve Check
SiBE04-624 Check 3.11 Electronic Expansion Valve Check Check No.17 Check the electronic expansion valve (EV) as follows: 1. Check if the EV connector properly inserted into the control PCB. Collate the number of EV main body with that of the connector. 2.
Page 221: Indoor Unit Pcb Output Check
Check SiBE04-624 3.12 Indoor Unit PCB Output Check Check No.18 <Control PCB (A1P)> 1. Check for proper connection. 2. Check that the supply voltage applied to the motor is output between No.4 pin and No.7 pin). 3. Check that the motor control voltage is output (between No.3 pin and No.4 pin). Check that the rpm command voltage is output (between No.2 pin and No.4 pin).
Page 222: Rotating Pulse Input On Outdoor Unit Pcb Check
SiBE04-624 Check 3.13 Rotating Pulse Input on Outdoor Unit PCB Check Check No.23 < For propeller fan motor or humidification fan> Make sure voltage of 270 ± 30 V is applied. 1. Set power ON and operation OFF. Remove connector S70 or S72. 2.
Page 223: Humidity Sensor Check
Check SiBE04-624 3.14 Humidity Sensor Check Check No.27 1. Check for proper connection. 2. Check sensor input level (*1). 3. Change ambient conditions (*2) and check that input level changes accordingly. *1 Input level varies depending on the sensor. *2 Changes in humidity, temperature, air flow rate. To do this, merely breathe upon. <Humidity sensor>...
Page 224: Four-Way Valve Performance Check
SiBE04-624 Check 3.16 Four-way Valve Performance Check Check No.31 < Caution on resetting the power supply > ∗ Be sure to wait for 30 sec. or more after turning off the power supply. Turn off the power and turn it on again.
Page 225: Solenoid Valve For Dehumidification Check
Check SiBE04-624 3.17 Solenoid Valve for Dehumidification Check Check No.32 Faulty criterion: In dehumidification test operation mode, PCB is identified as a faulty when the solenoid valve does not turn on within 2 sec. after compressor start-up. (When reheating dehumidifying is not used, the operation mode is similar to cooling operation.) Stop operation Run dehumidification test...
Page 226: Part 7 Removal Procedure
SiBE04-624 Part 7 Removal Procedure 1. Indoor Unit...................216 1.1 Removal of the Air Filters / Front panel..........216 1.2 Removal of the Upper Panel ..............222 1.3 Removal of the Front Grille ..............225 1.4 Removal of the Assembly of the Open/Close Mechanism ....228 1.5 Removal of the Assembly of the Reduction Motor .......230 1.6 Removal of the Electrical Box ..............233 1.7 Removal of the PCB................238...
Page 227: Indoor Unit
Indoor Unit SiBE04-624 1. Indoor Unit Removal of the Air Filters / Front panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. External appearance Multi monitor lamp changes its color according to the operation mode.
Page 228 SiBE04-624 Indoor Unit Step Procedure Points Keep the front panel open with the support plate. Push the center part of the air filter up to undo the 2 hooks. Remove the air filter toward yourself. The shapes of the right and left filters are different.
Page 229 Indoor Unit SiBE04-624 Step Procedure Points 3. Remove the deodorizing filter for streamer Pull the center knob to undo the hook. Pull out the deodorizing filter for streamer toward yourself. Undo the 3 hooks on In cleaning, keep the filter the longitudinal with the frame for direction.
Page 230 SiBE04-624 Indoor Unit Step Procedure Points 4. Remove the streamer unit Pull down the streamer unit with holding the knob. 5. Remove the titanium apatite photocatalytic air purifying filter Undo the projection of the frame of titanium apatite photocatalytic air purifying filter and remove it.
Page 231 Indoor Unit SiBE04-624 Step Procedure Points 6. Remove the air supply Insert the filters along with filter the guide for easy installation. Lift the air supply filter up to take out. Install the air supply filter correctly so that the “Front” mark comes front.
Page 232 SiBE04-624 Indoor Unit Step Procedure Points Push the panel stoppers outward on both right and left sides to detach the rotary shafts from the holes. Slide the rotary shaft on the left to the right and pull it out toward yourself.
Page 233: Removal Of The Upper Panel
Indoor Unit SiBE04-624 Removal of the Upper Panel 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 service cover Loosen the 1 screw (black) of the service cover.
Page 234 SiBE04-624 Indoor Unit Step Procedure Points 2. Remove the upper panel Undo the 3 hooks of the upper panel. In part A, pinch the upper hook, undo the hook, and lift it up. In part B, undo the hook as in part A, and lift it up.
Page 235 Indoor Unit SiBE04-624 Step Procedure Points In part C, lift the right and left sides to bend the upper panel and slightly pull toward yourself to remove. Pull the upper panel When assembling, make toward yourself to sure to catch the far side remove.
Page 236: Removal Of The Front Grille
SiBE04-624 Indoor Unit Removal of the 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. Remove the front grille Loosen the 3 screws and undo the upper 3 hooks of the front grille.
Page 237 Indoor Unit SiBE04-624 Step Procedure Points Slide the front grille toward yourself to remove. 2. How to install the front Points on installing grille When assembling, make sure that the horizontal When assembling the blade (large) does not come front grille, fit the 4 inside.
Page 238 SiBE04-624 Indoor Unit Step Procedure Points Check that the arm in The gear case is fixed to the the gear case of the front grille. front grille is in the When assembling the front stored position. grille, make sure the arm is stored.
Page 239: Removal Of The Assembly Of The Open/Close Mechanism
Indoor Unit SiBE04-624 Removal of the Assembly of the Open/Close Mechanism 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 open/close Preparation mechanism (right) Remove the front grille according to "Removal of Loosen the 1 screw of...
Page 240 SiBE04-624 Indoor Unit Step Procedure Points 2. Remove the open/close mechanism (left) Pull out the shaft from the open/close mechanism (left). Loosen the 2 screws of Service part is obtained as the open/close an assembly kit. mechanism (left). Remove the open/ close mechanism (left).
Page 241: Removal Of The Assembly Of The Reduction Motor
Indoor Unit SiBE04-624 Removal of the Assembly of the Reduction Motor 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 assembly of the reduction motor Disconnect the connector for reduction motor [S51].
Page 242 SiBE04-624 Indoor Unit Step Procedure Points Cut the clamp. Slide the cover to the right to undo the hook. Lift the cover of the gear case of the reduction motor up slightly to undo the upper hook, and remove it. Removal Procedure...
Page 243 Indoor Unit SiBE04-624 Step Procedure Points Pull the gear out to remove. Loosen the 1 screw of the reduction motor. Turn the assembly over and detach the sealing tape of the reduction motor. Undo the 2 hooks of The connector of the the limit switch.
Page 244: Removal Of The Electrical Box
SiBE04-624 Indoor Unit Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the wire harnesses around the electrical box Open the cover of the electrical box.
Page 245 Indoor Unit SiBE04-624 Step Procedure Points The figure shows the arrangement of wiring of wire harnesses (under) and names of parts. Disconnect the connector for dehumidifying solenoid valve [S43]. Disconnect the connector for streamer unit [S52]. Removal Procedure...
Page 246 SiBE04-624 Indoor Unit Step Procedure Points Disconnect the The connector [S41] is for connector for swing both horizontal blades and motor [S41]. vertical blades. Disconnect the connector for fan motor [S1], and undo the 1 hook. Removal Procedure...
Page 247 Indoor Unit SiBE04-624 Step Procedure Points Loosen the 1 screw of the drip proof cover. Loosen the each screw of the 2 earth wires. Disconnect the heat Be careful not to lose the exchanger thermistor. clip for thermistor. Positions of the thermistors are different according to the models.
Page 248 SiBE04-624 Indoor Unit Step Procedure Points Close the cover and slide to undo the hook in the key hole. Push up the bottom side of the electrical box, or push the bottom frame to the back. Undo the upper hook first.
Page 249: Removal Of The Pcb
Indoor Unit SiBE04-624 Removal of the 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 shelter Preparation Remove the electrical box External appearance of according to "Removal of the electrical box.
Page 250 SiBE04-624 Indoor Unit Step Procedure Points 2. Remove the power supply terminal board Loosen the 1 screw and pull out the terminal board sideward. Disconnect the red Black..(1) Power supply terminal with pliers and White ..(2) Power supply black and white Red ..
Page 251 Indoor Unit SiBE04-624 Step Procedure Points Disconnect the [S46]: to the display PCB [S56] connectors [S46] and [S48]: to the sensor PCB [CN1] [S48]. Push out the connector for reduction motor mechanism while pinching the connector from the back side of the electrical box cover.
Page 252 SiBE04-624 Indoor Unit Step Procedure Points Names of parts of the control PCB. [S1]: Fan motor [S43]: Solenoid valve [S21]: HA [S46]: to Display PCB [S32]: Heat exchanger [S48]: to Sensor PCB thermistor [S51]: Open/close [S41]: Swing motor mechanism [S52]: Streamer unit 4.
Page 253 Indoor Unit SiBE04-624 Step Procedure Points Undo the upper hook. Using a flat screwdriver makes it easy to undo the hook. Undo the lower hook. Removal Procedure...
Page 254 SiBE04-624 Indoor Unit Step Procedure Points Undo the 3 hooks of The receiver PCB and the the receiver PCB. display PCB are united. Removal Procedure...
Page 255: Removal Of The Dehumidifying Solenoid Valve Coil
Indoor Unit SiBE04-624 Removal of the Dehumidifying Solenoid Valve Coil Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Detach the lead wire Preparation from the drip proof Remove the front grille cover.
Page 256: Removal Of The Connecting Duct
SiBE04-624 Indoor Unit Removal of the Connecting Duct 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 connecting Preparation duct for humidifying hose Remove the front grille according to "Removal of Detach the humidifying the Front Grille".
Page 257 Indoor Unit SiBE04-624 Step Procedure Points Slide the duct unit upward to remove. When assembling, make sure to insert into the fixing hole. Removal Procedure...
Page 258: Removal Of The Drain Hose
SiBE04-624 Indoor Unit 1.10 Removal of the Drain Hose 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 drain hose Cover the drain hose with plastic bags or the like so as Loosen the screws of the remaining drain will not...
Page 259 Indoor Unit SiBE04-624 Step Procedure Points Insert the drain hose Make sure to check the removed in the drain hose is inserted firmly. previous step. Insert the detached drain plug with an Allen Caution wrench (4mm). Do not push the drain plug with a sharp device like a screwdriver.
Page 260: Removal Of The Swing Motor
SiBE04-624 Indoor Unit 1.11 Removal of the Swing Motor 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 swing motor Preparation Remove the electrical box There are 3 hooks for according to "Removal of the lead wire for swing...
Page 261 Indoor Unit SiBE04-624 Step Procedure Points Undo the upper hook of the cover with a flat screwdriver. The hook on the back of the assembly of swing motor. Undo the hook of connecting shaft for vertical blades. Remove the assembly of swing motor.
Page 262: Removal Of The Heat Exchanger
SiBE04-624 Indoor Unit 1.12 Removal of the Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the refrigerant Preparation piping Remove the drain hose according to "Removal of Put a wooden block Drain Hose".
Page 263 Indoor Unit SiBE04-624 Step Procedure Points 2. Remove the indoor unit When the pipes are disconnected, protect the Remove the indoor unit both openings of pipe side from the installation and unit side from entering plate. of moisture. 3. Remove the heat Undo the 2 hooks on the exchanger side with a flat screwdriver.
Page 264 SiBE04-624 Indoor Unit Step Procedure Points Loosen the 2 fixing screws for heat exchanger on the left. Lift the left side of the heat exchanger, and Caution pull towards yourself. When dismounting or mounting the heat exchanger, be sure to wear gloves or wrap it with cloth before proceeding to the work.
Page 265: Removal Of The Propeller Fan / Fan Motor
Indoor Unit SiBE04-624 1.13 Removal of the 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 1. Remove the right side Preparation panel Remove the heat exchanger according to "Removal of...
Page 266 SiBE04-624 Indoor Unit Step Procedure Points Remove the fan motor The fan motor fixture (lower) and fan rotor. can be removed by pushing the hook. 3. Remove the fan motor Loosen the fixing screw for fan rotor and fan motor. Remove the fan motor and fan rotor.
Page 267 Indoor Unit SiBE04-624 Step Procedure Points The bearing is made of rubber. Push it inward firmly and remove it. 5. How to install the fan motor When assembling, align the mark on the shaft. Removal Procedure...
Page 268: Removal Of Horizontal Blades / Vertical Blades
SiBE04-624 Indoor Unit 1.14 Removal of Horizontal Blades / Vertical Blades 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 horizontal blade Open the horizontal blade (large).
Page 269 Indoor Unit SiBE04-624 Step Procedure Points 2. Remove the interlocking shaft Undo the hook of the interlocking shaft. Remove the interlocking shaft. 3. Remove the vertical blades Undo the 3 hooks of the vertical blades with a flat screwdriver. Remove the vertical blades.
Page 270: Removal Of The Streamer Unit
SiBE04-624 Indoor Unit 1.15 Removal of the Streamer Unit 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 streamer unit Names of parts of the streamer unit.
Page 271 Indoor Unit SiBE04-624 Step Procedure Points Cut the clamp and loosen the 1 screw of the drip proof cover. 2. Remove the cover of streamer unit Loosen the 2 screws of the cover. View from the back side (7 hooks) Turn it back and undo the 7 hooks.
Page 272 SiBE04-624 Indoor Unit Step Procedure Points 3. Remove the deodorizing See page 218 for removal of filter and electrode unit the deodorizing filter. Remove the deodorizing filter and electrode unit. Slide the cover of the When assembling, slide to electrode unit to the left the right.
Page 273 Indoor Unit SiBE04-624 Step Procedure Points 4. Remove the streamer unit Loosen the 1 screw of the electrode plate with a precise screwdriver. Undo the 2 hooks of the streamer unit PCB. 5. Disconnect the limit switch Disconnect the limit switch.
Page 274: Outdoor Unit
SiBE04-624 Outdoor Unit 2. Outdoor Unit Removal of the Humidify Unit Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. External appearance 2. Remove the stop valve There is no drain unit.
Page 275 Outdoor Unit SiBE04-624 Step Procedure Points 3. Remove the top panel Loosen the 4 screws. 4. Remove the humidify unit Be sure to wait 10 minutes or more after turning off the The figure shows the power supply before arrangement of the disconnecting the relay harness.
Page 276 SiBE04-624 Outdoor Unit Step Procedure Points Disconnect the Be sure to wait 10 minutes connector for the or more after turning off the humidify fan motor. power supply before disconnecting the connectors. Pull out the connector while pushing up the hook on the bottom side.
Page 277: Removal Of The Heater Assembly / Humidifying Rotor (Moisture Absorption Element) / Humidifying Rotor Motor
Outdoor Unit SiBE04-624 Removal of the Heater Assembly / Humidifying Rotor (Moisture Absorption Element) / Humidifying Rotor 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 278 SiBE04-624 Outdoor Unit Step Procedure Points Loosen the 2 screws to remove the heater assembly. Undo the 1 hook. Inside of the heater Heater and thermal fuse assembly. should be replaced as the heater assembly. Loosen the 4 screws of The thermal protector is the thermal protector.
Page 279 Outdoor Unit SiBE04-624 Step Procedure Points Inside structure of the heater assembly. 3. Remove the humidifying rotor. Detach the lead wire for fan motor from the groove. Remove the bell mouth on absorption side. Removal Procedure...
Page 280 SiBE04-624 Outdoor Unit Step Procedure Points Lift the humidifying A heat catalyst (black) is rotor up to remove. applied on the upper side. 4. Remove the humidifying rotor motor The figure shows the connector for rotor motor. Loosen the 2 screws of the rotor motor.
Page 281: Removal Of The Humidifying Assembly
Outdoor Unit SiBE04-624 Removal of the Humidifying Assembly 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 humidifying Preparation fan assembly Remove the humidify unit according to "Removal of Detach the 2 seal Humidify Unit".
Page 282 SiBE04-624 Outdoor Unit Step Procedure Points Remove the The humidifying assembly humidifying assembly. should be replaced as an assembly set. (Disassembling of the assembly can cause a noise.) Detach the seal material to release the humidifying thermistor. Inside structure of the upper part of the humidifying assembly.
Page 283 Outdoor Unit SiBE04-624 Step Procedure Points Lift the air supply and exhaust changeover damper to remove. Loosen the 1 screw of the driving motor for damper. Removal Procedure...
Page 284: Removal Of The Moisture Absorption Fan Motor
SiBE04-624 Outdoor Unit Removal of the Moisture Absorption 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. Remove the moisture Preparation absorption fan Remove the humidifying rotor according to "Removal Disconnect the of Humidifying Rotor".
Page 285: Removal Of The Propeller Fan / Fan Motor
Outdoor Unit SiBE04-624 Removal of the 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 1. Remove the shelter Preparation Remove the humidify unit Loosen the 1 screw of according to "Removal of the shelter.
Page 286 SiBE04-624 Outdoor Unit Step Procedure Points Lift the electrical box (cover) and remove. 3. Remove the drip proof Service monitor (LED A). cover Check the LED from the slit. Lift the drip proof cover and remove. 4. Remove the front panel Loosen the 9 screws of the front panel.
Page 287 Outdoor Unit SiBE04-624 Step Procedure Points Loosen the 4 screws to remove the front grille. 5. Remove the propeller fan When assembling, align the mark of the propeller fan Loosen the fan fixing and D cut of the motor shaft. nut and remove the propeller fan.
Page 288 SiBE04-624 Outdoor Unit Step Procedure Points 6. Remove the fan motor Disconnect the fan motor connector [S70] from PCB. Detach the lead wire for fan motor and pass the lead wire downward through the opening. Loosen the 1 screw of the fan motor fixing plate.
Page 289 Outdoor Unit SiBE04-624 Step Procedure Points Detach the upper part Heat exchanger fin of the fan motor fixing plate. Fan motor fixing plate has the 2 hooks on lower part. Undo the fixing hook for lead wire and detach the lead wire. Loosen the 4 screws of the fan motor.
Page 290: Removal Of The Duct In Humidifier
SiBE04-624 Outdoor Unit Removal of the Duct in Humidifier 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 duct in humidifier Loosen the 1 screw and remove the stop valve cover.
Page 291: Removal Of The Electrical Box
Outdoor Unit SiBE04-624 Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the wire Preparation harnesses of the PCB Remove the front panel according to "Removal of Detach the harnesses Propeller Fan / Fan Motor".
Page 292 SiBE04-624 Outdoor Unit Step Procedure Points Disconnect the connector for expansion valve coil [S20]. Disconnect the Thermistor assembly is in a connector for set of 3 thermistors. thermistor assembly (Outdoor air, heat [S90]. exchanger, and discharge pipe thermistors) Disconnect the connector for humidifying thermistor [S91].
Page 293 Outdoor Unit SiBE04-624 Step Procedure Points Disconnect the relay harness for compressor. 2. Disconnect the power Thermal fuse should be supply / connecting wiring replaced with the terminal board. Loosen the 1 screw of connecting wire You can work without terminal board.
Page 294 SiBE04-624 Outdoor Unit Step Procedure Points Disconnect the Black-power supply connectors black White-power supply (power supply), white Red-signal (power supply), and Green/Yellow-earth red (signal) and detach the earth wire. Undo the clip for the The clip is push-mount type. thermistor assembly fixed to the electrical box.
Page 295: Removal Of The Pcb
Outdoor Unit SiBE04-624 Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the 7 screws Preparation for the PCB or the Remove the electrical box radiation fin.
Page 296 SiBE04-624 Outdoor Unit Step Procedure Points Loosen the 2 screws and 1 clip to remove the heat interception plate. Cut the fixing clamps for the wire harnesses. Loosen the 2 fixing screws of the PCB. Raise the PCB toward yourself and undo the 3 hooks of the electrical box.
Page 297 Outdoor Unit SiBE04-624 Step Procedure Points Remove the PCB from the electrical box. Disconnect the each wire harness. S20 : Expansion valve S21 : Humidifying rotor motor S22 : Damper motor S501: LS S70 : Fan motor S72 : Humidifying fan motor S80 : Four way valve S90 : Thermistor (outdoor air / heat exchanger /...
Page 298: Removal Of The Sound Blanket
SiBE04-624 Outdoor Unit Removal of the Sound Blanket 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 Preparation panel Remove the electrical box according to "Removal of Loosen the 3 screws Electrical Box".
Page 299 Outdoor Unit SiBE04-624 Step Procedure Points Undo the fixing strings of the sound blanket (outer body). Open the sound Since the piping ports on blanket (outer body) the sound blanket are torn and pull it out. easily, remove the blanket carefully.
Page 300: Remove The Thermistor Assembly
SiBE04-624 Outdoor Unit 2.10 Remove the Thermistor Assembly Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The figure shows the Preparation arrangement of the Remove the thermistor thermistors.
Page 301 Outdoor Unit SiBE04-624 Step Procedure Points Detach the heat exchanger thermistor. Be careful not to loose the clip for the thermistor. Lift the sound blanket Since the piping ports on (top) to remove. the sound blanket are torn easily, remove the blanket carefully.
Page 302: Removal Of The Reactor / Partition Plate
SiBE04-624 Outdoor Unit 2.11 Removal of the Reactor / Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reactor Preparation Remove the sound blanket Loosen the 1 screw according to "Removal of and lift the reactor to...
Page 303: Removal Of The Four Way Valve
Outdoor Unit SiBE04-624 2.12 Removal of the 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 peripheral Preparation parts Remove the sound blanket according to "Removal of Loosen the 1 screw of Sound Blanket".
Page 304 SiBE04-624 Outdoor Unit Step Procedure Points Provide a protective sheet Cautions for restoration or a steel plate so that the 1. Restore the piping by non- brazing flame cannot oxidation brazing. influence peripheries. In case of you cannot use the nitrogen gas, restore as Before working, make sure quickly as possible.
Page 305: Removal Of The Expansion Valve
Outdoor Unit SiBE04-624 2.13 Removal of the Expansion 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 peripheral Preparation parts Remove the sound blanket •...
Page 306: Removal Of The Compressor
SiBE04-624 Outdoor Unit 2.14 Removal of the 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 peripheral Preparation parts Remove the sound blanket according to "Removal of Remove the terminal Sound Blanket".
Page 307 Outdoor Unit SiBE04-624 Step Procedure Points Provide a protective sheet Warning or a steel plate so that the Ventilate when refrigerant brazing flame cannot leaks during the work. influence peripheries. (If refrigerant contacts fire, it will cause to arise toxic gas.) Before working, make sure that the refrigerant is Caution...
Page 308: Part 8 Others
SiBE04-624 Part 8 Others 1. Others ....................298 1.1 Test Run from the Remote Controller ..........298 1.2 Field Setting ..................299 Others...
Page 309: Others
Others SiBE04-624 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 310: Field Setting
SiBE04-624 Others Field Setting 1.2.1 Humidifying Hose Length Setting the humidifying hose length. Set the humidifying hose length to ensure humidifying capacity. Use the remote controller to set the humidifying hose length. When doing this, power on the unit as communication is established between the unit and the remote controller.
Page 311 Others SiBE04-624 1.2.2 How to set the different addresses When 2 indoor units are installed in one room, the 2 wireless remote controllers can be set for different addresses. 1) Remove the front grille. (3 screws) 2) Cut the address jumper “JA”. Fig.
Page 312: Part 9 Appendix
SiBE04-624 Part 9 Appendix 1. Piping Diagrams..................302 1.1 Indoor Units ..................302 1.2 Outdoor Units ..................302 2. Wiring Diagrams..................303 2.1 Indoor Units ..................303 2.2 Outdoor Units ..................303 Appendix...
Page 313: Piping Diagrams
Piping Diagrams SiBE04-624 1. Piping Diagrams Indoor Units FTXR28/42/50EV1B INDOOR UNIT HEAT EXCHANGER THERMISTOR ON HEAT EXCH. SOLENOID VALVE AT RATED VOLTAGE:CLOSED (UNDER DEHUMIDIFICATION OPERATION) CROSS FLOW FAN HEAT EXCHANGER FAN MOTOR FIELD PIPING (6.4CuT) SINGLE UNION JOINT FIELD PIPING 9.5CuT (9.5CuT) SINGLE UNION JOINT...
Page 314: Wiring Diagrams
SiBE04-624 Wiring Diagrams 2. Wiring Diagrams Indoor Units FTXR28/42/50EV1B A1P~A5P : PRINTED CIRCUIT BOARD : FLAME GROUND : FUSE : MULTI MONITOR CAUTION H2P, H3P : PILOT LAMP outdoor NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF : LIMIT SWITCH FOR PANEL THE MAIN POWER SUPPLY IS : LIMIT SWITCH FOR STREAMER TURNED OFF AND THEN BACK...
Page 315 Wiring Diagrams SiBE04-624 Removal Procedure...
Page 316 Specifications, designs and other content appearing in this brochure are current as of August 2006 but subject to change without notice. SiBE 04-624 Printed in Japan 08/2006 B AK...

This manual is also suitable for:

Ftxr28ev1b Rxr50ev1b Rxr28ev1b Ftxr42ev1b Rxr42ev1b Ftxr50ev1b

Daikin E Series 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

Quick Links

Troubleshooting

Related Manuals for Daikin E Series

Summary of Contents for Daikin E Series