Daikin ARKH20CAVMB User Manual Download

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Service

Manual

Inverter Pair

Wall Mounted Type C-Series

D-Series

[Applied Models]

Inverter Pair : Cooling Only

Inverter Pair : Heat Pump

SiENBE04-401A

Summary of Contents for ARKH20CAVMB

Page 1: ...Service Manual Inverter Pair Wall Mounted Type C Series D Series Applied Models zInverter Pair Cooling Only zInverter Pair Heat Pump SiENBE04 401A ...

Page 2: ... RN20CVMB9 RKS20C2VMB RKH20CAVMB ARKH20CAVMB RN25CVMB9 RKS25C2VMB RKH25CAVMB ARKH25CAVMB RN35CVMB9 RKS35C2VMB RKH35CAVMB ARKH35CAVMB zHeat Pump Indoor Unit FTXS20CVMB 9 ATXS20CVMB 9 FTYN20CVMB9 FTXS25CVMB 9 8 ATXS25CVMB 9 FTYN25CVMB9 FTXS35CVMB 9 8 ATXS35CVMB 9 FTYN35CVMB9 FTXS20CAVMB ATXS20DAVMB FTXS25CAVMB ATXS25DAVMB FTXS35CAVMB ATXS35DAVMB Outdoor Unit RXS20CVMB 9 ARXS20CVMB RXH20CVMB9 ARXH20C...

Page 3: ... Flaps Wide Angle Louvres and Auto Swing 46 1 3 Fan Speed Control for Indoor Units 47 1 4 Programme Dry Function 48 1 5 Automatic Operation 49 1 6 NIGHT SET Mode 50 1 7 INTELLIGENT EYE 51 1 8 HOME LEAVE Operation 53 1 9 Inverter POWERFUL Operation 54 1 10 Other Functions 55 2 Function of Main Structural Parts 56 2 1 Function of Thermistor 56 3 Control Specification 58 3 1 Mode Hierarchy 58 3 2 Fre...

Page 4: ...r Codes and Description 109 4 2 Indoor Unit PCB Abnormality 110 4 3 Freeze up Protection Control or High Pressure Control 111 4 4 Fan Motor AC Motor or Related Abnormality 113 4 5 Thermistor or Related Abnormality Indoor Unit 114 4 6 Signal Transmission Error between Indoor and Outdoor Unit 115 4 7 OL Activation Compressor Overload 116 4 8 Compressor Lock 117 4 9 DC Fan Lock 118 4 10 Input Over Cu...

Page 5: ...181 2 5 Removal of Four Way Valve 183 2 6 Removal of Compressor 185 2 7 Removal of PCB 187 3 Outdoor Unit RK X H C ARK X H C R Y N C 190 3 1 Removal of External Panels 190 3 2 Removal of Bell mouth 193 3 3 Removal of PCB and Electrical Box 194 3 4 Removal of Propeller Fan and Fan Motor 201 3 5 Removal of Partition Plate and Reactor 204 3 6 Removal of Sound Insulation Pad 207 3 7 Removal of Electro...

Page 6: ...e plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharg...

Page 7: ... the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient stren...

Page 8: ...annot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When replacing the coin battery in the remote control be sure to disposed of the old batt...

Page 9: ...ding and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MΩ or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet ...

Page 10: ...SiENBE04 401A List of Functions 1 Part 1 List of Functions 1 List of Functions 2 1 1 High Grade Models 2 1 2 Standard Grade Models 5 1 3 Non lnverter Models 9 ...

Page 11: ...Reliability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H2 H2 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Ma...

Page 12: ... Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H2 H2 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manual Flexible Voltage Corre...

Page 13: ...estart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H2 H2 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manual Flexible Voltage Corresp...

Page 14: ...liability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manu...

Page 15: ...ility Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manual H2 H2 Flexib...

Page 16: ...lity Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manual H2 H2 Flexibl...

Page 17: ...iability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexibility Multi Split Split Type Compatible Indoor Unit Night Quiet Mode Automatic Outdoor Unit Silent Operation Manua...

Page 18: ...lure Vertical Auto Swing Up and Down Self Diagnosis Digital LED Display H H Horizontal Auto Swing Right and Left Wiring Error Check 3 D Airflow Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Airflow Mode 3 Step Airflow H P Only Flexibility Multi Split Split Type Compatible Indoor Unit Comfort Control Auto Fan Speed Indoor Unit Silent Operation Flexible Voltage Correspondence Night Quiet...

Page 19: ...List of Functions SiENBE04 401A 10 List of Functions ...

Page 20: ...SiENBE04 401A Specifications 11 Part 2 Specifications 1 Specifications 12 1 1 Cooling Only 12 1 2 Heat Pump 20 ...

Page 21: ...ght Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 273 784 195 Packaged Dimensions ...

Page 22: ...Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 185 273 784 185 273 784 185 Packaged Dimensions H W D mm 258 834 325 258 834 325 ...

Page 23: ...ilter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 273 784 195 Packaged Dimensions H W D mm 258 834 325 258 834 325 2...

Page 24: ...d Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 273 784 195 Packaged Dimensi...

Page 25: ...ontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 185 273 784 185 273 784 185 Packaged Dimensions H W D mm 258 8...

Page 26: ...ontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 273 784 195 Packaged Dimensions H W D mm 258 8...

Page 27: ...zontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 273 784 195 Packaged Dimensions H W D mm 258 ...

Page 28: ...hable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 185 273 784 185 273 784 185 Packaged Dimensions H W D mm 258 834 325 258 834 325 258 834 325 Weight kg 7 5 7 5 7 5 Gross Weight kg 11...

Page 29: ...ontrol Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dimensions H W D mm 258 ...

Page 30: ...ction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 195 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power H dBA 57 5...

Page 31: ...izontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 185 273 784 185 Packaged Dimensions H W D mm 258 834 325 258 834 325 W...

Page 32: ...n Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 185 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power H dBA 57 57 Ou...

Page 33: ...zontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dimensions H W D mm 258 834 325 258 834 325 We...

Page 34: ...on Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 195 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power H dBA 57 57 O...

Page 35: ... Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dim...

Page 36: ...to Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 195 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power...

Page 37: ...ion Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 185 273 784 185 Packaged Dimensions H W D mm...

Page 38: ... Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 185 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power H...

Page 39: ...ion Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dimensions H W D mm...

Page 40: ...to Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 195 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power...

Page 41: ...ion Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 195 273 784 195 Packaged Dimensions H W D mm...

Page 42: ... Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 195 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 23 39 34 29 26 Sound Power H...

Page 43: ...vable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 273 784 185 273 784 185 Packaged Dimensions H W D mm 258 834 325 258 834 325 Weight kg 7 5 7 5 Gross Weight kg 11 11 Operation Sound H M L SL...

Page 44: ...rd Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784 185 Packaged Dimensions H W D mm 258 834 325 Weight kg 7 5 Gross Weight kg 11 Operation Sound H M L SL dBA 39 33 26 39 34 29 Sound Power H dBA 57 57 Outdoor Units RYN35CVMB9 Casing Color Ivory Wh...

Page 45: ...Specifications SiENBE04 401A 36 Specifications ...

Page 46: ...Connector Wiring Diagram 37 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 38 1 1 Indoor Unit 38 1 2 Outdoor Unit RK X S C ARK X S C 40 1 3 Outdoor Unit RK X H C ARK X H C R Y N C 42 ...

Page 47: ...ralized control HA 5 S26 Connector for signal receiver PCB 6 S27 S36 Connector for control PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for INTELLIGENT EYE sensor PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery function auto restart Refer to page 219 for detail 3 SW7 Forced operation ON OFF switc...

Page 48: ... Connector Wiring Diagram 39 PCB Detail PCB 1 Control PCB PCB 2 Signal Receiver PCB PCB 3 INTELLIGENT EYE sensor PCB Inverter models only Control PCB V1 Fu1 S1 SW7 LED1 LED2 LED3 RTH1 S27 S7 12V Check S6 GND S26 S32 JC JB JA LED A S35 S21 Signal Receiver PCB R4987 5V Check S36 R4988 ...

Page 49: ...0 Connector for electronic expansion valve coil 4 S30 Connector for compressor motor 5 S40 Connector for overload protector 6 S70 Connector for fan motor 7 S80 Connector for four way valve coil 8 S90 Connector for thermistors outdoor air heat exchanger discharge pipe 9 HC3 HC4 HL3 HN3 Connector for filter PCB 1 FU1 FU2 Fuse 3 15A 2 FU3 Fuse 20A 3 LED A Service monitor LED 4 V1 V2 V3 Varistor 5 J8 ...

Page 50: ...onnector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 41 PCB Detail PCB 1 Control PCB outdoor unit PCB 2 Filter PCB FU2 3 15A S30 HN3 HC3 S70 J8 HC4 R4989 S40 LED A S90 HL3 FU1 3 15A V1 S80 S20 S10 FU3 20A S11 R3323 V3 V2 ...

Page 51: ...C R Y N C Connectors Note Other designations PCB Detail Control PCB outdoor unit 1 S20 Connector for electronic expansion valve 2 S70 Connector for fan motor 3 S80 Connector for four way valve 4 S90 Connector for thermistors outdoor air heat exchanger discharge pipe 1 FU1 Fuse 3 15A 2 FU3 Fuse 20A 3 LED A Service monitor LED 4 V1 V2 V3 Varistor ...

Page 52: ...ctions 55 2 Function of Main Structural Parts 56 2 1 Function of Thermistor 56 3 Control Specification 58 3 1 Mode Hierarchy 58 3 2 Frequency Control 59 3 3 Controls at Mode Changing Start up 61 3 4 Discharge Pipe Control 62 3 5 Input Current Control 63 3 6 Freeze up Protection Control 63 3 7 Heating Peak cut Control 64 3 8 Fan Control 64 3 9 Liquid Compression Protection Function 2 64 3 10 Defros...

Page 53: ...ins the conversion principle Drawing of Inverter The following drawing shows a schematic view of the inverter principle Phase Description 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency When the frequency increases the rotation speed of the compressor increases res...

Page 54: ...to air condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following table shows the functions that define the minimum and maximum frequency Forced Cooling Operation For more information refer to Forced operation mode on page 70 ...

Page 55: ...presses the warm air above the floor to reach the entire room Cooling Mode During cooling mode the flap retracts into the indoor unit Then cool air can be blown far and pervaded all over the room Wide Angle Louvers The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution Auto Swing The following table explains the auto swing process...

Page 56: ...operation fan operate H tap 50 90 rpm 2 Fan stops during defrost operation Automatic Air Flow Control for Heating The following drawing explains the principle for fan speed control for heating Automatic Air Flow Control for Cooling The following drawing explains the principle of fan speed control for cooling Step Cooling Heating Dry mode LLL Heating thermostat OFF 25 35kW class 500 860 rpm During ...

Page 57: ...e set by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room temperature at startup Temperature ON point at which operation starts Frequency switching point Temperaturedifference for operation stop 24 C Room temperature at startup 0 5 C 1 5 C 18 C 18 C 1 0 ...

Page 58: ...tting temperature plus correction value correction value cooling 0 deg heating 2 deg 3 Operation ON OFF point and mode switching point are as follows 1 Heating Cooling switching point Room temperature Main unit setting temperature 2 5 deg 2 Cooling Heating switching point Room temperature Main unit setting temperature 2 5 deg 3 Thermostat ON OFF point is the same as the ON OFF point of cooling or ...

Page 59: ...ng for economical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity Cooling Operation Heating Operation Temperature setting 1 C Temperature setting 0 5 C Temperature setting Operation stops at the set hours Timer operation NightSetCircuitON 0 5 C temperature shift 0 5 C temperature shift Tem...

Page 60: ...When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature sifted 2 C from the set temperature COOL 2 C higher DRY 1 C higher AUTO according to the operation mode at that time H1 In case of FAN mode the fan speed reduces by 50 rpm R2821 If the sensor detects the outputs 10 times sec or more it judges humans exi...

Page 61: ...utes so as to prevent this phenomena After this 40 minutes the prohibition of the thermostat off is cancelled and it can realize the conditions to conduct thermostat off depending on the room temperature In or after this forty minutes if the sensor detects human motion detection signal it let the set temperature and the fan speed return to the original set point keeping a normal operation Others T...

Page 62: ...ion becomes effective The HOME LEAVE button is ineffective in dry mode and fan mode 2 Details of Function A mark representing HOME LEAVE is indicated on the liquid crystal display of the remote control The indoor unit is operated according to the set temperature and air volume for HOME LEAVE which were pre set in the memory of the remote control The LED Red of indoor unit representing HOME LEAVE l...

Page 63: ...period of twenty minutes Ex Powerful operation in cooling mode Operation mode Fan speed Target set temperature COOL H tap 90 rpm 18 C DRY Dry rotating speed 50 rpm Normally targeted temperature in dry operation Approx 2 C HEAT H tap 90 rpm 30 C FAN H tap 90 rpm AUTO Same as cooling heating in Powerful operation The target is kept unchanged R4984 Target temp Fan 90rpm Set temp 18 C Powerful ON Powe...

Page 64: ...ilter with Photocatalytic Deodorizing Function This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter in a single unit Combining the two filters in this way increases the active surface area of the new filter This larger surface area allows the filter to effectively trap microscopic particles decompose odours and deactivate bacteria and viruses even fo...

Page 65: ... the compressor rises abnormally the operating frequency drops or the operation must be halted 2 The discharge pipe thermistor is used for detecting the discharge thermistor disconnected C Indoor Heat Exchanger Thermistor DCN 1 The indoor heat exchanger thermistor is used for controlling target discharge pipe temperature Set a target discharge pipe temperature according to the outdoor and indoor h...

Page 66: ...o control the discharge pipe If the temperature of discharge pipe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the operation must be halted 2 The discharge pipe thermistor is used for detecting the discharge thermistor disconnected C Indoor Heat Exchanger Thermistor DCN 1 The indoor heat exchanger thermistor is used for controlling targ...

Page 67: ...and cooling including drying Note Unless specified otherwise an indoor dry operation command must be regarded as cooling operation Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling Heating Defrosting Stop mode except for cooling heating modes by indoor command Preheat operation During C capacitor is discharging Stop R2829 Air co...

Page 68: ...pper limits of the following functions Compressor protection input current discharge pipes peak cutting freeze up protection defrost 3 Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions Four way valve operating compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a...

Page 69: ...lume air flow rate and other factors PI Control Determine Frequency Up Down by ΔD Signal 1 P control Calculate ΔD value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 2 I control If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the ΔD value obtaining ...

Page 70: ...ay valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 160 sec after unit operation is stopped 3 3 3 Four Way Valve Operation Compensation Outline Heat Pump Only At the beginning of the operation as the four way valve is switched acquire the differential pressure required for activating the four way valve by having output the operating...

Page 71: ...is set to keep this temperature from going up further Detail Divide the Zone Management within the Zones FCG 3 FCG 2 FCG 1 TCG 1 TCG 2 TCG 3 88 64 48 240 360 180 Frequency FCG3 FCG2 FCG1 TCG1sec TCG2sec TCG3sec Time R2949 Zone Control contents Stop zone When the temperature reaches the stop zone stop the compressor and correct abnormality Drooping zone Start the timer and the frequency will be dro...

Page 72: ...ent drooping and stop value according to the outdoor air temperature 1 In case the operation mode is cooling The current droops when outdoor air temperature becomes higher than a certain level model by model 2 In case the operation mode is heating only for heat pump model The current droops when outdoor air temperature becomes higher than a certain level model by model 3 6 Freeze up Protection Con...

Page 73: ...ation 4 Tap control when drooping function is working 5 Fan control when forced operation 6 Fan control in low noise mode 7 Fan control during heating operation 8 Fan control in the quiet mode 9 Fan control in the powerful mode 10 Fan control for pressure difference upkeep Detail Fan OFF Control when Stopped Fan OFF delay for 60 seconds must be made when the compressor is stopped 3 9 Liquid Compre...

Page 74: ...6 minutes after the compressor is started and more than 44 minutes of accumulated time pass since the start of the operation or ending the defrosting Conditions for Canceling Defrost The judgment must be made with heat exchanger temperature 4 C 22 C A RK X S models A RK X H R Y N models ON OFF ON OFF ON OFF 0Hz 5sec 350pps 450pps 450pps PI contro 5sec 50sec 50sec 600sec 60sec R4014 Electronic expa...

Page 75: ...temperature control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control R2833 only for heat pump model x x x x x x x x x x x x x x x Fully closed when power is turned ON Open control when starting Control of target discharge pipe temperature Pressure equalizing control Open control when starting Control of target discharge pipe te...

Page 76: ... Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If any is disconnected open the electronic expansion valve according to the outdoor air temperature and the operating frequency and operate for a specified time and then stop After 3 minutes of waiting restart the unit...

Page 77: ...discharge pipe temperature from the indoor and outdoor heat exchanger temperature and adjust the electronic expansion valve opening so that the actual discharge pipe temperature become close to that temperature Indirect SH control using the discharge pipe temperature Determine a correction value of the electronic expansion valve compensation and drive it according to the deflection of the target d...

Page 78: ...e are three ways of control to detect insufficient gas I Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as insufficient gas The power consumption is weak comparing with that in the normal operation when gas is insufficient and gas insufficiency is detected by checking a power consumption I...

Page 79: ...voltage is detected each time equipment operation starts Cooling room temperature indoor heat exchanger temperature 4 0 C outdoor heat exchanger temperature outdoor temperature 4 0 C Heating indoor heat exchanger temperature room temperature 4 0 C outdoor temperature outdoor heat exchanger temperature 3 0 C Item Forced Cooling Forced operation allowing conditions 1 The outdoor unit is not abnormal...

Page 80: ... temperature rises the operation will start again Caution 1 If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind provide a windbreak wall 2 Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings 3 Do not place humidifiers or other items which might raise the humidity in rooms where fac...

Page 81: ...Control Specification SiENBE04 401A 72 Function and Control ...

Page 82: ... 2 2 Names of parts 77 2 3 Preparation before Operation 80 2 4 AUTO DRY COOL HEAT FAN Operation 83 2 5 Adjusting the Air Flow Direction 85 2 6 POWERFUL Operation 87 2 7 OUTDOOR UNIT SILENT Operation 88 2 8 HOME LEAVE Operation 89 2 9 INTELLIGENT EYE Operation 91 2 10 TIMER Operation 93 2 11 Care and Cleaning 95 2 12 Troubleshooting 98 ...

Page 83: ...clever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work and handing ...

Page 84: ...ric shocks fire etc For repairs and reinstallation consult your Daikin dealer for advice and information The refrigerant used in the air conditioner is safe Although leaks should not occur if for some reason any refrigerant happens to leak into the room make sure it does not come in contact with any flame as of gas heaters kerosene heaters or gas range If the air conditioner is not cooling heating...

Page 85: ...use check the unit stand and fittings for damage Do not touch the air inlet and aluminum fins of outdoor unit It may cause injury The appliance is not intended for use by young children or infirm persons without supervision Young children shuld be supervised to ensure that they do not play with the appliance To avoid oxygen deficiency ventilate the room sufficiently if equipment with burner is use...

Page 86: ...SiENBE04 401A Instruction System Configuration 77 2 2 Names of Parts FTK X S 20 25 35 50 D Indoor Unit 4 1 3 4 5 6 7 9 10 11 2 ON OFF 14 15 16 8 12 13 ...

Page 87: ...The louvers are inside of the air outlet page 13 p 12 Indoor Unit ON OFF switch page 10 Push this switch once to start operation Push once again to stop it The operation mode refers to the following table This switch is useful when the remote controller is missing 13 Operation lamp green 14 TIMER lamp yellow page 20 15 HOME LEAVE lamp red page 16 16 Signal receiver It receives signals from the rem...

Page 88: ...OWERFUL button for POWERFUL operation page 14 5 TEMPERATURE adjustment buttons It changes the temperature setting 6 ON OFF button Press this button once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN page 10 8 SILENT button for OUTDOOR UNIT SILENT operation page 15 9 FAN setting button It selects the air flow rate setting ...

Page 89: ...type and replace the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote control display begins to fade or if reception deteriorates please replace with new alkali batteries Do not use manganese batteries The attached batteries are provided for the initial use of the system The usable period of the ...

Page 90: ...it 2 Fix the holder to a wall a pillar or similar location with the screws procured locally 3 Place the remote control in the remote control holder About remote control Never expose the remote control to direct sunlight Dust on the signal transmitter or receiver will reduce the sensitivity Wipe off dust with soft cloth Signal communication may be disabled if an electronic starter type fluorescent ...

Page 91: ...n turn the breaker OFF Use the air conditioner in the following conditions Operation outside this humidity or temperature range may cause a safety device to disable the system C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SENSOR ON CANCEL OFF 1 3 2 Recommended temperature setting For cooling 26 C 28 C For heating 20 C 24 C Mode Operating conditions If operation is continued out of ...

Page 92: ...ances the mode setting in sequence AUTO DRY COOL HEAT FAN FTKS FTXS 2 Press ON OFF button The OPERATION lamp lights up To stop operation 3 Press ON OFF button again Then OPERATION lamp goes off To change the temperature setting 4 Press TEMPERATURE adjustment button C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SENSOR ON CANCEL OFF 2 3 1 4 5 ON OFF DRY or FAN mode AUTO or COOL or HE...

Page 93: ...efore the room gets warmer In heating operation frost may occur on the outdoor unit and lower the heating capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit Note on COOL operation This air conditioner cools the room by blowing the hot air in the room outside so if the outside temperature is...

Page 94: ...mfort To adjust the horizontal blades flaps 1 Press SWING button The display on the LCD and the flaps will begin to swing 2 When the flaps have reached the desired position press SWING button once more The display will go blank The flaps will stop moving C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SENSOR ON CANCEL OFF O N 1 2 ...

Page 95: ...nds on the operation mode See the figure ATTENTION Always use a remote control to adjust the flaps angle If you attempt to move it forcibly with hand when it is swinging the mechanism may be broken Be careful when adjusting the louvres Inside the air outlet a fan is rotating at a high speed 0º 25º 5º 30º When stop operation Upper limit in cooling Lower limit in cooling When stop operation Upper li...

Page 96: ...operation there are some functions which are not available To cancel POWERFUL operation 2 Press POWERFUL button again TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SENSOR ON CANCEL OFF O N 1 2 Notes on POWERFUL operation In COOL and HEAT mode To maximize the cooling heating effect the capacity of outdoor unit must be increased and the air flow rate be fixed to the maximum setting The...

Page 97: ...Note on OUTDOOR UNIT SILENT operation This function is available in COOL HEAT and AUTO modes This is not available in FAN and DRY mode POWERFUL operation and OUTDOOR UNIT SILENT operation cannot be used at the same time Priority is given to POWERFUL operation If operation is stopped using the remote controller or the main unit ON OFF switch when using OUTDOOR UNIT SILENT operation will remain on t...

Page 98: ...e please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate 1 Press HOME LEAVE button Make sure is displayed in the remote control display 2 Adjust the set temperature with or as you like 3 Adjust the air flow rate with FAN setting button as you like Home leave operation will run with these settings the next time you use the unit To c...

Page 99: ...you will be welcomed by a comfortably air conditioned room Push the HOME LEAVE Operation button again and the air conditioner will adjust capacity to the set temperature for normal operation Set the unit to HOME LEAVE Operation before leaving the living room when going to bed The unit will maintain the temperature in the room at a comfortable level while you sleep When you enter the living room in...

Page 100: ...TELLIGENT EYE operation 1 Press SENSOR button To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SENSOR ON CANCEL OFF 1 2 EX Back to normal operation When somebody in the room When nobody in the room Somebody back in the room Normal operation 20 min after start energy saving operation ...

Page 101: ... slightly in fan operation In FAN mode only Application range is as follows Sensor may not detect moving objects further than 5m away Check the application range Sensor detection sensitivity changes according to indoor unit location the speed of passersby temperature range etc The sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby INTEL...

Page 102: ...er button changes the setting rapidly 3 Press OFF TIMER button again The TIMER lamp lights up To cancel the OFF TIMER operation 4 Press CANCEL button The TIMER lamp goes off When TIMER is set the present time is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The memory is canceled when remote control batteries are replaced When operating the unit via the ON OFF Time...

Page 103: ...nges the setting rapidly 3 3 Press ON TIMER button again The TIMER lamp lights up To cancel the ON TIMER operation 4 Press CANCEL button The TIMER lamp goes off To combine ON TIMER and OFF TIMER A sample setting for combining the two timers is shown below In the following cases set the timer again After a breaker has turned OFF After a power failure After replacing batteries in the remote control ...

Page 104: ... with water dry it with cloth dry it up in the shade after washing 4 Attach the front panel Set the 3 keys of the front panel into the slots and push them in all the way Close the front panel slowly and push the panel at the 3 points 1 on each side and 1 in the middle Check to see if the rotating axis in the upper center section is moving Don t touch the metal parts of the indoor unit If you touch...

Page 105: ...eutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Air Purifying filter with photocatalytic deodorizing function gray The Air purifying filter with photocatalytic deodorizing function can be renewed by washing it with water once every 6 months We recommend replacing it once every 3 years Maintenance 1 Remove dust wi...

Page 106: ...t the inside Press MODE selector button and select FAN operation Press ON OFF button and start operation 2 After operation stops turn off the breaker for the room air conditioner 3 Clean the air filters and set them again 4 Take out batteries from the remote control Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may cause odour...

Page 107: ...am when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit This happens when the air in the room is cooled into mist by the cold air flow during cooling operation The indoor unit gives out odour This happens when smells of the room furniture or cigarettes are...

Page 108: ...ed Are the air flow rate and the air direction set appropriately Is the unit set to the INTELLIGENT EYE mode page 18 Operation stops suddenly OPERATION lamp flashes Are the air filters clean Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the breaker OFF Then turn it ON again and try operating the ...

Page 109: ...in poor performance It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user For specialist maintenance contact the service shop where you bought the air conditioner The maintenance cost must be born by the user Call the service shop immediately When an abnormality such as a burning smell occurs stop operation and turn the breaker OFF Continued opera...

Page 110: ...RE SENSOR OUTDOOR UNIT EA COOLING HEATING SWITCHING ERROR E5 OL STARTED E6 FAULTY COMPRESSOR START UP E7 DC FAN MOTOR FAULT E8 OPERATION HALT DUE TO DETECTION OF INPUT OVER CURRENT F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL F6 HIGH PRESSURE CONTROL IN COOLING H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR H8 CT ABNORMALITY H9 FAULTY SUCTION AIR TEMPERATURE SENSOR J3 FAULTY DISCHARGE PIP...

Page 111: ...Instruction SiENBE04 401A 102 System Configuration ...

Page 112: ... Error between Indoor and Outdoor Unit 115 4 7 OL Activation Compressor Overload 116 4 8 Compressor Lock 117 4 9 DC Fan Lock 118 4 10 Input Over Current Detection 119 4 11 Four Way Valve Abnormality 120 4 12 Discharge Pipe Temperature Control 122 4 13 High Pressure Control in Cooling 123 4 14 Position Sensor Abnormality 125 4 15 DC Voltage Current Sensor Abnormality 126 4 16 Thermistor or Related ...

Page 113: ...equipment operation 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of Operation Lamp Troubleshooting with LED Indication The outdoor unit has one green LED LEDA on the PCB The flashing green LED indicates normal condition of microcomputer operation ON OFF R2950 Indicator lamps ...

Page 114: ... C or higher only for heat pump model and cooling operation cannot be used when the outdoor air temperature is below 10 C Note Diagnosis with remote control indication 109 Equipment operates but does not cool or does not heat only for heat pump model Check for wiring and piping errors in the indoor and outdoor units connection wires and pipes Conduct the wiring piping error check described on the ...

Page 115: ...ep is produced The code indication changes in the sequence shown below and notifies with a long beep Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code display hold the timer cancel button down for 5 seconds The code display also cancels itself if the button is not pressed for 1 minute No Code No Code No Code 1 00 11 E7 21 UA 2 U4 12 C7 22 A5 3 F3 1...

Page 116: ...k 2 Press the TEMP button Press TEMPs or TEMPt and change the digit until you hear the sound of beep or pi pi 3 Diagnose by the sound H pi The number of tens does not accord with the error code H pi pi The number of tens accords with the error code H beep The both numbers of tens and units accord with the error code See 7 4 Enter the diagnosis mode again Press the MODE button The digit of the numb...

Page 117: ... both numbers of tens and units do not accord with the error code H pi pi The number of tens accords with the error code H beep The both numbers of tens and units accord with the error code 7 Determine the error code The digits indicated when you hear the beep sound are error code Error codes and description Refer to page 109 8 Exit from the diagnosis mode Press the MODE button R4088 R4089 ...

Page 118: ...om temperature thermistor abnormality 114 Outdoor Unit E5H OL activation compressor overload 116 E6H Compressor lock 117 E7 DC fan lock 118 E8 Input over current detection 119 EA Four way valve abnormality 120 F3 Discharge pipe temperature control 122 F6 High pressure control in cooling 123 H6 Position sensor abnormality 125 H8 DC voltage current sensor abnormality 126 H9 Outdoor air thermistor or...

Page 119: ...oss detection in approximately 10 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Connector connection check note YES Is it normal NO Correct connections Replace PCBs R1400 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Model Type Connec...

Page 120: ... according to the temperature detected by the indoor unit heat exchanger thermistor Malfunction Decision Conditions High pressure control During heating operations the temperature detected by the indoor heat exchanger thermistor is above 65 C Freeze up protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Supposed Causes Operation halt due to clogged air ...

Page 121: ...ccumulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is it very dirty Does it conform to the thermistor characteristic chart NO Provide sufficient air passage Clean the air filter Clean the heat exchanger Replace the indoor unit PCB Replace the thermistor replace the indoor unit PCB Caution Be sure to turn off power switch before connect or disconnect c...

Page 122: ... due to faulty indoor unit PCB Troubleshooting Check No 16 Refer to P 145 Rotate the fan by hand Check No 16 Check Hall IC Operate the fan Does it rotate NO Does it rotate smoothly Is there an output Is it at the rated voltage Is there conductivity NO Check the capacitor s conductivity Check the fan motor voltage immediately after re start Is it at the rated voltage Check the fan motor voltage NO ...

Page 123: ...ess than 120 ohms or below about 50 C more than 1 860 kohms Note The values vary slightly in some models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 6 Refer to P 140 C4 Heat exchanger thermistor C9 Room temperature thermistor Check the connector connection YES Correct the connection Replace the thermistor Replace the indoor unit PCB Replace the...

Page 124: ...nal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units wire No 2 Troubleshooting Check No 10 Refer to P 143 Check the outdoor unit s LED A Check the indoor unit outdoor unit connection wires YES YES Correct the indoor unit outdoor unit connection wires Diagnose the outdoor unit Replace the connection wires between the indoor and outdoor units Re...

Page 125: ...ubleshooting Check No 4 Refer to P 138 Check No 5 Refer to P 139 Check No 6 Refer to P 140 Check No 11 Refer to P 143 Insert the thermistor in position Replace the discharge pipe thermistor Replace the valve itself or the coil Replace the four way valve coil or the valve itself Replace the outdoor unit PCB Refer to the refrigerant line check procedure Replace the outdoor unit PCB R2841 Caution Be ...

Page 126: ...upposed Causes Compressor locked Compressor harness disconnected Troubleshooting Note If the model doesn t have SPM replace the outdoor unit PCB Turn off the power Disconnect the harnesses U V and W Inverter checker Part No 1225477 Correct the power supply or replace the SPM Replace the outdoor unit PCB Replace the compressor Check the electronic expansion valve Replace it as required Replace the ...

Page 127: ...n for about 5 minutes normal Supposed Causes Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Foreign matters stuck in the fan Troubleshooting Check No 15 Refer to P 144 R2843 Caution YES YES NO YES NO NO Turn off the power and reconnect the connector Remove Replace the outdoor unit fan motor Replace the outdoor unit PCB Be sure to turn off power s...

Page 128: ...del doesn t have SPM replace the outdoor unit PCB Replace the outdoor unit PCB Inverter checker Part No 1225477 Correct the power supply or replace the SPM Replace the outdoor unit PCB R2952 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Input current flowing above its stop level NO YES Any LED off YES NO Check with the inverter chec...

Page 129: ...ecked to see if they function within their normal ranges in the operating mode Malfunction Decision Conditions A following condition continues over 10 minute after operating 5 minutes Cooling dry operation room temp indoor heat exchanger temp 5 C Heating indoor unit heat exchanger temp room temp 5 C Supposed Causes Connector in poor contact Thermistor defective Outdoor unit PCB defective Four way ...

Page 130: ... power switch before connect or disconnect connector or parts damage may be occurred Four way valve coil disconnected loose YES YES NO Functioning NO Check No 11 Check the refrigerant line Malfunctioning z Insufficient gas z Water mixed z Stop valve defective Harness out of connector NO YES Disconnect the harness from the connector Resistance between harnesses about 3kΩ 0 5kΩ Malfunctioning Functi...

Page 131: ...ir temperature thermistor defective Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective Troubleshooting Check No 4 Refer to P 138 Check No 6 Refer to P 140 Check No 11 Refer to P 143 Stop temperatures A RK X S A RK X H R Y N 1 above 45Hz rising above 40Hz dropping 110 97 85 2 30 45Hz rising 25 40Hz dropping 105 92 80 3 below 30Hz ris...

Page 132: ...ng sensed by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 65 C The error is cleared when the temperature drops below 54 C Supposed Causes The installation space is not large enough Faulty outdoor unit fan Faulty electronic expansion valve Faulty defrost thermistor Faulty outd...

Page 133: ...air the connector or fan motor lead wires Replace the heat exchanger thermistor Replace PCB Replace the electronic expansion valve or coil Replace the PCB Change the air outlet grille position Change the installation location Clean the heat exchanger Check the installation space Check No 9 Outdoor fan check Judgment Check No 6 Heat exchanger thermistor check Judgment Check No 7 Installation condit...

Page 134: ...e disconnected Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 144 Replace the outdoor unit PCB Replace the outdoor unit PCB Reconnect as specified Inverter checker Part No 1225477 Correct the power supply or replace the outdoor unit PCB Replace the compressor R3041 Caution Be sure to turn off power ...

Page 135: ...cision Conditions The compressor running frequency is below 52 Hz The input current is also below 0 5 A If this error repeats 4 times the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Outdoor unit PCB defective Troubleshooting Replace the outdoor unit PCB Cauti...

Page 136: ...rature Malfunction Decision Conditions The thermistor input is above 4 96 V or below 0 04 V with the power on Error J3 is judged if the discharge pipe thermistor temperature is smaller than the condenser thermistor temperature Supposed Causes Connector in poor contact Thermistor defective Outdoor unit PCB defective Indoor unit PCB defective Condenser thermistor defective in the case of J3 error ou...

Page 137: ...at exchanger thermistor z Outdoor air thermistor Replace the following thermistor z Indoor heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB R4097 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again on remote controller NO YES YES YES NO Indoor heat exchanger thermistor functioning NO...

Page 138: ...in thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 80 C 90 C Reset is made when the temperature drops below 70 C 80 C value for A RK X H R Y N models Supposed Causes Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Fin thermistor defective Connector in poor contact Outd...

Page 139: ...off power switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES z Fin thermistor NO Slightly dirty Check No 9 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty Functioning Thermistor as specified in its characteristic chart Above 80 C 90 C NO YES NO YES Check the radiation fin temperature Check N...

Page 140: ...mperature with the compressor on is above 90 C 100 C for A RK X H R Y N models If a radiation fin temperature rise takes place 4 times successively the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Fin temperature rise due to defective outdoor unit fan Fin temp...

Page 141: ...sistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R4017 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again YES NO Slightly dirty Check No 9 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty Functioning Ther...

Page 142: ...is running An output over current input is fed from the output over current detection circuit to the microcomputer The system will be shut down if the error occurs 255 times Clearing condition Continuous run for about 10 minutes normal Supposed Causes Over current due to defective power transistor Over current due to wrong internal wiring Over current due to abnormal supply voltage Over current du...

Page 143: ...s have been disconnected and reconnected for part replacement for example and the system is interrupted by an output over current take the following procedure Error again NO YES NO YES Voltage as rated YES NO Short circuit or breakage between compressor s coil phases NO YES Normal YES NO Any LED off Turn off the power and turn it on again to get the system started See if the same error occurs Turn...

Page 144: ...del to model Gas shortage detection II If a gas shortage error takes place 4 times successively the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Gas shortage detection III When the difference of the temperature is smaller than it is regarded as insufficient gas Supposed Cause...

Page 145: ...unit heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R3318 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Any thermistor disconnected YES Malfunctioning NO Stop valve closed NO YES YES NO Gas shortage error again Functioning Check No 6 Check the thermistors YES NO Oil oozing at internal piping ...

Page 146: ...n Continuous run for about 10 minutes normal Supposed Causes Supply voltage not as specified Over voltage detection circuit defective PAM control part s defective Troubleshooting Note If the model doesn t have SPM replace the outdoor unit PCB Check the supply voltage Correct the power supply Check for such factors for a long term Replace the SPM Replace the outdoor unit PCB R2957 Caution Be sure t...

Page 147: ...conductivity using a tester Check the conductivity between pins 1 3 and 6 and between pins 2 4 and 5 If there is no conductivity between the pins the EV coil is faulty 4 If no EV generates latching sound in the above step 2 the outdoor unit PCB is faulty 5 If the conductivity is confirmed in the above step 2 mount a good coil which generated latching sound in the EV unit that did not generate latc...

Page 148: ... unit PCB Replace the four way valve coil Replace the four way valve R3047 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 3kΩ 0 5kΩ NO S80 voltage at DC 180 220 V with compressor on Fig 1 Disconnect the four way valve coil from the connector and check the continuity Fig 1 Voltage at S80 DC180 220V ON Compressor Time ...

Page 149: ...ance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R25 C 20kΩ B 3950 Temperature C 20 211 0 kΩ 15 150 10 116 5 5 88 0 67 2 5 51 9 10 40 15 31 8 20 25 25 20 30 16 35 13 40 10 6 45 8 7 50 7 2 Resistance range Tester 150 100 50 15 15 30 45 0 C R1437 kΩ R25 20kΩ B 3950 ...

Page 150: ... by the outdoor unit The outside air temperature shall be 43 C or lower Check the allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the opposite direction R1438 Abnormal YES YES YES Does the discharged air from other outdoor unit cause an increase of the suction air temperature NO NO NO Is the heat exchanger very dirty Discharge pre...

Page 151: ...m functioning Go to Check No 15 Check the fan motor lead wire connector for secure connection Abnormal YES NO NO Continuity Are the resistance at connector leads 1 red black 2 white black Check the fan capacitor for continuity Does the outdoor fan rotate Does the outdoor unit fan start just after the power is turned on Check the outdoor fan system YES YES NO Normal No continuity Repair Replace the...

Page 152: ...waveform disturbance near the zero cross sections circled in Fig 2 5 1 8 Inverter Units Refrigerant System Check Check No 11 Fig 1 Fig 2 Refrigerant system check Check for gas leaks See the section on insufficient gas detection Conduct the check after operating the equipment for a sufficient length of time Correct the problem Conduct vacuum drying Replace the refrigerant Is the discharge thermiste...

Page 153: ...er off and disconnect the connector S70 2 Make sure there is about DC 270 V between pins 4 and 7 3 With the system and the power still off reconnect the connector S70 4 Make a turn of the fan motor with a hand and make sure the pulse 0 15 V appears twice at pins 1 and 4 If the fuse is blown out the outdoor unit fan may also be in trouble Check the fan too If the voltage in Step 2 is not applied it...

Page 154: ...e connector connected check the following Output voltage of about 5 V between pins 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 Æ faulty PCB Æ Replace the PCB Failure of 2 Æ faulty Hall IC Æ Replace the fan motor Both 1 and 2 result Æ Replace the PCB Gray power supply Purple signals Blue grounding ...

Page 155: ...Check SiENBE04 401A 146 Service Diagnosis ...

Page 156: ...f Panels and Fan Motor 170 2 2 Removal of Electrical Box 177 2 3 Removal of Reactor and Partition Plate 179 2 4 Removal of Sound Blanket 181 2 5 Removal of Four Way Valve 183 2 6 Removal of Compressor 185 2 7 Removal of PCB 187 3 Outdoor Unit RK X H C ARK X H C R Y N C 190 3 1 Removal of External Panels 190 3 2 Removal of Bell mouth 193 3 3 Removal of PCB and Electrical Box 194 3 4 Removal of Prop...

Page 157: ... 5 seconds a forced cooling operation will be carried out for approx 15 minutes 2 Removing air filters 1 Pull protrusions on left and right sides of panel with fingers and open front grille all the way 2 Lift center section of air filter and disengage hooks Remove air filter by pulling forward Left and right filters are interchangeable To re install insert air filter along the guide ON OFF button ...

Page 158: ...unit s panel and open up the panel to the position higher than it will stop Support the front panel by one hand while remove the rotation axis at the upper center by the other hand And pull out the front panel forward to remove 2 Remove front panel from the unit Step Procedure Points Rotation axis Slide the center rotary axis the left and remove it out R2512 ...

Page 159: ...Indoor Unit SiENBE04 401A 150 Removal Procedure 3 When restoring the air filter make sure that the projection parts on the panel are in the guide groove and then shut the panel Step Procedure Points ...

Page 160: ...ure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Opening and closing of service cover 1 Remove a service cover mounting screw Open service cover upward A switch for field setting is not provided in particular Connection wires R2516 ...

Page 161: ...e existing models are not provided 2 Disengage the two hooks on the upper part In case that the hooks are not pressed from above remove the front panel and then remove the grille while pushing the hook through a clearance between the front grille and the heat exchanger At the upper part there are two hooks in the left and the right Disengage the hooks by pressing knobs with a screwdriver Step Proc...

Page 162: ...it Removal Procedure 153 3 The front grille can be removed in a manner to pull out the upper part forward and lift up the lower part When restoring the grille Make sure whether each hook is set as it was Step Procedure Points ...

Page 163: ...e after turning off all power supplies before disassembling work Step Procedure Points 1 Remove horizontal blade 1 Lift horizontal blade to open position Screw stoppers inside the flap which were equipped in the existing models are not provided 2 Disengage horizontal blade from blade retaining section 3 Bend blade slightly and remove it from the unit ...

Page 164: ...ade to the tip while rotating it 2 Restore the two fixed parts of the horizontal blade onto the hook 2 Removal of vertical blade 1 Disengage the vertical blade s joint from the fixed plate 2 Remove the blade forward Five vertical blades are integrated with the joint rod so only one blade can t be exchanged Step Procedure Points Fixed plate R2527 ...

Page 165: ...ires 2 Disconnect connectors S1 and S7 of fan motor Pay attention to the direction of the retainer of the thermistor so that the retainer will not touch the harness same as the existing models 3 Disconnect one connector S6 of swing motor 4 Remove heat exchanger thermistor Terminal board Earth screw Heat exchanger thermistor Swing motor PC Board S1 S7 S6 Plate of connection wires R2529 Heat exchang...

Page 166: ...1A Indoor Unit Removal Procedure 157 5 Remove a screw on the terminal board The electrical box can be removed instead of disengaging the terminal board 6 Remove a screw on the electrical box Step Procedure Points ...

Page 167: ...Indoor Unit SiENBE04 401A 158 Removal Procedure 7 Pull up the electrical box forward to remove A hook is provided on the behind Step Procedure Points ...

Page 168: ... shelter 2 Disengage the front plate of the electrical box Disengage the knobs by pushing the two hooks at the top and the bottom 3 Sliding to the left the front part of the electrical box can be removed Step Procedure Points Shelter R2535 Pushing point Pushing point Push R2536 ...

Page 169: ...dure 4 Disengage the four knobs on the back of the signal receiver PCB 5 Signal receiver PCB Step Procedure Points PC Board R2538 Knob R2539 LED1 Green LED2 Yellow LED3 Red SW7 ON OFF button Thermistor INTELLIGENT EYE sensor PCB S35 S26 S27 S36 ...

Page 170: ...ove swing motor assembly remove two screws Manual adjusting for the vertical blades Provide a supporter so that the joint link will not drop off in case the horizontal blade assembly is removed Step Procedure Points JC JB R2541 Glass tabu fuse 3 15A 250V S21 HA terminal S32 Heat exchanger thermistor S7 Fan motor S6 Swing motor JA Address Swing motor R2543 ...

Page 171: ... refrigerating cycle Mixing of air or other gas causes abnormal temperature rise in refrigerating cycle and this results in pipe rupture or personal injuries Pay attention so that the residual drain will not make a floor dirty In case that a drain hose is buried inside a wall remove it after the drain hose in the wall is pulled out 1 Remove the drain hose Make curing so that the residual drain wat...

Page 172: ...e deformation 6 Disengage hooks located right and left side and pull heat exchanger forward The hooks are symmetrically placed in the right and the left Lifting the heat exchanger slightly upward to the right the left hook comes to be disengaged easily Step Procedure Points Pipe retainer R2547 This hook is located borh side of heat exchanger Press this hook to remove heat exchanger easily ...

Page 173: ...01A 164 Removal Procedure 7 Lift and remove heat exchanger Caution When removing or re installing heat exchanger be sure to wear protective gloves or wrap heat exchanger with cloths Fins can cut fingers Step Procedure Points ...

Page 174: ...ore disassembling work Step Procedure Points 1 Disconnect drain hose The drain pan is integrated with the bottom plate 2 Pull out the drain plug in the left on the drain pan by hand 3 Insert the drain hose Push it into the inner part firmly 4 Push the drain plug into the right by Allen wrench Push it into the inner part firmly Drain plug R2553 Allen wrench 4 mm R2555 ...

Page 175: ...l of Fan Rotor and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove heat exchanger 1 To remove right side plate remove three screws Right side plate R2557 ...

Page 176: ...SiENBE04 401A Indoor Unit Removal Procedure 167 2 Disengage hook 3 Loosen the hexagon head set screw on the fan rotor Step Procedure Points Hook R2558 ...

Page 177: ...Indoor Unit SiENBE04 401A 168 Removal Procedure 4 Remove the motor and fan rotor 5 Remove a screw on the left side plate Step Procedure Points Disengage a hook from the backward R2562 ...

Page 178: ...9 6 Disengage a hook from the backward 7 Since the fan bearing is made of rubber push it strongly off from the inside The bearing can be removed just as the left side plate is attached with Step Procedure Points Left side plate R2564 Bearing R2565 ...

Page 179: ...urning off all power supplies before disassembling work Step Procedure Points 1 Features Take care not to cut your finger by the fins of the heat exchanger The stop valve cover is united with the shelter When reassembling make sure to fit the 5 hooks 1 Loosen the screw of the stop valve cover Pull down the stop valve cover and remove it Handle Outdoor air thermistor Stop valve cover Shelter Hooks ...

Page 180: ...ls 1 Loosen the 3 screws front right left and lift the top panel 2 Remove the drip proof plate 3 Disconnect the connector for fan motor S70 The fan motor is united with the front panel 4 Loosen the 5 screws of the front panel Step Procedure Points Top panel Drip proof plate Front panel ...

Page 181: ... hooks The fan motor is united with the front panel 3 Remove the fan motor The screw has reverse winding 1 Unscrew the washer fitted nut M10 of the propeller fan with a spanner 2 Remove the propeller fan Align mark of the propeller fan with D cut section of the motor shaft when reassembling Step Procedure Points Hooks Propeller fan D cut ...

Page 182: ...lift the bell mouth to undo the hooks Remove the bell mouth 4 Loosen the fixing hooks and release the lead wire Put the lead wire through the back of the motor when reassembling so as not to be entangled with the propeller fan Step Procedure Points Bell mouth Hooks R3249 Lead wire Propeller fan ...

Page 183: ...ARK X S C SiENBE04 401A 174 Removal Procedure 5 Loosen the 4 screws to remove the fan motor M4 16 DC fan motor 6 Loosen the 2 screws to remove the fan motor fixing frame Step Procedure Points Fan motor Fan motor fixing frame ...

Page 184: ...ARK X S C Removal Procedure 175 4 Remove the right side panel 1 Loosen the 2 screws on the rear side 2 Loosen the 3 screws on the right side 3 Loosen the screw and lift the connection port to remove Step Procedure Points Right side panel ...

Page 185: ...Outdoor Unit RK X S C ARK X S C SiENBE04 401A 176 Removal Procedure When reassembling make sure to fit the hook Step Procedure Points Hook ...

Page 186: ... power supplies before disassembling work Step Procedure Points Remove the top panel Disconnect the connector for fan motor 1 Remove the electrical box 1 Disconnect the 2 reactor harnesses 2 Disconnect the relay connector for compressor lead wire 3 Disconnect the connector for four way valve S80 When reassembling coil the excessive lead wire and hang the loop on the hook ...

Page 187: ... thermistor Pay attention so as not to lose the clip for thermistor 5 Release the heat exchanger thermistor Pay attention so as not to lose the clip 6 Lift and remove the electrical box Step Procedure Points Discharge pipe thermistor Thermister Piping Clip Heat exchanger thermistor Electrical box ...

Page 188: ... Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the outer panels Remove the electrical box 1 Remove the reactor 1 Loosen the screw Lift and remove the reactor 2 Remove the partition plate 1 Loosen the 2 screws Reactor Partition plate ...

Page 189: ...RK X S C SiENBE04 401A 180 Removal Procedure 2 The partition plate has a hook on the lower side Lift and pull the partition plate to remove When reassembling fit the lower hook into the bottom frame Step Procedure Points Hook ...

Page 190: ...supplies before disassembling work Step Procedure Points Remove the outer panels Remove the electrical box 1 Remove the sound blanket 1 Untie the strings and open the sound blanket 2 Lift and remove the sound blanket body as it is opened Since the piping ports on the sound blanket are torn easily remove the blanket carefully 3 Lift and remove the sound blanket top Sound blanket ...

Page 191: ...K X S C SiENBE04 401A 182 Removal Procedure 4 Pull the sound blanket inner out Since the piping ports on the sound blanket are torn easily remove the blanket carefully 5 Pull the sound blanket bottom out Step Procedure Points ...

Page 192: ...g off all power supplies before disassembling work Step Procedure Points 1 Remove the peripheries Remove the four way valve and the sheets of putty so as not to burn them 1 Remove the terminal cover Be careful so as not to burn the compressor terminals or the name plate Make a note 2 Loosen the screw of the four way valve coil Terminal cover Red U Yellow V Blue W ...

Page 193: ... with a tube cutter 4 Heat up the brazed part and withdraw the piping with pliers Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to break the pipes by pressing it excessively by pliers when withdrawing it Step Procedure Points Tube cutter ...

Page 194: ... so as not to burn the heat exchanger fin Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately In case of the difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 Cut pipes on the main unit by a miniature copper tube cutter in order to make it easy to disconn...

Page 195: ...Outdoor Unit RK X S C ARK X S C SiENBE04 401A 186 Removal Procedure Step Procedure Points 3 Heat up the brazed part of the suction side and disconnect 4 Lift the compressor up and remove it ...

Page 196: ... after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the PCB You can remove the PCB when you disconnect the read wires on the terminal board without removing the electrical box PbF Pb free brazing is adopted 1 Feature of the PCB 2 Loosen the screw on the terminal board 3 Release the earth terminal ...

Page 197: ...Outdoor Unit RK X S C ARK X S C SiENBE04 401A 188 Removal Procedure 4 Loosen the 4 screws 5 Undo the 3 hooks on the upper side 6 Lift and pull out the PCB Step Procedure Points Hooks ...

Page 198: ...S C Removal Procedure 189 7 Feature of the PCB S70 fan motor S80 four way valve S90 thermistor outdoor air heat exchanger discharge pipe Step Procedure Points PbF Pb free soldering Glass fuse 3 15A Glass fuse LED A V3 Varistor S90 S70 S80 R3292 ...

Page 199: ...after turning off all power supplies before disassembling work Step Procedure Points 1 The stop valve cover can be removed when the fixing screw is removed As hooks are provided slide the cover downward to remove The forced cooling operation in the pumping down mode can be carried out by pushing the ON OFF button on the indoor unit for 5 seconds Stop valve cover R4026 Stop valve liquid Stop valve ...

Page 200: ...ront panel 3 Remove the 3 screws on the left side 4 Remove the fixing screw in the rear of the top panel Once lift the top panel and then remove it forward The left side panel and the bell mouth can be removed all at once When restoring the top panel move it horizontally and get it down for the easy work Step Procedure Points Top panel Front panel Left side panel Fixing screw in the rear of the to...

Page 201: ... 401A 192 Removal Procedure 5 The front panel and the left side panel can be separated when the fixing screw is removed Sectional view at the front Step Procedure Points R4105 Top panel The edge of the top panel gets into this groove Left side panel ...

Page 202: ...tes or more after turning off all power supplies before disassembling work Step Procedure Points 1 The bell mouth is attached to the front plate with 2 screws and 4 hooks 2 Remove the 2 screws and undo the 4 hooks to release the bell mouth Slide the bell mouth in the arrow direction to disengage the hook B Hook A Bell mouth Hook B Screw Hook B ...

Page 203: ...all power supplies before disassembling work Step Procedure Points 1 Remove the drip proof plate The drip proof plate has 5 hooks Be sure to restore the drip proof plate and to avoid losing or damaging it 1 Undo the 5 hooks and remove the drip proof plate 2 Remove the PCB 1 2 Disconnect the earth terminal Remove the insulation sheet Drip proof plate R4027 R4028 Insulation sheet R4029 ...

Page 204: ...SiENBE04 401A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 195 3 Disconnect the fan motor connector S70 4 Disconnect the four way valve connector S80 Step Procedure Points R4030 R4031 R4032 ...

Page 205: ...NBE04 401A 196 Removal Procedure 5 Disconnect the electronic expansion valve connector S20 6 Disconnect the thermistor connector S90 outdoor air heat exchanger discharge pipe 7 Disconnect the relay harness Step Procedure Points R4033 R4034 R4035 ...

Page 206: ...SiENBE04 401A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 197 8 Disconnect the 2 reactor harnesses 9 Disconnect the 4 wire harnesses Step Procedure Points R4036 R4037 R4038 ...

Page 207: ... X H C R Y N C SiENBE04 401A 198 Removal Procedure 10 Remove the 5 screws fixing the PCB 11 Undo the 4 hooks and the PCB can be disengaged The PCB has 4 hooks 12 Control PCB outdoor unit Step Procedure Points R4039 R4040 R4041 ...

Page 208: ...ocedure 199 3 Remove the electrical box 1 Release the lead wire of the fan motor from the ditch 2 Remove the 2 screws fixing the electrical box 3 Remove the screw of the terminal board cover Step Procedure Points R4042 Electrical box R4043 Terminal board cover R4044 ...

Page 209: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 401A 200 Removal Procedure 4 Remove the terminal board cover 5 Lift and remove the electrical box Step Procedure Points R4045 R4046 ...

Page 210: ...s or more after turning off all power supplies before disassembling work Step Procedure Points Remove the external panels and the drip proof plate protecting the electrical parts Be sure to restore the drip proof plate and to avoid losing or damaging it 1 Remove the 2 screws of the fan motor assembly 2 Release the 2 hooks of the fan motor stand R4047 R4048 R4049 ...

Page 211: ...mbly 4 The propeller fan can be removed when the washer faced nut M8 is removed When restoring match the t mark of the propeller fan with the D cut of the motor shaft The fan should be restored so that the mark z will be at upper part of the fan motor 5 Release the lead wire from the hooks R4050 Propeller fan R4051 Mark R4052 ...

Page 212: ...SiENBE04 401A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 203 Step Procedure Points 6 Remove the 2 screws for removing the fan motor 7 Remove the fan motor Fan motor R4053 R4054 ...

Page 213: ...ng off all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel 1 2 Remove the 3 screws for removing the right side panel Lift the right side panel to disengage the hooks Insert the 3 hooks for the restoration 2 Remove the partition plate 1 Remove the 2 screws fixing the partition plate Right side panel R4055 Hooks R4056 Partition plate R4057 ...

Page 214: ...A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 205 2 Pull the partition plate upward to remove 3 When restoring the partition plate fit the hook into the bottom frame Step Procedure Points R4058 R4059 ...

Page 215: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 401A 206 Removal Procedure 3 Remove the reactor 1 The reactor can be released by removing the screw Step Procedure Points Reactor R4060 R4061 ...

Page 216: ...bling work Step Procedure Points 1 Remove the sound insulation pad Since the slit prepared for the piping connection on the sound insulation pad is torn easily remove the pad carefully When restoring the sound insulation pad should pass the internal side of the piping 1 Untie the string fixing the sound insulation pad to the compressor 2 Pull out the sound insulation pad for the body Sound insulat...

Page 217: ...e the slit prepared for the piping on the sound insulation pad is torn easily remove the pad carefully 4 Pull out the under pad of the top sound insulation 5 Pull out the inner sound insulation pad When restoring the sound insulation pad should pass the internal side of the piping Step Procedure Points R4064 R4065 R4066 ...

Page 218: ...SiENBE04 401A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 209 6 Pull out the bottom sound insulation pad Step Procedure Points R4067 ...

Page 219: ...essor so as not to be burnt out by a gas brazing machine 2 Release the heat exchanger thermistor The thermistor for the heat exchanger is fixed by a clamp material at one portion Be sure to fix the thermistor back on the original position when restoring Warning Ventilate when the refrigerant leaks during the work If the refrigerant is exposed to the fire it will cause toxic gas Pay attention so as...

Page 220: ...SiENBE04 401A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 211 4 Loosen the screw and remove the four way valve coil Step Procedure Points Four way valve coil R4071 R4072 ...

Page 221: ...revent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat For the sake of this wrap the four way valve with wet cloth and make up water so that the cloth will not be dried and avoid excessive heating It keeps below 120 C Be careful so as not to break pipes by pressing the pipes excessively by pliers when withdrawing the piping 5 Provide a p...

Page 222: ...be cutter in order to make it easy to remove NOTE Don t use a metal saw for cutting pipes by all means because the chips come into the circuit Cautions at the restoration Wrap the motor valve with wet cloth and make up water so that the cloth will not be dried and avoid excessive heating Caution Be careful about four way valve pipes and so on which were heated up by a gas brazing machine so as not...

Page 223: ...ound the compressor Be careful so as not to burn the compressor terminals or the name plate 1 Remove the terminal cover and the lead wires of the compressor so as not to be burnt out by a gas brazing machine 2 Remove the compressor 1 The mounting nut for the compressor is only one piece Remove the four way valve and the electronic expansion valve also so as not to be burnt out 2 Remove the nut by ...

Page 224: ...g the work If the refrigerant is exposed to the fire it will cause toxic gas Caution Be careful about pipes and so on which were heated up by a gas brazing machine so as not to get burnt on your hands Pay attention so that the fins of the heat exchanger will not be burnt Be sure to apply nitrogen s replacement when heating up the brazing part 3 Remove the brazing part on the discharge side of the ...

Page 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 401A 216 Removal Procedure ...

Page 226: ...SiENBE04 401A Others 217 Part 8 Others 1 Others 218 1 1 Test Run from the Remote Control 218 1 2 Jumper Settings 219 ...

Page 227: ...ing 1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts such as louver movement are working properly The air conditioner requires a small amount of power in its standby mode If the system ...

Page 228: ...Remove the drip proof plate 4 tabs 4 Cut the address jumper JA on the control PCB Infrared remote control 1 Slide the front cover and take it off 2 Cut the address jumper J4 1 2 2 Jumper Setting R2871 R2872 Jumper On indoor control PCB Function When connected factory set When cut JC Power failure recovery function Auto restart Unit does not resume operation after recovering from a power failure Ti...

Page 229: ...Others SiENBE04 401A 220 Others ...

Page 230: ...SiENBE04 401A Appendix 221 Part 9 Appendix 1 Piping Diagrams 222 1 1 Indoor Units 222 1 2 Outdoor Units 223 2 Wiring Diagrams 227 2 1 Indoor Units 227 2 2 Outdoor Units 228 ...

Page 231: ...TXS20 25 35CAVMB ATXS20 25 35DAVMB M FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 7 9CuT REFRIGERANT FLOW FAN MOTOR ON HEAT EXCH THERMISTOR INDOOR UNIT COOLING 7 0CuT 6 4CuT 9 5CuT HEAT EXCHANGER 6 4CuT 6 4CuT CROSS FLOW FAN 4D033698E FIELD PIPING 6 4CuT FIELD PIPING 9 5CuT 7 9CuT CROSS FLOW FAN FAN MOTOR THERMISTOR ON HEAT EXCH M INDOOR UNIT 7 0CuT 6 4CuT REFRIGERANT FLOW COOLING HEATING 9 5CuT HEAT E...

Page 232: ...ED VALVE MUFFLER WITH FILTER MUFFLER 9 5CuT 6 4CuT LIQUID STOP VALVE GAS STOP VALVE FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 9 5CuT 7 9CuT REFRIGERANTF LOW COOLING 3D043690C 9 5CuT 9 5CuT 7 0CuT 7 0CuT THERMISTOR DISCHARGE PIPE OUTDOOR UNIT MUFFLER PROPELLER FAN HEAT EXCHANGER 7 9CuT 7 9CuT M VALVE FOUR WAY NORMALLY OFF COMPRESSOR 9 5CuT 4 8CuT 4 8CuT HEAT EXCHANER THERMISTOR 9 5CuT ACCUMULATOR MUF...

Page 233: ...G MUFFLER FILTER WITH MUFFLER 6 4CuT MUFFLER VALVE MOTOR OPERATED 9 5CuT MUFFLER 6 4CuT 6 4CuT FILTER WITH VALVE LIQUID STOP VALVE GAS STOP FIELD PIPING FIELD PIPING 9 5CuT 6 4CuT 3D042770C MUFFLER 7 9CuT THERMISTOR DISCHARGE PIPE 7 9CuT 7 9CuT OUTDOOR UNIT 7 9CuT PROPELLER FAN HEAT EXCHANGER M COMPRESSOR 7 9CuT HEAT EXCHANGER THERMISTOR 9 5CuT ACCUMULATOR OUTDOOR TEMPERATURE THERMISTOR 6 4CuT 9 5...

Page 234: ...ESSOR ACCUMULATOR 9 5CuT MUFFLER 9 5CuT GAS STOP VALVE FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT LIQUID STOP VALVE 6 4CuT REFRIGERANT FLOW HEATING COOLING 3D043688C 9 5CuT 9 5CuT 7 0CuT 7 0CuT THERMISTOR DISCHARGE PIPE OUTDOOR UNIT MUFFLER PROPELLER FAN HEAT EXCHANGER 7 9CuT 7 9CuT M COMPRESSOR VALVE FOUR WAY ON HEATING 9 5CuT 4 8CuT 4 8CuT HEAT EXCHANER THERMISTOR 9 5CuT ACCUMULATOR MUFFLER FILTER ...

Page 235: ...ATING COOLING MUFFLER 6 4CuT VALVE MOTOR OPERATED MUFFLER 9 5CuT 6 4CuT 6 4CuT FILTER LIQUID RECEIVER WITH VALVE LIQUID STOP VALVE GAS STOP FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 3D042768C 9 5CuT 7 9CuT 7 9CuT THERMISTOR DISCHARGE PIPE OUTDOOR UNIT MUFFLER PROPELLER FAN HEAT EXCHANGER 7 9CuT M COMPRESSOR VALVE FOUR WAY ON HEATING 9 5CuT 7 9CuT HEAT EXCHANGER THERMISTOR 9 5CuT ACCUMULATOR OUTDOOR ...

Page 236: ... SWITCH X1M TERMINAL STRIP H2 H3 H1 GRN WHT RED BLK YLW X1M 2 3 1 NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN CAUTION FIELD WIRING 2 3 1 outdoor 3D033599G LED1 PCB2 H1P RECEIVER SIGNAL CONTROLLER LED2 H2P S1W WIRELESS REMOTE LED3 H3P R1T S27 t S26 S32 R2T t S21 PCB1 FU C70 TERMINAL FOR CENTRALIZED CONTROL FUSE PROTECTIVE EARTH S6 RUN...

Page 237: ...VALVE COIL PROTECTIVE EARTH FERRITE CORE TERMINAL STRIP HR2 3 OUTDOOR DB1 IC11 PCB2 R1T 1 CONDENSER BLK t BLK S90 HC3 R2T BLK DB2 t BLK DISCHARGE R3T BLK 6 t BLK S70 C75 C74 1 HC4 WHT 2 ORG 1 3 M BRN 4 M1F BLU C94 3 15A 7 FU2 RED C95 2 Q1L S40 BLK GRY 1 S30 W W 5 BLU M1C IPM1 V V 3 YLW U 1 U N 2 Z1C RED 3D042576H N L FIELD WIRING indoor 3 2 1 X1M L 3 N 2 1 HN1 HL1 E S FU3 20A V2 V3 SA1 L1 outdoor ...

Page 238: ... 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS X1M TERMINAL STRIP C74 C75 C80 C94 C95 C100 CAPACITOR DB1 DB2 DIODE BRIDGE FU1 FU3 FUSE L LIVE L1 COIL L1R REACTOR M1C COMPRESSOR MOTOR M1F FAN MOTOR PCB PRINTED CIRCUIT BOARD MRCW MRL MRM10 MRM20 MAGNETIC RELAY N NEUTRAL Q1L OVERLOAD PROTECTOR R1T R2T R3T THERMISTOR S20 S70 S80 S90 CONNECTOR SA1 SURGE ARRESTER Z1C Z2C Z3C FERRITE CORE IC11 TRIA...

Page 239: ...Wiring Diagrams SiENBE04 401A 230 Appendix ...

Page 240: ...scharge pipe thermistor 196 electronic expansion valve 196 fan motor 156 171 195 four way valve 177 195 outdoor air thermistor 196 outdoor heat exchanger thermistor 196 swing motor 156 control pcb indoor unit 39 161 control pcb outdoor unit 41 42 187 198 cover service cover 151 stop valve cover 170 190 terminal board cover 199 terminal cover 183 210 214 D dc fan lock 118 dc voltage current sensor ...

Page 241: ... thermistor 114 156 210 heat exchanger thermistor connector 196 heating peak cut control 64 high pressure control 111 high pressure control in cooling 123 hl3 40 hn3 40 home leave operation 53 horizontal blade 154 hot start function 55 I indoor heat exchanger thermistor 56 57 indoor unit pcb abnormality 110 input current control 63 input over current detection 119 installation condition check 141 ...

Page 242: ...controller 106 right side panel 175 204 right side plate 166 room temperature thermistor 114 rth1 38 S s1 38 156 s10 40 s11 40 s20 40 42 196 s21 38 s26 38 s27 38 s30 40 s32 38 s35 38 s36 38 s40 40 s6 38 156 s7 38 156 s70 40 42 171 195 s80 40 42 177 195 s90 40 42 196 safety precautions 75 self diagnosis digital display 55 sensor malfunction detection 69 service check function 106 service cover 151 ...

Page 243: ...SiENBE04 401A iv Index varistor 38 40 42 vertical blade 155 voltage detection function 70 W wide angle louvres 46 wiring diagrams 227 ...

Page 244: ...ome leave operation 53 I indoor unit pcb abnormality 110 input current control 63 input over current detection 119 installation condition check 141 insufficient gas 135 insufficient gas control 69 intelligent eye 51 intelligent eye sensor pcb 39 inverter features 45 inverter powerful operation 54 inverter units refrigerant system check 143 J jumper settings 219 M mode hierarchy 58 N night set mode...

Page 245: ...e pipe temperature control 68 thermistor or related abnormality indoor unit 114 thermistor or related abnormality outdoor unit 127 thermistor resistance check 140 trial operation from remote controller 218 turning speed pulse input on the outdoor unit pcb check 144 W wiring diagrams ark x s 20 25 35 cvmb 228 arkh20 25 35cavmb 228 arkh20 25 35cvmb9 228 arxh20 25 35cavmb 229 arxh20 25 35cvmb9 229 at...

Page 246: ...20 336 RPR Oostende The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N V Daikin Europe N V has compiled the content of this publication to the best of its knowledge No express or implied warranty is given for the completeness accuracy reliability or fitness for particular purpose of its content and the products and services ...

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