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Daikin FTKS20D3VMW, Service Manual

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Daikin FTKS20D3VMW Service Manual Download Page 88

SiENBE12-713

Function of Main Structural Parts

Function and Control

77

2. Function of Main Structural Parts

2.1

Main Structural Parts

Heat Pump Model

Cooling Only 
Model

Note:

Expansion Valve : In Case of 2 port model.....EVA-B, 3 port model.....EVA-C, 
4 port model.....EVA-D

Four way valve

Compressor

EV

B

EV

C

EV

D

EV

A

Expansion valve

(R5066)

Compressor

EV

B

EV

C

EV

D

EV

A

Expansion valve

(R4596)

Summary of Contents for FTKS20D3VMW

Page 1: ...SiENBE12 713 Service Manual Applied Models Inverter pair Cooling mode Inverter pair Heating mode F Series...

Page 2: ...FTKS50D2V1W FVXS50FV1B FTKS50D2V1L FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Outdoor Unit 4MKS75F2V1B Heat Pump Indoor Unit FTXG25EV1BW FTXS35D3VMW FDXS25CAVMB FLXS25BAVMB FTXG25EV1BS FTXS35D3VML FDXS35CAVMB...

Page 3: ...iling Suspended Type 54 1 6 Outdoor Units 56 Part 4 Function and Control 59 1 Main Functions 60 1 1 Frequency Principle 60 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing 62 1 3 Operati...

Page 4: ...tion on the Remote Control 233 4 1 Error Codes and Description of Fault 233 5 Troubleshooting 234 5 1 Indoor Units 234 5 2 Outdoor Units 235 5 3 Indoor Unit PCB Abnormality 236 5 4 Freeze up Protectio...

Page 5: ...288 1 1 Removal of the Panels and Plates 288 1 2 Removal of the Electrical Box 292 1 3 Removal of the PCB 300 1 4 Removal of the Propeller Fan Fan Motor 306 1 5 Removal of the Sound Blanket 308 1 6 R...

Page 6: ...wer cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shook If it is necessary to sup...

Page 7: ...ctrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or...

Page 8: ...heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the t...

Page 9: ...ent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions o...

Page 10: ...e to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water may enter the room and wet the furniture and floor For unitary type only C...

Page 11: ...Introduction SiENBE12 713 x...

Page 12: ...SiENBE12 713 List of Functions 1 Part 1 List of Functions 1 List of Functions 2 1 1 Cooling Only Models 2 1 2 Heat Pump Models 7...

Page 13: ...our On Off Timer 3 Step Airflow H P Only 72 Hour On Off Timer Comfort Control Auto Fan Speed Night Set Mode Indoor Unit Quiet Operation Worry Free Reliability Durability Auto Restart after Power Failu...

Page 14: ...On Off Timer 3 Step Airflow H P Only Night Set Mode Comfort Control Auto Fan Speed Worry Free Reliability Durability Auto Restart after Power Failure Indoor Unit Quiet Operation Self Diagnosis Digita...

Page 15: ...f Timer Comfort Airflow Mode Night Set Mode 3 Step Airflow H P Only Worry Free Reliability Durability Auto Restart after Power Failure Comfort Control Auto Fan Speed Self Diagnosis Digital LED Display...

Page 16: ...Timer Comfort Airflow Mode Night Set Mode 3 Step Airflow H P Only Worry Free Reliability Durability Auto Restart after Power Failure Comfort Control Auto Fan Speed Self Diagnosis Digital LED Display...

Page 17: ...Night Set Mode 3 Step Airflow H P Only Worry Free Reliability Durability Auto Restart after Power Failure Comfort Control Auto Fan Speed Self Diagnosis Digital LED Display Indoor Unit Quiet Operation...

Page 18: ...Timer 3 Step Airflow H P Only 72 Hour On Off Timer Comfort Control Auto Fan Speed Night Set Mode Indoor Unit Quiet Operation Worry Free Reliability Durability Auto Restart after Power Failure Night Qu...

Page 19: ...flow Mode 72 Hour On Off Timer 3 Step Airflow H P Only Night Set Mode Comfort Control Auto Fan Speed Worry Free Reliability Durability Auto Restart after Power Failure Indoor Unit Quiet Operation Self...

Page 20: ...ight Set Mode 3 Step Airflow H P Only Worry Free Reliability Durability Auto Restart after Power Failure Comfort Control Auto Fan Speed Self Diagnosis Digital LED Display Indoor Unit Quiet Operation W...

Page 21: ...Hour On Off Timer 3 Step Airflow H P Only Night Set Mode Comfort Control Auto Fan Speed Worry Free Reliability Durability Auto Restart after Power Failure Indoor Unit Quiet Operation Self Diagnosis D...

Page 22: ...f Timer Comfort Airflow Mode Night Set Mode 3 Step Airflow H P Only Worry Free Reliability Durability Auto Restart after Power Failure Comfort Control Auto Fan Speed Self Diagnosis Digital LED Display...

Page 23: ...de Night Set Mode 3 Step Airflow H P Only Worry Free Reliability Durability Auto Restart after Power Failure Comfort Control Auto Fan Speed Self Diagnosis Digital LED Display Indoor Unit Quiet Operati...

Page 24: ...SiENBE12 713 Specifications 13 Part 2 Specifications 1 Specifications 14 1 1 Indoor Units Cooling Only 14 1 2 Outdoor Units Cooling Only 23 1 3 Indoor Units Heat Pump 24 1 4 Outdoor Units Heat Pump 35...

Page 25: ...pes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D051079 3D051080 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FT...

Page 26: ...onnection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D051083 3D051084 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FTKS50D2V1W FTKS50D2V1L Rated Capacity 5...

Page 27: ...g Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D050947 3D050949 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FTKS35CAVMB FTKS50FV1B Rated Capacity...

Page 28: ...movable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 20 Power Consumption Rated W 40 45 Power Factor 96 6 97 8 Temperature Control Microcomputer Control Microco...

Page 29: ...xternal Static Pressure Pa 40 40 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm VP20 O D 2...

Page 30: ...t W 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 48 0 48 Power Consumption Rated W 71 71...

Page 31: ...d Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D050862 3D050864 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FLKS50BAVMB FLKS60BA...

Page 32: ...18 18 Operation Sound H M L SL dBA 38 32 26 23 39 33 27 24 Sound Power H dBA 54 55 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9...

Page 33: ...Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 195 960 680 195 960 680...

Page 34: ...L 0 10 Power Consumption W H 70 M 58 L 36 Starting Current A 6 2 Dimensions H W D mm 735 936 300 Packaged Dimensions H W D mm 797 992 390 Weight kg 57 Gross Weight kg 61 Operation Sound dBA 48 Sound...

Page 35: ...iquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D051101 3D051102 Model FTXG35EV1BW FTXG35EV1BS Cooling Heating Cooling Heating Rated Capacity 3 5k...

Page 36: ...ion Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 12 7 12 7 Drain mm 18 0 18 0 Drawing No 3D051105 3D051106 Model FTXS20D3VMW FTXS20D3VML Cooling Heati...

Page 37: ...ping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D051087 3D051088 Model FTXS35D3VMW FTXS35D3VML Cooling Heating Cooling Heating Rated Capacity 3 5kW Class 3 5kW Class Fr...

Page 38: ...ing Connection Liquid mm 6 4 6 4 Gas mm 12 7 15 9 Drain mm 18 0 18 0 Drawing No 3D051814 3D051815 Model FTXS20CAVMB FTXS25CAVMB Cooling Heating Cooling Heating Rated Capacity 2 5kW Class 2 5kW Class F...

Page 39: ...s Front Panel Color White White Air Flow Rates m min cfm H 14 7 519 16 1 569 16 2 572 17 4 614 M 12 4 438 13 9 491 13 6 480 15 1 533 L 10 3 364 11 5 406 11 4 403 12 7 448 SL 9 5 335 10 2 360 10 2 360...

Page 40: ...ontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 20 0 27 Power Consumption Rated W 45 60 Power Factor 97 8 96 6 Temperature Control Microcomputer Control Dimensions...

Page 41: ...9 35 33 31 29 35 33 31 29 External Static Pressure Pa 40 40 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm VP20 O D 26...

Page 42: ...pe Sirocco Fan Sirocco Fan Motor Output W 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 4...

Page 43: ...Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D050866 3D050868 Model FLXS50BAVMB FLXS60BAVMB Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 6 0kW...

Page 44: ...t kg 18 18 Operation Sound H M L SL dBA 38 32 26 23 38 32 26 23 39 33 27 24 39 33 27 24 Sound Power H dBA 54 54 55 55 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connect...

Page 45: ...ontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Temperature Control Microcomputer Control Microcomputer Control Microcomputer...

Page 46: ...14 L 0 03 Power Consumption W H 70 M 58 L 36 H 55 M 48 L 10 Starting Current A 6 2 Dimensions H W D mm 735 936 300 Packaged Dimensions H W D mm 797 992 390 Weight kg 58 Gross Weight kg 63 Operation S...

Page 47: ...Specifications SiENBE12 713 36 Specifications...

Page 48: ...Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 38 1 1 Wall Mounted Type 38 1 2 Duct Connected Type 47 1 3 Floor Ceiling Suspended Dual Type 49 1 4 Floo...

Page 49: ...control HA 4 S26 Connector for display PCB 5 S28 Connector for signal receiver PCB 6 S32 Connector for heat exchanger thermistor 7 S35 Connector for INTELLIGENT EYE sensor PCB 1 S29 Connector for cont...

Page 50: ...inted Circuit Board Connector Wiring Diagram 39 PCB Detail PCB 1 Control PCB PCB 4 INTELLIGENT EYE sensor PCB V1 S1 FU1 S6 S26 S28 S32 JC JB JA LED A S35 S21 R4288 PCB 2 Signal Receiver PCB PCB 3 Disp...

Page 51: ...lized control to 5 rooms 5 S26 Connector for signal receiver PCB 6 S27 Connector for control PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for INTELLIGENT EYE Sensor PCB 1 S36 Conn...

Page 52: ...ector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 41 PCB JP21 JB JA JC 5V GND 12V R2413 SW7 PCB 1 Control S1 5V Check S27 S7 S6 S26 S32 JA S35 S21 V1 JB JC GND 12V Check PCB 2 Signal...

Page 53: ...ircuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB PCB 2 Signal Receiver PCB PCB 3 INTELLIGENT EYE sensor PCB Control PCB V1 Fu1 S1 SW7 LED1 LED2 LED3 RTH1 S27 S7 12V Check S6 GND S26...

Page 54: ...A 5 S26 Connector for buzzer PCB 6 S28 Connector for signal receiver PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for Intelligent Eye sensor PCB 1 S29 Connector for control PCB 1...

Page 55: ...Connector Wiring Diagram PCB Detail PCB 1 Control PCB indoor unit PCB 2 Signal Receiver PCB PCB 3 Buzzer PCB PCB 4 Display PCB PCB 5 Intelligent Eye sensor PCB S1 V1 FU1 S6 S8 S26 R2860 S28 S32 JC JB...

Page 56: ...and control PCB 5 S41 Connector for swing motor 6 S46 Connector for signal receiver PCB 7 S49 Connector for reduction motor front panel mechanism 8 S51 Connector for front panel limit switch 1 S47 Co...

Page 57: ...713 46 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB indoor unit PCB 2 Signal Receiver PCB PCB 3 INTELLIGENT EYE sensor PCB S46 V1 S21 R4991 FU1 S1 S41 S51 JB JA JC S49 S...

Page 58: ...to 5 rooms 4 S26 Connector for display PCB 5 S32 Connector for heat exchanger thermistor 1 S1 Connector for control PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor...

Page 59: ...Printed Circuit Board Connector Wiring Diagram SiENBE12 713 48 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 2 Display PCB C1 C3 C2 WLU PbF 2P084375...

Page 60: ...ctor for display PCB 5 S26 Connector for signal receiver PCB 6 S32 Connector for heat exchanger thermistor 7 S37 Connector for power supply PCB 1 S36 Connector for control PCB 1 S25 Connector for cont...

Page 61: ...Printed Circuit Board Connector Wiring Diagram SiENBE12 713 50 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB PCB Detail PCB 2 Power Supply PCB...

Page 62: ...d Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 51 PCB 3 Display PCB PCB 4 Signal Receiver PCB SW1 S27 PbF PHOTO 2P084377 1 SW1 I RTH WLU 3 C1 C2 C3 EX511 REV 1...

Page 63: ...r service PCB 4 S41 Connector for lower air outlet motor 5 S42 Connector for swing motor 6 S46 Connector for display PCB 7 S48 Connector for sensor PCB 1 S27 Connector for control PCB 1 S47 Connector...

Page 64: ...gram Printed Circuit Board Connector Wiring Diagram 53 PCB Detail PCB 1 Sensor PCB PCB 2 Control PCB PCB 3 Service PCB PCB 3 Display PCB S49 3P191450 S1 LED A S21 S41 S42 S26 S46 S48 JC JA JB V1 FU1 2...

Page 65: ...1 6 X19A Connector for Room Temperature Thermistor 7 X20A X26A Connector for Fan Motor 8 X24A Connector for Infrared Remote Control Receiver Unit 9 X25A Connector for Drain Pump Motor Optional Access...

Page 66: ...onnector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 55 PCB Detail Capacity setting adaptor X18A X40A X15A X19A X17A X14A X61A X33A X27A X20A X35A X60A X5A X24A X26A X29A X25A HAP Se...

Page 67: ...sion valve coil D port yellow 7 S40 Connector for overload protector 8 S51 S101 Connector for service monitor PCB 9 S70 Connector for fan motor 10 S80 Connector for four way valve coil 11 S90 Connecto...

Page 68: ...Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 57 PCB Detail PCB 1 Main PCB V3 AC1 FU2 3 15A V100 HR1 HR2 FU3 3 15A 2P194316 S40 S20 S70 S90 S93 S92 S23 S21 S22 S10 AC2...

Page 69: ...Printed Circuit Board Connector Wiring Diagram SiENBE12 713 58 Printed Circuit Board Connector Wiring Diagram PCB 2 Service Monitor PCB...

Page 70: ...on 73 1 12 Inverter POWERFUL Operation 74 1 13 Other Functions 75 2 Function of Main Structural Parts 77 2 1 Main Structural Parts 77 2 2 Function of Thermistor 78 3 Control Specification 82 3 1 Mode...

Page 71: ...lains 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 powe...

Page 72: ...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...

Page 73: ...and fan 3 D Airflow FTXG25 35E CTXG50E FTK X S50 71F Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for...

Page 74: ...olled not to blow the air directly on the person in the room The airflow rate is controlled automatically within the following steps Cooling L tap MH tap same as AUTOMATIC Heating ML tap M tap The lat...

Page 75: ...area Control Flow Timing Chart 1 Opening the front panel fully Start Running 2 Output of the DD signal after the front panel starts moving 4 Making the fan rotate when the flap passes over the fan ba...

Page 76: ...e fan keeps rotating at the set tap Heating The fan stops Automatic Air Flow Control for Heating On heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperatu...

Page 77: ...e room temperature at startup and the temperature 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 t...

Page 78: ...C 2 Main unit setting temperature equals remote control setting temperature 3 Operation ON OFF point and mode switching point are as follows 1 Heating Cooling switching point Room temperature Main uni...

Page 79: ...itoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry Wall Mounted Type Floor standing Type Floor Ceiling suspended Type Duct...

Page 80: ...ng conditions and also conserves electricity Cooling Operation In case of FTXG25 35E CTXG50E FTK X S20 50D FVXS25 50F the temperature rises once Heating Operation 0 5 C 0 5 C 1 hour 30 minutes Operati...

Page 81: ...nfrared remote control by pushing the ECONO button When this function is ON the maximum capacity is also down Approx 20 This function can only be set when the unit is running Pressing the operation st...

Page 82: ...g 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 shifted 2 C from the set temperature Cooling 2 C hi...

Page 83: ...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 temperat...

Page 84: ...is reset and this function 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 displ...

Page 85: ...K X S20 50D Ex Powerful operation in cooling mode Refer to Fan Speed control on page 65 for detail Operation mode Fan speed Target set temperature COOL H tap 50 rpm 18 C DRY Dry rotating speed 50 rpm...

Page 86: ...when the remote control is missing or if its battery has run out Every press of the button switches from ON to OFF or from OFF to ON In case of FTK X S20 50D Push this button once to start operation P...

Page 87: ...bining 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 deactiv...

Page 88: ...Main Structural Parts 2 1 Main Structural Parts Heat Pump Model Cooling Only Model Note Expansion Valve In Case of 2 port model EVA B 3 port model EVA C 4 port model EVA D Four way valve Compressor EV...

Page 89: ...arge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected B Discharge Pipe Thermistor 1 The discharge pipe thermistor is u...

Page 90: ...omes lower than the indoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected The indoor heat exchanger thermistors are also used for preventing abnormal high pressure...

Page 91: ...pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected B Discharge Pipe Thermistor 1 The discharge pipe thermistor is used...

Page 92: ...eezing During the cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation halts 3 The indoor heat exchanger thermistors are used for anti icing c...

Page 93: ...peration Determine Operating Mode Judge the operating mode command set by each room in accordance with the instructing procedure and determine the operating mode of the system The following procedure...

Page 94: ...a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipes Low Hz high pressure peak cutting freeze up...

Page 95: ...g room the room in which the thermostat is set to ON Q value Indoor unit output determined from indoor unit volume air flow rate and other factors PI Control Determine Frequency Up Down by D Signal 1...

Page 96: ...ontrol The frequency upper and lower limits are set depending on the total of S values of a room When low noise commands come from the indoor unit more than one room or when outdoor unit low noise or...

Page 97: ...OFF when the heating is stopped the delay switch of the four way valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 150 sec after unit...

Page 98: ...st be set as follows The function must not be used when defrosting only for heat pump model Note When the compressor doesn t run for long time in the condition that the discharge pipe temperature is 1...

Page 99: ...the frequency will be 2 Hz drooping Repeating the above drooping continues until the current rushes on the drooping zone without change In the unchanged zone the frequency limit will remain In the re...

Page 100: ...orm the indoor unit allow the operating frequency limitation and prevent abnormal high pressure The signal from the indoor unit must be divided as follows Detail Conditions for Start Controlling Judge...

Page 101: ...C On heating the fan tap changes L M when the outdoor air temperature is 15 C with min Hz and M H at 4 C Tap Control in Indoor Unit Silent Operation 1 When Cooling Operation When the outdoor air temp...

Page 102: ...e target heat exchanger temperature as the canceling condition is selected in the range of 4 C Te 12 C according to the air temperature as the following formula The target heat exchanger temperature 4...

Page 103: ...ribution control in heating Open Control 1 Electronic expansion valve control when starting operation 2 Control when frequency changed 3 Control for defrosting only for heat pump model 4 Oil recover c...

Page 104: ...re equalizing control Gas pipe isothermal control SC control only for heat pump model Control when frequency changed Control for abnormally high discharge pipe temperature Liquid pipe temperature cont...

Page 105: ...becomes identical When the gas pipe temperature the average gas pipe temperature open the electronic expansion valve in that room When the gas pipe temperature the average gas pipe temperature close t...

Page 106: ...pe temperature control is active if the target frequency is changed for a specified value in a certain time period cancel the target discharge pipe temperature control and change the opening of the ta...

Page 107: ...nsufficient Gas Control Outline If a power consumption is below the specified value in which the frequency is higher than the specified frequency it must be regarded as gas insufficient In addition to...

Page 108: ...ng conditions 1 The indoor unit is not abnormal but the indoor unit which is not in the freezing prohibiting zone is present in more than 1 room 1 The indoor unit is not abnormal The indoor unit which...

Page 109: ...indoor unit is in trouble if a trouble occurs during the wiring error checking Emergency stop Any of the LED indicators 1 4 stays on Note 1 After self correction completed LED 3 and LED 4 are not dis...

Page 110: ...rced operation is over LED1 Room A wiring LED2 Room B wiring 1st flashing LED Port A piping 2nd flashing LED Port B piping The first stay on LED means the room that is connected with Port A The next s...

Page 111: ...tting is made AND Powerful signal from the priority room unit is received Note The operation mode of the priority room unit has precedence Cancellation of control The control function is canceled when...

Page 112: ...peration is also possible in COOL HEAT mode 3 15 4 ECONO mode proof Setting Outline When installing in hotels you can make ECONO mode ineffective on the outdoor unit Operation The ECONO mode can be sw...

Page 113: ...Control Specification SiENBE12 713 102 Function and Control...

Page 114: ...3 Operation Manual 103 Part 5 Operation Manual 1 System Configuration 104 1 1 Operation Instructions 104 2 Instruction 105 2 1 FTK X S FTXG CTXG FDK X S FLK X S Series 105 2 2 FVXS Series 181 2 3 FHQ...

Page 115: ...d to know a 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 Howe...

Page 116: ...ion 146 145 146 152 TIMER Operation H 154 154 154 154 Note for Multi System 156 156 156 156 Care Care and Cleaning 158 161 164 167 Trouble Shooting Trouble Shooting 177 177 177 177 Drawing No 3P194516...

Page 117: ...einstallation 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 le...

Page 118: ...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 pers...

Page 119: ...Instruction SiENBE12 713 108 System Configuration 2 1 3 Names of Parts FTK X S 20 25 35 50 D Indoor Unit ON OFF 16 14 13 15 12 1 3 4 5 7 9 10 11 8 6 2...

Page 120: ...Louvers vertical blades The louvers are inside of the air outlet 12 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it This switch is useful when the remote...

Page 121: ...DE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button OUTDOOR UNIT QUIET operation 9 FAN setting button It selects the air flow rate setting 10 SWING button Ajusting t...

Page 122: ...SiENBE12 713 Instruction System Configuration 111 Names of Parts FTK X S 20 25 35 C Indoor Unit...

Page 123: ...re inside of the air outlet 12 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it This switch is useful when the remote control is missing the operation mode...

Page 124: ...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 8 QUIET button OUTDOOR UNIT QUIET ope...

Page 125: ...Instruction SiENBE12 713 114 System Configuration Names of Parts FTK X S 50 60 71 F Indoor Unit 1 2 4 3 10 11 9 7 8 15 12 13 14 16 6 5...

Page 126: ...12 Operation lamp green 13 TIMER lamp yellow 14 HOME LEAVE lamp red Lights up when you use HOME LEAVE Operation 15 Indoor Unit ON OFF switch Push this switch once to start operation Push once again t...

Page 127: ...start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button OUTDOOR UNIT QUIET operation 9 FAN setting button It selects the...

Page 128: ...SiENBE12 713 Instruction System Configuration 117 Names of Parts FTXG 25 35 E CTXG 50 E Indoor Unit 15 14 18 12 13 17 1 3 4 6 2 11 16 5 7 8 9 10 With the panel closed...

Page 129: ...sh once again to stop it This switch is useful when the remote control is missing the operation mode refers to the following table 13 Room temperature sensor it senses the air temperature around the u...

Page 130: ...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 8 S...

Page 131: ...Instruction SiENBE12 713 120 System Configuration Names of Parts FDK X S 25 35 50 60 C FDK X S 25 35 E Indoor Unit 3 6 8 9 10 7 1 4 5 2...

Page 132: ...oom temperature sensor The louvers are inside of the air outlet 7 Operation lamp green 8 TIMER lamp Yellow 9 HOME LEAVE lamp red Lights up when you use HOME LEAVE operation 10 Indoor Unit ON OFF switc...

Page 133: ...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 8 QUIE...

Page 134: ...ceiling or to a wall The descriptions contained in this manual show the case when installation is being carried out to the ceiling The methodes of operation used are the same when installing to a wall...

Page 135: ...hen you use HOME LEAVE Operation 13 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it This switch is useful when the remote control is missing Push the swit...

Page 136: ...F 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 8 QUIET button OUTDOOR UNIT QUIET operation 9...

Page 137: ...place 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 r...

Page 138: ...the unit 2 Fix the holder to a wall a pillar etc with the screws supplied with the holder 3 Place the remote control in the remote control holder About remote control Never expose the remote control t...

Page 139: ...g to use the air conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditions Operation outside this humidity or temperature r...

Page 140: ...t a operation mode Each pressing of the button advances the mode setting in sequence AUTO DRY COOL HEAT FAN FDKS FTXS 2 Press ON OFF button The OPERATION lamp lights up To stop operation 3 Press ON OF...

Page 141: ...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 Dur...

Page 142: ...ition press SWING button once more The flaps will stop moving disappears from the LCD To adjust the vertical blades louvers Hold the knob and move the louvers You will find a knob on the left side and...

Page 143: ...ss COMFORT AIRFLOW button again The flaps will return to the memory position from before COMFORT AIRFLOW mode disappears from the LCD POWERFUL operation and COMFORT AIRFLOW operation cannot be used at...

Page 144: ...n adjust the air flow direction to increase your comfort 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 reach...

Page 145: ...eft side and the right side blades When SWING button is selected the flaps swinging range depends on the operation mode See the figure ATTENTION Always use a remote control to adjust the flaps angle I...

Page 146: ...play 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 flaps will stop moving disappears from the LCD To adjust the verti...

Page 147: ...nging range depends on the operation mode See the figure Three Dimensional 3 D Airflow Using three dimensional airflow circulates cold air which tends to collected at the bottom of the room and hot ai...

Page 148: ...ss SWING button once more The flaps will stop moving disappears from the LCD To adjust the vertical blades louvers 3 Press SWING button is displayed on the LCD 4 When the louvers have reached the desi...

Page 149: ...m the LCD When SWING button is selected the flaps swinging range depends on the operation mode See the figure Three Dimensional 3 D Airflow Using three dimensional airflow circulates cold air which te...

Page 150: ...ion to increase your comfort 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 pres...

Page 151: ...selected you should set the flap at a near horizontal angle in COOL or DRY mode to obtain the best performance In COOL or DRY mode if the flap is fixed at a downward position the flap automatically mo...

Page 152: ...tes on POWERFUL operation POWERFUL Operation cannot be used together with QUIET Operation Priority is given to the function of whichever button is pressed last POWERFUL Operation can only be set when...

Page 153: ...R UNIT QUIET operation If using a multi system this function will work only when the OUTDOOR UNIT QUIET operation is set on all operated indoor units However if using priority room setting see Note fo...

Page 154: ...the operation stop button causes the settings to be canceled and the disappears from the LCD ECONO operation is a function which enables efficient operation by limiting the power consumption of the o...

Page 155: ...e for HOME LEAVE operation When using HOME LEAVE operation for the first time please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate...

Page 156: ...tings please refer to the Before using HOME LEAVE operation section above HOME LEAVE operation is only available in COOL and HEAT mode Cannot be used in AUTO DRY and FAN mode HOME LEAVE operation runs...

Page 157: ...operation 1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD TEMP ON OFF POWERFUL MODE FAN SWING SILENT SENSOR E...

Page 158: ...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 INTELLIGENT EYE operatio...

Page 159: ...human movement To start INTELLIGENT EYE operation 1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD Back to norm...

Page 160: ...ion 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 passer...

Page 161: ...t To start INTELLIGENT EYE operation 1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD Back to normal operation...

Page 162: ...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 INTELLIGENT EYE operati...

Page 163: ...Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD 1 2 QUIET EX When somebody in the room Normal operation The INTE...

Page 164: ...o 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 INTELLIGENT EYE...

Page 165: ...utes Holding down either 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...

Page 166: ...tting by 10 minutes Holding down either button changes the setting rapidly 3 Press ON TIMER button again The TIMER lamp lights up To cancel ON TIMER operation 4 Press CANCEL button The TIMER lamp goes...

Page 167: ...GHT QUIET Mode requires initial programming during installation Please consult your retailer or dealer for assistance NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the night...

Page 168: ...ooms A B C and D are all operating If the unit in Room A enters POWERFUL operation operation capacity will be concentrated in Room A In such a case the cooling heating efficiency of the units in Rooms...

Page 169: ...e panel with water dry it with cloth dry it up in the shade after washing 4 Attach the front panel Set the 2 keys of the front panel into the slots and push them in all the way Close the front panel s...

Page 170: ...h neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium Apatite Photocatalytic Air Purifying Filter The Titani...

Page 171: ...smoothly out of the drain hose during COOL or DRY operation If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the service shop if this is the case Before...

Page 172: ...he panel 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...

Page 173: ...them with neutral 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 deodorizin fu...

Page 174: ...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 controller...

Page 175: ...in water Only neutral detergent may be used In case of washing the grille with water dry it with cloth dry it up in the shade after washing 4 Attach the front panel Align the rotation dowels on the l...

Page 176: ...m cleaner If the dust does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Tit...

Page 177: ...s MODE 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 Ta...

Page 178: ...liding the front panel to the left 3 Clean the front panel Wipe it with a soft cloth soaked in water Only neutral detergent may be used In case of washing the front panel dry it with cloth dry it up i...

Page 179: ...If the dust does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium Apa...

Page 180: ...peration 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 When a multi outdoor unit is...

Page 181: ...leaning the air filter Remove dust from the air filter using a vacuum cleaner and gently rinse them in cool water Do not use detergent or hot water to avoid filter shrinking or deformation After clean...

Page 182: ...d wastes energy The suction grille is option Do not use water or air of 50 C or higher for cleaning air filters and outside panels Check that the base stand and other fittings of the outdoor unit are...

Page 183: ...filter Remove dust from the air filter using a vacuum cleaner and gently rinse them in cool water Do not use detergent or hot water to avoid filter shrinking or deformation After cleaning dry them in...

Page 184: ...energy The suction grille is option Do not use water or air of 50 C or higher for cleaning air filters and outside panels Ask your DAIKIN dealer how to clean it Check that the base stand and other fi...

Page 185: ...it up in the shade after washing 3 Close the front panel Push the panel at the 5 points indicated by Operation without air filters may result in troubles as dust will accumulate inside the indoor uni...

Page 186: ...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 green Replace approximately once every 3 months 1 Detach the...

Page 187: ...heating operation is not used at the other room before you use the fan operation Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 m...

Page 188: ...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 m...

Page 189: ...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 air conditioner with the remote...

Page 190: ...e breaker cuts off the operation frequently A switch or a button often fails to work properly There is a burning smell Water leaks from the indoor unit Turn the breaker OFF and call the service shop A...

Page 191: ...C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR C9 FAULTY SUCTION AIR TEMPERATURE SENSOR OUTDOOR UNIT EA COOLING HEATING SWITCHING ERROR E5 OL STARTED E6 FAULTY COMPRESSOR START UP E7 DC FAN MOTOR FAULT E...

Page 192: ...ng properly the refrigerant may be leaking so call your dealer When carrying out repairs accompanying adding refrigerant check the content of the repairs with our service staff Do not attempt to insta...

Page 193: ...sult the dealer if relocation is necessary for moving or remodeling 2 2 2 Names of parts To avoid oxygen deficiency ventilate the room sufficiently if equipment with burner is used together with the a...

Page 194: ...n and turn the breaker OFF Do not touch the metal parts on the inside of the indoor unit as it may result in injury 1 2 6 5 2 4 7 8 3 9 12 10 11 13 14 Air outlet selection switch This setting blows ai...

Page 195: ...t operation Push once again to stop it The operation mode refers to the following table This switch is useful when the remote control is missing 12 Signal receiver It receives signals from the remote...

Page 196: ...tton It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button OUTDOOR UNIT QUIET operation 9 ECONO button ECONO operation page 16 10 SWING button Adjusting the Air Flow Direction page 12 11...

Page 197: ...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 f...

Page 198: ...CK button blinks 4 Press SELECT button to set the clock to the present time Holding down or button rapidly increases or decreases the time display 5 Press CLOCK button Always point the remote control...

Page 199: ...tions Operation outside this humidity or temperature range may cause a safety device to disable the system Recommended temperature setting For cooling 26 C 28 C For heating 20 C 24 C Mode Initial sett...

Page 200: ...e Each pressing of the button advances the mode setting in sequence AUTO DRY COOL HEAT FAN Cooling only model Heat pump model 2 Press ON OFF button The OPERATION lamp lights up To stop operation 3 Pre...

Page 201: ...fore 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 Duri...

Page 202: ...ore The flaps will stop moving disappears from the LCD To adjust the vertical blades louvres Hold the knob and move the louver You will find a knob on the left side and the right side blades Unless SW...

Page 203: ...ituation Do not try to adjust the flap by hand When adjusting by hand the mechanism may not operate properly or condensation may drip from air outlets Operating mode Situation Blowing pattern COOL mod...

Page 204: ...LCD Notes on POWERFUL operation POWERFUL Operation cannot be used together with ECONO or QUIET Operation Priority is given to the function of whichever button is pressed last POWERFUL Operation can on...

Page 205: ...te on OUTDOOR UNIT QUIET operation If using a multi system this function will work only when the OUTDOOR UNIT QUIET operation is set on all operated indoor units However if using priority room setting...

Page 206: ...he unit is running Pressing the operation stop button causes the settings to be canceled and the disappears from the LCD ECONO operation is a function which enables efficient operation by limiting the...

Page 207: ...etting by 10 minutes Holding down either 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 la...

Page 208: ...the time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press ON TIMER button again The TIMER lamp lights up To cancel ON TIMER operation 4 Press CANCEL button The TIM...

Page 209: ...be made per day 2 Press SELECT button to select the desired day of the week and reservation number Pressing the SELECT button changes the reservation number and the day of the week 3 Press NEXT butto...

Page 210: ...to the time setting press BACK button The set temperature is only displayed when the mode setting is on 9 Press NEXT button The temperature will be set The temperature will be set and go to the next...

Page 211: ...ccording to the procedures Only the time and set temperature set with the weekly timer are sent with the button Set the weekly timer only after setting the operation mode the fan strength and the fan...

Page 212: ...n confirmation complete Canceling all reservations 4 Hold the WEEKLY button for 5 seconds Be sure to direct the remote control toward the main unit and check for a receiving tone This operation is not...

Page 213: ...week 5 Press COPY button The reservation will be copied to the selected day of the week The whole reservation of the selected day of the week will be copied The reservation can be copied to another da...

Page 214: ...GHT QUIET Mode requires initial programming during installation Please consult your retailer or dealer for assistance NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the night...

Page 215: ...and D are all operating If the unit in Room A enters POWERFUL operation operation capacity will be concentrated in Room A In such a case the cooling heating efficiency of the units in Rooms B C and D...

Page 216: ...h water dry it with cloth dry it up in the shade after washing 4 Attach the front panel Insert the front panel into the grooves of the unit 3 places Attach the string to the right inner side of the fr...

Page 217: ...off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Titanium Apatite Photocatalytic Air Pu...

Page 218: ...smoothly out of the drain hose during COOL or DRY operation If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the service shop if this is the case Before a...

Page 219: ...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 m...

Page 220: ...and confirm that the lamps flash Moreover when the operation mode is in AUTO set all indoor unit operation modes to COOL or HEAT for a moment and check again that the lamps are normal If the lamps sto...

Page 221: ...ge breaker cuts off the operation frequently A switch or a button often fails to work properly There is a burning smell Water leaks from the indoor unit Turn the breaker OFF and call the service shop...

Page 222: ...T EXCHANGER TEMPERATURE SENSOR C9 FAULTY SUCTION AIR TEMPERATURE SENSOR OUTDOOR UNIT EA COOLING HEATING SWITCHING ERROR E1 CIRCUIT BOARD FAULT E5 OL STARTED E6 FAULTY COMPRESSOR START UP E7 DC FAN MOT...

Page 223: ...truction SiENBE12 713 212 System Configuration 2 3 FHQ Series 1 1 3 4 2 C hr H 5 12 4 2 1 3 9 11 10 21 14 16 15 17 18 22 8 6 7 20 19 g e e f a k i h b d f e c j d d k C hr hr TEST TEST NOT AVAILABLE L...

Page 224: ...emote control controls up to 16 indoor units All indoor units are equally set Two remote controls control system Two remote controls control one indoor unit In case of group control sytem one group of...

Page 225: ...ncy accident may happen For installation of separately sold component parts ask a specialist Be sure to use the separately sold component parts designated by our company Incomplete installation perfor...

Page 226: ...le voltage fluctuations such as a factory or plant e Vehicles and vessels f Where there is much spray of oil and vapor such as a cookery etc g Where there are machines generating electromagnetic waves...

Page 227: ...LAMP RED The lamp lights up during operation DISPLAY UNDER CENTRALIZED CONTROL When this display shows the system is UNDER CENTRALIZED CONTROL DISPLAY VENTILATION AIR CLEANING This display shows that...

Page 228: ...tdoor unit increase heating effect decreases and the system goes into DEFROST OPERATION The indoor unit fan stops and the remot control display shows After 6 to 8 minutes maximum 10 minutes of DEFROST...

Page 229: ...ction as following The AIR FLOW FLAP display swings as shown left and the air flow direction continuously varies Automatic swing setting Press AIR FLOW DIRECTION ADJUST button to select the air direct...

Page 230: ...will start After the timer is programmed the display shows the remaining time Press the TIMER ON OFF button once again to cancel programming the display vanishes Observe the following precautions to...

Page 231: ...ge the air filter Air filter for exchange is optional 1 Open the suction grille Slide both knobs simultaneously as shown and then pull them downward Follow the same procedure for closing Refer to Fig...

Page 232: ...en wire somewhere Contact your dealer if there are any problems Clean the air filter and outside panels After cleaning the air filter make sure to attach it Turn on the main power supply switch The di...

Page 233: ...mperature reaches the set temperature in heating mode the power supply from the outdoor unit is stopped and the indoor unit will operate on the low fan setting If using the multi system the fan will a...

Page 234: ...ly after the power supply recovers Check if the fuse has blown or breaker has worked Change the fuse or set the breaker 2 If the system stops operating after operating the system Check if the air inle...

Page 235: ...Instruction SiENBE12 713 224 System Configuration...

Page 236: ...cified Voltage between Indoor and Outdoor Units 246 5 10 Freeze up Protection Control 247 5 11 Outdoor Unit PCB Abnormality 249 5 12 OL Activation Compressor Overload 250 5 13 Compressor Lock 251 5 14...

Page 237: ...case conduct the diagnostic procedure described in the following pages Location of Operation Lamp In case of In case of FTK X S 20 25 35 50 D Series FTK X S 20 25 35 C Series In case of FTK X S 50 60...

Page 238: ...if the operation lamp is normal If the lamp stops blinking after the above steps there is no malfunction HOperation stops and operation lamp blinks only for indoor unit which the different operation...

Page 239: ...ication 234 Diagnosis with outdoor unit LED indication 235 Some indoor units do not operate Check the type of the indoor units Check to make sure that the indoor unit type is compatible with the outdo...

Page 240: ...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 fo...

Page 241: ...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 it...

Page 242: ...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 p...

Page 243: ...oth 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...

Page 244: ...hermistor abnormality C7 Front panel open close fault C9 Room temperature thermistor abnormality Outdoor Unit A5 Freeze up protection control E1 Outdoor unit PCB abnormality E5 OL activation compresso...

Page 245: ...r unit PCB abnormality 236 A5 Freeze up protection control or high pressure control heat pump model only 237 A6 Fan motor or related abnormality AC motor Wall 20 35 C series Duct Floor Ceiling 239 DC...

Page 246: ...Unspecified voltage between indoor and outdoor units 275 UH Anti icing function in other rooms 275 5 3 3 4 4 U0 Insufficient gas 271 5 4 3 3 4 U2 Low voltage detection or over voltage detection 273 5...

Page 247: ...r connection Troubleshooting Note Connector Nos vary depending on models Control connector Connector connection check note YES Is it normal NO Correct connections Replace PCBs R1400 Caution Be sure to...

Page 248: ...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 indo...

Page 249: ...anger thermistor check Check the intake air filter Check the air passage YES YES R4695 Check the dust accumulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty...

Page 250: ...of the fan motor Detection error due to faulty control PCB Troubleshooting Check No 16 Refer to P 285 Rotate the fan by hand Check No 16 Check Hall IC Operate the fan Does it rotate NO Does it rotate...

Page 251: ...nditions When the detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Supposed Causes Operation halt due to...

Page 252: ...1 Check output of fan motor connector Is motor power voltage DC 200V generated Is motor control power voltage DC 15V generated Turn off power supply and disconnect fan motor connector then turn power...

Page 253: ...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 06 Re...

Page 254: ...he breaker off 2 Remove the decorative plate 3 Remove the slot in panel 4 Put the plug in or turn the breaker on Wait until the initialization finishes 5 Operate the unit by the indoor unit ON OFF swi...

Page 255: ...hen the data sent from the outdoor unit cannot be received normally or when the content of the data is abnormal Supposed Causes Faulty outdoor unit PCB Faulty indoor unit PCB Indoor unit outdoor unit...

Page 256: ...l PCB Locate the cause of the disturbance of the power supply waveform and correct it Is there any wiring error NO R6471 Is LED A flashing Is the voltage 0 V NO Check No 10 Check power supply waveform...

Page 257: ...rong models interconnected Wrong indoor unit PCB mounted Indoor unit PCB defective Wrong outdoor unit PCB mounted or defective Troubleshooting Check the indoor and outdoor unit model numbers Match the...

Page 258: ...the cooling mode the following conditions A and B are kept together for 5 minutes A Indoor unit heat exchanger temperature 1 C B Indoor unit heat exchanger temperature Room temperature 10 C If the fr...

Page 259: ...changer thermistor Do the vacuum drying Replace the indoor unit PCB and then start the wiring error check mode R4715 Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 260: ...r is in abnormal running order Supposed Causes Out of control of microcomputer caused by external factors Noise Momentary fall of voltage Momentary power loss Defective outdoor unit PCB Troubleshootin...

Page 261: ...valve defective Troubleshooting Check No 04 Refer to P 277 Check No 05 Refer to P 278 Check No 06 Refer to P 279 Check No 11 Refer to P 282 Insert the thermistor in position Replace the discharge pipe...

Page 262: ...about 5 minutes normal Supposed Causes Compressor locked Troubleshooting Turn off the power Disconnect the harnesses U V and W Inverter checker Part No 1225477 Correct the power supply or replace the...

Page 263: ...ition Continuous run 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 Trou...

Page 264: ...ons The following condition continues for 2 5 seconds Input current 20A typical value The compressor halts if the error occurs and restarts automatically after 3 minutes stand by Supposed Causes Over...

Page 265: ...above its stop level NO YES Normal NO YES Any LED off YES NO Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and get restarted Turn off the powe...

Page 266: ...osed Causes Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective heat exchanger or outdoor temperature thermistor defective Outdoor unit PCB defective Water mixed in...

Page 267: ...erature being 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 Th...

Page 268: ...r 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 th...

Page 269: ...C voltage which is detected before the compressor startup Fault condition is identified by compressor current which is detected right after the compressor startup Malfunction Decision Conditions The d...

Page 270: ...een all each terminal 10 or less NO YES Turn off the power Reactor check Compressor check Reactor connection check Compressor connection check Disconnect the reactor from the outdoor unit PCB and meas...

Page 271: ...sor relay cable disconnected Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 283 Replace the outdoor...

Page 272: ...rrent Malfunction Decision Conditions The compressor running frequency is below 55 Hz and the CT input is below 0 1 V The input current is also below 0 5 A If this error repeats 4 times the system wil...

Page 273: ...witch before connect or disconnect connector or parts damage may be occurred Running current as shown at right with relay cable 1 or 2 YES Current guideline 2 sec Time Rising with increasing frequency...

Page 274: ...stor Malfunction Decision Conditions When the thermistor input is above 4 96 V or below 0 04 V with the power on the J3 error is judged if the discharge pipe thermistor temperature is smaller than the...

Page 275: ...e following thermistor Indoor unit heat exchanger thermistor Replace the outdoor unit PC board Replace the indoor unit PC board R4718 Caution Be sure to turn off power switch before connect or disconn...

Page 276: ...s detected by checking the radiation fin thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 100 C The error is cleared wh...

Page 277: ...to turn off power switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES NO Slightly dirty Check No 09 Check the outdoor unit fan o...

Page 278: ...ons The radiation fin temperature with the compressor on is above 103 C The error is cleared when the temperature drops below 95 C If a radiation fin temperature rise takes place 255 times successivel...

Page 279: ...transistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R5148 Caution Be sure to turn off power switch before connect or dis...

Page 280: ...while the compressor 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 16 times Clear...

Page 281: ...connected 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 break...

Page 282: ...s DC current 0 035 output frequency 0 5 Output frequency 55 Hz Gas shortage detection II The following conditions continue for 80 seconds Target opening of the electronic expansion valve 450 pulse Coo...

Page 283: ...it heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R5150 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be...

Page 284: ...or occurs 16 times Clearing condition Continuous run for about 60 minutes normal Supposed Causes Supply voltage not as specified Over voltage detector or DC voltage detection circuit defective PAM con...

Page 285: ...can not be received successively for 9 sec The abnormality is determined if the above fault conditions occurs once Fault counter is reset when the data from the PM1 can be successfully received Suppos...

Page 286: ...ion halt due to unspecified internal and or external voltages Operation halt due to mismatching of indoor and outdoor units Supposed Causes Operation halt due to the anti icing function in other rooms...

Page 287: ...sembly Check the continuity of the switch connection The shutter can be opened and closed with hand Keep the shutter open and closed all the way for each continuity check steps 7 6 5 4 3 2 1 Motor pow...

Page 288: ...the no operation unit Flow noise of refrigerant in the no operation unit Operation halt due to icing protection Heating The unit does not heat Refrigerant flow rate vary by unit Discharge air temperat...

Page 289: ...unit PCB Replace the four way valve coil Replace the four way valve R5153 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 1500 ohms NO S80...

Page 290: ...tors 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 Thermistor R25 C 20k B 3...

Page 291: ...nger Change the installation location or direction Check the outside air temperature temperature of air taken in by the outdoor unit The outside air temperature shall be 46 C or lower Check the allowa...

Page 292: ...op valve Replace the pipe installed at the site Clean Replace the compressor R1443 YES YES YES NO NO NO NO At the heat exchanger and air filter dirty Is the stop valve open Is the connection pipe defo...

Page 293: ...veform disturbance near the zero cross sections circled in Fig 2 6 1 10 Inverter Units Refrigerant System Check Check No 11 Fig 1 Fig 2 Refrigerant system check Check for gas leaks See the section on...

Page 294: ...ure the power transistor s supply voltage is below 50 V using the tester For the UVW make measurements at the Faston terminal on the board or the relay connector THERMISTOR LEAD WIRE GAS PIPE THERMIST...

Page 295: ...20 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...

Page 296: ...ns 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 faulty PCB Replace the PCB Failure of 2 faulty Hall IC Replace the fan motor Both 1 and 2 result Rep...

Page 297: ...Check SiENBE12 713 286 Service Diagnosis...

Page 298: ...of the Electrical Box 292 1 3 Removal of the PCB 300 1 4 Removal of the Propeller Fan Fan Motor 306 1 5 Removal of the Sound Blanket 308 1 6 Removal of Electronic Expansion Valve Coil Four Way Valve...

Page 299: ...after turning off all power supplies before disassembling work Step Procedure Points 1 External appearance Take care not to cut your finger by the fins of the heat exchanger 2 Loosen the 4 screws 2 on...

Page 300: ...sen the 2 screws each 1 in front and back of the clamp plate 5 Slide the clamp plate to the left to undo the hooks and remove the plate 6 Undo the upper 2 hooks to remove the front panel Align the pos...

Page 301: ...3 290 Removal Procedure 7 Lift the front panel up to remove the left side hooks and open the panel 8 The front panel has the 3 hooks on the left 9 The front panel has the 1 hook on the right Step Proc...

Page 302: ...ocedure 291 10 Loosen the 4 screws of the discharge grille 11 Loosen the 2 screws of the stop valve cover And then slide the cover downward to remove When assembling make sure to catch the 5 hooks Ste...

Page 303: ...models have 4 ports 1 Inside structure 2 Disconnect the connecting wires Connecting wires of the A B C D port 1 Black Power supply 2 White Power supply 3 Red Transmission Power Supply wires L Black N...

Page 304: ...1 Detach the fixing tape for the electrical box cover 2 Undo the 4 hooks at the mark of the drip proof cover 3 Lift the cover up to remove 4 Disconnect the connector for fan motor S70 from the PCB Th...

Page 305: ...ent of the wire harness for fan motor 6 Disconnect the connectors for electronic expansion valve coil S20 White S21 Red S22 Blue S23 Yellow The number of the connectors are different according to the...

Page 306: ...e the OL wire harness and the compressor wire harness together from the partition plate 10 Use long nose pliers or the like to pull out the clamp Detach the clamp Just pull the push mount type out of...

Page 307: ...emoval Procedure 12 Disconnect the each connector S90 Outdoor air heat exchanger discharge pipe thermistor S92 Gas pipe thermistor S93 Liquid pipe thermistor 13 Disconnect the connector for four way v...

Page 308: ...he thermistor lead wire 3 Remove the electrical box 1 Loosen the 2 screws of the earth terminal 4 Disconnect the power supply connecting wires Illustrations are for 3 room model 1 Loosen the screws on...

Page 309: ...Outdoor Unit SiENBE12 713 298 Removal Procedure 2 Detach the outdoor air thermistor 3 Loosen the screw on the right side of the electrical box Step Procedure Points Wiring fixture...

Page 310: ...SiENBE12 713 Outdoor Unit Removal Procedure 299 4 Loosen the 1 screw in front of the electrical box 5 Lift up the electrical box to remove Step Procedure Points...

Page 311: ...Points 1 Remove the service PCB Illustrations are for 3 room model 1 External appearance of the service PCB and the terminal board 2 Loosen the 1 screw of the terminal board and open it 3 Disconnect t...

Page 312: ...01 4 Widen the upper hook and pull the service PCB upward to remove 2 Remove the control PCB 1 Disconnect the each connectors on the terminal board 2 Disconnect the 2 connectors for reactor 3 Loosen t...

Page 313: ...rom the hook 6 Lift up the control PCB to remove In working be careful not to break the control PCB with the excessive force because the PCB and the radiation fin are adhered to one another When assem...

Page 314: ...See page 56 for detail 9 Loosen the 2 screws of the radiation fin 10 Loosen the 3 screws of the reactor and the 1 screw of the clamp Step Procedure Points Fuse FU3 3 15A 250V S70 S40 S20 S21 S22 S80...

Page 315: ...it SiENBE12 713 304 Removal Procedure 3 Disconnect the wire harnesses 4 Remove the terminal board Illustrations are for 3 room model 1 Open the electrical box and remove the terminal board Step Proced...

Page 316: ...SiENBE12 713 Outdoor Unit Removal Procedure 305 Step Procedure Points...

Page 317: ...tep Procedure Points 1 Remove the fan motor fixing plate Remove the outer panels and plates Remove the electrical box 2 Take out the fan motor fixing plate toward yourself When assembling fit the lowe...

Page 318: ...of the lead wire Loosen the 4 screws of the fan motor When assembling put the lead wire through the back of the motor so as not to be entangled with the propeller fan 5 Detach the 4 screws and 4 rubbe...

Page 319: ...ore after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel Remove the outer panels and plates Remove the electrical box 1 Loosen the 3 screw...

Page 320: ...Pull up the right side panel 5 Loosen the 2 screws of the wiring fixture 2 Remove the partition plate 1 Loosen the 2 screws to remove the partition plate 2 Detach the clamp of the relay harness for th...

Page 321: ...the lower hook of the partition plate 3 Remove the sound blanket Illustrations are different depending on the models Since the piping ports on the sound blanket are torn easily remove the blanket care...

Page 322: ...NBE12 713 Outdoor Unit Removal Procedure 311 3 Undo the fixing strings open the sound blanket body and pull it out 4 Open the sound blanket inner and pull it out Step Procedure Points Sound blanket in...

Page 323: ...ning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the electronic expansion valve coil Illustrations are for 3 room m...

Page 324: ...the liquid pipe thermistor S90 Outdoor air thermistor Heat exchanger thermistor Discharge pipe thermistor S92 Gas pipe thermistor Room A Black Room B Gray Room C Brown Room D Red S93 Liquid pipe therm...

Page 325: ...loose the clip for the discharge pipe thermistor 1 Undo the clip and remove the discharge pipe thermistor 6 Remove the assembly of thermistor 1 The figure shows the arrangement of the assembly of the...

Page 326: ...ng Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas Caution Be careful not to get yourself burnt with the pipes and other parts that are h...

Page 327: ...ith wet cloth and provide water so that the cloth will not be dried and avoid excessive heating Keep below 120 C Be careful so as not to break the pipes by pressing it excessively by pliers when withd...

Page 328: ...name plate Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately Warning Ventilate when refrigerant leaks during t...

Page 329: ...s one nut fixing the compressor Remove the nut with an open end spanner Before working make sure that the refrigerant is empty in the circuit Be sure to apply nitrogen replacement when heating up the...

Page 330: ...SiENBE12 713 Others 319 Part 8 Others 1 Others 320 1 1 Test Run from the Remote Control 320 1 2 Jumper Settings 321...

Page 331: ...n and Testing 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 i...

Page 332: ...ed remote control 1 Slide the front cover and take it off 2 Cut the address jumper J4 1 2 2 Jumper Setting R4417 ADDRESS JA ADDRESS JA EXIST 1 CUT 2 ADDRESS J4 EXIST CUT 1 2 J4 R4418 Jumper On indoor...

Page 333: ...the angle Aim so that the sensor is pointing to the center of the room or to the part of the room that is most frequently used After adjusting the angle gently wipe the sensor with a clean cloth bein...

Page 334: ...SiENBE12 713 Appendix 323 Part 9 Appendix 1 Piping Diagrams 324 1 1 Indoor Units 324 1 2 Outdoor Units 330 2 Wiring Diagrams 331 2 1 Indoor Units 331 2 2 Outdoor Units 336...

Page 335: ...G 6 4CuT 6 4CuT 4D050757A 7 9CuT MAFFLER ASSY CROSS FLOW FAN FAN MOTOR INDOOR UNIT M 6 4CuT 7 0CuT 9 5CuT HEAT EXCHANGER REFRIGERANT FLOW COOLING 6 4CuT 6 4CuT FIELD PIPING 6 4CuT FIELD PIPING 12 7CuT...

Page 336: ...FAN FAN MOTOR M INDOOR UNIT REFRIGERANT FLOW HEATING COOLING 7 0CuT 7 0CuT 9 5CuT HEAT EXCHANGER 7 0CuT 7 0CuT THERMISTOR ON HEAT EXCH 4D045301B FIELD PIPING FIELD PIPING 12 7CuT 6 4CuT 7 0CuT CROSS F...

Page 337: ...IPING 6 4CuT FIELD PIPING 9 5CuT 7 9CuT CROSS FLOW FAN FAN MOTOR M INDOOR UNIT 7 0CuT 6 4CuT REFRIGERANT FLOW COOLING HEATING 9 5CuT HEAT EXCHANGER 6 4CuT 6 4CuT THERMISTOR ON HEAT EXCH 4D049319A FIEL...

Page 338: ...S25CVMB CDKS60CVMB CDXS50CVMA CDXS60CVMA CDXS60CVMB CDKS50CVMB CDXS50CVMB 12 7 9 5 FDKS25CVMB FDKS35CVMB FDXS25CAVMB FDXS35CAVMB FDKS25CAVMB FDKS35CAVMB FDKS25EAVMB FDKS35EAVMB FDXS50CVMB FDXS60CVMB F...

Page 339: ...IT 9 5CuT SIROCCO FAN 12 7CuT FAN MOTOR M HEAT EXCHANGER THERMISTOR ON HEAT EXCH 4D048724A FVXS25FV1B FVXS35FV1B FVXS50FV1B MUFFLER ASSY 6 4CuT 6 4CuT FIELD PIPING TURBO FAN FIELD PIPING HEAT EXCHANGE...

Page 340: ...FBQ60BVL FCQ50 60C7VEB FUQ71 100 125BUV1B FUQ71 100 125BVV1B FHQ71 100 125BUV1B FHQ71 100 125BVV1B FAQ71 100BUV1B FAQ71 100BVV1B FXUQ70 100 125MV1 FHQ71 100 125BAV3B FCQ71 100 125 140DV3B FCQ71 100 1...

Page 341: ...EVB COOLING 12 7CuT HEAT EXCHANGER M FILTER 9 5CuT HEADER HEATING 12 7CuT FILTER HEADER 6 4CuT 12 7CuT FILTER OUTDOOR UNIT 12 7CuT DC FAN MOTOR 12 7CuT GAS PIPE THERMISTOR DGA GAS PIPE THERMISTOR DGB...

Page 342: ...OTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN TRANSMISSION CIRCUIT SIGNAL RECEIVER INTELLIGENT EYE SENSOR INFRARED REMOTE CONTROL 3D051268...

Page 343: ...THEN BACK ON AGAIN TRANSMISSION CIRCUIT INFRARED REMOTE CONTROL INTELLIGENT EYE SENSOR SIGNAL RECEIVER TERMINAL FOR CENTRALIZED CONTROL 3D033599G PCB4 PCB3 PCB5 LED1 H1P R1T t S37 S38 LED2 H2P LED3 H...

Page 344: ...G F1U H2P H4P M1F M1S M2S M3S PCB1 PCB2 PCB3 R1T R2T S1 S51 S1W S2W X1M E1 E2 NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN TRANSMISSION...

Page 345: ...SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN TRANSMISSION CIRCUIT SIGNAL RECEIVER INFRARED REMOTE CONTROL 3D033909E M S1W outdoor FIELD WIRING F1U M M S2W 4 3 2 1 indoor 3 X1M 2 1 E3 S26 BLU S4W AIR OU...

Page 346: ...HT NOTE 6 t X33A T1R X17A t X11A CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD CONNECTER COLOUR FOR COMPONENTS CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS X35A HAP V1TR X24A NOTE 4 KAR X15A X14A X20A...

Page 347: ...N MOTOR L1R REACTOR Q1L OVERLOAD PROTECTOR PM1 POWER MODULE PCB1 2 PRINTED CIRCUIT BOARD SHEET METAL TERMINAL STRIP FIXED PLATE 3D055885 indoor outdoor FIELD WIRING 9 BLK BLU 1 N BLU S102 RED S20 RED...

Page 348: ...282 power transistor check 283 thermistor resistance check 279 turning speed pulse input on the outdoor unit PCB check 284 check No 01 276 check No 02 276 check No 03 276 check No 04 277 check No 05...

Page 349: ...37 247 frequency control 83 frequency principle 60 front panel 289 front panel control 64 front panel mechanism 45 243 front panel open close fault 243 FU1 38 40 43 45 47 49 52 56 FU2 56 FU3 56 functi...

Page 350: ...282 power transistor check 283 power airflow dual flaps 62 POWERFUL operation 141 193 POWERFUL operation mode 100 preheating operation 86 preparation before operation 126 186 pressure equalization con...

Page 351: ...0 95 314 gas pipe thermistor 78 80 313 heat exchanger thermistor 313 indoor heat exchanger thermistor 79 81 liquid pipe thermistor 79 313 outdoor air thermistor 313 outdoor heat exchanger thermistor 7...

Page 352: ...sion valve control 92 F fan motor connector output check 276 fan motor or related abnormality ac motor 239 DC motor 240 four way valve performance check 278 freeze up protection control 89 237 247 fre...

Page 353: ...s check 282 power transistor check 283 priority room setting 100 programme dry function 66 R radiation fin temperature rise 267 remote control 229 230 S sensor PCB 53 service monitor PCB 58 service PC...

Page 354: ...332 FTKS60FV1B 332 FTKS71FV1B 332 FTXG25EV1BW S 333 FTXG35EV1BW S 333 FTXS20CAVMB 332 FTXS20D3VMW L 331 FTXS25CAVMB 332 FTXS25D3VMW L 331 FTXS35CAVMB 332 FTXS35D3VMW L 331 FTXS50D2V1W L 331 FTXS50FV1B...

Page 355: ...ation 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 pres...

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