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Daikin Super Multi NX C-Series, Service Manual

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Daikin Super Multi NX C-Series Service Manual Download Page 258

SiE12-411

Outdoor Unit (50 / 52 / 58 / 68 / 75 Class)

Removal Procedure

247

7

The figure shows the 
control PCB.

"

Glass tube fuse 3A

2. Removing the service 

monitor PCB

1

The figure shows the 
service monitor PCB.

3. Removing the inverter 

PCB.

1

Remove the 7 screws 
of the inverter PCB.

Step

Procedure

Points

V

a

ri

s

tor

S

9

3

S

92

S

90

FU2

S8

0

S

2

3

S

22

S

21

S

20

S

40

S

6

S33

S

71

S3

1

LED A

Priority-room 

s

etting (

S

W4)

Wiring error check (

S

W

3

)

Forced oper

a

tion (

S

W1)

Night 

qu

iet mode (

S

W5)

Cooling / he

a

ting mode lock 

(

S

W2)

LED 1

LED 2

LED 

3

LED 4

F

us

e 

3

A

Summary of Contents for Super Multi NX C-Series

Page 1: ...SiE12 411 Service Manual C Series Applied Models Inverter Multi Cooling Only Inverter Multi Heat Pump...

Page 2: ...MKD58BVM 4MKD90BVMA 4MKS58BVMB 8 3MKD75BVM 4MKS75BVMB 4MKD75BVM 4MKS90BVMB 4MKD90BVM Heat Pump Indoor Unit FTXE25BVMA FTXS20CVMB 9 FLXS25BVMB FTXS25BVMA FTXE35BVMA FTXS25CVMB 9 8 FLXS35BVMB FTXS35BVMA...

Page 3: ...Standing Type 66 1 6 Outdoor Units 68 Part 4 Function and Control 69 1 Main Functions 70 1 1 Frequency Principle 70 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing 72 1 3 Fan Speed Con...

Page 4: ...and Cleaning 147 2 14 Troubleshooting 157 Part 6 Service Diagnosis 161 1 Caution for Diagnosis 162 1 1 Troubleshooting with the Operation Lamp 162 2 Problem Symptoms and Measures 164 3 Service Check F...

Page 5: ...Motor 230 1 6 Removal of Electronic Expansion Valve and Thermistor 232 1 7 Removal of Sound Insulation and Reactor 233 1 8 Removal of Shunt 235 1 9 Removal of Solenoid Valve and Four Way Valve 236 1...

Page 6: ...SiE12 411 Table of Contents v Index i Drawings Flow Charts v...

Page 7: ...SiE12 411 vi Table of Contents...

Page 8: ...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 equipme...

Page 9: ...e the welder in a well ventilated place Using the welder in an enclosed room can cause oxygen deficiency Warning Be sure to use parts listed in the service parts list of the applicable model and appro...

Page 10: ...s leaks be sure to locate the leak and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leak cannot be located and the repair wor...

Page 11: ...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...

Page 12: ...SiE12 411 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 8...

Page 13: ...bility Durability Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Tr...

Page 14: ...ty Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor...

Page 15: ...art after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exc...

Page 16: ...r Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Contr...

Page 17: ...ity Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Out...

Page 18: ...liability Durability Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion T...

Page 19: ...rability Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment o...

Page 20: ...Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H1 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Cont...

Page 21: ...ity Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Out...

Page 22: ...ty Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H1 H1 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outd...

Page 23: ...re Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H 3 D Airflow 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatment of Outdoor He...

Page 24: ...Reliability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display 3 Step Airflow H P Only Wiring Error Check Comfort Control Auto Fan Speed Anticorrosion Treatmen...

Page 25: ...art after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H H 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exc...

Page 26: ...Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H1 H1 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort...

Page 27: ...Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Control...

Page 28: ...SiE12 411 Specifications 17 Part 2 Specifications 1 Specifications 18 1 1 Indoor Units Cooling Only 18 1 2 Outdoor Units Cooling Only 30 1 3 Indoor Units Heat Pump 36 1 4 Outdoor Units Heat Pump 51...

Page 29: ...id and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 12 7 Drain mm 18 0 18 0 Drawing No 3D040693 3D040694 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min...

Page 30: ...wnward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 23 0 22 0 21 0 23 0 22 Power Consumption Rated W 50 Power Factor 98 8 98 8 99 2 98 8 98 8 Temperature Control Microcomputer...

Page 31: ...Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 12 7 Drain mm 18 0 18 0 Drawing No 3D040697 3D040698 Model FTKD50BVMA FTKD60BVMA Rated Capacity 5 0kW Class 6 0kW Class Front Panel Color Whit...

Page 32: ...wnward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 23 0 22 0 21 0 23 0 22 Power Consumption Rated W 50 Power Factor 98 8 98 8 99 2 98 8 98 8 Temperature Control Microcomputer...

Page 33: ...g Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D044242B 3D044243B Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FTKS35CVMB 9 8 FTKS50BVMB Rated Cap...

Page 34: ...ter Removable 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 96 4 Temperature Control Microcomputer Control M...

Page 35: ...M L SL dBA 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 12 7 Drain mm VP...

Page 36: ...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 12 7 Drain mm VP20 O D 26...

Page 37: ...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 I D 20 V...

Page 38: ...quid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 12 7 Drain mm 18 0 18 0 Drawing No 3D036717 3D036718 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FLK50AVMA FL...

Page 39: ...Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D040166A 3D040167A Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FLKS50BVMB FLKS60BVMB Rated Capacity...

Page 40: ...ht kg 19 19 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...

Page 41: ...tarting Current A 6 9 6 5 Dimensions H W D mm 735 936 300 735 936 300 Packaged Dimensions W D H mm 960 357 784 960 357 784 Weight kg 55 55 Gross Weight kg 59 59 Operation Sound dBA 46 46 Piping Connec...

Page 42: ...imensions H W D mm 735 936 300 735 936 300 Packaged Dimensions W D H mm 960 357 784 960 357 784 Weight kg 58 58 Gross Weight kg 62 62 Operation Sound dBA 48 48 Piping Connection Liquid mm 6 4 1 9 5 2...

Page 43: ...0 34 Power Consumption W H 60 L 41 Starting Current A 12 1 Dimensions H W D mm 908 900 320 Packaged Dimensions W D H mm 926 394 942 Weight kg 66 Gross Weight kg 77 Operation Sound dBA 48 Piping Connec...

Page 44: ...Dimensions H W D mm 735 936 300 908 900 320 Packaged Dimensions W D H mm 960 357 784 926 394 942 Weight kg 58 66 Gross Weight kg 62 77 Operation Sound dBA 48 48 Piping Connection Liquid mm 6 4 1 9 5...

Page 45: ...D mm 735 936 300 735 936 300 Packaged Dimensions W D H mm 960 357 784 960 357 784 Weight kg 55 55 Gross Weight kg 59 59 Operation Sound dBA 46 46 Sound Power dBA 59 59 Piping Connection Liquid mm 6 4...

Page 46: ...6 300 908 900 320 Packaged Dimensions W D H mm 960 357 784 926 394 942 Weight kg 58 66 Gross Weight kg 62 77 Operation Sound dBA 48 48 Sound Power dBA 61 61 Piping Connection Liquid mm 6 4 4 6 4 4 Gas...

Page 47: ...and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 12 7 Drain mm 18 0 18 0 Drawing No 3D040689 3D040690 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 3...

Page 48: ...Air Filter Removable Washable Mildew Proof Running Current Rated A 0 23 0 22 0 21 0 23 0 22 0 23 0 22 0 21 0 23 0 22 Power Consumption Rated W 50 50 Power Factor 98 8 98 8 99 2 98 8 98 8 98 8 98 8 99...

Page 49: ...Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D044245B 3D044246B Model FTXS35CVMB 9 8 FTXS50BVMB Cooling Heating Cooling Heating Rated Capacity 3 5kW Class 5 0kW Class Fr...

Page 50: ...ntal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 20 0 20 0 22 Power Consumption Rated W 40 45 45 50 Power Factor 96 6 97 8 96...

Page 51: ...g Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D044251B 3D044252B Model ATXS35CVMB 9 ATXS50CVMB Cooling Heating Cooling Heating Rated Capacity 3 5kW Class 5 0kW Class Fro...

Page 52: ...ion Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D046602 3D046603 Model FTXS50BVMA FTXS60BVMA Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 6 0kW Class Front Panel Colo...

Page 53: ...ntal and Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 21 0 21 Power Consumption Rated W 50 50 Power Factor 99 2 99 2 Temperature Control Microcomputer Control Dimensio...

Page 54: ...31 29 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 12 7 Drain mm VP20 O...

Page 55: ...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 I D 20 VP20...

Page 56: ...m 9 5 9 5 Drain mm VP20 O D 26 I D 20 VP20 O D 26 I D 20 Drawing No 3D046469 3D046470 Model CDXS50CVMA CDXS60CVMA Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 6 0kW Class Front Panel Col...

Page 57: ...id and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 12 7 Drain mm 18 0 18 0 Drawing No 3D036690 3D036691 Conversion Formulae kcal h kW 860 Btu h kW 3414 cfm m min 35 3 Model FLX50AVMA FLX6...

Page 58: ...tion Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D040174A 3D040175A Model FLXS50BVMB FLXS60BVMB Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 5 7kW Class Front Panel C...

Page 59: ...onnection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D046600 3D046601 Model FLXS50BVMA FLXS60BVMA Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 5 7kW Class Front Pane...

Page 60: ...Gross Weight kg 19 19 Operation Sound H M L SL dBA 38 32 26 23 38 32 26 23 39 33 27 24 39 34 29 26 Sound Power H dBA 54 55 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Co...

Page 61: ...eft Horizontal and Upward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 14 0 26 0 32 Power Consumption Rated W 32 32 55 70 Power Factor 99 4...

Page 62: ...Current A 10 1 10 2 Dimensions H W D mm 735 936 300 908 900 320 Packaged Dimensions W D H mm 960 357 784 926 394 942 Weight kg 59 73 Gross Weight kg 63 80 Operation Sound dBA 48 49 48 49 Piping Conne...

Page 63: ...D mm 735 936 300 735 936 300 Packaged Dimensions W D H mm 960 357 784 960 357 784 Weight kg 55 59 Gross Weight kg 59 63 Operation Sound dBA 46 47 48 49 Sound Power dBA 59 60 61 62 Piping Connection Li...

Page 64: ...tarting Current A 8 7 Dimensions H W D mm 908 900 320 Packaged Dimensions W D H mm 926 394 942 Weight kg 73 Gross Weight kg 80 Operation Sound dBA 48 49 Sound Power dBA 61 62 Piping Connection Liquid...

Page 65: ...936 300 Packaged Dimension W D H mm 990 400 784 Weight kg 55 Gross Weight kg 59 Operation Sound Sound Pressure dBA 46 47 Silent Mode dBA Sound Power dBA 59 60 Piping Connection Liquid mm 6 4 3 Gas mm...

Page 66: ...tarting Current A 8 7 Dimensions H W D mm 908 900 320 Packaged Dimensions W D H mm 926 388 1 025 Weight kg 73 Gross Weight kg 80 Operation Sound dBA 48 49 Sound Power dBA 61 62 Piping Connection Liqui...

Page 67: ...Specifications SiE12 411 56 Specifications...

Page 68: ...t Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 58 1 1 Wall Mounted Type 20 25 35 Class 58 1 2 Wall Mounted Type 50 60 71 Class 61 1 3 Duct Connected Type 63 1 4 Floo...

Page 69: ...fan motor 4 S21 Connector for centralized 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...

Page 70: ...ctor Wiring Diagram Printed Circuit Board Connector Wiring Diagram 59 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 3 Intelli...

Page 71: ...iring Diagram SiE12 411 60 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 3 Intelligent eye sensor PCB 2 Signal reciever Pb Free S27 S7 S6 S26 S32 GND 5V Check 12V Check S1 SW7 JA JB JC...

Page 72: ...buzzer PCB 6 S27 S29 S36 Connector for control PCB 7 S28 Connector for signal receiver PCB 8 S32 Connector for heat exchanger thermistor 9 S35 Connector for Intelligent Eye sensor PCB 10 S38 Connecto...

Page 73: ...onnector 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 J...

Page 74: ...ctor for control PCB 3 S7 Connector for fan motor 4 S21 Connector for centralized control to 5 rooms 5 S26 Connector for display PCB 6 S32 Connector for room temp Heat exchanger thermistor 1 V1 Varist...

Page 75: ...S36 Connector for control PCB 7 S26 Connector for signal receiver PCB 8 S31 Connector for room temperature thermistor 9 S32 Connector for heat exchanger thermistor 10 S37 Connector for power supply PC...

Page 76: ...iE12 411 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 65 Power Supply PCB PCB 2 Display PCB PCB 3 Signal Receiver PCB PCB 4 S36 Pb Free SW1 S31 Pb Free...

Page 77: ...utlet motor 2 S21 Connector for HA 3 S23 Connector for signal receiver 4 S31 S32 Connector for room temperature heat exchanger thermistor 5 S201 S203 S7 S24 S26 Connector for power supply PCB 1 6 S202...

Page 78: ...ng Diagram Printed Circuit Board Connector Wiring Diagram 67 Control PCB PCB 2 Display PCB PCB 3 Signal Receiver PCB PCB 4 S25 S302 S301 S23 S6 S21 PCB 2 S203 S32 S31 S7 V1 FU Pb Free LED 11 LED 12 S2...

Page 79: ...ve coil C port 4 S23 Connector for electronic expansion valve coil D port 5 S31 Connector for CN14 6 S32 Connector for CN11 7 S33 Connector for S34 8 S40 Connector for overload relay 9 S71 Connector f...

Page 80: ...Function of Main Structural Parts 83 2 1 Main Structural Parts 83 2 2 Function of Thermistor 84 3 Control Specification 88 3 1 Mode Hierarchy 88 3 2 Frequency Control 89 3 3 Controls at Mode Changing...

Page 81: ...ains 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...

Page 82: ...ir 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 p...

Page 83: ...table air distribution Auto Swing In case of Wall Mounted Type 50 60 71 Class The following table explains the auto swing process for heating cooling dry and fan Outline of 3 D Airflow Alternative rep...

Page 84: ...pm 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...

Page 85: ...et 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...

Page 86: ...setting 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 temperatu...

Page 87: ...or 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 Op...

Page 88: ...icrocomputer 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 Cooling 2 C higher Dry 1...

Page 89: ...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...

Page 90: ...es 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 controller The...

Page 91: ...s In case of Wall Mounted Type 50 60 71 Class Ex Powerful operation in cooling mode Operation mode Fan speed Target set temperature Cooling H tap 90 rpm 18 C Dry Dry rotating speed 50 rpm Normally tar...

Page 92: ...button 1 10 4 Photocatalytic Deodorizing Filter Photocatalytic Deodorizing Filter demonstrates powerful oxidation characteristics when subjected to harmless ultraviolet light Photocatalytic deodorizin...

Page 93: ...lity occur the LCD remote controller displays error code These indications allow prompt maintenance operations 1 10 9 Auto restart Function Even if a power failure including one for just a moment occu...

Page 94: ...wing compressor being operated by INV control Heat Pump Model Cooling Only Model Note 1 Expansion Valve In Case of 2MK X EVA B 3MK X EVA C 4MK X EVA D 2 Liquid pipe thermistor R410A Type only 2 Four w...

Page 95: ...rge piping is lower than the temperature of outdoor heat exchanger a disconnected discharge pipe thermistor can be detected B Discharge Pipe Thermistor DOT 1 Discharge pipe thermistor is used to contr...

Page 96: ...ndoor heat exchanger temperature a disconnected discharge pipe thermistor can be detected 5 An indoor heat exchanger thermistor is used for detecting incorrect wiring During the operation of checking...

Page 97: ...of the discharge piping is lower than the temperature of outdoor heat exchanger a disconnected discharge pipe thermistor can be detected B Discharge Pipe Thermistor DOT 1 Discharge pipe thermistor is...

Page 98: ...g the cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation must be halted 3 An indoor heat exchanger thermistor is used for anti icing control...

Page 99: ...uring forced operation 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 follow...

Page 100: ...Set 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 freez...

Page 101: ...equency Up Down by D Signal 1 P control Calculate a total of the D value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated...

Page 102: ...The OFF delay of four way valve Energize the coil for 150 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 th...

Page 103: ...ncy 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 return reset...

Page 104: ...Pump Only During heating operation the signals being sent form the indoor unit allow the operating frequency limitation and prevent abnormal high pressure The signal from the indoor unit must be divi...

Page 105: ...rature is more than 10 C the fan must be turned OFF for 30 seconds Tap Control in Indoor Outdoor Unit Silent Operation 1 When Cooling Operation When the outdoor air temperature is less than 37 C the f...

Page 106: ...e Heat Pump Only Set the upper limit of high pressure in a low Hz zone Set the upper limit of the indoor heat exchanger temperature by its operating frequency of Hz Separate into three zones reset zon...

Page 107: ...ontrol 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 control 5 Control when a discharge...

Page 108: ...e 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 contr...

Page 109: ...e super heated or moistened 3 12 5 High Temperature of the Discharge Pipe When the compressor is operating if the discharge pipe temperature exceeds a certain value open the electronic expansion valve...

Page 110: ...cted room and the temperature of liquid pipe thermistor becomes constant 3 12 10Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the...

Page 111: ...y is changed When the target pipe temperature control is active if the target frequency is changed for a specified value in a certain time period cancel the target discharge pipe temperature control a...

Page 112: ...rent exceeds 30 A the compressor gets interrupted too 3 13 3 Insufficient Gas Control Outline If a power consumption is below the specified value in which the frequency is higher than the specified fr...

Page 113: ...s 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 is not in the peak cut prohibite...

Page 114: ...indoor unit heat exchanger thermistor is disconnected An 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 It...

Page 115: ...ced 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 st...

Page 116: ...room Control start conditions Priority room setting 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...

Page 117: ...ing to only cool C Short circuit pins 1 and 3 of the connector S100 Setting to only heat H short circuit pins 3 and 5 of the connector S100 The following specifications apply to the connector housing...

Page 118: ...autions 110 2 3 Names of Parts 112 2 4 Preparation before Operation 124 2 5 AUTO DRY COOL HEAT FAN Operation 127 2 6 Adjusting the Air Flow Direction 129 2 7 POWERFUL Operation 135 2 8 OUTDOOR UNIT SI...

Page 119: ...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 Howev...

Page 120: ...Read before Operation Safety Precautions 110 110 110 110 Names of Parts 112 115 118 121 Preparation before Operation H 124 124 124 124 Operation AUTO DRY COOL HEAT FAN Operation H 127 127 127 127 Adj...

Page 121: ...installation 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 lea...

Page 122: ...under the indoor or outdoor unit that must be kept away from moisture In certain conditions moisture in the air may condense and drip After a long use check the unit stand and fittings for damage Do...

Page 123: ...Instruction SiE12 411 112 System Configuration 2 3 Names of Parts FTK X E 25 35 B Indoor Unit ON OFF 1 3 4 5 6 7 9 10 11 2 14 15 16 8 12 13...

Page 124: ...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 The operation mode refers to the following table This switch is useful whe...

Page 125: ...his 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 SILENT button for OUTDOOR UNIT SILENT operation Only works...

Page 126: ...SiE12 411 Instruction System Configuration 115 FTK X D 50 60 71 B Indoor Unit Main unit control panel 7 14 11 12 13 4 3 1 2 9 10 8 6 5 16 15...

Page 127: ...ER lamp yellow 13 HOME LEAVE lamp red Lights up when you use HOME LEAVE Operation 14 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it The operation mode re...

Page 128: ...ce to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 SILENT button for OUTDOOR UNIT SILENT operation 9 FAN setting button It...

Page 129: ...Instruction SiE12 411 118 System Configuration CDK X D 25 35 50 60 C Indoor Unit 3 6 8 9 10 7 1 4 5 2...

Page 130: ...Room temperature sensor It senses the air temperature around the unit 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...

Page 131: ...anges the temperature of time 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 132: ...ng or to a wall The descriptions contained in this manual show the case when installation is being carried out to the ceiling The methods of operation used are the same when installing to a wall CAUTI...

Page 133: ...se HOME LEAVE Operation 13 Indoor unit ON OFF switch Push this switch once to start operation Push once again to stop it Push the switch using an object with a sharp tip such as a pen This switch is u...

Page 134: ...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 OUTD...

Page 135: ...eplace 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...

Page 136: ...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 ATTENTION Receiver About remote control Never expose the remote c...

Page 137: ...35 watts of electricity even while it is not operating If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner i...

Page 138: ...ces themode setting in sequence AUTO DRY COOL HEAT FAN FTKE FTXE 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...

Page 139: ...air around all parts of the room After the start of heating operation it takes some time before the room gets warmer In heating operation frost may occur on the outdoor unit and lower the heating cap...

Page 140: ...r comfort To adjust the horizontal blades flaps 1 Press SWING button The display will light up and the flaps will begin to swing 2 When the flaps have reached the desired position press SWING button o...

Page 141: ...ds 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...

Page 142: ...reached the desired position press SWING button once more The display will go blank The flaps will stop moving To adjust the vertical blades louvres 3 Press SWING button The display will light up and...

Page 143: ...d 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 tends to collected at the bottom of the...

Page 144: ...adjust the horizontal blade flap 1 Press SWING button The display will light up and the flaps will begin to swing 2 When the flaps have reached the desired position press SWING button once more The d...

Page 145: ...elected 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 mov...

Page 146: ...ns 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 operati...

Page 147: ...LENT SENSOR ON CANCEL OFF 1 2 Note on OUTDOOR UNIT SILENT operation If using a multi system this function will work only when the OUTDOOR UNIT SILENT operation is set on all operated indoor units Howe...

Page 148: ...ir flow rate 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...

Page 149: ...ngs 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 i...

Page 150: ...art INTELLIGENT 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 O...

Page 151: ...etect 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 als...

Page 152: ...T 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 SILENT ON CANCEL OFF SWING 1 2 SENSOR Back to...

Page 153: ...nit 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 operation...

Page 154: ...es 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 C TEMP ON OFF POWERFUL HOME LEAVE MODE TI...

Page 155: ...nges 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 off To combine ON TIMER and OFF TIMER A sample se...

Page 156: ...UIET 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 time...

Page 157: ...d 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 ma...

Page 158: ...ith cloth dry it up in the shade after washing 4 Attach the front grille Set the 3 keys of the front grille into the slots and push them in all the way Close the front grille slowly and push the grill...

Page 159: ...em 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 green Replace approximately once eve...

Page 160: ...leaking from the indoor unit Stop operation and consult the service shop if this is the case Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating o...

Page 161: ...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 grille Align the rotation dowels on the left and right of the...

Page 162: ...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 Air purifying filter wit...

Page 163: ...g blocks the air inlets and the outlets of the indoor unit and the outdoor unit Check that the earth wire is not disconnected or broken Check that the drain comes smoothly out of the drain hose during...

Page 164: ...n and select fan operation Press ON OFF button and start operation 2 Clean the air filters and set them again 3 Take out batteries from the remote control 4 Turn OFF the breaker for the room air condi...

Page 165: ...washing 3 Close the front grille Push the grille at the 5 points indicated by Operation without air filters may result in troubles as dust will accumulate inside the indoor unit CAUTION Units Don t t...

Page 166: ...arm 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 filter element and...

Page 167: ...be leaking from the indoor unit Stop operation and consult the service shop if this is the case Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating...

Page 168: ...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 Th...

Page 169: ...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 air conditio...

Page 170: ...in troubles electric shocks or fire Consult the service shop where you bought the air conditioner Do not attempt to repair or modify the air conditioner by yourself Incorrect work may result in electr...

Page 171: ...Instruction SiE12 411 160 System Configuration...

Page 172: ...5 8 Signal Transmission Error between Indoor and Outdoor Units 177 5 9 Unspecified Voltage between Indoor and Outdoor Units 178 5 10 Freeze up Protection Control 179 5 11 OL Activation Compressor Ove...

Page 173: ...re described in the following pages Location of Operation Lamp In case of FTK X S 20 25 35 Series FTK X E 25 35 Series ATXS 20 25 35 Series Grille type In case of FTK X S 50 60 71 Series FTK X D 50 60...

Page 174: ...s 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 mode is set later The fi...

Page 175: ...gnosis with indoor unit LED indication 167 Diagnosis with outdoor unit LED indication 168 Some indoor units do not operate Check the type of the indoor units Check to make sure that the indoor unit ty...

Page 176: ...7 E5 17 C4 27 L4 8 LC 18 C5 28 H6 9 C9 19 H9 29 H7 10 U0 20 J6 30 U2 C O N TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SENSOR ON CANCEL OFF Signal transmitter It sends signals to the i...

Page 177: ...ature thermistor abnormality C7 Shutter drive motor shutter limit switch abnormality C9 Room temperature thermistor abnormality Outdoor Unit E5 OL activation compressor overloaded E6 Compressor lock E...

Page 178: ...nit A1 Indoor unit PCB abnormality 169 A5 Freeze up protection control or high pressure control heat pump model only 170 A6 Fan motor or related abnormality AC motor Wall 20 35 Duct Floor Ceiling 172...

Page 179: ...page Green Red A 1 2 3 4 5 3 3 3 3 00 Outdoor unit in normal condition Conduct a diagnosis of the indoor unit UA Unspecified voltage between indoor and outdoor units 203 UH Anti icing function in oth...

Page 180: ...roubleshooting 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 turn off powe...

Page 181: ...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 182: ...er thermistor check Check the intake air filter Check the air passage YES YES R1401 Check the dust accumulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is...

Page 183: ...n error due to faulty control PCB Troubleshooting Check No 16 Refer to P 213 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 outp...

Page 184: ...on Malfunction Decision Conditions When the detected rotation speed is less than 50 of the H tap under maximum fan motor rotation demand Supposed Causes Operation halt due to short circuit inside the...

Page 185: ...ut 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 ON again Doe...

Page 186: ...n 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 Re...

Page 187: ...relay harness or disconnected connector Detection error due to defective PCB 2 Foreign substance in blow port Troubleshooting Check No 3 Refer to P 204 Turn off the power Check No 3 Check the limit sw...

Page 188: ...al 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 210 Check the outdoor unit s LED A Check the...

Page 189: ...Wrong 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 th...

Page 190: ...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 indoor unit icing prote...

Page 191: ...anger thermistor Do the vacuum drying Replace the indoor unit PCB and then start the wiring error check mode R3059 Caution Be sure to turn off power switch before connect or disconnect connector or pa...

Page 192: ...off valve defective Troubleshooting Check No 4 Refer to P 205 Check No 5 Refer to P 206 Check No 6 Refer to P 207 Check No 11 Refer to P 210 Insert the thermistor in position Replace the discharge pi...

Page 193: ...ut down if the error occurs 16 times Clearing condition Continuous run for about 5 minutes normal Supposed Causes Compressor locked Troubleshooting Turn off the power Disconnect the harnesses U V and...

Page 194: ...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 195: ...n Conditions The following CT input with the compressor running continues for 2 5 seconds CT input Above 20 A The system will be shut down if the error occurs 16 times Clearing condition Continuous ru...

Page 196: ...bove 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 power...

Page 197: ...hin their normal ranges in the operating mode Malfunction Decision Conditions Either of the following conditions occurs 3 minutes after the compressor has started Cooling dry operation Outdoor unit he...

Page 198: ...turn off 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 Ma...

Page 199: ...ill reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Refrigerant shortage Four way valve malfunctioning Discharg...

Page 200: ...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 211 Replace the outdoor...

Page 201: ...rent 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 1 25 A If this error repeats 4 times the system wil...

Page 202: ...tch before connect or disconnect connector or parts damage may be occurred Running current as shown at right with relay cable 1 or 2 YES 2 sec Time NO NO DC380 30V YES Voltage within the allowable ran...

Page 203: ...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 204: ...thermistor Replace the following thermistor Indoor unit heat exchanger thermistor Replace the outdoor unit PC board Replace the indoor unit PC board Q0357 Caution Be sure to turn off power switch bef...

Page 205: ...cking the radiation fin thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 80 C above 75 C in the case of 8 0 9 0kW class...

Page 206: ...ution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES Fin thermistor NO Slightly dirty Check No 9...

Page 207: ...adiation fin temperature with the compressor on is above 90 C for 5 2 7 5 kW or smaller class systems or above 85 C for 8 0 9 0 kW class systems If a radiation fin temperature rise takes place 4 times...

Page 208: ...or the power transistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R2851 Caution Be sure to turn off power switch before c...

Page 209: ...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 210: ...ases 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 off the power and disconnect the harnesses U V and W Monitor t...

Page 211: ...s shortage detection I Input current 8 78 256 A Hz x Compressor running frequency 0 25 However when the status of running frequency 55 Hz is kept on for a certain time Note The values are different fr...

Page 212: ...exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R2853 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 213: ...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 control part s d...

Page 214: ...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 215: ...he 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 Upper fan connector Lower fan connect...

Page 216: ...e 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 temperatur...

Page 217: ...it PCB Replace the four way valve coil Replace the four way valve R2856 NO YES YES Four way valve coil resistance at 1500 ohms NO S80 voltage at DC 180 220 V with compressor on Fig 1 Disconnect the fo...

Page 218: ...ure 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 3950 Temperature C 20 211...

Page 219: ...er 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 43 C or lower Check the allowabl...

Page 220: ...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 deform...

Page 221: ...form 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 in...

Page 222: ...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 Fan motor lead wire Solenoid valve coil le...

Page 223: ...bout 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...

Page 224: ...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 Replace...

Page 225: ...Check SiE12 411 214 Service Diagnosis...

Page 226: ...233 1 8 Removal of Shunt 235 1 9 Removal of Solenoid Valve and Four Way Valve 236 1 10 Removal of Compressor 238 2 Outdoor Unit 50 52 58 68 75 Class 240 2 1 Removal of Outer Panels 240 2 2 Removal of...

Page 227: ...er Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 External appearance Remove the piping in the backw...

Page 228: ...shows the view of piping connections 5 Unscrew 1 screw of the front right panel slide it downwards and release the tabs to remove Step Procedure Points Right panel Right panel side Tabs Main unit sid...

Page 229: ...12 411 218 Removal Procedure 6 Unscrew 3 screws of the front panel to remove 7 Remove 4 screws of the discharge outlet grill 8 Slide the discharge outlet grill upwards and release 6 tabs to remove Ste...

Page 230: ...all power supplies before disassembling work Step Procedure Points Remove the discharge outlet grill 1 To take off propeller fan remove the washer fitted nut M8 2 Remove the propeller fan For reassem...

Page 231: ...nd D ports as follows 1 Black Power 2 White Power 3 Red Transmission Wires are fixed to the terminal board with screws 1 The figure shows the right side view 1 Remove the tie wire 1 Loosen the termina...

Page 232: ...1 screw of the terminal board 5 Release the tab on the top right of the terminal board 6 Pull out the terminal board and open it Glass tube fuse and varistor cannot be replaced individually because le...

Page 233: ...en reconnecting make sure to match the wire to the correct connector 2 Remove the four way valve connector S80 3 Remove the connector S93 for liquid pipe thermistor Step Procedure Points S20 white S21...

Page 234: ...r S92 for gas pipe thermistor 5 Remove the connector S90 for thermistor Outdoor air thermistor Blue Discharge pipe thermistor Black Heat exchanger thermistor Gray 6 Remove the overload relay connector...

Page 235: ...l Procedure 8 Remove the relay connector for compressor 9 Remove the electrical box cover 10 Disconnect the fan motor connector 11 Remove the discharge pipe thermistor Step Procedure Points Relay conn...

Page 236: ...he presser spring Be careful not to lose the presser spring for the discharge pipe thermistor 3 Removing the electrical box 1 Remove 2 screws of the electrical box 2 Turn the electrical box up side do...

Page 237: ...0 90 Class SiE12 411 226 Removal Procedure 3 Remove the outdoor air thermistor lead wire from the groove 4 Remove each wire harness and dismount the electrical box by lifting it Step Procedure Points...

Page 238: ...es or more after turning off all power supplies before disassembling work Step Procedure Points 1 Removing the controller PCB 1 Release the tab of the electrical box and open the terminal board 2 Disc...

Page 239: ...Outdoor Unit 80 90 Class SiE12 411 228 Removal Procedure 4 Lift the PCB at the terminal board side 5 Disconnect each wire harness connector linked to the inverter PCB Step Procedure Points...

Page 240: ...alve coil S90 Thermistor Outdoor air heat exchanger and discharge pipe S92 Gas pipe thermistor S93 Liquid pipe thermistor 2 Removing the service monitor PCB 1 Remove the service monitor PCB by releasi...

Page 241: ...wer supplies before disassembling work Step Procedure Points Remove the outer panels 1 Remove the fan motor lead wire connector S70 2 Remove the propeller fans For reassembling align mark of propeller...

Page 242: ...90 Class Removal Procedure 231 4 Remove 4 screws of the fan motor When reassembling fix the lead wire to avoid contact with the propeller fan 5 Cut the wrapper fixing the lead wire 6 Remove the fan mo...

Page 243: ...its end comes up to the end of the presser spring Be careful not to lose the presser spring for the discharge pipe thermistor 2 Take off the putty and remove each thermistor S90 Outdoor air thermisto...

Page 244: ...rk Step Procedure Points 1 Release the clip fixing the compressor lead wire 2 Remove 2 screws of the partition board and move the board leftward The partition board is not removable as it is fixed wit...

Page 245: ...ure 4 Remove the noise insulation top Carefully remove the noise insulation which is easily torn in the piping section 5 Remove the noise insulation inner 6 Remove 1 screw of the reactor Step Procedur...

Page 246: ...adhesive tape when mounting 3 Remove the putty Caution Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas welding rod Warning If refrigerant gas leaks durin...

Page 247: ...noid valve 1 Remove 1 screw of the solenoid valve coil Before taking this procedure make sure there is no refrigerant gas left in the refrigerant pipes 2 Disconnect the 2 brazed points a and b in this...

Page 248: ...the pipes be careful not to over tighten them with pliers The pipes may get deformed If the gas welding machine fails to remove the four way valve take the steps below 1 Disconnect the brazed pipe sec...

Page 249: ...rocedure Points 1 Remove the terminal cover Be careful to avoid burning the compressor terminals or the nameplate 2 Remove the overload relay 3 Disconnect the flag shape terminal As precaution keep th...

Page 250: ...uring the job ventilate the room Bear in mind that if the refrigerant gas is exposed to open flames noxious gas may be generated Caution Be careful not to get yourself burnt with the pipes and other p...

Page 251: ...sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 External appearance 2 Remove 4 screws of the top panel and 6 screws of the front...

Page 252: ...ions 2 Remove the terminal board fitting screw Match the colours of the tie wires to A B C and D ports as follows 1 Black Power 2 White Power 3 Red Transmission Wires are fixed to the terminal board w...

Page 253: ...nect 4 connectors of the electronic expansion valve lead wires 2 Remove the four way valve connector S80 3 Disconnect the thermistor connector and the overload relay connector S40 Overload relay S90 T...

Page 254: ...243 4 Disconnect the compressor relay connector 5 Remove the reactor lead wire 3 Removing the wiring fixture 1 Remove 6 screws of the wiring fixture 4 Removing the electrical box 1 Remove 1 screw of t...

Page 255: ...Class SiE12 411 244 Removal Procedure 2 Remove 1 screw of the electrical box 3 Remove the drip proof cover 4 Disconnect the fan motor lead wire 5 Lift up the electrical box and dismount it Step Proced...

Page 256: ...s before disassembling work Step Procedure Points 1 Removing the controller PCB 1 Remove 1 screw of the PCB and release two tabs 2 Release the tabs of the terminal board and open the terminal board 3...

Page 257: ...411 246 Removal Procedure 5 Lift up the control PCB 6 Disconnect each wire harness connector linked to the control PCB S31 Pin 9 To CN14 S32 Pin 5 To CN11 S33 Pin 10 To S34 S71 Pin 8 To S72 Step Proce...

Page 258: ...The figure shows the service monitor PCB 3 Removing the inverter PCB 1 Remove the 7 screws of the inverter PCB Step Procedure Points Varistor S93 S92 S90 FU2 S80 S23 S22 S21 S20 S40 S6 S33 S71 S31 LE...

Page 259: ...or For reassembling align mark of propeller fan with D cut section of motor shaft Mount the propeller fan while positioning mark to the top 1 Remove the propeller fan by removing the washer fitted nut...

Page 260: ...ssembling work Step Procedure Points 1 Remove 5 screws of the right side panel 2 Remove 2 screws of the partition board and remove the board 3 Remove the noise insulation top outer and inner Right sid...

Page 261: ...cedure Points 1 Remove 1 screw of the four way valve coil 2 Remove one screw of the solenoid valve coil 3 Remove the electronic expansion valve coil for each room Place the thermistor so that its end...

Page 262: ...l not to lose the presser spring for the discharge pipe thermistor 6 Remove the wire harness S90 Outdoor air thermistor Blue Heat exchanger thermistor Gray Discharge pipe thermistor Black S92 Gas pipe...

Page 263: ...C In pulling the pipes be careful not to over tighten them with pliers The pipes may get deformed If the gas welding machine fails to remove the four way valve take the steps below 1 Disconnect the br...

Page 264: ...rself burnt with the pipes and other parts that are heated by the gas welding rod Warning If refrigerant gas leaks during the job ventilate the room Bear in mind that if the refrigerant gas is exposed...

Page 265: ...e is no refrigerant gas left inside the refrigerant pipes before starting the job When heating up the brazed parts make sure to carry out the N2 replacement Warning The compressor s refrigerating mach...

Page 266: ...SiE12 411 Others 255 Part 8 Others 1 Others 256 1 1 Test Run from the Remote Controller 256 1 2 Jumper Settings 257...

Page 267: ...ribed below Trial operation from Remote Controller 1 Press ON OFF button to turn on the system 2 Simultaneously press center of TEMP button and MODE buttons 3 Press MODE button twice T will appear on...

Page 268: ...s box Cut the jumper JA on PCB Wireless remote controller in case of wall mounted type Cut the jumper J4 1 2 2 Jumper Setting Address J4 CUT EXIST 1 2 ADDRESS J4 CUT EXIST 1 2 JA JB JC Metallic cover...

Page 269: ...adjust 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 clot...

Page 270: ...SiE12 411 Appendix 259 Part 9 Appendix 1 Piping Diagrams 260 1 1 Indoor Units 260 1 2 Outdoor Units 266 2 Wiring Diagrams 273 2 1 Indoor Units 273 2 2 Outdoor Units 276...

Page 271: ...ING CuT 6 4CuT 7 9CuT CROSS FLOW FAN INDOOR UNIT M FAN MOTOR 6 4CuT 7 0CuT 9 5CuT HEAT EXCHANGER REFRIGERANT FLOW HEATING COOLING 6 4CuT 6 4CuT C 4D032969C 12 7 9 5 THERMISTOR ON HEAT EXCH FTXE25 FTKE...

Page 272: ...FIELD PIPING FIELD PIPING 12 7CuT 6 4CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M REFRIGERANT FLOW HEATING COOLING 4D040081E HEAT EXCHANGER THERMISTOR ON HEAT EXCH FIELD PIPING FIELD PIPI...

Page 273: ...2 411 262 Appendix FTKD71BVM FTK X D71BVMA 15 9CuT FIELD PIPING FIELD PIPING 9 5CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M HEAT EXCHANGER REFRIGERANT FLOW COOLING HEATING 4D040083C THER...

Page 274: ...C 4D045450 FIELD PIPING 6 4CuT FIELD PIPING CuT THERMISTOR ON HEAT EXCH CDXD25CVMA CDKD25CVMA CDKD25CVM CDXD35CVMA CDKD35CVMA CDKD35CVM CDKD50CVMA CDXD50CVMA CDKD50CVM CDXD60CVMA CDKD60CVMA CDKD60CVM...

Page 275: ...12 7 9 5 4D034012C 6 4 9 5 FIELD PIPING 6 4CuT FIELD PIPING CuT CuT CuT THERMISTOR ON HEAT EXCH FLX50 60 FLK50 60 FLXS50 60 FLKS50 60 FLX25 35 FLK25 35 FLXS25 35 FLKS25 35 INDOOR UNIT SIROCCO FAN CuT...

Page 276: ...W FAN COOLING HEATING FAN MOTOR FAN MOTOR 9 5CuT M M HEAT EXCHANGER 7 0CuT 7 0CuT 4D034714B FIELD PIPING 6 4CuT FIELD PIPING 9 5CuT THERMISTOR ON HEAT EXCH REFRIGERANT FLOW INDOOR UNIT 9 5CuT MUFFLER...

Page 277: ...STOR DOA LIQUID LINE STOP VALVE GAS LINE STOP VALVE FIELD PIPING GAS FIELD PIPING LIQUID EVA EVB REFRIGERANT FLOW 9 5CuT OUTDOOR UNIT COOLING 7 9CuT PROPELLER FAN DC FAN MOTOR HEAT EXCHANGER COMPRESSO...

Page 278: ...4 CuT ROOM B 9 5 CuT ROOM C 9 5 CuT ROOM A 12 7 CuT ROOM B 15 9 CuT ROOM C 15 9 CuT REFRIGERANT FLOW 9 5CuT OUTDOOR UNIT COOLING 7 9CuT PROPELLER FAN DC FAN MOTOR HEAT EXCHANGER COMPRESSOR M CAPILLARY...

Page 279: ...UID LINE STOP VALVE EVA EVB EVD EVC FIELD PIPING LIQUID FIELD PIPING GAS ROOM A 6 4 CuT ROOM B 6 4 CuT ROOM C 9 5 CuT ROOM D 9 5 CuT ROOM A 12 7 CuT ROOM B 15 9 CuT ROOM C 15 9 CuT ROOM D 15 9 CuT REF...

Page 280: ...B EVD EVC ROOM A 6 4 CuT ROOM B 6 4 CuT ROOM C 6 4 CuT ROOM D 6 4 CuT ROOM A 9 5 CuT ROOM B 9 5 CuT ROOM C 12 7 CuT ROOM D 12 7 CuT REFRIGERANT FLOW 9 5CuT OUTDOOR UNIT COOLING 7 9CuT PROPELLER FAN DC...

Page 281: ...LVE MOTOR OPERATED VALVE 12 7CuT 12 7CuT 12 7CuT 12 7CuT GAS PIPE THERMISTOR DGD GAS PIPE THERMISTOR DGC GAS PIPE THERMISTOR DGB GAS PIPE THERMISTOR DGA FILTER FILTER FILTER FILTER 3D034481B HEAT EXCH...

Page 282: ...E THERMISTOR DLC FIELD PIPING LIQUID FIELD PIPING GAS ROOM A 6 4 CuT ROOM B 6 4 CuT ROOM C 6 4 CuT ROOM A 9 5 CuT ROOM B 9 5 CuT ROOM C 12 7 CuT REFRIGERANT FLOW HEADER OUTDOOR UNIT COOLING HEATING 12...

Page 283: ...OM D 6 4 CuT ROOM B 6 4 CuT ROOM C 6 4 CuT REFRIGERANT FLOW HEADER 12 7CuT OUTDOOR UNIT COOLING HEATING 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT PROPELLER FAN DC FAN MOTOR COMPRESSOR HE...

Page 284: ...TED CIRCUIT BOARD R1T R2T THERMISTOR S1 S36 CONNECTOR S1W OPERATION SWITCH X1M TERMINAL STRIP PROTECTIVE EARTH C70 RUNNING CAPACITOR Fu FUSE INFRARED REMOTE CONTROL Fu 3 15A PCB4 PCB3 PCB5 LED1 H1P R1...

Page 285: ...F FAN MOTOR M1S M2S SWING MOTOR PCB1 PCB5 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR S1 S38 CONNECTOR S1W OPERATION SWITCH X1M TERMINAL STRIP PROTECTIVE EARTH INFRARED REMOTE CONTROL Fu 3 15A PCB2 LED H...

Page 286: ...NING CAPACITOR FU FUSE H1P H3P PILOT LAMP M1F FAN MOTOR M1S SWING MOTOR PCB1 PCB4 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR S6 S37 X11A X21A CONNECTOR S1W OPERATION SWITCH X1M TERMINAL STRIP indoor H1P...

Page 287: ...OVERLOAD PROTECTOR SPM SYSTEM POWER MODULE CT1 CURRENT TRANSFORMER ASSIGNMENTS OF TERMINALS OF THE COMP FU2 3 15A ROOM A ROOM B ROOM C TO INDOOR UNIT 3 3 3 2 2 2 1 1 1 FIELD WIRING X4M X3M X2M X1M L...

Page 288: ...DIODE BRIDGE M1C COMPRESSOR MOTOR M1F FAN MOTOR L1R REACTOR Q1L OVERLOAD PROTECTOR SPM SYSTEM POWER MODULE CT1 CURRENT TRANSFORMER FU2 3 15A N L TO INDOOR UNIT ROOM A ROOM B ROOM C FIELD WIRING 3 3 3...

Page 289: ...t R1T S6 ORG BLK 6 BRN t S71 S72 1 BLU ROOM A FU201 3 15A R8T 1 BLK 8 8 ROOM B RED t R9T GRY 1 1 S92 S70 ROOM C BRN t 8 R10T W V U N 1 GAS PIPE 7 BRN ROOM D t RED R11T S33 RED S34 8 t YLW WHT RED ORG...

Page 290: ...RIDGE M1C COMPRESSOR MOTOR M1F FAN MOTOR L1R REACTOR Q1L OVERLOAD PROTECTOR CT1 CURRENT TRANSFORMER FU2 3 15A ROOM B ROOM A ROOM D ROOM C TO INDOOR UNIT 3 3 3 3 2 2 2 2 1 1 1 1 FIELD WIRING X3M X5M X4...

Page 291: ...t S71 S72 1 BLU ROOM A FU201 3 15A R8T 1 ROOM B BLK 8 8 RED t R9T GAS PIPE GRY 1 1 S92 S70 BRN t ROOM C 8 R10T W V U N 1 7 BRN ROOM D t RED R11T S33 RED S34 8 t YLW WHT BRN BLU ORG RED RED BRN BLU RO...

Page 292: ...ssure check 209 display pcb 62 63 65 67 E e5 181 e6 182 e7 183 e8 184 ea 186 electrical box 220 241 electrical box temperature rise 194 electronic expansion valve 232 electronic expansion valve check...

Page 293: ...ion 181 on off button on indoor unit 81 operation lamp 162 outdoor air thermistor 251 outdoor heat exchanger thermistor 84 86 outdoor unit fan system check with dc motor 209 outdoor unit silent operat...

Page 294: ...50 sound insulation 233 249 specifications 18 sw1 61 63 64 sw2 64 sw7 58 T target discharge pipe temperature control 99 test run from the remote controller 256 thermistor 229 232 242 250 thermistor or...

Page 295: ...SiE12 411 iv Index...

Page 296: ...93 home leave operation 79 I indoor unit pcb abnormality 169 input current control 92 input over current detection 184 installation condition check 208 insufficient gas 200 insufficient gas control 1...

Page 297: ...istor resistance check 207 troubleshooting with the led indication 163 turning speed pulse input on the outdoor unit pcb check 212 U unspecified voltage between indoor and outdoor units 178 203 W wiri...

Page 298: ...cts and services and to assist in maintaining and improving the quality of the environment Daikin Europe N V is approved by LRQA for its Quality Management System in accordance with the ISO9001 standa...

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