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Daikin FDMR50TVMG, Service Manual

The Daikin FDMR50TVMG Service Manual is an essential resource for users of this cutting-edge air conditioning unit. Packed with detailed instructions and troubleshooting tips, this manual ensures seamless operation and efficient maintenance. Download it for free from our website to unlock the full potential of your Daikin FDMR50TVMG.

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Thermistor Functions

SiSG121917E

75

Part 4 Functions and Control

3. Thermistor Functions

The illustrations are for 5-room models as representative and have 5 lines (A ~ E) of indoor unit 
system. 
The 3-room models have 3 lines (A ~ C) and the 4-room models have 4 lines (A ~ D).

R4003603

(1) Discharge 
Pipe Thermistor

The discharge pipe thermistor is used for controlling discharge pipe temperature. If the 
discharge pipe temperature (used in place of the inner temperature of the compressor) rises 
abnormally, the operating frequency becomes lower or the operation halts.

The discharge pipe thermistor is used for detecting disconnection of the discharge pipe 
thermistor.

(2) Outdoor Heat 
Exchanger 
Thermistor

The outdoor heat exchanger thermistor is used for controlling the target discharge pipe 
temperature. The system sets the target discharge pipe temperature according to the 
outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve 
opening so that the target discharge pipe temperature can be obtained.

In cooling operation, the outdoor heat exchanger thermistor is used for detecting the 
disconnection of the discharge pipe thermistor. When the discharge pipe temperature drops 
below the outdoor heat exchanger temperature by more than a certain value, the discharge 
pipe thermistor is judged as disconnected.

In cooling operation, the outdoor heat exchanger thermistor is used for high pressure 
protection.

(3) Outdoor 
Temperature 
Thermistor

The outdoor temperature thermistor detects the outdoor air temperature and is used for 
refrigerant shortage detection, input current control, outdoor fan control, liquid compression 
protection function, and so on.

(4) Gas Pipe 
Thermistor

In cooling operation, the gas pipe thermistor is used for gas pipe isothermal control. The 
system controls electronic expansion valve opening so that the gas pipe temperature in each 
room becomes equal.

Compressor

EVC
EVD
EVE

EVB

EVA

Expansion 

v

al

v

e

D

E

C

B

A

(3) O

u

tdoor 

temperat

u

re 

thermistor

(2) O

u

tdoor heat 

exchanger 
thermistor

(4) Gas pipe 

thermistor

(7) Room 

temperat

u

re 

thermistor

(6) Indoor heat 

exchanger 
thermistor

(5) Li

qu

id pipe 

thermistor

(1) Discharge 

pipe thermistor

Summary of Contents for FDMR50TVMG

Page 1: ...Service Manual SiSG121917E Multi Split Type Air Conditioners MKS T MKB T Series Applied Models Inverter Multi Cooling Only ...

Page 2: ...VMG CTKB25 35 50TVMG 27 1 2 CTKS60 71TVMG CTKB60TVMG 29 1 3 FDKS25 35EAVMB FDKS25 35CAVMB FDKS50 60CVMB 32 1 4 FDMR50 60 71TVMG 34 2 Wireless Remote Controller Receiver 36 2 1 BRC086A2R1 for FDMR Series 36 3 Wired Remote Controller 37 3 1 BRC1E63 for FDMR Series 37 4 Outdoor Unit 38 4 1 MKS50 65 80TVMG MKB50 65TVMG 38 4 2 MKS90TVMG 40 5 Adaptor 43 5 1 BRP072C42 Wireless LAN Adaptor 43 5 2 BRP067A4...

Page 3: ...ut Current Control 81 4 6 Freeze up Protection Control 82 4 7 Outdoor Fan Control 83 4 8 Liquid Compression Protection Function 83 4 9 Low Hz High Pressure Limit 84 4 10 Electronic Expansion Valve Control 84 4 11 Malfunctions 87 Part 5 Remote Controller 88 1 Applicable Remote Controller 89 2 ARC466A19 90 3 ARC433B76 92 4 BRC086A22 94 5 BRC1E63 96 Part 6 Service Diagnosis 101 1 General Problem Symp...

Page 4: ...ror on Outdoor Unit PCB 143 7 5 Unspecified Voltage Between Indoor Unit and Outdoor Unit Anti icing Function in Other Rooms 144 7 6 Anti icing Control for Indoor Unit 145 7 7 Outdoor Unit PCB Abnormality 147 7 8 OL Activation Compressor Overload 148 7 9 Compressor Lock 150 7 10 DC Fan Lock 151 7 11 Input Overcurrent Detection 152 7 12 Discharge Pipe Temperature Control 153 7 13 High Pressure Contr...

Page 5: ...g Error Check Function 185 4 Trial Operation 187 4 1 Indoor Unit 187 4 2 Outdoor Unit 189 5 Field Settings 191 5 1 Wall Mounted and LSP Duct Type Indoor Unit 191 5 2 MSP Duct Type Indoor Unit 193 5 3 Outdoor Unit 200 6 Silicone Grease on Power Transistor Diode Bridge 203 Part 8 Appendix 204 1 Piping Diagrams 205 1 1 Indoor Unit 205 1 2 Outdoor Unit 206 2 Wiring Diagrams 209 2 1 Indoor Unit 209 2 2...

Page 6: ...SG121917E 1 Introduction 1 Safety Cautions 2 1 1 Warnings and Cautions Regarding Safety of Workers 2 1 2 Warnings and Cautions Regarding Safety of Users 4 2 Icons Used 6 3 Revision History 7 Introduction ...

Page 7: ... manual is for the person in charge of maintenance and inspection Warning Do not store equipment in a room with fire sources e g naked flames gas appliances electric heaters Be sure to disconnect the power cable from the socket before disassembling equipment for repair Working on equipment that is connected to the power supply may cause an electrical shock If it is necessary to supply power to the...

Page 8: ...ant system an excessively high pressure results causing equipment damage and injury Caution Do not repair electrical components with wet hands Working on the equipment with wet hands may cause an electrical shock Do not clean the air conditioner with water Washing the unit with water may cause an electrical shock Be sure to provide an earth grounding when repairing the equipment in a humid or wet ...

Page 9: ...able at the connection terminals Improper connections may cause excessive 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 terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power c...

Page 10: ...a fire Check to see if parts and wires are mounted and connected properly and if connections at the soldered or crimped terminals are secure Improper installation and connections may cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it A corroded installation platform or frame may cause the unit to fall resulting in injury Check ...

Page 11: ...ution is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note Note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Reference Reference Reference guides the reader to other places in this binder or in this ...

Page 12: ...Revision History SiSG121917E 7 Introduction 3 Revision History Month Year Version Revised contents 09 2019 SiSG121917E First edition ...

Page 13: ...SiSG121917E Part 1 General Information 8 1 Applicable Models 9 2 Functions 10 2 1 Indoor Unit 10 2 2 Outdoor Unit 14 Part 1 General Information ...

Page 14: ...oor Unit Outdoor Unit CTKS25TVMG CTKS35TVMG CTKS50TVMG CTKS60TVMG CTKS71TVMG CTKB25TVMG CTKB35TVMG CTKB50TVMG CTKB60TVMG FDKS25EAVMB FDKS35EAVMB FDKS25CAVMB FDKS35CAVMB FDKS50CVMB FDKS60CVMB FDMR50TVMG FDMR60TVMG FDMR71TVMG MKS50TVMG MKS65TVMG MKS80TVMG MKS90TVMG MKB50TVMG MKB65TVMG ...

Page 15: ... z z 3 D airflow z z Wiring error check Comfort airflow mode z z Anti corrosion treatment of outdoor heat exchanger Comfort Control Switchable fan speed z z Auto fan speed z z Flexibility Multi split split type compatible indoor unit Indoor unit quiet operation z z Night quiet mode automatic Flexible power supply correspondence z z Outdoor unit quiet operation manual z z Chargeless Intelligent eye...

Page 16: ... Wiring error check Comfort airflow mode z z Anti corrosion treatment of outdoor heat exchanger Comfort Control Switchable fan speed z z Auto fan speed z z Flexibility Multi split split type compatible indoor unit Indoor unit quiet operation z z Night quiet mode automatic Flexible power supply correspondence z z Outdoor unit quiet operation manual z z Chargeless Intelligent eye auto energy saving ...

Page 17: ...iring error check 3 D airflow Anti corrosion treatment of outdoor heat exchanger Comfort airflow mode Comfort Control Switchable fan speed z z Flexibility Multi split split type compatible indoor unit z z Auto fan speed z z Indoor unit quiet operation z z Flexible power supply correspondence z z Night quiet mode automatic Outdoor unit quiet operation manual z z Chargeless Either side drain right o...

Page 18: ... programmed z 3 D airflow Worry Free Reliability Durability Auto restart after power failure z z Comfort airflow mode Self diagnosis wit remo con z z Comfort Control Switchable fan speed 3 steps z z Wiring error check Auto fan speed z z Anti corrosion treatment of outdoor heat exchanger Indoor unit quiet operation Night quiet mode automatic Flexibility Multi split split type compatible indoor unit...

Page 19: ...nt of outdoor heat exchanger fins z 3 D airflow Comfort airflow mode Protection net z Comfort Control Comfortable auto fan speed Stabiliser free Auto fan speed Low high voltage shield Switchable fan speed Flexibility Multi split split compatible indoor unit Indoor unit quiet operation Flexible power supply correspondence z Night quiet mode automatic z High ceiling application Outdoor unit quiet op...

Page 20: ...heat exchanger fins z 3 D airflow Comfort airflow mode Protection net z Comfort Control Comfortable auto fan speed Stabiliser free Auto fan speed Low high voltage shield Switchable fan speed Flexibility Multi split split compatible indoor unit Indoor unit quiet operation Flexible power supply correspondence z Night quiet mode automatic z High ceiling application Outdoor unit quiet operation manual...

Page 21: ...SiSG121917E Part 2 Specifications 16 1 Indoor Unit 17 1 1 Wall Mounted Type 17 1 2 LSP Duct Connected Type 20 1 3 MSP Duct Connected Type 22 2 Outdoor Unit 23 Part 2 Specifications ...

Page 22: ... Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm φ 16 φ 16 Drawing No 3D122913 3D122914 Model CTKS50TVMG CTKS60TVMG Capacity 5 0 kW Class 6 0 kW Class Front Panel Colour White White Airflow Rates H m min cfm 12 0 424 18 4 650 M 10 3 364 15 5 547 L 8 7 307 13 3 470 SL 8 0 283 11 9 420 Fan Type Cross Flow Fan Cross Flow Fan Motor Out...

Page 23: ...Control Right Left Horizontal Downwards Air Filter Removable Washable Mildew Proof Running Current Rated A 0 59 Power Consumption Rated W 70 Power Factor Rated 51 6 Temperature Control Microcomputer Control Dimensions H W D mm 295 990 263 Packaged Dimensions H W D mm 386 1 102 389 Weight Mass kg 13 Gross Weight Gross Mass kg 18 Sound Pressure Level H M L SL dB A 48 43 39 33 Heat Insulation Both Li...

Page 24: ...pes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 4 Gas mm φ 9 5 φ 9 5 Drain mm φ 16 φ 16 Drawing No 3D122913 3D122914 Model CTKB50TVMG CTKB60TVMG Capacity 5 0 kW Class 6 0 kW Class Front Panel Colour White White Airflow Rates H m min cfm 12 0 424 18 4 650 M 10 3 364 15 5 547 L 8 7 307 13 3 470 SL 8 0 283 11 9 420 Fan Type Cross Flow Fan Cross Flow Fan Motor Output W Speed Steps ...

Page 25: ...ntrol Microcomputer Control Microcomputer Control Dimensions H W D mm 200 700 620 200 700 620 Packaged Dimensions H W D mm 274 906 751 274 906 751 Weight Mass kg 21 21 Gross Weight Gross Mass kg 29 29 Sound Pressure Level H M L SL dB A 35 33 31 29 35 33 31 29 External Static Pressure Pa 30 30 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm φ 6 4 φ 6 ...

Page 26: ... Current Rated A 0 64 0 74 Power Consumption Rated W 140 160 Power Factor Rated 95 1 94 0 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 200 900 620 200 1 100 620 Packaged Dimensions H W D mm 266 1 106 751 266 1 306 751 Weight Mass kg 27 30 Gross Weight Gross Mass kg 34 37 Sound Pressure Level H M L SL dB A 37 35 33 31 38 36 34 32 External Static Pressure Pa 40...

Page 27: ...l Dimensions H W D mm 245 1 000 800 245 1 000 800 Packaged Dimensions H W D mm Weight Mass kg 35 37 Gross Weight Gross Mass kg Sound Pressure Level dB A 34 35 Heat Insulation Piping Connections Liquid mm φ 6 4 Flare φ 6 4 Flare Gas mm φ 12 7 Flare φ 12 7 Flare Drain mm I D φ 25 O D φ 32 I D φ 25 O D φ 32 Drawing No 3D123285A 3D123285A Model FDMR71TVMG Capacity 7 1 kW Class Casing Colour Coil Type ...

Page 28: ...nt A Dimensions H W D mm 695 930 350 695 930 350 Packaged Dimensions H W D mm 762 1 004 475 762 1 004 475 Weight Mass kg 52 52 Gross Weight Gross Mass kg 58 58 Sound Pressure Level dB A 54 54 Piping Connection Liquid mm φ 6 4 3 φ 6 4 4 Gas mm φ 9 5 1 φ 12 7 2 φ 9 5 2 φ 12 7 2 Drain mm φ 16 φ 16 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connections 3 for Power...

Page 29: ...ensions H W D mm 695 930 350 990 940 320 Packaged Dimensions H W D mm 762 1 004 475 1 114 1 003 425 Weight Mass kg 52 83 Gross Weight Gross Mass kg 58 95 Sound Pressure Level dB A 54 53 Piping Connection Liquid mm φ 6 4 4 φ 6 4 5 Gas mm φ 9 5 1 φ 12 7 1 φ 15 9 2 φ 9 5 2 φ 12 7 1 φ 15 9 2 Drain mm φ 16 φ 25 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connections...

Page 30: ...mensions H W D mm 695 930 350 695 930 350 Packaged Dimensions H W D mm 762 1 004 475 762 1 004 475 Weight Mass kg 52 52 Gross Weight Gross Mass kg 58 58 Sound Pressure Level dB A 54 54 Piping Connection Liquid mm φ 6 4 3 φ 6 4 4 Gas mm φ 9 5 1 φ 12 7 2 φ 9 5 2 φ 12 7 2 Drain mm φ 16 φ 16 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes No of Wiring Connections 3 for Power Supply...

Page 31: ... 60CVMB 32 1 4 FDMR50 60 71TVMG 34 2 Wireless Remote Controller Receiver 36 2 1 BRC086A2R1 for FDMR Series 36 3 Wired Remote Controller 37 3 1 BRC1E63 for FDMR Series 37 4 Outdoor Unit 38 4 1 MKS50 65 80TVMG MKB50 65TVMG 38 4 2 MKS90TVMG 40 5 Adaptor 43 5 1 BRP072C42 Wireless LAN Adaptor 43 5 2 BRP067A42 BRP980B42 Remote Control PC board Set 43 Part 3 Printed Circuit Board Connector Wiring Diagram...

Page 32: ...am 1 S6 Connector for swing motor horizontal blade 2 S11 Connector for swing motor vertical blade 3 S26 Connector for display signal receiver PCB A2P INTELLIGENT EYE sensor PCB A3P 4 S32 Connector for indoor heat exchanger thermistor R2T 5 S200 Connector for DC fan motor 6 S403 Connector for adaptor PCB 7 H1 H2 H3 FG Connector for terminal strip 8 FU1 F1U Fuse 3 15 A 250 V 9 V2 R2V Varistor S403 S...

Page 33: ...arenthesis are the names on the appropriate wiring diagram 1 S27 Connector for control PCB A1P 2 SW1 BS1 S1W Indoor unit ON OFF switch 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 LED3 H3P LED for INTELLIGENT EYE green 6 RTH1 R1T Room temperature thermistor S27 SW1 Solder side LED2 LED1 RTH1 3P185701 1 LED3 1 CN Connector for control PCB A1P 3EB86013 1 CN ...

Page 34: ...YE sensor PCB A4P 2 S6 Connector for swing motor horizontal blade 3 S11 Connector for swing motor vertical blade 4 S26 Connector for display signal receiver PCB A3P 5 S32 Connector for indoor heat exchanger thermistor 6 S200 Connector for DC fan motor 7 S403 Connector for adaptor PCB 8 S900 Connector for filter PCB A1P S200 S11 S32 S900 S403 S6 S3 S26 3P406708 1 ...

Page 35: ...or terminal strip 2 S800 Connector for control PCB A2P 3 FG HE Connector for earth wire 4 FU1 F1U Fuse 3 15 A 250 V 5 V2 R2V Varistor 3P406709 1 FG S800 V2 FU1 HE S100 1 S27 Connector for control PCB A2P 2 SW1 BS1 S1W Indoor unit ON OFF switch 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 LED3 H3P LED for INTELLIGENT EYE green 6 RTH1 R1T Room temperature thermistor S27 SW1 S...

Page 36: ...Indoor Unit SiSG121917E 31 Part 3 Printed Circuit Board Connector Wiring Diagram INTELLIGENT EYE Sensor PCB A4P PCB4 1 S36 Connector for control PCB A2P S36 3P227885 1 ...

Page 37: ...or AC fan motor Hall IC 3 S21 Connector for centralized control HA 4 S26 Connector for display signal receiver PCB PCB2 5 S32 Connector for indoor heat exchanger thermistor R2T 6 H1 H2 H3 Connector for terminal block 7 GND Connector for terminal block earth 8 JA Address setting jumper Refer to page 191 for details 9 JB Fan speed setting when compressor stops for thermostat OFF Refer to page 192 fo...

Page 38: ...The symbols in the parenthesis are the names on the appropriate wiring diagram 1 S1 Connector for control PCB PCB1 2 SW1 S1W Indoor unit ON OFF switch 3 LED1 H1P LED for option red 4 LED2 H2P LED for timer yellow 5 LED3 H3P LED for operation green 6 RTH1 Room temperature thermistor S1 LED3 LED2 RTH1 LED1 SW1 2P084375 1 ...

Page 39: ...istor 4 X25A Connector for drain pump motor 5 X27A Connector for terminal block for power supply 6 X28A Connector for power supply wiring for option 7 X30A Connector for terminal block for wired remote controller remote controller receiver 8 X33A Connector for wiring option 9 X35A Connector for wiring adaptor option 10 X70A Connector for indoor fan PCB A2P 11 FU1 F1U Fuse 3 15 A 250 V 12 HAP LED f...

Page 40: ...sis are the names on the appropriate wiring diagram 1 X3A Connector for control PCB A1P 2 X6A Connector for reactor 3 X8A Connector for indoor fan motor 4 X10A Connector for terminal block for power supply 5 FU2 F2U Fuse 5 A 250 V 6 FU4 F4U Fuse 6 3 A 250 V 7 HAP LED for service monitor green 2P442228 17 FU2 X8A X3A HAP X10A FU4 X6A ...

Page 41: ...agram 36 2 Wireless Remote Controller Receiver 2 1 BRC086A2R1 for FDMR Series Display Signal Receiver PCB 1 SS1 MAIN SUB setting switch Refer to page 198 for details 2 SS2 Address setting switch Refer to page 198 for details 3 P1 P2 Terminal for indoor unit control PCB A1P SS1 P2 P1 3P431101 1 SS2 ...

Page 42: ...917E 37 Part 3 Printed Circuit Board Connector Wiring Diagram 3 Wired Remote Controller 3 1 BRC1E63 for FDMR Series Wired Remote Controller PCB 1 P1 P2 Terminal for indoor unit 2 R1T Room temperature thermistor P2 R1T P1 2P298037 11 ...

Page 43: ...coil D port 65 80 class only 6 S40 Connector for overload protector 7 S70 Connector for outdoor fan motor 8 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe temperature 9 S92 Connector for gas pipe thermistor 10 S93 Connector for liquid pipe thermistor 11 S201 S202 Connector for service monitor PCB PCB2 12 HL1 HN1 Connector for terminal strip power supply 13 ...

Page 44: ...D1 LED2 LED3 LED4 LED5 LED for service monitor red 4 SW1 Forced cooling operation ON OFF switch Refer to page 183 for details 5 SW2 Operation mode switch Refer to page 183 for details 6 SW3 Wiring error check switch Refer to page 185 for details 7 SW4 Priority room setting switch Refer to page 200 for details 8 SW6 1 NIGHT QUIET mode setting switch Refer to page 201 for details 3P346711 11 S502 SW...

Page 45: ...port 7 S40 Connector for overload protector 8 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 9 S92 Connector for gas pipe thermistor 10 S93 Connector for liquid pipe thermistor 11 S202 S211 Connector for inverter PCB PCB2 12 S206 S209 S210 Connector for service monitor PCB PCB3 13 HL1 HN1 Connector for terminal block power supply 14 HL2 HN2 Connector for in...

Page 46: ...rter PCB PCB2 1 S70 Connector for outdoor fan motor 2 S401 S411 Connector for main PCB PCB1 3 HL402 HN402 Connector for main PCB PCB1 4 DCP2 DCM2 Connector for main PCB PCB1 5 FU2 Fuse 3 15 A 250 V 6 U V W Connector for compressor 2P316739 3 U DCP2 DCM2 V W S401 FU2 S70 S411 HL402 HN402 ...

Page 47: ...ED4 LED5 LED for service monitor red 4 SW1 Forced cooling operation ON OFF switch Refer to page 183 for details 5 SW2 Operation mode switch Refer to page 183 for details 6 SW3 Wiring error check switch Refer to page 185 for details 7 SW4 Priority room setting switch Refer to page 200 for details 8 SW5 5 NIGHT QUIET mode setting switch Refer to page 201 for details LED5 LED3 LED1 LED A S502 SW5 5 S...

Page 48: ...ccessory for CTKS series optional for CTKB series 5 2 BRP067A42 BRP980B42 Remote Control PC board Set Adaptor PCB Standard accessory for CTKS series optional for CTKB series 1 Connector Connector for adaptor PCB 3P466519 1 Connector 1 S21 Connector for wireless LAN adaptor PCB 2 S601 S602 Connector for S403 on indoor unit control PCB 3P166094 3 3P166094 4 S601 S21 S602 ...

Page 49: ...5 Other Functions 63 2 MSP Duct Type Functions 64 2 1 Drain Pump Control 64 2 2 Thermostat Sensor in Wired Remote Controller 66 2 3 Freeze Prevention Control 67 2 4 Clock and Calendar Setting 68 2 5 Schedule Timer Operation 70 2 6 Other Functions 74 3 Thermistor Functions 75 4 Control Specification 77 4 1 Mode Hierarchy 77 4 2 Frequency Control 77 4 3 Controls at Mode Changing Start up 79 4 4 Disc...

Page 50: ...ency Principle Control Parameters The frequency of the compressor is controlled by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature The target frequency is adapted by additional parameters in the following cases Frequency restrictions Initial settings Forced cooling operation Inverter Princi...

Page 51: ...rgy saving cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the maximum frequency Compressor protection function Refer to page 79 Discharge pipe temperature control Refer to page 80 Input current control Refer to page 81 Freeze up protection control Refer to page 82 Forced...

Page 52: ...g table explains the auto swing process for cooling dry and fan 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room When the horizontal swing and vertical swing are both set to automatic operation the airflow becomes 3 D airflow The horizontal and vertical swing motions are alternated and the airflow direction changes in t...

Page 53: ...r Unit Outline Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature Automatic Fan Speed Control In automatic fan speed operation the step SL is not available R4003616 Cooling The following drawings explain the principle of fan ...

Page 54: ... is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Thermostat turns on also when the room temperature is in the zone B for 450 seconds Room thermistor temperature target temperature 1 5 C 0 5 C 2 C 1 C M ML L Fan speed R12390 Room thermistor temperature at start up Target temperature X Thermosta...

Page 55: ...g time Cooling 10 minutes Dry 450 seconds Cooling Dry 1 8 NIGHT SET Mode Outline When the OFF TIMER is set NIGHT SET mode is automatically activated NIGHT SET mode keeps the airflow rate setting Details NIGHT SET mode continues operation at the target temperature for the first one hour then automatically raises the target temperature slightly This prevents excessive cooling to ensure comfortable s...

Page 56: ...HOME LEAVE Operation Applicable Models FDKS25 35EAVMB FDKS25 35CAVMB FDKS50 60CVMB Outline HOME LEAVE operation is a function that allows you to record your preferred set temperature and airflow rate You can start your preferred operation mode simply by pressing HOME LEAVE button on the remote controller Details 1 Function Start The function starts when HOME LEAVE button is pressed in cooling oper...

Page 57: ...Adjust the airflow rate with the FAN setting button as you like HOME LEAVE operation will run with these settings the next time you start HOME LEAVE operation To change the recorded information repeat steps 1 3 Others The set temperature and airflow rate are memorized in the remote controller When the remote controller is reset due to replacement of battery it is necessary to set the temperature a...

Page 58: ... 60 rpm when no one is in the area When there is no signal from the motion sensor in 20 minutes the microcomputer judges that nobody is in the room and operates the unit at a temperature shifted from the target temperature Cooling Dry 1 2 C higher For dry operation the temperature cannot be set with a remote controller but the target temperature is shifted internally 1 sec Sampling 20 msec High Lo...

Page 59: ...l extent the air conditioner can be operated by increasing the indoor fan rotating speed and the compressor frequency Details When POWERFUL button is pressed the fan speed and target temperature are converted to the following states for 20 minutes Ex POWERFUL operation in cooling A 40 80 rpm depending on the model POWERFUL operation cannot be used together with ECONO COMFORT AIRFLOW or OUTDOOR UNI...

Page 60: ...ct or Select button to set the clock to the current day of the week 3 Press Clock button blinks 4 Press Select or Select button to set the clock to the present time Holding down Select or Select button rapidly increases or decreases the time display 5 Press Clock button to set the clock Point the remote controller at the indoor unit when pressing the button blinks and clock setting is completed R2...

Page 61: ... taking the following steps 1 Press CLOCK button is displayed and blinks 2 Press TIMER or TIMER button to adjust the clock to the present time Holding down TIMER or TIMER button rapidly increases or decreases the time display 3 Press CLOCK button again blinks and clock setting is completed CLOCK button R23537 TIMER button ...

Page 62: ...FF OFF ON OFF OFF ON Program 1 Program 2 Program 3 Program 4 Up to 4 reservations per day and 28 reservations per week can be set using the WEEKLY TIMER The effective use of the copy mode simplifies timer programming The use of ON ON ON ON settings for example makes it possible to schedule operating mode and set temperature changes Furthermore by using OFF OFF OFF OFF settings only the turn off ti...

Page 63: ...2 Press to select the desired day of the week and reservation number Pressing changes the reservation number and the day of the week 3 Press The day of the week and reservation number will be set and blink 4 Press to select the desired mode Pressing changes the or setting in sequence ON TIMER OFF TIMER blank No Setting Pressing puts the sequence in reverse In case the reservation has already been ...

Page 64: ...mp appears on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights orange Display A reservation made once can be easily copied and the same settings used for another day of the week Refer to Copy mode NOTE Notes on WEEKLY TIMER operation The day of the week ON OFF TIMER mode time and set temperature only for ON TIMER mode can be set with the WEEKLY TIMER Other settings for the ON ...

Page 65: ...ination day of the week 5 Press 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 To continue copying the settings to other days of the week repeat STEP 4 and STEP5 6 Press to complete the setting appears on the LCD and WEEKLY TIMER operation is activated NOTE Note on COPY MODE The entire reservation of the source da...

Page 66: ...3 Press appears on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights orange Display To deactivate WEEKLY TIMER operation s s e r P while is displayed on the LCD disappears from the LCD The TIMER lamp goes off To reactivate the WEEKLY TIMER operation press again If a reservation deactivated with is activated once again the last reservation mode will be used NOTE If not all the r...

Page 67: ...till other reservations WEEKLY TIMER operation will be activated Reservations for each day of the week This function can be used for deleting reservations for each day of the week It can be used while confirming or setting reservations 1 Press The day of the week and the reservation number will be displayed 2 Press to select the day of the week to be deleted 3 Hold for about 5 seconds The reservat...

Page 68: ...ssing or the battery has run out The operation mode refers to the following table In the case of multi system operation there are times when the unit does not activate with ON OFF switch 1 15 3 Auto restart Function If a power failure even a momentary one occurs during the operation the operation restarts automatically in the same conditions as before when the power supply is restored to the condi...

Page 69: ... the thermostat turns OFF the drain pump continues to operate for another 5 minutes Notes 1 If the float switch turns ON again during the residual operation of the drain pump cooling operation also turns on again thermostat ON 2 If the float switch remains OFF even after the residual operation of the drain pump has ended the error code A3 is displayed on the remote controller 3 The drain pump turn...

Page 70: ...ultaneously Notes 1 If the float switch continues to turn OFF and ON 5 times consecutively it is judged as a drain system error and the error code AF is displayed on the remote controller 2 The drain pump continues to turn ON OFF in accordance with the float switch ON OFF even after AF is displayed on the remote controller 3 While the error code AF is displayed if the float switch remains OFF even...

Page 71: ...uction temperature has changed from 18 C to 30 C A F This example also assumes there are several other air conditioners and the suction temperature changes even when the thermostat sensor is off Body thermostat sensor is used for temperatures from 18 C to 23 C A C Wired remote controller thermostat sensor is used for temperatures from 23 C to 27 C C E Body thermostat sensor is used for temperature...

Page 72: ...nce with the following conditions and is also set in accordance with the conditions given below Details Conditions for starting Temperature is 1 C or less for total of 40 min or temperature is 5 C or less for total of 10 min Conditions for cancelling Temperature is 7 C or more for 10 min continuously Ex Case where temperature is 5 C or less for total of 10 min Freeze prevention control Normal oper...

Page 73: ...tinuously Operation 4 Date Time Year 2013 Month 04 Day 04 Thursday 0 00 Return Setting Select Day with buttons Change the day with buttons Holding down the button causes the number to change continuously Days of the week change automatically 5 Date Time Year 2013 Month 04 Day 04 Thursday 12 00 Return Setting Select Hour with buttons Change the hour with buttons Holding down the button causes the n...

Page 74: ...dar screen Press buttons to select 12H 24H Clock Press Menu Enter button to display the 12H 24H Clock screen 2 12H 24H Clock 24H Return Setting By default the time display is set to the 24H format Press Menu Enter button after selecting the item The confirmation screen will appear 3 Save the settings 12H 24H Clock Yes No Return Setting Operation Press buttons to select 12H or 24H Press buttons to ...

Page 75: ...00 Return Setting Before setting the schedule the clock must be set If the clock has not been set a screen like the one on the left will appear Press buttons to select Yes and press Menu Enter button The Date Time screen will appear Set the current year month day and time 2 Setting Schedule Enable Disable Schedule nr set Holidays Settings Return Press buttons to select the desired item on the Sche...

Page 76: ...y to make the holiday settings Press buttons to switch the setting between set and release Multiple days can be selected as holidays Note To enable the schedule timer for the day selected as a holiday the holiday setting must be released 3 Return Setting Schedule Holidays Multiple selection Sun Mon Tue Wed Thu Fri Sat 4 Return Setting Save the settings Schedule Yes No Press button to select Yes Re...

Page 77: ... press buttons to set the desired time Each press of buttons moves the numbers by 1 hour or 1 minute 4 Schedule nr 1 Mon Time Act Cool Heat 6 00 Return Setting Schedule nr 1 Mon Time Act Cool Heat 6 00 ON 28 C 21 C Return Setting Press the buttons to move the highlighted item and press buttons to configure ON OFF settings ON or OFF changes in sequence when buttons are pressed Act column The set te...

Page 78: ...The contents for Monday are copied by pressing the Mode Selector button after selecting Tuesday 6 Save the settings Schedule Yes No Return Setting Press buttons to select Yes Press the Menu Enter button to confirm the settings for each day and return to the Main Menu screen 1 Setting Schedule Enable Disable Schedule nr set Holidays Settings 2 2 Return Press buttons to select Enable Disable Press M...

Page 79: ...iver of the indoor unit Start Press emergency operation switch The indoor unit runs in the previous operation mode The system operates with the previously set fan speed Stop Press emergency operation switch again FDMR Series 2 6 3 Auto restart Function If a power failure even a momentary one occurs during the operation the operation restarts automatically in the same conditions as before when the ...

Page 80: ... discharge pipe temperature can be obtained In cooling operation the outdoor heat exchanger thermistor is used for detecting the disconnection of the discharge pipe thermistor When the discharge pipe temperature drops below the outdoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected In cooling operation the outdoor heat exchanger ther...

Page 81: ...that the target discharge pipe temperature can be obtained In cooling operation the indoor heat exchanger thermistor is used for freeze up protection control If the indoor heat exchanger temperature drops abnormally the operating frequency becomes lower or the operation halts In cooling operation the indoor heat exchanger thermistor is used for anti icing function If any of the following condition...

Page 82: ...ls The compressor s frequency is determined by taking the following steps 1 Determine command frequency Command frequency is determined in the following order of priority 1 Forced cooling 2 Indoor frequency command Air conditioner control mode Forced operation mode Forced cooling operation for pump down operation Wiring error check operation Power transistor test mode Normal operation mode Fan Coo...

Page 83: ...compressor or when conditions are varied due to a change of operating rooms the frequency must be initialized according to the total of the maximum D value of each room and the total Q value Q of the operating room the room in which the thermostat is set to ON PI Control 1 P control Maximum D is calculated in each sampling time 20 seconds and the frequency is adjusted according to its difference f...

Page 84: ...one room or when the outdoor unit quiet operation commands come from all the rooms the upper limit frequency is lower than the usual setting 4 3 Controls at Mode Changing Start up 4 3 1 3 Minute Standby Turning on the compressor is prohibited for 3 minutes after turning off 4 3 2 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency is set as follow...

Page 85: ...upper limit of frequency is set to keep the discharge pipe temperature from rising further Details Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Reset zone The upper limit of frequency is canceled A C B C C C D C E C 120 108 104 102 102 Reset zone Stop zone D...

Page 86: ...r limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is lowered by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled Limitation of current dropping and stop value according to the outdoor temperature The current drops when outdoor temperature becomes hi...

Page 87: ...eze up protection control starts the compressor stops the airflow rate is fixed to L tap and the drain pump turns ON Conditions for starting and ending are as below Starting conditions The freeze up protection control starts when any of the following conditions is satisfied The indoor heat exchanger temperature remains at A C or lower for 1 minute The accumulated time that the indoor heat exchange...

Page 88: ... cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 5 Fan speed control for POWERFUL operation The rotation speed of the outdoor fan is increased during POWERFUL operation 6 Fan speed control during indoor outdoor unit quiet operation The rotation speed of the outdoor fan is reduced by the command of the indoor outdoor unit quiet operation 7...

Page 89: ...2 Pressure equalizing control Room Distribution Control 1 Gas pipe isothermal control 2 Dew prevention control for indoor rotor Open Control 1 Electronic expansion valve control when starting operation 2 Electronic expansion valve control when the frequency changes 3 Electronic expansion valve control for oil recovery 4 Electronic expansion valve control when the discharge pipe temperature is abno...

Page 90: ...g Operation Room The electronic expansion valve opening is controlled when the operation starts thus preventing superheating or liquid compression 4 10 5 Control when the Frequency Changes When the target discharge pipe temperature control is active if the target frequency changes to a specified value in a certain period of time the target discharge pipe temperature control is canceled and the tar...

Page 91: ...connection is ascertained the compressor continues operation for 9 minutes and then stops If the compressor stops repeatedly the system is shut down 4 10 8 Gas Pipe Isothermal Control During Cooling When the units are operating in multiple rooms the gas pipe temperature is detected and the electronic expansion valve opening is adjusted so that the temperature of the gas pipe in each room becomes e...

Page 92: ...temperature exceeds 130 C the compressor stops 4 11 3 Refrigerant Shortage Control Outline Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as refrigerant shortage The power consumption is low comparing with that in the normal operation when refrigerant is insufficient and refrigerant shorta...

Page 93: ...SiSG121917E Part 5 Remote Controller 88 1 Applicable Remote Controller 89 2 ARC466A19 90 3 ARC433B76 92 4 BRC086A22 94 5 BRC1E63 96 Part 5 Remote Controller ...

Page 94: ...h Item Category Installation Operation Manual URL https global1d daikin com business_portal login Series Model Name Wireless Remote Controller Reference Page Wired Remote Controller Reference Page CTKS CTKS25TVMG ARC466A19 90 CTKS35TVMG CTKS50TVMG CTKS60TVMG CTKS71TVMG CTKB CTKB25TVMG CTKB35TVMG CTKB50TVMG CTKB60TVMG FDKS FDKS25EAVMB ARC433B76 92 FDKS35EAVMB FDKS25CAVMB FDKS35CAVMB FDKS50CVMB FDKS...

Page 95: ... aim the transmitter at the indoor unit If there is anything to block signals between the unit and the remote controller such as a curtain the unit will not operate Do not drop the remote controller Do not get it wet The maximum distance for communication is about 7 m Fan setting button In indoor unit quiet operation operation sound becomes weak The airflow rate also decreases In DRY operation the...

Page 96: ...again to complete TIMER setting R25261 OUTDOOR UNIT QUIET operation is not available in FAN and DRY operation OUTDOOR UNIT QUIET operation and POWERFUL operation cannot be used at the same time Priority is given to the function you pressed last Econo 4 Quiet button Blank No setting Combination Comfort Sensor button COMFORT AIRFLOW Operation 2 INTELLIGENT EYE Operation 3 INTELLIGENT EYE COMFORT AIR...

Page 97: ... Press this button to start HOME LEAVE operation The HOME LEAVE lamp lights up POWERFUL 2 button Starts POWERFUL operation ON OFF button Press this button once to start operation Press once again to stop it Display LCD Displays the current settings In this illustration each section is shown with all its displays on for the purpose of explanation R22747 HOME LEAVE lamp Press the button again to can...

Page 98: ...ress this button and adjust the time with TIMER setting button Press this button again to complete TIMER setting OFF TIMER button Press this button and adjust the time with TIMER setting button Press this button again to complete TIMER setting TIMER Setting button Changes the ON OFF TIMER settings CLOCK 3 button TIMER CANCEL button Cancels the timer setting In indoor unit quiet operation operation...

Page 99: ...SiSG121917E BRC086A22 Part 5 Remote Controller 94 4 BRC086A22 13 2 6 1 3 7 8 12 10 9 11 4 5 18 14 19 17 20 15 16 23 24 26 21 25 22 FDMR Series ...

Page 100: ...12 BACKLIGHT BUTTON Press this button to turn the backlight on or off 13 SIGNALTRANSMITTER This sends the signals to the indoor unit 14 PROGRAMMINGTIMER BUTTON Use this button for programming START and or STOP time 15 TIMER MODE ON OFF BUTTON Refer to operation manual 16 TIMER RESERVE CANCEL BUTTON Refer to operation manual 17 AIRFLOW DIRECTION ADJUST BUTTON Refer to operation manual 18 OPERATION ...

Page 101: ...emote Controller 96 5 BRC1E63 2 3 Menu Enter button 8 ON OFF button 10 Cancel button 9 Operation lamp Green 11 LCD with backlight 4 Up button 5 Down button 6 Right button 7 Left button 1 Mode Selector button Airflow Setting button ...

Page 102: ...ghlight the item below the current selection The highlighted items will be scrolled continuously when the button is kept pressed Used to change the item selected Be sure to press the part with the symbol Used to highlight the next items on the right hand side Display contents are changed to next screen per page Be sure to press the part with the symbol Right button Used to highlight the next items...

Page 103: ...at 35 C 10 C Setback Fri 11 03 14 Selectable Display Item with room temperature selected 13 Clock 12 24 hours time display Detailed display example 1 4 Set Setback Temperature display Auto Cool Heat 28 C 20 C Set to Detailed display example 2 2 Airflow Rate Air Volume Fan Speed is not appear No airflow rate control function 13 Clock No clock setting 3 Airflow Direction is not appear No airflow dir...

Page 104: ...ditioner is turned off Setback indicates the setback temperatures that are set for the air conditioner Displayed when a Heat Reclaim Ventilator is connected For details refer to the Operation Manual of the Heat Reclaim Ventilator Displays if the Defrost Hot start operation is active If ventilating operation is displayed Message Displayed for a few seconds when an operation button is pressed and th...

Page 105: ... prohibited Changeover Under Control VRV only Displayed if the remote controller has no cool heat selection eligibility The setback icon blinks when the air conditioner is turned on under the setback control Clock 12 24 hours time display Displayed when the clock is set If the clock is not set will be displayed Displayed when the detailed display is selected No detailed items are selected by defau...

Page 106: ... 6 1 Indoor Unit PCB Abnormality 127 6 2 Drain Water Level Control System Abnormality 128 6 3 Indoor Fan Motor or Related Abnormality 129 6 4 Fan PCB Abnormality 131 6 5 Drain System Abnormality 132 6 6 Thermistor or Related Abnormality 133 6 7 Remote Controller Thermistor Abnormality 134 6 8 Signal Transmission Error Between Indoor Unit and Remote Controller 135 6 9 Signal Transmission Error Betw...

Page 107: ...l Box Temperature Rise 164 7 20 Radiation Fin Temperature Rise 165 7 21 Output Overcurrent Detection 167 8 Check 169 8 1 Thermistor Resistance Check 169 8 2 Indoor Fan Motor Connector Check 170 8 3 Hall IC Check 171 8 4 Power Supply Waveform Check 172 8 5 Electronic Expansion Valve Check 172 8 6 Inverter Unit Refrigerant System Check 173 8 7 Inverter Analyzer Check 173 8 8 Rotation Pulse Check on ...

Page 108: ... of the operation limit Check the reference page for the operation limit 218 Diagnose with remote controller indication 114 Some indoor units do not operate Check the type of the indoor units Check if the indoor unit type is compatible with the outdoor unit Diagnose with remote controller indication 114 Units operate but do not cool Check for wiring and piping errors in the connection between the ...

Page 109: ...llowing errors is detected 1 A protection device of the indoor or outdoor unit is activated or the thermistor malfunctions 2 A signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages CTKS CTKB Series R6000635 FDKS Series ON OFF Operation lamp green Operation lamp green Q0340 ...

Page 110: ...en the operation mode is automatic set all the indoor unit operation mode as cooling or heating and check again if the operation lamp is normal If the lamp stops blinking after the above steps there is no malfunction Operation stops and operation lamp blinks only for the indoor unit that has a different operation mode set later The first set operation mode has priority Service Monitor FDKS FDMR Se...

Page 111: ...the microcomputer works in order the LED A blinks and when the system is in normal condition the red LEDs are OFF Even after the error is canceled and the unit operates in normal condition the LED indication remains Service monitor PCB The illustration is for 4 room model as representative LED A LED 1 LED 2 LED 3 LED 4 50 65 80 class 90 class LED A LED 1 LED 2 LED 3 LED 4 LED 5 ...

Page 112: ...two consecutive beeps indicate non corresponding codes 2 To return to the normal mode hold Timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try method 2 Refer to page 108 No Code No Code No Code 1 00 14 U0 27 UA 2 A5 15 C7 28 UH 3 E7 16 A3...

Page 113: ...Temp button 3 Press Mode button to enter the service check mode R6000649 The left side number blinks R6000111 4 Press Temp or Temp button and change the number until you hear the two consecutive beeps or the long beep R6000650 5 Diagnose by the sound Beep The left side number does not correspond with the error code Two consecutive beeps The left side number corresponds with the error code but the ...

Page 114: ...000650 8 Diagnose by the sound Beep The left side number does not correspond with the error code Two consecutive beeps The left side number corresponds with the error code but the right side number does not Long beep Both the left side and right side numbers correspond with the error code 9 Determine the error code The numbers indicated when you hear the long beep are the error code Refer to page ...

Page 115: ... consecutive beeps indicate non corresponding codes 2 To return to the normal mode hold TIMER CANCEL button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try method 2 Refer to page 111 No Code No Code No Code 1 00 12 C7 23 H0 2 U4 13 H8 24 E1 3 F3 14 J3 25...

Page 116: ... long beep 3 Diagnose by the sound Beep The left side number does not correspond with the error code Two consecutive beeps The left side number corresponds with the error code but the right side number does not Long beep Both the left side and right side number correspond with the error code The numbers indicated when you hear the long beep are the error code Error codes and description Refer to p...

Page 117: ...t Long beep Both the left side and right side numbers correspond with the error code 7 Determine the error code The numbers indicated when you hear the long beep are the error code Refer to Error codes and description on page 114 115 8 Press MODE button to exit from the diagnosis mode The display T means the trial operation mode Refer to page 187 for trial operation 9 Press ON OFF button twice to ...

Page 118: ...R button 0 on the right hand of the malfunction code blinks 6 Press PROGRAMMING TIMER button and change the malfunction code Press until the indoor unit makes a long beep The malfunction code is fixed when the indoor unit makes a long beep 7 Press OPERATION MODE SELECTOR button to get the display back to the normal state 3 2 4 BRC1E63 Wired Remote Controller 1 3 5 7 2 4 6 R24923 1 Cool Return Sett...

Page 119: ...ture thermistor or related abnormality 123 U4 Signal transmission error between indoor unit and outdoor unit 124 UA Unspecified voltage between indoor unit and outdoor unit 126 Error Codes Description Reference Page 00 Normal condition A1 Indoor unit PCB abnormality 127 A3 Drain water level control system abnormality 128 A6 Fan motor or related abnormality DC motor FDMR series 129 A8 Fan PCB abnor...

Page 120: ... h h i h U2 Low voltage detection or over voltage detection 140 j h i h h h U3 Wiring Error Check Unexecuted 142 j h i i i h U7 Signal transmission error on outdoor unit PCB 143 j i h i i h A5 Anti icing control for indoor unit 145 j i i i h h E1 Outdoor unit PCB abnormality 147 j i h i h h E5 OL activation compressor overload 148 j h i i h h E6 Compressor lock 150 j i i i i h E7 DC fan lock 151 j...

Page 121: ...it 5 1 Indoor Unit PCB Abnormality Error Code A1 Method of Error Detection The system checks if the circuit works properly within the microcomputer of the indoor unit Error Decision Conditions The system cannot set the internal settings Supposed Causes Wrong models interconnected Defective indoor unit PCB Disconnection of connector Reduction of power supply voltage ...

Page 122: ...d YES NO NO YES NO NO YES Caution To secure the connection disconnect the connectors once and then reconnect YES NO YES NO YES NO YES Match the compatible models Correct the power supply Replace the indoor unit PCB control PCB Completed Completed Correct the power supply Replace the indoor unit PCB control PCB Completed Be sure to turn off the power switch before connecting or disconnecting connec...

Page 123: ...it Dust accumulation on the indoor heat exchanger Defective indoor heat exchanger thermistor Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 169 NO NO NO Check No 01 Check the indoor heat exchanger thermistor YES YES R20789 YES YES NO Caution Provide sufficient air passage Clean the air filter Clean the indoor heat exchanger Replace the indoor unit PCB control PCB Replace the indo...

Page 124: ... power supply voltage Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor Defective indoor unit PCB Troubleshooting Caution OK NO YES YES NO Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check the connector for connection Note The motor m...

Page 125: ...own or short circuit Check the motor control voltage Check the indoor unit PCB for rotation pulse Fan rotates smoothly Resistance OK Is the motor control voltage 15 VDC generated Replace the indoor fan motor Replace the indoor unit PCB control PCB Replace the indoor fan motor Replace the indoor unit PCB control PCB YES NO NO Abnormal sound occurs Is the rubber cushion properly fitted YES Correct t...

Page 126: ...tation speed detected by the Hall IC during fan motor operation determines abnormal fan motor operation Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap Supposed Causes Power supply voltage out of specification Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defecti...

Page 127: ...l PCB Replace the fan motor Replace the indoor unit PCB control PCB Replace the fan motor Replace the capacitor Replace the indoor unit PCB control PCB Replace the fan motor Replace the indoor unit PCB control PCB Measure the voltage between the black and white lead wires of the fan motor and check if the maximum voltage reaches the rated voltage Check No 04 Check Hall IC Is there an output Check ...

Page 128: ...or more or 0 04 V or less with the power on Supposed Causes Disconnection of connector Defective thermistor s Defective indoor unit PCB Troubleshooting C4 Indoor heat exchanger thermistor C9 Room temperature thermistor Check No 01 Refer to P 169 YES R21870 NO Check No 01 Check the thermistor resistance value YES NO Caution Correct the connection Replace the defective thermistor Replace the indoor ...

Page 129: ...is checked whether it is normal Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage out of specification Reduction of power supply voltage Wiring error Breaking of the connecting wires between the indoor and outdoor units wire No 3 Defective outdoor unit PCB Short circuit inside the fa...

Page 130: ... wires between the indoor unit and the outdoor unit Replace the outdoor unit PCB main PCB Replace the connection wires between the indoor unit and outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there any wiring error Check the connection wires between the indoor unit and the outdoor unit Check the LED A on the outdoor unit PCB Be sure to turn off the power switch bef...

Page 131: ...cted Supposed Causes Wrong models interconnected Wrong wiring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R23289 Caution NO YES YES NO Match the compatible models OK Correct the connection Check the part numbers of the indoor and outdoor unit PCB with the Parts List If not matched change for the correct ...

Page 132: ...ut power It can be erased either within the computer or externally and usually requires more voltage for erasure than the common 5 volts used in logic circuits It functions like non volatile RAM but writing to EEPROM is slower than writing to RAM Supposed Causes Defective indoor unit PCB External factor noise etc Troubleshooting Caution Be sure to turn off the power switch before connecting or dis...

Page 133: ...fer to page 34 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Connect the drain pump Replace the indoor unit PCB control PCB Replace the drain pump There is a drain system abnormality Connect the float switch Replace the float switch Replace the indoor unit PCB control PCB R22268 NO YES NO NO YES YES Is the drain pump connected to...

Page 134: ... the fan PCB Defective fan PCB Defective fan motor No fuse continuity Trouble Shooting Connect the connector correctly Turn OFF the power supply and wait for 10 minutes NO Turn ON the power supply while the fan motor connector 1 is disconnected YES NO Connect the connector correctly NO YES YES Replace the fuse There is a continuity in the fuse 2 on the fan PCB or fan motor harness NO The fan motor...

Page 135: ...es Turn OFF the power supply and wait for 10 minutes NO NO Replace the fan motor Each resistance between the pins is equal to or lower than 1 Ω Replace the fan motor Replace the fan PCB A2P The HAP lamp on the indoor unit main PCB is blinking while the HAP lamp on the fan PCB is not blinking YES YES Check the fan motor connectors Check No 24 Replace the fan PCB A2P When A6 abnormality still reoccu...

Page 136: ...connecting or disconnecting connectors or parts may be damaged Check for the indoor unit control PCB A1P and the fan PCB A2P Connect the connector correctly NO YES YES Is the connector X3A on the fan PCB connected correctly Connect the connector correctly NO YES Is the connector X70A on the indoor unit main PCB connected correctly Replace the harness YES Is the harness connecting X3A and X70A brok...

Page 137: ...allation Defective float switch Defective indoor unit PCB Troubleshooting YES YES NO NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged The float switch may be defective Check if the drain up height and the horizontal pipe length exceed the specifications Clogged water drain system clogged drain pump or faulty float switch Replace ...

Page 138: ...be checked prior to changing the indoor unit PCB To check the thermistors proceed as follows 1 Disconnect the thermistor from the indoor unit PCB 2 Read the temperature and the resistance value 3 Check if the measured values correspond with the values in the table of thermistor resistance check C4 Indoor heat exchanger thermistor 1 liquid pipe R2T C5 Indoor heat exchanger thermistor 2 R3T C9 Room ...

Page 139: ...ons The remote controller thermistor is disconnected or shorted while the unit is running Supposed Causes Defective thermistor Broken wire Troubleshooting To delete the record of error codes press ON OFF button for 4 seconds or more while the error code is displayed in the inspection mode Replace the remote controller External factor other than equipment malfunction for example noise etc NO YES R2...

Page 140: ...r caused by noise Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Is SS1 of both remote controllers set to MAIN NO NO YES YES NO Replace the indoor unit PCB control PCB Set one remote controller to SUB turn the power supply off once and then back on There is possibility of malfunction caused by noise Check the surro...

Page 141: ...ng 1 remote controller Connection of 2 SUB remote controllers when using 2 remote controllers Defective remote controller PCB Troubleshooting Is SS1 of remote controller PCB set to SUB Turn the power off and then back on If a malfunction occurs replace the remote controller PCB Turn the power off and then back on If a malfunction occurs replace the remote controller PCB Set one remote controller t...

Page 142: ...emote controller correctly YES YES NO YES Remove the jumper NO YES Set the field setting correctly YES NO NO NO Blink R22125 Is the remote controller connected to one or more indoor units Is the remote controller wiring jumped between indoor units Is the field setting correct Do the service monitors of all the indoor units blink Are the wirings between indoor unit and outdoor unit correctly connec...

Page 143: ...onditions Refrigerant shortage detection The following conditions continue for 7 minutes Input current A output frequency B Output frequency C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of the discharge pipe thermistor indoor or outdoor heat exchanger thermistor room or outdoor temperature t...

Page 144: ...stop valve Repair the pipe flare or replace the union Check the pipes for improper contact and correct them as required Replace the cracked pipe Check the power transistor harness for loosening Correct it as required Also replace the cracked pipe Replace the electronic expansion valve Replace the defective thermistor s Completed Refrigerant shortage error again Oil oozing at internal piping Stop v...

Page 145: ...uit is below 196 V for 0 1 second If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcomputer The compressor stops if the error occurs and restarts automatically after 3 minute standby Supposed Causes Power supply voltage is ...

Page 146: ...k the power supply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Replace the indoor unit PCB control PCB Turn on the power System restarted Repeat a few times Error again within 3 minutes after turning on the power Loose or disconnected NO...

Page 147: ...or check after the memory was cleared Supposed Causes The wiring error switch SW3 may have been pressed for 10 seconds or more and the memory may have been deleted The unit cannot be operated unless wiring error check is executed Troubleshooting Refer to Wiring Error Check Function on page 185 for details R22429 Caution NO YES Wiring error check executed Conduct wiring error check Wiring error che...

Page 148: ...e data sent from the PM1 can not be received for 9 seconds The error counter is reset when the data from the PM1 can be successfully received Supposed Causes Defective outdoor unit PCB Troubleshooting R21808 Caution YES NO Turn off the power Then turn on the power to restart the system Error again The cause can be an external factor other than the malfunction Observe the operating condition in lon...

Page 149: ...nd outdoor units Supposed Causes Anti icing function in other rooms Power supply voltage is not as specified Wrong models interconnected Wrong indoor unit PCB or outdoor unit PCB mounted Troubleshooting Refer to Anti icing control for indoor unit on page 145 for details R18424 Caution NO YES NO YES NO YES Check the model combination Check the combination of all the models being connected The anti ...

Page 150: ...ermistor that are located in a shut down room Error Decision Conditions In cooling operation the both conditions A and B are met for 5 minutes A Room temperature Indoor heat exchanger temperature 10 C B Indoor heat exchanger temperature 1 C If the error repeats the system is shut down Reset condition 3 minute standby is over and the indoor heat exchanger temperature is above 0 C Supposed Causes Wr...

Page 151: ...ve or coil Replace the outdoor heat exchanger thermistor Replace the room temperature thermistor Replace the room temperature thermistor or indoor heat exchanger thermistor Do the vacuum drying Replace the indoor unit PCB control PCB and then start the wiring error check function Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check the wi...

Page 152: ...r is in abnormal running order Supposed Causes Defective outdoor unit PCB Noise Momentary drop of voltage Momentary power failure Troubleshooting R21809 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged YES NO NO YES Replace the outdoor unit PCB main PCB Ground the system The cause can be external factors other than malfunction Inves...

Page 153: ... Conditions If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of discharge pipe thermistor Defective discharge pipe thermistor Disconnection of connector S40 Disconnection of 2 terminals of OL Q1L Defective OL Q1L Broken OL harness Defective electronic expansion valve or coil Defective outdoor unit...

Page 154: ...ace the electronic expansion valve or the coil Discharge pipe thermistor disconnected Check No 12 Check the electronic expansion valve Replace the OL Q1L Replace the OL harness Connect the connector S40 properly Is the connector S40 properly connected Check No 01 Check the discharge pipe thermistor Check the resistance between the 2 terminals on connector S40 Check the resistance between the 2 ter...

Page 155: ...xpansion valve Troubleshooting Check No 12 Refer to P 172 Check No 15 Refer to P 173 Turn off the power Disconnect the harnesses U V and W R21163 Caution NO YES YES NO NO YES Check No 15 Check with the inverter analyzer Turn off the power and reconnect the harnesses Turn on the power again and restart the system Precaution before turning on the power again Make sure the power has been off for at l...

Page 156: ...sed Causes Disconnection of the fan motor Foreign matter stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 175 R20416 Caution YES YES NO YES NO NO YES NO Turn on the power Rotate the fan Turn off the power and reconnect the connector Remove the foreign matters Replace the outdoor fan motor Replace the outdoor unit PCB main PCB Replace the outdoo...

Page 157: ...efer to P 176 Check No 18 Refer to P 176 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrupted by an input overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again R21863 NO YES YES NO Start operat...

Page 158: ... heat exchanger thermistor or outdoor temperature thermistor Defective electronic expansion valve or coil Refrigerant shortage Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 169 Check No 12 Refer to P 172 Check No 14 Refer to P 173 A C B C 50 65 80 class 120 102 90 class 120 107 R20525 Caution NG OK OK OK NG NG Discharge pipe therm...

Page 159: ...c expansion valve or coil Defective outdoor heat exchanger thermistor Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 169 Check No 12 Refer to P 172 R20418 Caution Replace the outdoor fan motor Reconnect the connector or fan motor lead wires Replace the stop valve Replace the outdoor heat exchanger thermistor Replace the outdoor unit PCB main PCB Replace the electronic expansion ...

Page 160: ...Troubleshooting for Outdoor Unit SiSG121917E 155 Part 6 Service Diagnosis Reference Reference Reference Check No 17 Refer to P 176 Check No 18 Refer to P 176 Check No 19 Refer to P 177 ...

Page 161: ...orced cooling operation Supposed Causes Abnormal operation due to air intrusion Defective discharge pipe thermistor Troubleshooting Check No 01 Refer to P 169 YES R23655 NO OK NG Caution Replace the outdoor unit Replace both the discharge pipe thermistor and the outdoor unit PCB main PCB Replace the outdoor unit Abnormal deformation of piping in the outdoor unit Check No 01 Check the discharge pip...

Page 162: ...nnect the reactor properly R20419 NO YES Connect the compressor properly NO YES Replace the reactor NO YES Replace the compressor or the compressor relay harness Restart the operation again and if the error occurs again replace the outdoor unit PCB main PCB NO YES Disconnect the reactor from the outdoor unit PCB and measure the resistance value between reactor terminals with multimeter Disconnect ...

Page 163: ...d Causes Disconnection of the compressor relay cable Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is outside the specified range Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO YES Turn off the power Check the power supply voltage Correct the power...

Page 164: ... Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB main PCB Correct the power supply or replace the outdoor unit PCB main PCB Replace the compressor Reconnect the electrical components or compressor harnesses as specified Inverter analyzer...

Page 165: ...pressor running frequency and CT detected input current Error Decision Conditions The compressor running frequency is more than A Hz and input current is less than B A If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective power module Broken or disconnected wiring Defective reactor Defective outdoor unit P...

Page 166: ...er again and restart operation Check No 15 Check with the inverter analyzer Inverter analyzer RSUK0917C 100 50 Voltage within the allowable range Power supply voltage 15 Replace the outdoor unit PCB main PCB Check the power supply voltage Replace the outdoor unit PCB main PCB Replace the outdoor unit PCB main PCB Replace the compressor Capacitor charged when the indoor unit or outdoor unit main re...

Page 167: ...ds of the thermistor is above 4 96 V or below 0 04 V with the power on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature The system is shut down if all the units are judged as the J8 error Supposed Causes Disconnection of the connector for the thermistor Thermistor corresponding to the error code is defective Defective heat exchanger thermistor in th...

Page 168: ...ormal Reconnect the connectors or thermistors J3 error The discharge pipe temperature is lower than the heat exchanger temperature Replace the defective thermistor s Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Gas pipe thermistors Cooling Outdoor heat exchanger thermistor Replace the outdoor unit PCB main PCB Error displayed again on remote controller...

Page 169: ... thermistor Disconnection of connector Defective outdoor unit PCB Troubleshooting Check No 17 Refer to P 176 Check No 19 Refer to P 177 A C B C C C 50 65 80 class 90 70 80 90 class 110 75 88 Caution WARNING To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when the radiation fin temperature drops below B C R22957 YES NO YES NG NO ...

Page 170: ...connector Defective outdoor unit PCB Silicone grease is not applied properly on the radiation fin after replacing the outdoor unit PCB Troubleshooting Check No 17 Refer to P 176 A C B C 50 65 80 class 90 84 90 class 100 90 Caution Turn off the power Then turn on the power to restart the system Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damage...

Page 171: ...SiSG121917E Troubleshooting for Outdoor Unit Part 6 Service Diagnosis 166 Reference Note Check No 19 Refer to P 177 Refer to Silicone Grease on Power Transistor Diode Bridge on page 203 for details ...

Page 172: ...outdoor unit PCB Defective compressor Troubleshooting R24911 Caution NO YES NO YES An output overcurrent may result from wrong internal wiring If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again Check No 17 Check No 15 Turn off the power and disconnect the harnesses U V and W Turn off the power The...

Page 173: ...econnect the harnesses Turn on the power again and start operation Check the power supply voltage Check the power module Correct the power supply Replace the compressor Correct the power supply or replace the outdoor unit PCB main PCB Replace the outdoor unit PCB main PCB Any LED off Normal Short circuit or wire breakage between compressor s coil phases Check the discharge pressure Go to Check No ...

Page 174: ...stor as ASSY Multimeter Resistance range Thermistor ASSY Soldered thermistor Multimeter Thermistor temperature C Type A Type B R 25 C 20 kΩ B 3950 K R 25 C 10 kΩ B 3435 K 20 197 8 73 4 15 148 2 57 0 10 112 1 44 7 5 85 60 35 3 0 65 93 28 2 5 51 14 22 6 10 39 99 18 3 15 31 52 14 8 20 25 02 12 1 25 20 00 10 0 30 16 10 8 2 35 13 04 6 9 40 10 62 5 8 45 8 707 4 9 50 7 176 4 1 Thermistor Resistance Type ...

Page 175: ...ween the pins 2 3 Rotation pulse check 1 Check the connector for connection 2 Turn the power on and stop the operation 3 Check if the Hall IC generates the rotation pulse 4 times when the fan motor is manually rotated once between the pins 1 3 R6000090 A measurement error might occur in the resistance value depending on the measurement conditions and the method U V V W Resistance Wall mounted 25 3...

Page 176: ...nector connected check the following 1 Output voltage of about 5 V between pins 1 and 3 2 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating If NG in step 1 Defective PCB Replace the PCB control PCB If NG in step 2 Defective Hall IC Replace the fan motor If OK in both steps 1 and 2 Replace the PCB control PCB Measuring points Judgement White Blue 1 M or more Orange Blue 10...

Page 177: ...ere is no continuity between the pins the EV coil is faulty 4 If no EV generates latching sound in the step 2 above the outdoor unit PCB is faulty 5 If the continuity is confirmed in the step 3 above mount a good coil which generated latching sound in the EV unit that did not generate latching sound and check to see if that EV generates latching sound If latching sound is generated the outdoor uni...

Page 178: ...Step 2 Install an inverter analyzer instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work Close Cooling The problem unit does not cool the room Only the problem unit is in operation the unit starts pump down The low pressure of the unit becomes vacuum Abnormal discharge pipe temperat...

Page 179: ...power module Refer to Check No 22 3 If NG in Check No 22 replace the power module Replace the main PCB The power module is united with the main PCB If OK in Check No 22 check if there is any solder cracking on the PCB 4 If any solder cracking is found replace the PCB or repair the soldered section If there is no solder cracking replace the PCB 1 When the output frequency is low the LEDs blink slow...

Page 180: ...e between the pins 4 2 is 0 15 VDC 5 Keep operation off and power off Connect the connector S70 6 Check whether 4 pulses 0 15 VDC are output at the pins 4 1 when the fan motor is rotated 1 turn by hand When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB main PCB If NG in step 4 Defective Hall IC Replace the outdoor fan ...

Page 181: ...or heat exchanger very dirty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor temperature The outdoor temperature should be within the operation range R24913 YES YES YES NO NO NO Is the air filter or indoor outdoor heat exchanger dirty Is the connection pipe d...

Page 182: ...erring to the table below If the resistance is or less than 1 k short circuit occurs on the main circuit 50 65 80 class R21195 YES NO NO YES Outdoor fan system is functioning Check the outdoor fan system Reconnect the connector Is the outdoor fan running Fan motor lead wire connector disconnected Go to Check No 16 Positive terminal of digital multimeter 2 3 4 2 3 1 Negative terminal of digital mul...

Page 183: ...ing of the model in question Be careful never to touch any live parts 50 65 80 class To prevent electrical shock use a multimeter to check that the voltage between P and N is 50 V or less The surface of the test points P N may be covered with the coating Be sure to make firm contact between the multimeter probes and the test points R21123 Multimeter 1 2 3 4 R22622 Multimeter DC voltage range DC FU...

Page 184: ...ng Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Follow the procedure below to measure resistance between the or terminal of the power module and the U V or W terminal of the compressor with a multimeter Evaluate the measurement results referring to the following table FU2 DC_N2 R21124 Multimeter DC voltage ra...

Page 185: ...SiSG121917E Check Part 6 Service Diagnosis 180 50 65 80 class 90 class V U DC DC R22378 W R21130 W V U DCP2 DCM2 ...

Page 186: ...Wiring Error Check Function 185 4 Trial Operation 187 4 1 Indoor Unit 187 4 2 Outdoor Unit 189 5 Field Settings 191 5 1 Wall Mounted and LSP Duct Type Indoor Unit 191 5 2 MSP Duct Type Indoor Unit 193 5 3 Outdoor Unit 200 6 Silicone Grease on Power Transistor Diode Bridge 203 Part 7 Trial Operation and Field Settings ...

Page 187: ...e unit Detail 1 Remove the valve caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After A minutes close the liquid stop valve with a hexagonal wrench 4 After B minutes close the gas stop valve and stop the forced cooling operation R7000252 Refer to page 183 for forced operation A B 50 65 80 class 1 5 6 90 class 3 5 6 Gas stop valve Close Hexagonal wrenc...

Page 188: ...ce cover back on 1 screw 7 Turn on the power 8 Push the forced operation switch SW1 above the service cover Start forced cooling operation Forced cooling operation will stop automatically after about 15 minutes To stop forced cooling operation push the forced operation switch SW1 again HEAT COOL A 1 2 3 4 5 2 1 D C B A 4 3 2 1 Service monitor PCB Turn SW5 and SW6 to the OFF position 2 1 ON OFF 4 3...

Page 189: ... the forced operation switch SW1 Start forced cooling operation Forced cooling operation will stop automatically after about 15 minutes To stop forced cooling operation push the forced operation switch SW1 again S2 S502 A 1 2 3 4 5 HEAT COOL OFF ON ON OFF 1 2 3 4 5 Forced operation switch SW1 Service monitor PCB ON OFF 5 4 3 2 1 Do not set any of the switches to ON Check that these switches are al...

Page 190: ...impossible The LED indicators blink all at the same time Transmission failure occurs at any of the indoor units The 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 stays on Details Wiring error check is realized by feeding refrigerant one by one through each piping port ...

Page 191: ... connected liquid and gas pipes cannot be self corrected Be sure to make the liquid pipe and the gas pipe in pairs 2 To cancel the wiring error check procedure halfway press the wiring error check switch again In this case the memory of the microcomputer returns to its initial status Room A wiring Port A piping Room B wiring Port B piping 3 When replacing the outdoor unit PCB be sure to use this f...

Page 192: ...ration is disabled for 3 minutes after the system has been turned off 4 After trial operation is complete set the temperature to a normal level 26 C to 28 C When operating the air conditioner in cooling operation in winter set it to the trial operation mode using the following method Procedure With ARC466 Series Remote Controller 1 Press On Off button to turn on the system 2 Press the center of Te...

Page 193: ...t 30 minutes and switches into normal mode To quit a trial operation press ON OFF button With BRC086A22 Remote Controller 1 Completely open the stop valve on gas side 2 Completely open the stop valve on liquid side 3 Set to cooling or heating operation using the remote controller and then start the operation by pressing ON OFF button 4 Press INSPECTION button 2 times and let the operation continue...

Page 194: ...ing the air conditioner in COOL operation in winter activate trial operation mode by following the instructions in the installation manual for the indoor unit The air conditioner draws a small amount of power in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption If the circuit breaker trips to sh...

Page 195: ...ed Water leakage System is properly earthed Electrical leakage The electric wires are connected correctly Incomplete cooling function The wiring conforms with the specifications No operation or burn damage Indoor or outdoor unit s air inlet or air outlet are unobstructed Incomplete cooling function Stop valves are opened Incomplete cooling function The wiring and piping marks for each indoor unit ...

Page 196: ... button The indoor unit operation lamp will blink for about 1 minute 4 Press the indoor unit ON OFF switch while the operation lamp is blinking If setting could not be carried out completely while the operation lamp was blinking carry out the setting process once again from the beginning After setting is complete pressing Mode button for about 5 seconds will cause the remote controller to return t...

Page 197: ...f you cut a jumper unintentionally Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them 5 1 2 Jumper and Switch Settings For the location of the jumpers refer to the following pages FDKS Series page 32 1 2 3 R22633 JA JB JC ADDRESS JA EXIST CUT 1 2 ADDRESS R6573 ADDRESS EXIST CUT 1 2 Jumper Function Jumper on indoor unit PCB When connected factory settin...

Page 198: ... for each optional accessory Procedure With BRC086A22 Remote Controller 1 When in the normal mode press INSPECTION button for 4 seconds or more and the FIELD SET MODE is entered 2 Select the desired MODE NO with MODE button 3 Press FAN button and BACK LIGHT button and select the FIRST CODE NO 4 Press TEMP button and select the SECOND CODE NO 5 Press RESERVE button and the present settings are SET ...

Page 199: ...for when filter contamination is a lot and spacing time of display time to clean air filter is to be halved a little light approx 2 500 hours a lot heavy approx 1 250 hours 3 Spacing time of display time to clean air filter count Use Without indication setting when cleaning indication is not necessary such as the case of periodical cleaning being carried out With indication Display Without Indicat...

Page 200: ... unit AirNet Address 1 3 Press Menu Enter button Field settings screen In the case of individual setting per indoor unit In the case of group setting 3 4 5 Unit No 0 1 01 5 9 2 02 6 3 01 7 Field settings 0 01 4 8 Return Setting Mode 20 3 5 Mode 10 Unit No 0 1 5 9 2 6 3 7 Field settings 0 01 4 8 Return Setting Press Menu Enter button FIRST CODE NO SECOND CODE NO Select Field settings in the Service...

Page 201: ...asic screen returns Setting confirmation Mode No First Code No Description of setting Second Code No 01 02 03 04 10 20 0 Filter Contamination Heavy Light Setting for spacing time of display time to clean air filter Ultra longlife filter Light Approx 10 000 hrs Heavy Approx 5 000 hrs Longlife filter Approx 2 500 hrs Approx 1 250 hrs Standard filter Approx 200 hrs Approx 100 hrs 1 Long life filter t...

Page 202: ...hold Mode button for 4 seconds or longer to set When the display is changed from Main RC to Sub RC the setting is completed 2 Basic screen is displayed The remote controllers are factory set to MAIN so you only have to change one remote controller from MAIN to SUB Sub remote controller 1 1 Basic screen 2 Basic screen 2 Set temperature Fan Set temperature Fan Main remote controller Off reminder Tim...

Page 203: ...he MAIN SUB setting switch SS1 on the signal receiver PCB to SUB Set the address setting switch SS2 on the signal receiver PCB according to the table below Wireless Remote Controller Setting Factory Set is 1 1 Open the cover on the display of the wireless remote controller 2 Press FILTER SIGN RESET button and INSPECTION button at the same time for 4 seconds or more to go into the FIELD SETTING mod...

Page 204: ...oor Unit Display on remote controller Behavior to the remote controller operation when the functions are restricted as by an external control Other than the left A Standard factory set All items displayed Accepts the functions except restricted Sounds one long beep or 3 short beeps There may be a difference from the indoor unit status with remote controller display Accepts all items transmitted So...

Page 205: ...y room unit is received The operation mode of the priority room unit has precedence Cancellation of control Example The control function is canceled when the POWERFUL operation mode is switched off or 20 minutes elapse after POWERFUL operation started 50 65 80 class 90 class R1396 Living room Living room A room A room B room B room C room C room Normal operation When inverter powerful operation is...

Page 206: ...the neighbors However if NIGHT QUIET mode is running cooling capacity is reduced Details Slide the SW6 1 SW5 5 to the ON side 5 3 3 Limitation Setting for Input Current Outline You can select an upper limit for the input current Use the operation mode switch SW2 and the NIGHT QUIET mode setting switch SW6 1 or SW5 5 to set the upper limit 50 65 80 class 90 class Service monitor PCB HEAT COOL A 1 2...

Page 207: ...he outdoor unit at the same time and holding them for 5 seconds while the compressor is stopped The LEDs are lit in turn for 15 seconds to show the ECONO mode status The factory setting is effective Unit limit 50 65 80 class 90 class SW2 SW6 1 SW2 SW5 5 Without limit factory set R7000259 11 0 A R7000259 8 5 A R7000261 HEAT COOL R22671 ON OFF 1 2 R22639 R22673 H E A T C O O L ON OFF 1 2 3 4 5 HEAT ...

Page 208: ...ode bridge Details 1 Wipe off the old silicone grease completely 2 Apply the silicone grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diode bridge 4 Make sure that the heat radiation parts are firmly contacted to the radiation fin Note Smoke emission may be caused by bad heat radiation when the silicone grease is not appropriately ...

Page 209: ...SiSG121917E Part 8 Appendix 204 1 Piping Diagrams 205 1 1 Indoor Unit 205 1 2 Outdoor Unit 206 2 Wiring Diagrams 209 2 1 Indoor Unit 209 2 2 Outdoor Unit 215 3 Operation Limit 218 Part 8 Appendix ...

Page 210: ...ms SiSG121917E 205 Part 8 Appendix 1 Piping Diagrams 1 1 Indoor Unit 1 1 1 Wall Mounted Type CTKS25 35TVMG CTKB25 35TVMG CTKS50TVMG CTKB50TVMG CTKS60TVMG CTKB60TVMG CTKS71TVMG 4D104482 4D095915D 4D104484A 4D104483A ...

Page 211: ...ype 1 2 Outdoor Unit MKS50TVMG MKB50TVMG FDKS25 35EAVMB FDKS25 35CAVMB FDKS50 60CVMB FDMR50 60 71TVMG C 4D045449X FDKS25EAVMB FDKS35EAVMB 9 5 12 7 FDKS25CAVMB FDKS50CVMB FDKS60CVMB FDKS35CAVMB MODEL MODEL 4D112974A FDMR50 60TVMG 6 4 FDMR71TVMG MODEL 15 9 12 7 6 4 3D109946 ...

Page 212: ...Piping Diagrams SiSG121917E 207 Part 8 Appendix MKS65TVMG MKB65TVMG MKS80TVMG 3D103941A 3D103942A ...

Page 213: ...SiSG121917E Piping Diagrams Part 8 Appendix 208 MKS90TVMG 3D104086 ...

Page 214: ...agrams 2 1 Indoor Unit 2 1 1 Wall Mounted Type CTKS25 35 50TVMG A1P Control PCB A2P Display signal receiver PCB A3P INTELLIGENT EYE sensor PCB A4P Adaptor PCB A5P Wireless LAN adaptor PCB Refer to page 27 for Printed Circuit Board Connector Wiring Diagram 3D123222A ...

Page 215: ...dix 210 Note CTKS60 71TVMG A1P Filter PCB A2P Control PCB A3P Display signal receiver PCB A4P INTELLIGENT EYE sensor PCB A5P Adaptor PCB A6P Wireless LAN adaptor PCB Refer to page 29 for Printed Circuit Board Connector Wiring Diagram 3D123223 ...

Page 216: ...s SiSG121917E 211 Part 8 Appendix Note CTKB25 35 50TVMG PCB1 Control PCB PCB2 Display signal receiver PCB PCB3 INTELLIGENT EYE sensor PCB Refer to page 27 for Printed Circuit Board Connector Wiring Diagram 3D090968C ...

Page 217: ...Diagrams Part 8 Appendix 212 Note CTKB60TVMG PCB1 Filter PCB PCB2 Control PCB PCB3 Display signal receiver PCB PCB4 INTELLIGENT EYE sensor PCB Refer to page 29 for Printed Circuit Board Connector Wiring Diagram 3D098073B ...

Page 218: ...21917E 213 Part 8 Appendix Note 2 1 2 LSP Duct Type FDKS25 35EAVMB FDKS25 35CAVMB FDKS50 60CVMB PCB1 Control PCB PCB2 Display signal receiver PCB Refer to page 32 for Printed Circuit Board Connector Wiring Diagram 3D045012P ...

Page 219: ...SiSG121917E Wiring Diagrams Part 8 Appendix 214 Note 2 1 3 MSP Duct Type FDMR50 60 71TVMG A1P Control PCB A2P Indoor fan PCB Refer to page 34 for Printed Circuit Board Connector Wiring Diagram 3D112629A ...

Page 220: ...ring Diagrams SiSG121917E 215 Part 8 Appendix Note 2 2 Outdoor Unit MKS50TVMG MKB50TVMG PCB1 Main PCB PCB2 Service monitor PCB Refer to page 38 for Printed Circuit Board Connector Wiring Diagram 3D108779A ...

Page 221: ...SiSG121917E Wiring Diagrams Part 8 Appendix 216 Note MKS65 80TVMG MKB65TVMG PCB1 Main PCB PCB2 Service monitor PCB Refer to page 38 for Printed Circuit Board Connector Wiring Diagram 3D095876D ...

Page 222: ...Wiring Diagrams SiSG121917E 217 Part 8 Appendix Note MKS90TVMG PCB1 Main PCB PCB2 Inverter PCB PCB3 Service monitor PCB Refer to page 40 for Printed Circuit Board Connector Wiring Diagram 3D078236C ...

Page 223: ...SiSG121917E Operation Limit Part 8 Appendix 218 3 Operation Limit MKS50 65 80 90TVMG MKB50 65TVMG 4D078793B ...

Page 224: ... will be used This statement does not purport to exclude restrict or modify the application of any local legislation z z Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion z z Use only those parts and accessories supplied or specified by Daikin...

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