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Si12-411A

Main Functions

Function and Control

75

1.3

Fan Speed Control

 for Indoor Units

Control Mode

The airflow rate can be automatically controlled depending on the difference between the set 
temperature and the room temperature. This is done through phase control and 

hall IC

 control. 

For more information about hall IC, refer to the troubleshooting for fan motor on page 174.

Phase Steps

Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H and HH.

= Within this range the airflow rate is automatically controlled when the FAN setting 

button is set to automatic.

Note:

1. During powerful operation, fan operates H tap + 50 - 90 rpm.
2. Fan stops during defrost operation.

Automatic Air 
Flow Control for 
Heating

The following drawing explains the principle for fan speed control for heating:

Automatic Air 
Flow Control for 
Cooling

The following drawing explains the principle of fan speed control for cooling:

Step

Cooling

Heating

Dry mode

LLL (Heating thermostat OFF)

20 · 25 · 35kW class : 
500 - 860 rpm
(During powerful operation :
850 - 910 rpm)
50 · 60 · 71kW class : 
750 - 1000 rpm
(During powerful operation :
1050 rpm)

LL (Cooling thermostat OFF)

SL (Silent)

L

ML

M

MH

H

HH (Powerful)

(R2818)

(R2818)

-1.5˚C

-0.5˚C

-1˚C

-2˚C

L

ML

M

Thermostat

setting

temperature

Phase control

Difference between room 

and set temperature

fan speed

(R2819)

+1.5˚C

+0.5˚C

+2˚C

+1˚C

M

ML

L

fan speed

Difference between room 

and set temperature

Phase control

Thermostat

setting

temperature

(R2820)

Содержание FTKE25BVM

Страница 1: ...C Series Applied Models zInverter Multi Cooling Only zInverter Multi Heat Pump Si12 411A...

Страница 2: ...4MKD90BVMA 4MKS58BVMB 8 3MKD75BVM 4MKS75BVMB 4MKD75BVM 4MKS90BVMB 4MKD90BVM zHeat Pump Indoor Unit FTXE25BVMA FTXS20CVMB 9 FLXS25BVMB FTXS25BVMA FTXE35BVMA FTXS25CVMB 9 8 FLXS35BVMB FTXS35BVMA FTXD50...

Страница 3: ...Standing Type 66 1 6 Outdoor Units 69 Part 4 Function and Control 71 1 Main Functions 72 1 1 Frequency Principle 72 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing 74 1 3 Fan Speed Con...

Страница 4: ...and Cleaning 149 2 14 Troubleshooting 159 Part 6 Service Diagnosis 163 1 Caution for Diagnosis 164 1 1 Troubleshooting with the Operation Lamp 164 2 Problem Symptoms and Measures 166 3 Service Check F...

Страница 5: ...Motor 232 1 6 Removal of Electronic Expansion Valve and Thermistor 234 1 7 Removal of Sound Insulation and Reactor 235 1 8 Removal of Shunt 237 1 9 Removal of Solenoid Valve and Four Way Valve 238 1...

Страница 6: ...Si12 411A Table of Contents v Index i Drawings Flow Charts v...

Страница 7: ...Si12 411A vi Table of Contents...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 12: ...Si12 411A 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...

Страница 13: ...eliability Durability Auto Restart after Power 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 Trea...

Страница 14: ...lity Auto Restart after Power 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...

Страница 15: ...Restart after Power 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 Excha...

Страница 16: ...er 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 Cont...

Страница 17: ...ability Auto Restart after Power 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 Outdo...

Страница 18: ...Reliability Durability Auto Restart after Power 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 Tr...

Страница 19: ...y Durability Auto Restart after Power 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...

Страница 20: ...r Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 1 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort Con...

Страница 21: ...ability Auto Restart after Power 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 Outdo...

Страница 22: ...lity Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 1 1 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outd...

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

Страница 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...

Страница 25: ...o Restart after Power 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 Exc...

Страница 26: ...er Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display 1 1 3 D Airflow Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Comfort...

Страница 27: ...rt after Power 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...

Страница 28: ...Si12 411A 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...

Страница 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...

Страница 30: ...rd 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 Cont...

Страница 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...

Страница 32: ...rd 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 Cont...

Страница 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...

Страница 34: ...vable 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 Microcomp...

Страница 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...

Страница 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...

Страница 37: ...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 VP2...

Страница 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...

Страница 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...

Страница 40: ...g 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 9 5...

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

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

Страница 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 H W D mm 942 926 394 Weight kg 66 Gross Weight kg 77 Operation Sound dBA 48 Piping Connec...

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

Страница 45: ...D mm 735 936 300 735 936 300 Packaged Dimensions H W D mm 784 960 357 784 960 357 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...

Страница 46: ...6 300 908 900 320 Packaged Dimensions H W D mm 784 960 357 942 926 394 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...

Страница 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...

Страница 48: ...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 2 9...

Страница 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...

Страница 50: ...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 4 97 6...

Страница 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...

Страница 52: ...n Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D046602 3D046603 Model FTXS50BVMA 8 FTXS60BVMA 8 Cooling Heating Cooling Heating Rated Capacity 5 0kW Class 6 0kW Class Front Panel Co...

Страница 53: ...ontal 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 Dimensions...

Страница 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...

Страница 55: ...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 O...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 60: ...s 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 Connec...

Страница 61: ...Horizontal 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 99 4 92...

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

Страница 63: ...D mm 735 936 300 735 936 300 Packaged Dimensions H W D mm 784 960 357 784 960 357 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...

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

Страница 65: ...936 300 Packaged Dimension H W D mm 784 990 400 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...

Страница 66: ...W D mm 735 936 300 908 900 320 Packaged Dimensions H W D mm 784 960 357 1 025 926 388 Weight kg 59 73 Gross Weight kg 63 80 Operation Sound dBA 48 49 48 49 Sound Power dBA 61 62 61 62 Piping Connectio...

Страница 67: ...Specifications Si12 411A 56 Specifications...

Страница 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...

Страница 69: ...to 5 rooms 5 S26 Connector for signal receiver PCB 6 S27 Connector for control PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for INTELLIGENT EYE Sensor PCB 1 V1 Varistor 2 JA Addr...

Страница 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 2 Signal...

Страница 71: ...Printed Circuit Board Connector Wiring Diagram Si12 411A 60 Printed Circuit Board Connector Wiring Diagram PCB Detail...

Страница 72: ...9 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 Connector for display PCB 1...

Страница 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...

Страница 74: ...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 Varistor 2 JA Address setting jumper JB Fan sp...

Страница 75: ...control PCB 6 S26 Connector for signal receiver PCB 7 S31 Connector for room temperature thermistor 8 S32 Connector for heat exchanger thermistor 9 S37 Connector for power supply PCB 1 V1 Varistor 2 J...

Страница 76: ...Si12 411A 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...

Страница 77: ...S26 Connector for power supply PCB 1 6 S202 S204 S8 Connector for control PCB 2 7 S25 Connector for display PCB 3 8 S301 S302 Connector for fan motors 1 V1 Varistor 2 JA Address setting jumper JB Fan...

Страница 78: ...Si12 411A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 67 Power Supply PCB PCB 1...

Страница 79: ...Printed Circuit Board Connector Wiring Diagram Si12 411A 68 Printed Circuit Board Connector Wiring Diagram Control PCB PCB 2 Display PCB PCB 3 Signal Receiver PCB PCB 4...

Страница 80: ...S22 Connector for electronic expansion valve 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 Conn...

Страница 81: ...Printed Circuit Board Connector Wiring Diagram Si12 411A 70 Printed Circuit Board Connector Wiring Diagram...

Страница 82: ...Function of Main Structural Parts 85 2 1 Main Structural Parts 85 2 2 Function of Thermistor 86 3 Control Specification 90 3 1 Mode Hierarchy 90 3 2 Frequency Control 91 3 3 Controls at Mode Changing...

Страница 83: ...e explains 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...

Страница 84: ...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...

Страница 85: ...mfortable 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...

Страница 86: ...erates H tap 50 90 rpm 2 Fan stops during defrost operation Automatic Air Flow Control for Heating The following drawing explains the principle for fan speed control for heating Automatic Air Flow Con...

Страница 87: ...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...

Страница 88: ...er 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 Heating Cooling switching point Room temperat...

Страница 89: ...ht Set circuit continues heating or cooling the room at the set temperature for the first one hour then automatically raises the temperature setting slightly in the case of cooling or lowers it slight...

Страница 90: ...microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature sifted 2 C from the set temperature Cooling 2 C higher Dry 1...

Страница 91: ...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...

Страница 92: ...d the function becomes effective when the operation is started If this button is pressed in powerful operation the powerful operation is reset and this function becomes effective The HOME LEAVE button...

Страница 93: ...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...

Страница 94: ...is button 1 10 4 Photocatalytic Deodorizing Filter Photocatalytic Deodorizing Filter demonstrates powerful oxidation characteristics when subjected to harmless ultraviolet light Photocatalytic deodori...

Страница 95: ...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...

Страница 96: ...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...

Страница 97: ...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...

Страница 98: ...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...

Страница 99: ...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...

Страница 100: ...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...

Страница 101: ...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...

Страница 102: ...t a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipes Low Hz high pressure peak cutting freeze u...

Страница 103: ...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...

Страница 104: ...ion stopped Detail 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...

Страница 105: ...top zone the compressor operation stops If a drooping current is continues for 1 0 second after rushing on the drooping zone the frequency will be 2 Hz drooping Repeating the above drooping continues...

Страница 106: ...ec from changing number of operation room Control in Each Zone 3 7 Heating Peak cut Control Outline Heat Pump Only During heating operation the signals being sent form the indoor unit allow the operat...

Страница 107: ...urned 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 fan tap must be set to L 2 When Heating Ope...

Страница 108: ...inutes of accumulated time pass since the start of the operation or ending the defrosting Conditions for Canceling Defrost The target heat exchanger temperature as the canceling condition is selected...

Страница 109: ...is fully closed 1 Electronic expansion valve is fully closed when turning on the power 2 Pressure equalizing control Room Distribution Control 1 Gas pipe isothermal control 2 SC control Only for Heat...

Страница 110: ...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...

Страница 111: ...be 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 valv...

Страница 112: ...mperature difference between the maximum heat exchanger temperature of connected room and the temperature of liquid pipe thermistor becomes constant 3 12 10 Disconnection of the Discharge Pipe Thermis...

Страница 113: ...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...

Страница 114: ...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...

Страница 115: ...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 prohibited zon...

Страница 116: ...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...

Страница 117: ...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...

Страница 118: ...om can be set as the priority 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...

Страница 119: ...ing to only heat H Short circuit pins 1 and 3 of the connector S15 Setting to only cool C short circuit pins 3 and 5 of the connector S15 The following specifications apply to the connector housing an...

Страница 120: ...autions 112 2 3 Names of Parts 114 2 4 Preparation before Operation 126 2 5 AUTO DRY COOL HEAT FAN Operation 129 2 6 Adjusting the Air Flow Direction 131 2 7 POWERFUL Operation 137 2 8 OUTDOOR UNIT SI...

Страница 121: ...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...

Страница 122: ...0AVMA Read before Operation Safety Precautions 112 112 112 112 Names of Parts 114 117 120 123 Preparation before Operation 126 126 126 126 Operation AUTO DRY COOL HEAT FAN Operation 129 129 129 129 Ad...

Страница 123: ...gerant check the content of the repairs with our service staff Do not attempt to install the air conditioner by your self Incorrect work will result in water leakage electric shocks or fire For instal...

Страница 124: ...e Incomplete draining may cause wetting of the building furniture etc Do not operate the air conditioner with wet hands Do not wash the indoor unit with excessive water only use a slightly wet cloth D...

Страница 125: ...Instruction Si12 411A 114 System Configuration 2 3 Names of Parts FTK X E 25 35 B Names of parts Indoor Unit ON OFF 1 3 4 5 6 7 9 10 11 2 14 15 16 8 12 13...

Страница 126: ...once to start operation Push once again to stop it The operation mode refers to the following table This switch is useful when the remote controller is missing 13 Operation lamp green 14 TIMER lamp Y...

Страница 127: ...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 SILENT button for OUTDOOR UNIT SILENT operation Only works...

Страница 128: ...Si12 411A Instruction System Configuration 117 FTK X D 50 60 71 B Names of parts Indoor Unit Main unit control panel 7 14 11 12 13 4 3 1 2 9 10 8 6 5 16 15...

Страница 129: ...E Operation 14 Indoor Unit ON OFF switch 2Push this switch once to start operation Push once again to stop it 2The operation mode refer to the following table 2This switch is useful when the remote co...

Страница 130: ...nce 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...

Страница 131: ...Instruction Si12 411A 120 System Configuration CDK X D 25 35 50 60 C Names of parts Indoor Unit 3 6 8 9 10 7 1 4 5 2...

Страница 132: ...peration lamp green 8 TIMER lamp yellow 9 HOME LEAVE lamp red LIghts up when you use HOME LEAVE operation 10 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop...

Страница 133: ...It changes the temperature setting 6 ON OFF button Press this button once to start operation Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN 8 S...

Страница 134: ...he ceiling 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 wa...

Страница 135: ...rt operation Push once again to stop it 2 Push the switch using an object with a sharp tip such as a pen 2 This switch is useful when the remote controller is missing 14 Signal receiver 2 It receives...

Страница 136: ...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 OUT...

Страница 137: ...me type and replace the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote controller display begin...

Страница 138: ...ach the unit 2 Fix the holder to a wall a pillar etc with the screws supplied with the holder 3 Place the remote controller in the remote controller holder ATTENTION About remote controller Never expo...

Страница 139: ...r conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditions Operation outside this humidity or temperature range may cause...

Страница 140: ...the button advances the mode setting in sequence AUTO DRY COOL HEAT FAN 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...

Страница 141: ...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...

Страница 142: ...to increase your com fort 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 pre...

Страница 143: ...on the operation mode See the figure ATTENTION Always use a remote controller to adjust the flaps angle If you attempt to move it forcibly with hand when it is swinging the mechanism may be broken Be...

Страница 144: ...n the flap have reached the desired position press SWING button once more The display will go blank The flap will stop moving To adjust the vertical blades louvers 3 Press SWING button The display wil...

Страница 145: ...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...

Страница 146: ...your com fort To 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 butto...

Страница 147: ...lected 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 move...

Страница 148: ...nctions which are not available To cancel POWERFUL operation 2 Press POWERFUL button again NOTE Notes on POWERFUL operation In COOL and HEAT mode To maximize the cooling heating effect the capacity of...

Страница 149: ...ng a multi system this function will work only when the OUTDOOR UNIT SILENT operation is set on all operated indoor units However if using priority room setting see Note for multi system This function...

Страница 150: ...time please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate 1 Press HOME LEAVE button Make sure is displayed in the remote control di...

Страница 151: ...be welcomed by a comfortably air conditioned room Push the HOME LEAVE Opera tion button again and the air con ditioner will adjust capacity to the set temperature for normal opera tion Set the unit to...

Страница 152: ...ovement To start INTELLIGENT EYE operation 1 Press SENSOR button To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again EX C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SWING SILENT SE...

Страница 153: ...tect moving objects further than 5m away Check the application range Sensor detection sensitivity changes according to indoor unit location the speed of pass ersby temperature range etc The sensor als...

Страница 154: ...rt INTELLIGENT EYE operation 1 Press SENSOR button To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again EX C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SILENT ON CANCEL OFF SWING 1...

Страница 155: ...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...

Страница 156: ...s 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 Notes When TIMER is set the present time i...

Страница 157: ...ng 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 setting for comb...

Страница 158: ...GHT QUIET Mode requires initial programming during installation Please consult your retailer or dealer for assistance NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the night...

Страница 159: ...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...

Страница 160: ...ront 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 grille at the 3 points 1 on each sides and 1 in the middle Check t...

Страница 161: ...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...

Страница 162: ...leaking from the indoor unit Stop operation and consult the ser vice 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...

Страница 163: ...er 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 front panel with the slots then push them all the way in Clos...

Страница 164: ...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...

Страница 165: ...ng 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 durin...

Страница 166: ...on 2 Clean the air filters and set them again 3 Take out batteries from the remote controller 4 Turn OFF the breaker for the room air conditioner When a multi outdoor unit is connected make sure the h...

Страница 167: ...ndicated by Operation without air filters may result in troubles as dust will accumulate inside the indoor unit CAUTION Units Don t touch the metal parts of the indoor unit If you touch those parts th...

Страница 168: ...warm 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...

Страница 169: ...be leaking from the indoor unit Stop operation and consult the ser vice shop if this is the case Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heati...

Страница 170: ...or steam 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...

Страница 171: ...lock 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 condition...

Страница 172: ...mance It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user For specialist maintenance contact the service shop where you bought the air conditioner...

Страница 173: ...Instruction Si12 411A 162 System Configuration...

Страница 174: ...5 8 Signal Transmission Error between Indoor and Outdoor Units 179 5 9 Unspecified Voltage between Indoor and Outdoor Units 180 5 10 Freeze up Protection Control 181 5 11 OL Activation Compressor Ove...

Страница 175: ...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...

Страница 176: ...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 indoor unit which the different operation mode is s...

Страница 177: ...gnosis with indoor unit LED indication 169 Diagnosis with outdoor unit LED indication 170 Some indoor units do not operate Check the type of the indoor units Check to make sure that the indoor unit ty...

Страница 178: ...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...

Страница 179: ...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...

Страница 180: ...nit A1 Indoor unit PCB abnormality 171 A5 Freeze up protection control or high pressure control heat pump model only 172 A6 Fan motor or related abnormality AC motor Wall 20 35 Duct Floor Ceiling 174...

Страница 181: ...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 205 UH Anti icing function in oth...

Страница 182: ...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...

Страница 183: ...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...

Страница 184: ...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...

Страница 185: ...n error due to faulty control PCB Troubleshooting Check No 16 Refer to P 215 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...

Страница 186: ...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...

Страница 187: ...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...

Страница 188: ...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...

Страница 189: ...relay harness or disconnected connector Detection error due to defective PCB 2 Foreign substance in blow port Troubleshooting Check No 3 Refer to P 206 Turn off the power Check No 3 Check the limit sw...

Страница 190: ...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 212 Check the outdoor unit s LED A Check the...

Страница 191: ...odels interconnected Wrong indoor unit PCB mounted Indoor unit PCB defective Wrong outdoor unit PCB mounted or defective Troubleshooting Check the indoor and outdoor unit model numbers Match the compa...

Страница 192: ...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...

Страница 193: ...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...

Страница 194: ...off valve defective Troubleshooting Check No 4 Refer to P 207 Check No 5 Refer to P 208 Check No 6 Refer to P 209 Check No 11 Refer to P 212 Insert the thermistor in position Replace the discharge pi...

Страница 195: ...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...

Страница 196: ...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...

Страница 197: ...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...

Страница 198: ...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...

Страница 199: ...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...

Страница 200: ...urn 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 Malf...

Страница 201: ...et 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 Discharge pipe...

Страница 202: ...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 213 Replace the outdoor...

Страница 203: ...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...

Страница 204: ...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 Current guideline 2 sec Time Rising with increasing frequency C...

Страница 205: ...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...

Страница 206: ...ature thermistor Replace the following thermistor z 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 swi...

Страница 207: ...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...

Страница 208: ...tion 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 z Fin thermistor NO Slightly dirty Check No 9...

Страница 209: ...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...

Страница 210: ...r 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 co...

Страница 211: ...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...

Страница 212: ...ected for part replacement for example and the system is interrupted by an output over current take the following procedure Error again NO YES NO YES Voltage as rated YES NO Short circuit or breakage...

Страница 213: ...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...

Страница 214: ...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...

Страница 215: ...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...

Страница 216: ...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...

Страница 217: ...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 7 6 5 4 3 2 1 Motor power supply volt...

Страница 218: ...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...

Страница 219: ...it PCB Replace the four way valve coil Replace the four way valve R2856 NO Four way valve coil Cooling dry No continuity Heating Continuity YES YES Four way valve coil resistance at 1500 ohms NO S80 v...

Страница 220: ...rs on the PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R25 C 20k B 395...

Страница 221: ...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...

Страница 222: ...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...

Страница 223: ...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...

Страница 224: ...e the power transistor s supply voltage is below 50 V using the tester z For the UVW make measurements at the Faston terminal on the board or the relay connector Fan motor lead wire Solenoid valve coi...

Страница 225: ...being applied 1 Stop the operation first and then the power and disconnect the connector S70 2 Make sure there is about DC 270 V between pins 4 and 7 3 With the system and the power still off reconne...

Страница 226: ...r connected check the following Output voltage of about 5 V between pins 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 faulty PCB Replace the PCB Fai...

Страница 227: ...Check Si12 411A 216 Service Diagnosis...

Страница 228: ...235 1 8 Removal of Shunt 237 1 9 Removal of Solenoid Valve and Four Way Valve 238 1 10 Removal of Compressor 240 2 Outdoor Unit 50 52 58 68 75 Class 242 2 1 Removal of Outer Panels 242 2 2 Removal of...

Страница 229: ...0 Class 1 1 Removal of Outer 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 Remo...

Страница 230: ...9 3 Unscrew 3 screws of the right panel slide it downwards and release the tabs to remove 4 The figure shows the view of piping connections 5 Unscrew 1 screw of the front right panel slide it downward...

Страница 231: ...s Si12 411A 220 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 remov...

Страница 232: ...fter turning off 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...

Страница 233: ...uch as top and front panels Match the colors 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 with screws 1 The fig...

Страница 234: ...arth wire 4 Remove 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 indi...

Страница 235: ...ion valve lead wires When 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 Procedu...

Страница 236: ...e connector 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...

Страница 237: ...0 Class Si12 411A 226 Removal 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...

Страница 238: ...hermistor so that its end comes up to the end of the 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 e...

Страница 239: ...Unit 80 90 Class Si12 411A 228 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...

Страница 240: ...10 minutes 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 boa...

Страница 241: ...Outdoor Unit 80 90 Class Si12 411A 230 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...

Страница 242: ...c expansion valve coil D port S31 To CN14 Pin 9 S32 To CN11 Pin 5 S33 To S34 Pin 10 S40 Overload relay S71 To S72 Pin 8 S80 Four way valve coil S90 Thermistor Outdoor air heat exchanger and discharge...

Страница 243: ...g off all power 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...

Страница 244: ...90 Class Removal Procedure 233 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...

Страница 245: ...he thermistor so that 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...

Страница 246: ...plies before disassembling work 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...

Страница 247: ...11A 236 Removal Procedure 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...

Страница 248: ...ten the rubber packing with double faced 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 r...

Страница 249: ...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...

Страница 250: ...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...

Страница 251: ...off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover Be careful to avoid burning the compressor terminals or the nameplate 2 Remove the overload relay 3 D...

Страница 252: ...s during 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 othe...

Страница 253: ...r 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 2 Remove 4 screws of the top pa...

Страница 254: ...bling work Step Procedure Points 1 Removing the tie wires Remove the piping in the backward direction 1 The figure shows the tie pipe connections 2 Remove the terminal board fitting screw Match the co...

Страница 255: ...the correct connector 1 Disconnect 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 con...

Страница 256: ...Procedure 245 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...

Страница 257: ...58 68 75 Class Si12 411A 246 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 St...

Страница 258: ...supplies 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...

Страница 259: ...5 Class Si12 411A 248 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...

Страница 260: ...emoval Procedure 249 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 scre...

Страница 261: ...wire connector For reassembling align mark of propeller fan with D cut section of motor shaft Mount the propeller fan while positioning Q mark to the top 1 Remove the propeller fan by removing the wa...

Страница 262: ...on Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove 5 screws of the right side panel 2 Remove 2 screws...

Страница 263: ...wer supplies before disassembling work Step Procedure 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...

Страница 264: ...sser spring Be careful 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 thermist...

Страница 265: ...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...

Страница 266: ...eful not to get yourself 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 refrige...

Страница 267: ...nd spanner Make sure there 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 compre...

Страница 268: ...Si12 411A Others 257 Part 8 Others 1 Others 258 1 1 Test Run from the Remote Controller 258 1 2 Jumper Settings 259...

Страница 269: ...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 the display...

Страница 270: ...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 Wireless remote controller Address J4 CUT EXIST 1 2 JA ADDRESS J4 ADDRESS CU...

Страница 271: ...f center Gently push and slide the sensor to 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 a...

Страница 272: ...Si12 411A Appendix 261 Part 9 Appendix 1 Piping Diagrams 262 1 1 Indoor Units 262 1 2 Outdoor Units 266 2 Wiring Diagrams 273 2 1 Indoor Units 273 2 2 Outdoor Units 276...

Страница 273: ...HEAT EXCH INDOOR UNIT M 6 4CuT 7 0CuT 9 5CuT HEAT EXCHANGER REFRIGERANT FLOW HEATING COOLING 6 4CuT 6 4CuT 4D032969C M 4D033698D FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 7 9CuT REFRIGERANT FLOW FAN MO...

Страница 274: ...grams Appendix 263 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 ON HEAT EXCH THERMISTOR COOLIN...

Страница 275: ...HEAT EXCH CuT 4D045450 FIELD PIPING FIELD PIPING CuT 6 4CuT INDOOR UNIT SIROCCO FAN 6 4CuT CuT FAN MOTOR M REFRIGERANT FLOW HEAT EXCHANGER COOLING HEATING THERMISTOR ON HEAT EXCH CDKS35CVMB CDXS25CVMA...

Страница 276: ...OOR UNIT 7 9CuT CROSS FLOW FAN CROSS FLOW FAN COOLING HEATING FAN MOTOR FAN MOTOR 9 5CuT M M HEAT EXCHANGER 7 0CuT 7 0CuT ON HEAT EXCH THERMISTOR 4D034714B FIELD PIPING FIELD PIPING 12 7CuT 6 4CuT REF...

Страница 277: ...uT 12 7 CuT 12 7 CuT 3D036222B ROOM B ROOM A ROOM B ROOM A GAS FIELD FIELD PIPING PIPING LIQUID REFRIGERANT FLOW 9 5CuT HEAT EXCHANGER THERMISTOR DE OUTDOOR UNIT COOLING 7 9CuT PROPELLER FAN DC FAN MO...

Страница 278: ...A ROOM B ROOM C ROOM B ROOM C ROOM A 3D036220B GAS FIELD FIELD PIPING LIQUID PIPING REFRIGERANT FLOW 9 5CuT HEAT EXCHANGER THERMISTOR DE OUTDOOR UNIT COOLING 7 9CuT PROPELLER FAN DC FAN MOTOR HEAT EXC...

Страница 279: ...FILTER FILTER FILTER 6 4CuT 6 4CuT 9 5CuT 9 5CuT 12 7CuT 15 9CuT 15 9CuT 15 9CuT ROOM A ROOM B ROOM C ROOM D ROOM A ROOM C ROOM B ROOM D PIPING FIELD FIELD GAS LIQUID PIPING OUTDOOR UNIT 3D036504B RE...

Страница 280: ...uT 6 4 CuT 12 7 CuT 12 7 CuT ROOM D ROOM C ROOM B ROOM A ROOM D ROOM C ROOM B ROOM A 3D034514C GAS FIELD FIELD PIPING PIPING LIQUID REFRIGERANT FLOW 9 5CuT HEAT EXCHANGER THERMISTOR DE OUTDOOR UNIT CO...

Страница 281: ...LINE STOP VALVE 9 5CuT 12 7CuT HEADER HEADER FILTER MOTOR OPERATED VALVE MOTOR OPERATED VALVE 7 9CuT 7 9CuT 7 9CuT 7 9CuT MOTOR OPERATED VALVE MOTOR OPERATED VALVE 12 7CuT 12 7CuT 12 7CuT 12 7CuT EVA...

Страница 282: ...FILTER 9 5 CuT 9 5 CuT 6 4 CuT 6 4 CuT 6 4 CuT 12 7 CuT ROOM A ROOM B ROOM C ROOM A ROOM B ROOM C 3D034512D GAS FIELD FIELD PIPING LIQUID PIPING REFRIGERANT FLOW HEADER HEAT EXCHANGER THERMISTOR DE O...

Страница 283: ...OM D 3D034511C GAS FIELD FIELD PIPING PIPING LIQUID REFRIGERANT FLOW HEADER 12 7CuT OUTDOOR UNIT HEAT EXCHANGER THERMISTOR DE COOLING HEATING 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT PR...

Страница 284: ...ED BLK YLW X1M 2 3 1 NOTE THAT OPERATION WILL THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK RESTART AUTOMATICALLY IF ON AGAIN CAUTION FIELD WIRING 2 3 1 outdoor 3D033599E 3D038065G CONTROLLER WIRE...

Страница 285: ...ON SWITCH X1M 3 2 1 PROTECTIVE EARTH THE MAIN POWER SUPPLY IS ON AGAIN TURNED OFF AND THEN BACK NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF FIELD WIRING CAUTION 3 2 1 3D038530J OUTDOOR PCB2 RECE...

Страница 286: ...UTOMATICALLY IF ON AGAIN S1W OPERATION SWITCH SW7 S6 S37 X11A X21A CONNECTOR PCB1 PCB4 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR X1M TERMINAL STRIP CAUTION FIELD WIRING 2 3 1 3D033909D outdoor CONTROLL...

Страница 287: ...N BLU BRN RED YLW 1 X11A 10 10 BLU 3D034318D S93 YLW BRN BLU RED 1 GRY S40 V 1 M1F M1C 3 M BLK M 4 W U Q1L BLK 9 N ROOM A ROOM B ROOM C TO INDOOR UNIT 3 3 3 2 2 2 POWER SUPPLY 1 1 1 FIELD WIRING 60Hz...

Страница 288: ...34 8 t YLW WHT RED ORG BRN BLU BLU RED BRN YLW 1 3D034848F X11A 10 10 BLU S93 YLW BRN BLU RED 1 GRY S40 V 1 M1F M1C 3 M BLK M 4 W U Q1L BLK 9 N N L TO INDOOR UNIT POWER SUPPLY ROOM A ROOM B ROOM C FIE...

Страница 289: ...SSOR MOTOR SELECT SW SW2 DIODE BRIDGE WIRING ERROR CHECK SW SW3 NIGHT QUIET MODE SETTING SW SW5 PRINTED CIRCUIT BOARD PRIORITY ROOM SETTING SW SW4 BLU 12 S2 12 BLU S3W 1 1 RED S102 S101 BLK V5 S4W WHT...

Страница 290: ...X11A 10 t 10 R5T BLU GRY ROOM C S93 YLW t BRN BLU RED R6T 1 YLW GRY V S40 t 1 3 M1F M1C M M BLK 4 W U Q1L BLK 9 N ROOM A ROOM B ROOM C ROOM D TO INDOOR UNIT POWER SUPPLY 50Hz 220 240V 60Hz 220 230V 3...

Страница 291: ...RENT TRANSFORMER M1C COMPRESSOR MOTOR Q1L OVERLOAD PROTECTOR BLU BLU S1W H1P BLU BLU BLU 12 S2 12 BLU S3W 1 1 RED S102 S101 BLK V5 S4W WHT 5 5 GRN MRM20 MRM10 FU2 3 15A MRB 1 MRD Y1S BLU MRC W Y1R BLK...

Страница 292: ...No 8 211 check No 9 211 compressor 240 256 compressor lock 184 compressor overload 183 compressor protection function 93 connection pipe condensation preventing function 107 control PCB 62 63 64 68 6...

Страница 293: ...02 insufficient gas control 103 INTELLIGENT EYE 79 INTELLIGENT EYE operation 141 INTELLIGENT EYE sensor 260 INTELLIGENT EYE sensor PCB 62 inverter PCB 231 249 inverter powerful operation 82 inverter u...

Страница 294: ...1 244 253 S93 69 224 231 244 253 SC control 101 self diagnosis digital display 84 sensor malfunction detection 103 service check function 167 service monitor PCB 231 247 249 shunt 237 254 255 shutter...

Страница 295: ...Si12 411A iv Index...

Страница 296: ...l 88 heat pump model 86 H Hall IC check 215 heating peak cut control 95 HOME LEAVE operation 81 I indoor unit PCB abnormality 171 input current control 94 input over current detection 186 installation...

Страница 297: ...77 thermistor or related abnormality outdoor unit 194 thermistor resistance check 209 troubleshooting with the LED indication 165 turning speed pulse input on the outdoor unit PCB check 214 U unspecif...

Страница 298: ...Si12 411A Printed in Singapore 03 2005 AK COS...

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