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Daikin FTKD50BVM, Service Manual

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Daikin FTKD50BVM Service Manual Download Page 105

Troubleshooting

Si04-306

96

Service Diagnosis

Troubleshooting

Check No.6

Refer to P.128

Note:

If the outside temperature is below –10°C in the cooling mode, the system may get interrupted 
with error 

A5

 displayed. The system will be reset itself, but this stop will be put in the error history 

memory.

NO

NO

NO

Check No. 6

Indoor unit heat exchanger 
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 it very dirty?

Does it conform to 

the thermistor characteristic

chart?

NO

Provide sufficient air passage.

Clean the air filter.

Clean the heat exchanger.

Replace the indoor unit PCB.

Replace the thermistor 
(replace the indoor unit PCB).

Caution

Be sure to turn off power switch before connect or disconnect connector, 
or parts damage may be occurred.

Summary of Contents for FTKD50BVM

Page 1: ... Pair Wall Mounted Type B Series Applied Models z z z zInverter Pair Cooling Only z z z zInverter Pair Heat Pump z z z zNon Inverter Pair Cooling Only z z z zNon Inverter Pair Heat Pump Si04 306 Service Manual ...

Page 2: ...MS Outdoor Unit R410A RKS50BVMA RKS50BVMB RS50BVMB RKS60BVMA RKS60BVMB RS60BVMB RKS71BVMA RKS71BVMB R22 RKD50BVM RKD50BVMA RKD50BVMT RKD18BVMS RKD60BVM RKD60BVMA RKD60BVMT RKD24BVMS RKD71BVM RKD71BVMA RKD71BVMT RKD28BVMS zHeat Pump Indoor Unit R410A FTXS50BVMA FTXS50BVMB FTYS50BVMB FTXS60BVMA FTXS60BVMB FTYS60BVMB FTXS71BVMA FTXS71BVMB R22 FTXD50BVMA FTXD50BVMT FTXD60BVMA FTXD60BVMT FTXD71BVMA FTX...

Page 3: ...w Dual Flaps Wide Angle Louvers and Auto Swing 36 1 3 Fan Speed Control for Indoor Units 37 1 4 Programme Dry Function 38 1 5 Automatic Operation 39 1 6 Night Set Mode 40 1 7 Intelligent Eye 41 1 8 Home Leave Operation 43 1 9 Inverter Powerful Operation 44 1 10 Other Functions 45 2 Function of Main Structural Parts 46 2 1 Function of Thermistor 46 3 Control Specification 48 3 1 Mode Hierarchy 48 3...

Page 4: ...3 4 1 Error Codes and Description 93 4 2 Indoor Unit PCB Abnormality 94 4 3 Freeze up Protection Control or High Pressure Control 95 4 4 Fan Motor DC Motor or Related Abnormality 97 4 5 Thermistor or Related Abnormality Indoor Unit 99 4 6 Signal Transmission Error between Indoor and Outdoor Units 100 4 7 OL Activation Compressor Overload 101 4 8 Compressor Lock 102 4 9 DC Fan Lock 103 4 10 Input O...

Page 5: ... the Panels and Plates 154 2 2 Removal of the Fan Motor Propeller Fan 158 2 3 Removal of the PCB Electrical Box 162 2 4 Removal of the Reactor 170 2 5 Removal of the Sound Blanket 172 2 6 Removal of the Four Way Valve 174 2 7 Removal of the Electronic Expansion Valve 175 2 8 Removal of the Compressor 176 Part 8 Others 179 1 Others 180 1 1 Test Run from the Remote Controller 180 1 2 Jumper Settings...

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

Page 7: ...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 appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the eq...

Page 8: ...as 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 work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic g...

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

Page 10: ...Si04 306 List of Functions 1 Part 1 Part 1 Part 1 Part 1 List of Functions List of Functions List of Functions List of Functions 1 List of Functions 2 1 1 R410A Series 2 1 2 R22 Series 5 ...

Page 11: ...ight Set Mode Horizontal Auto Swing Right and Left Worry Free 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 Treatment of Outdoor Heat Exchanger Indoor Unit Silent Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Un...

Page 12: ...izontal Auto Swing Right and Left Worry Free 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 Treatment of Outdoor Heat Exchanger Indoor Unit Silent Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit S...

Page 13: ...ing Right and Left Worry Free 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 Treatment of Outdoor Heat Exchanger Indoor Unit Silent Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit Silent Operation...

Page 14: ...Mode Horizontal Auto Swing Right and Left Worry Free 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 Treatment of Outdoor Heat Exchanger Indoor Unit Silent Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoo...

Page 15: ...ontal Auto Swing Right and Left Worry Free 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 Treatment of Outdoor Heat Exchanger Indoor Unit Silent Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit Sil...

Page 16: ...y Free 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 Treatment of Outdoor Heat Exchanger Indoor Unit Silent Operation Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible Indoor Unit Outdoor Unit Silent Operation Manual Intelligent Eye...

Page 17: ...List of Functions Si04 306 8 List of Functions ...

Page 18: ...art 2 Part 2 Part 2 Part 2 Specifications Specifications Specifications Specifications 1 Specifications 10 1 1 Cooling Only R410A Series 10 1 2 Cooling Only R22 Series 13 1 3 Heat Pump R410A Series 17 1 4 Heat Pump R22 Series 22 ...

Page 19: ...ard Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 17 0 19 0 21 Power Consumption Rated W 40 45 50 Power Factor 98 0 98 7 99 2 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 795 238 290 1 050 238 290 1 050 238 Packag...

Page 20: ...ontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 20 Power Consumption Rated W 40 40 45 Power Factor 96 6 96 6 96 4 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 795 238 290 1 050 238 290 1 050 238 Packaged Dimensions H W D ...

Page 21: ...able Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 795 230 290 1 050 230 Packaged Dimensions H W D mm 280 840 338 337 1 147 366 Weight kg 9 12 Gross Weight kg 13 17 Operation Sound H L dBA 44 35 45 36 Sound Power H dBA 63 63...

Page 22: ...ovable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 19 0 18 0 17 0 19 0 18 0 21 0 20 0 19 0 21 0 20 0 23 0 22 0 21 0 23 0 22 Power Consumption Rated W 40 45 50 Power Factor 95 7 96 6 98 0 95 7 96 6 97 4 97 8 98 7 97 4 97 8 98 8 98 8 99 2 98 8 98 8 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control...

Page 23: ...hable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 19 0 18 0 17 0 19 0 18 0 21 0 20 0 19 0 21 0 20 0 23 0 22 0 21 0 23 0 22 Power Consumption Rated W 40 45 50 Power Factor 95 7 96 6 98 0 95 7 96 6 97 4 97 8 98 7 97 4 97 8 98 8 98 8 99 2 98 8 98 8 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 1 050 238 290 1 0...

Page 24: ...Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current A 0 19 0 21 0 23 Power Consumption W 40 45 50 Power Factor 95 7 97 4 98 8 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 1 050 238 290 1 050 238 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 337 1 147 366 337 1 147 366 Weigh...

Page 25: ...ownward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current A 0 21 0 23 0 24 Power Consumption W 45 50 52 Power Factor 97 4 98 8 98 5 Temperature Control Microcomputer Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 1 050 238 290 1 050 238 290 1 050 238 Packaged Dim...

Page 26: ...Control Right Left Horizontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 17 0 17 0 19 0 19 Power Consumption Rated W 40 40 45 45 Power Factor 98 0 98 0 98 7 98 7 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 795 238 290 1 050 238 Packaged Dimensions H ...

Page 27: ... Control Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 21 0 21 Power Consumption Rated W 50 50 Power Factor 99 2 99 2 Temperature Control Microcomputer Control Dimensions H W D mm 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 Weight kg 12 Gross Weight kg 17 Operation Sound H M L SL dBA 46 42 37 34 46 42 37 34 Sound Power H dBA 63...

Page 28: ... Right Left Horizontal and Downward Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 20 0 18 0 20 Power Consumption Rated W 40 45 40 45 Power Factor 96 6 97 8 96 6 97 8 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 795 238 290 1 050 238 Packaged Dimensions H W D mm ...

Page 29: ...ir Direction Control Right Left Horizontal and Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 20 0 22 Power Consumption Rated W 45 50 Power Factor 96 4 97 6 Temperature Control Microcomputer Control Dimensions H W D mm 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 Weight kg 12 Gross Weight kg 17 Operation Sound H M L SL dBA 46 42 37 34 46 42 37 34 Sound Po...

Page 30: ...le Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 795 230 290 1 050 230 Packaged Dimensions H W D mm 280 840 338 337 1 147 366 Weight kg 9 12 Gross Weight kg 13 17 Operation Sound H L dBA 44 35 42 45...

Page 31: ...movable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 19 0 18 0 17 0 19 0 18 0 19 0 18 0 17 0 19 0 18 0 21 0 20 0 19 0 21 0 20 0 21 0 20 0 19 0 21 0 20 Power Consumption Rated W 40 40 45 45 Power Factor 95 7 96 6 98 0 95 7 96 6 95 7 96 6 98 0 95 7 96 6 97 4 97 8 98 7 97 4 97 8 97 4 97 8 98 7 97 4 97 8 Temperature Control Microcomputer Control Microcomputer Control...

Page 32: ...ward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 23 0 22 0 21 0 23 0 22 0 23 0 22 0 21 0 23 0 22 Power Consumption Rated W 50 50 Power Factor 98 8 98 8 99 2 98 8 98 8 98 8 98 8 99 2 98 8 98 8 Temperature Control Microcomputer Control Dimensions H W D mm 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 Weight kg 12 Gross Weight kg 17 Operation Sound H M L SL dBA 46 ...

Page 33: ...l and Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current A 0 19 0 19 0 21 0 21 Power Consumption W 40 40 45 45 Power Factor 95 7 95 7 97 4 97 4 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 290 1 050 238 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 337 1 147 366 Weight kg 12 12 Gross Weight kg 17 17 ...

Page 34: ...t Horizontal and Downward Air Filter Removable Washable Mildew Proof Running Current A 0 23 0 23 Power Consumption W 50 50 Power Factor 98 8 98 8 Temperature Control Microcomputer Control Dimensions H W D mm 290 1 050 238 Packaged Dimensions H W D mm 337 1 147 366 Weight kg 12 Gross Weight kg 17 Operation Sound H M L SL dBA 46 42 37 34 46 42 37 34 Outdoor Unit RXD71BVMT Casing Color Ivory White Co...

Page 35: ...Specifications Si04 306 26 Specifications ...

Page 36: ...rt 3 Printed Circuit Board Printed Circuit Board Printed Circuit Board Printed Circuit Board Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 28 1 1 Indoor Unit 28 1 2 Outdoor Unit 30 ...

Page 37: ...s 4 S21 Connector for centralized control HA 5 S26 S37 Connector for buzzer PCB 6 S27 S29 S36 Connector for control PCB 7 S28 Connector for signal receiver PCB 8 S32 Connector for heat exchanger thermistor 9 S35 Connector for Intelligent Eye sensor PCB 10 S38 Connector for display PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failu...

Page 38: ...onnector Wiring Diagram 29 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 JA S21 S35 SW1 S29 R2861 R2862 RTH1 S38 S27 LED1 LED2 LED3 S37 R2863 S36 R2864 ...

Page 39: ...r control PCB 6 S40 Connector for overload protector 7 S51 S101 Connector for service monitor PCB 8 S70 Connector for fan motor 9 S80 Connector for four way valve coil 10 S90 Connector for thermistors outdoor air heat exchanger and discharge pipe 11 S91 Connector for fin thermistor 12 AC1 E Connector for power supply PCB 13 H1 H2 Connector for diode bridge 14 HE2 Connector for earth 15 L1 L2 Conne...

Page 40: ...rcuit Board Connector Wiring Diagram 31 PCB Detail PCB 1 Control PCB outdoor unit E AC1 FU2 3 15A H1 H2 S32 S33 S71 S31 S91 R2865 S40 S20 S90 S101 S51 S80 S10 AC2 PCB 2 Power Supply PCB Service Monitor PCB HAC1 V3 HE1 HE2 R2866 HL FU1 30A S52 S102 SW4 R2867 SW1 LED A ...

Page 41: ...Printed Circuit Board Connector Wiring Diagram Si04 306 32 Printed Circuit Board Connector Wiring Diagram MID SPM S34 S72 R2868 S70 FU201 3 15A R2869 CN14 CN11 L1 L2 ...

Page 42: ...on 43 1 9 Inverter Powerful Operation 44 1 10 Other Functions 45 2 Function of Main Structural Parts 46 2 1 Function of Thermistor 46 3 Control Specification 48 3 1 Mode Hierarchy 48 3 2 Frequency Control 49 3 3 Controls at Mode Changing Start up 51 3 4 Discharge Pipe Temperature Control 52 3 5 Input Current Control 52 3 6 Freeze up Protection Control 53 3 7 Heating Peak cut Control 53 3 8 Fan Con...

Page 43: ...plains the conversion principle Drawing of Inverter The following drawing shows a schematic view of the inverter principle Phase Description 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency When the frequency increases the rotation speed of the compressor increases ...

Page 44: ...condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following table shows the functions that define the minimum and maximum frequency Forced Cooling Operation For more information refer to Forced operation mode on page 60 60 120 ...

Page 45: ...ow that guarantees a comfortable air distribution Auto Swing The following table explains the auto swing process for heating cooling dry and fan Outline of 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditioner Detail of the Action When the horizontal swing and verti...

Page 46: ...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 50 60 71kW cla...

Page 47: ...set by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room temperature at startup Temperature ON point at which operation starts Frequency switching point Temperaturedifference for operation stop 24ºC Room temperature at startup 0 5ºC 1 5ºC 18ºC 18ºC 1 0ºC ...

Page 48: ...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 temperature Main unit setting temperature 2 5 deg Cooling Heating switching point Room temperature Main unit setting temperature 2 5 deg Thermostat ON OFF point is the same as the ON OFF point of cooling or h...

Page 49: ...ght Set circuit continues heating or cooling the room at the set temperature for the first one hour then automatically lowers the temperature setting slightly in the case of cooling or raises it slightly in the case of heating for economical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity ...

Page 50: ...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 C higher and Auto according to the operation mode at that time 1 In case of Fan mode the fan speed reduces by 50 rpm If the sensor detects the outputs 10 times sec or more it judges humans exist 1sec...

Page 51: ... so as to prevent this phenomena After this 40 minutes the prohibition of the thermostat off is cancelled and it can realize the conditions to conduct thermostat off depending on the room temperature In or after this forty minutes if the sensor detects human motion detection signal it let the set temperature and the fan speed return to the original set point keeping a normal operation Others The d...

Page 52: ...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 is ineffective in dry mode and fan mode 2 Details of Function A mark representing HOME LEAVE is indicated on the liquid crystal display of the remote controller The indoor unit is operated according ...

Page 53: ...eriod of twenty minutes 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 targeted temperature in dry operation Approx 2 C Heating H tap 90 rpm 30 C Fan H tap 90 rpm Automatic Same as cooling heating in Powerful operation The target is kept unchanged R2823 Target temp Fan 80rpm Set temp 18 C Powerf...

Page 54: ...dorizing Function This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter in a single unit Combining the two filters in this way increases the active surface area of the new filter This larger surface area allows the filter to effectively trap microscopic particles decompose odours and deactivate bacteria and viruses even for the high volume of air requ...

Page 55: ... operation must be halted 2 The discharge pipe thermistor is used for detecting the discharge thermistor disconnected C Indoor Heat Exchanger Thermistor DCN 1 The indoor heat exchanger thermistor is used for controlling target discharge pipe temperature Set a target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature Control the electronic expansion valve so t...

Page 56: ...pe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the operation must be halted 2 The discharge pipe thermistor is used for detecting the discharge thermistor disconnected C Indoor Heat Exchanger Thermistor DCN 1 The indoor heat exchanger thermistor is used for controlling target discharge pipe temperature Set a target discharge pipe tempe...

Page 57: ... cooling including drying Note Unless specified otherwise an indoor dry operation command must be regarded as cooling operation Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling Heating Defrosting Stop mode except for cooling heating modes by indoor command Preheat operation During C capacitor is discharging Stop R2829 Air condi...

Page 58: ... freeze prevention defrost 3 Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions Four way valve operating compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency For Cooling Only Model 1 Determine command ...

Page 59: ...from the frequency previously calculated 2 I control If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the D value obtaining the fixed D value When the D value is small lower the frequency When the D value is large increase the frequency 3 Limit of frequency variation width When the difference between input current and input curre...

Page 60: ...the operation 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 the operation as the four way valve is switched acquire the differential pressure required for activating the four way valve by having output the operating frequency which is more than a cer...

Page 61: ...ressor 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 until the current rushes on the drooping zone without change In the unchanged zone the frequency limit will remain In the return reset zone the frequency limit will be cancelled Limitation of current drooping and stop...

Page 62: ... start with the indoor heat exchanger temperature after 2 sec from operation start Control in Each Zone 3 7 Heating Peak cut Control Outline Heat Pump Only During heating operation the signals being sent from the indoor unit allow the operating frequency limitation and prevent abnormal high pressure The signal from the indoor unit must be divided as follows Detail Conditions for Start Controlling ...

Page 63: ...oling Operation When the outdoor air temperature is lower than 37 C the fan tap must be set to L 2 When Heating Operation When the outdoor air temperature is higher than 4 C the fan tap must be turned to L only for heat pump model 3 9 Moisture Protection Function 2 Outline In order to obtain the dependability of the compressor the compressor must be stopped according to the conditions of the tempe...

Page 64: ...ling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature Under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 44 minutes ...

Page 65: ...scharge pipe temperature control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control R2833 Fully closed when power is turned ON Open control when starting Control of target discharge pipe temperature Pressure equalizing control Open control when starting Control of target discharge pipe temperature Defrost control FD 1 Pressure eq...

Page 66: ...3 12 6 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If any is disconnected open the electronic expansion valve according to the outdoor air temperature and the operating frequency and operate for a specified time and then stop After 3 minutes of waiting restart th...

Page 67: ...ft 3 12 8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger temperature and adjust the electronic expansion valve opening so that the actual discharge pipe temperature become close to that temperature Indirect SH control using the discharge pipe temperature Determine a correction value of the electronic expansion valve...

Page 68: ...t be regarded as gas insufficient In addition to such conventional function if the discharge temperature is higher than the target discharge pipe temperature and the electronic expansion valve is fully open 450 pulses more than the specified time it is considered as an insufficient gas With the conventional function a power consumption is weak comparing with that in the normal operation when gas i...

Page 69: ...t abnormal and not in the 3 minute stand by mode 2 The operating mode of the outdoor unit is the stop mode 3 The forced operation is ON The forced operation is allowed when the above and conditions are met Starting adjustment If the forced operation switch is pressed as the above conditions are met 1 Command frequency 66 Hz 2 Electronic expansion valve opening Depending on the capacity of the indo...

Page 70: ...nstruction 63 2 1 Safety Precautions 63 2 2 Names of Parts 65 2 3 Preparation before Operation 68 2 4 AUTO DRY COOL HEAT FAN Operation 71 2 5 Adjusting the Air Flow Direction 73 2 6 POWERFUL Operation 75 2 7 OUTDOOR UNIT SILENT Operation 76 2 8 HOME LEAVE Operation 77 2 9 INTELLIGENT EYE Operation 79 2 10 TIMER Operation 81 2 11 Care and Cleaning 83 2 12 Troubleshooting 86 ...

Page 71: ...ver method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work and handing ove...

Page 72: ... repairs accompanying adding refrigerant 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 installation consult the dealer or a qualified technician In order to avoid electric shock fire or injury if you detect any abnormally such as smell of fire stop the operat...

Page 73: ...ge 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 Do not place things such as vessels containing water or anything else on top of the unit Water may pene trate into the unit and degrade electrical insulations resulting in an electric shock To install...

Page 74: ...Si04 306 Instruction System Configuration 65 2 2 Names of Parts 4 Indoor Unit Main unit control panel 7 14 11 12 13 4 3 1 2 9 10 8 6 5 16 15 ...

Page 75: ...ou use HOME LEAVE Operation page 16 14 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it The operation mode refer to the following table This switch is useful when the remote controller is missing 15 Room temperature sensor It senses the air temperature around the unit 16 Signal receiver It receives signals from the remote controller When the unit receiv...

Page 76: ... Press once again to stop it 7 MODE selector button It selects the operation mode AUTO DRY COOL HEAT FAN page 10 8 SILENT button for OUTDOOR UNIT SILENT operation page 15 9 FAN setting button It selects the air flow rate setting 10 SENSOR button for INTELLIGENT EYE operation page 18 11 SWING button page 12 Flap Horizontal blade 12 SWING button page 12 Louver Vertical blades 13 ON TIMER button page...

Page 77: ...place the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote controller display begins to fade or if reception deteriorates please replace with new alkali batteries Using manganese batteries reduces the lifespan The attached batteries are provided for the initial use of the system The usable period...

Page 78: ...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 expose the remote controller to direct sunlight Dust on the signal transmitter or receiver will reduce the sensitivity Wipe off dust with soft cloth Signal communication may be disabled if an electronic starter type f...

Page 79: ...ng 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 a safety device to disable the system C TEMP ON OFF POWERFUL HOME LEAVE MODE TIMER FAN SILENT SWING ON CANCEL OFF SENSOR 1 3 2 Recommended temperature setting For cooling 26 C 28 C For heating 20 C 24 C Mode Operating cond...

Page 80: ...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 change the temperature setting 4 Press TEMPERATURE adjustment button DRY or FAN mode AUTO or COOL or HEAT mode The temperature setting is not variable Press to raise the temperature and press to lower the tempe...

Page 81: ...nd 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 capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit Note on DRY operation The computer chip works to rid...

Page 82: ...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 will light up and the louvers will begin to swing 4 When the louvers have reached the desired position press the SWING button once more The display will go blank The louvers will stop moving C TEMP ON OFF POWE...

Page 83: ...ted 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 room and hot air which tends to collect near the ceiling throughout the room preventing areas of cold and hot developing ATTENTION Always use a remote controller to adjust the flaps angle If you att...

Page 84: ...ion there are some functions which are not avail able 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 outdoor unit must be increased and the air flow rate be fixed to the maximum setting The temperature and air flow settings are not variable In DRY mode The temperature setting i...

Page 85: ...ation 2 Press SILENT button again NOTE This function is available in COOL HEAT and AUTO modes This is not available in FAN and DRY mode POWERFUL operation and OUTDOOR UNIT SILENT operation cannot be used at the same time Priority is given to POWERFUL operation If operation is stopped using the remote controller or the main unit ON OFF switch when using OUTDOOR UNIT SILENT operation will remain on ...

Page 86: ...please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate 1 Press HOME LEAVE button Make sure is displayed in the remote control display 2 Adjust the set temperature with or as you like 3 Adjust the air flow rate with FAN setting button as you like Home leave operation will run with these settings the next time you use this function T...

Page 87: ...will be welcomed by a comfortably air conditioned room Push the HOME LEAVE Operation button again and the air conditioner will adjust capacity to the set temperature for normal operation Set the unit to HOME LEAVE Operation before leaving the living room when going to bed The unit will maintain the temperature in the room at a comfortable level while you sleep When you enter the living room in the...

Page 88: ...ELLIGENT 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 2 SENSOR When somebody in the room Normal operation When nobody in the room 20 min after start energy saving operation Somebody back in the room Back to normal operation ...

Page 89: ...t 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 will not go on during powerful operation Night set mode page 20 will not go on during you use INTELLIGENT EYE operation Do not place large objects near the sensor Also keep heating units or humidifiers...

Page 90: ...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 is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The memory is canceled when remote controller batteries are replaced When operating the unit via the ON OFF Timer the a...

Page 91: ...the setting rapidly 3 Press ON TIMER button again The TIMER lamp lights up To cancel ON TIMER operation 4 Press CANCEL button The TIMER lamp goes off To combine ON TIMER and OFF TIMER A sample setting for combining the two timers is shown below ATTENTION In the following cases set the timer again After a breaker has turned OFF After a power failure After replacing batteries in the remote controlle...

Page 92: ...y 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 Close the front panel slowly Press the panel at both sides and the center CAUTION Units Don t touch the metal parts of the indoor unit If you touch those parts this may cause an injury When removing or attachi...

Page 93: ... dust does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Air purifying filter with photocatalytie deodorizing function gray The air purifying capacity of the photocatalytic purifying filter can be renewed by washing it with water once every 6 months We recommend replacing it ...

Page 94: ...e outdoor unit Check that the earth wire is not disconnected or broken Check that the drain comes smoothly out of the drain hose during COOL or DRY operation If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the 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 or c...

Page 95: ...m when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit This happens when the air in the room is cooled into mist by the cold air flow during cooling operation The indoor unit gives out odour This happens when smells of the room furniture or cigarettes are ...

Page 96: ...Are the air flow rate and the air direction set appropriately Is the unit set to the INTELLIGENT EYE mode page 18 Operation stops suddenly OPERATION lamp flashes Are the air filters clean Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the breaker OFF Then turn it ON again and try operating the air...

Page 97: ...e It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user For specialist maintenance contact the service shop where you bought the air conditioner The maintenance cost must be born by the user Call the service shop immediately After a power failure The air conditioner automatically resumes operation in about 3 minutes You should just wait for a whil...

Page 98: ...door Unit 99 4 6 Signal Transmission Error between Indoor and Outdoor Units 100 4 7 OL Activation Compressor Overload 101 4 8 Compressor Lock 102 4 9 DC Fan Lock 103 4 10 Input Over Current Detection 104 4 11 Four Way Valve Abnormality 106 4 12 Discharge Pipe Temperature Control 108 4 13 Position Sensor Abnormality 109 4 14 CT or Related Abnormality 110 4 15 Thermistor or Related Abnormality Outdo...

Page 99: ...ation 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of Operation Lamp Troubleshooting with the LED Indication The outdoor unit has one green LED LED A on the PCB The flashing green LED indicates normal condition of microcomputer operation Operation lamp green HOME LEAVE lamp r...

Page 100: ... for heat pump model and cooling operation cannot be used when the outside temperature is below 5 C 10 C for Europe Diagnosis with remote controller indication 93 Equipment operates but does not cool or does not heat only for heat pump model Check for wiring and piping errors in the indoor and outdoor units connection wires and pipes Conduct the wiring piping error check described on the product d...

Page 101: ...uence shown below and notifies with a long beep Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code display hold the timer cancel button down for 5 seconds The code display also cancels itself if the button is not pressed for 1 minute No Code No Code No Code 1 00 11 E7 21 UA 2 U4 12 C7 22 A5 3 F3 13 H8 23 J9 4 E6 14 J3 24 E8 5 L5 15 A3 25 P4 6 A6 16 ...

Page 102: ...y 99 C9 Room temperature thermistor abnormality 99 Outdoor Unit E5 OL activation compressor overload 101 E6 Compressor lock 102 E7 DC fan lock 103 E8 Input over current detection 104 EA Four way valve abnormality 106 F3 Discharge pipe temperature control 108 F6 High pressure control in cooling 123 H6 Position sensor abnormality 109 H8 CT or related abnormality 110 H9 Outdoor air thermistor or rela...

Page 103: ...ction in approximately 10 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Connector connection check note YES Is it normal NO Correct connections Replace PCBs R1400 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Model Type Connector No W...

Page 104: ... according to the temperature detected by the indoor unit heat exchanger thermistor Malfunction Decision Conditions High pressure control During heating operations the temperature detected by the indoor heat exchanger thermistor is above 65 C Freeze up protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Supposed Causes Operation halt due to clogged air ...

Page 105: ...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 it very dirty Does it conform to the thermistor characteristic chart NO Provide sufficient air passage Clean the air filter Clean the heat exchanger Replace the indoor unit PCB Replace the thermistor...

Page 106: ...an motor operation 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 fan motor winding Operation halt due to breaking of wire inside the fan motor Operation halt due to breaking of the fan motor lead wires Operation halt due to faulty capacitor of the f...

Page 107: ...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 Does it rotate Stop fan motor Is rotation number command pulse generated Is rotation number command pulse generated Check No 01 Check output of fan motor connector Check No 01 Check output of fan motor c...

Page 108: ...han 120 ohms or below about 50 C more than 1 860 kohms Note The values vary slightly in some models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 6 Refer to P 128 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor Check the connector connection YES Correct the connection Replace the thermistor Replace the indoor unit PCB Replace t...

Page 109: ...nal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units wire No 2 Troubleshooting Check No 10 Refer to P 131 Check the outdoor unit s LED A Check the indoor unit outdoor unit connection wires YES YES Correct the indoor unit outdoor unit connection wires Diagnose the outdoor unit Replace the connection wires between the indoor and outdoor units Re...

Page 110: ...bleshooting Check No 4 Refer to P 126 Check No 5 Refer to P 127 Check No 6 Refer to P 128 Check No 11 Refer to P 131 Insert the thermistor in position Replace the discharge pipe thermistor Replace the valve itself or the coil Replace the four way valve coil or the valve itself Replace the outdoor unit PCB Refer to the refrigerant line check procedure Replace the outdoor unit PCB R2841 Caution Be s...

Page 111: ...ccurs 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 W Inverter checker Part No 1225477 Correct the power supply or replace the SPM Replace the outdoor unit PCB Replace the compressor Check the electronic expansion valve Replace it as required Replace the compressor R2842 Ca...

Page 112: ... for about 5 minutes normal Supposed Causes Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Foreign matters stuck in the fan Troubleshooting Check No 15 Refer to P 133 Turn off the power and reconnect the connector Remove Replace the outdoor unit fan motor Replace the outdoor unit PCB R2843 Caution Be sure to turn off power switch before connect o...

Page 113: ...wing 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 run for about 5 minutes normal Supposed Causes Over current due to compressor failure Over current due to defective power transistor Over current due to defective inverter main circuit electrolytic capacitor Over current due...

Page 114: ...above its stop level NO YES Normal NO YES Any LED off YES NO Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and get restarted Turn off the power and disconnect the harnesses U V and W Get restarted and measure the input current Check No 8 Check the discharge pressure Check No 7 Check the installation condition Check No 14 Check the main circu...

Page 115: ... to see if they function within their normal ranges in the operating mode Malfunction Decision Conditions A following condition continues over 1 minute after operating 10 minutes Cooling dry operation room temp indoor heat exchanger temp 10 C Heating indoor unit heat exchanger temp room temp 10 C Supposed Causes Connector in poor contact Thermistor defective Outdoor unit PCB defective Four way val...

Page 116: ...wer switch before connect or disconnect connector or parts damage may be occurred Four way valve coil disconnected loose YES YES NO Functioning NO Check No 11 Check the refrigerant line Malfunctioning l Insufficient gas l Water mixed l Stop valve defective Harness out of connector NO YES Disconnect the harness from the connector Resistance between harnesses about 1500 ohms Malfunctioning Functioni...

Page 117: ...llowing 60 minute compressor running time total time Supposed Causes Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective heat exchanger or outdoor temperature thermistor defective Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective Troubleshooting Check No 4 Refer to P 126 Check No 6 Refer to P 128 ...

Page 118: ...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 132 Replace the outdoor unit PCB outdoor unit fan Replace the outdoor unit PCB Reconnect as specified Inverter checker Part No 1225477 Correct the power supply or replace the outdoor unit PCB Replace the compressor R2847 Caution...

Page 119: ...ion 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 will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Power transistor defective Internal wiring brok...

Page 120: ...itch 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 Capacitor charged when the indoor unit or outdoor unit main relay turns on NO NO DC380 30V YES Voltage within the allowable range Supply voltage 15 YES NO Any LED off Compressor running YES NO YES NO ...

Page 121: ...ature Malfunction Decision Conditions The thermistor input is above 4 96 V or below 0 04 V with the power on Error J3 is judged if the discharge pipe thermistor temperature is smaller than the condenser thermistor temperature Supposed Causes Connector in poor contact Thermistor defective Outdoor unit PCB defective Indoor unit PCB defective Condenser thermistor defective in the case of J3 error out...

Page 122: ...temperature thermistor l Outdoor air thermistor Replace the following thermistor l Indoor unit heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB R2849 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again on remote controller NO YES YES YES NO Indoor unit heat exchanger thermistor funct...

Page 123: ...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 7 1kW class Reset is made when the temperature drops below 70 C Supposed Causes Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Fin thermistor defective Connector in poor contact Outdoor...

Page 124: ...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 l Fin thermistor NO Slightly dirty Check No 9 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty Functioning Thermistor as specified in its characteristic chart Above 80 C NO YES NO YES Check the radiation fin tem...

Page 125: ...adiation fin temperature with the compressor on is above 90 C If a radiation fin temperature rise takes place 4 times successively the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed Causes Fin temperature rise due to defective outdoor unit fan Fin temperature rise due ...

Page 126: ...or the power transistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R2851 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Error displayed again YES NO Slightly dirty Check No 9 Check the outdoor unit fan or related Malfunctioning Radiation fin dirty Too dirty...

Page 127: ...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 Clearing condition Continuous run for about 5 minutes normal Supposed Causes Over current due to defective power transistor Over current due to wrong internal wiring Over current due to abnormal supply voltage Over current due ...

Page 128: ...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 between compressor s coil phases NO YES Normal YES NO Any LED off Turn off the power and turn it on again to get the system started See if the same error occurs Turn off the power and disconnect the h...

Page 129: ...essor running frequency Voltage However when the status of running frequency 55 Hz is kept on for a certain time Note The values are different from model to model Gas shortage detection II If a gas shortage error takes place 4 times successively the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor runni...

Page 130: ...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 Any thermistor disconnected YES Malfunctioning Malfunctioning NO Functioning Stop valve closed NO YES Check the CT YES NO Gas shortage error again Functioning Check No 6 Check the thermistors YES NO ...

Page 131: ...on 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 defective Troubleshooting Check the supply voltage Correct the power supply Check for such factors for a long term Try to get restarted a couple of times Replace the SPM Replace the outdoor unit PCB R2854 Caution Be sure to...

Page 132: ...ing sensed by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 60 C Deactivated when the said temperature drops below 50 C Supposed Causes The installation space is not large enough Faulty outdoor unit fan Faulty electronic expansion valve Faulty defrost thermistor Faulty outdoor...

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

Page 134: ...r connection 2 Check motor control voltage output pins 2 1 7 6 5 4 3 2 1 Motor power supply voltage Unused Unused P 0V reference potential Motor control voltage 15 VDC Rotation command voltage 1 5 VDC Rotation pulse input Upper fan connector 8 7 6 5 4 3 2 1 Motor power supply voltage Unused Unused Unused P 0V reference potential Motor control voltage 15 VDC Rotation command voltage 1 to 5 VDC Rota...

Page 135: ...ster Check the conductivity between pins 1 3 and 6 and between pins 2 4 and 5 If there is no conductivity between the pins the EV coil is faulty 4 If no EV generates latching sound in the above step 2 the outdoor unit PCB is faulty 5 If the conductivity is confirmed in the above step 2 mount a good coil which generated latching sound in the EV unit that did not generate latching sound and check to...

Page 136: ...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 voltage at DC 180 220 V with compressor on Fig 1 Disconnect the four way valve coil from the connector and check the continuity Fig 1 Voltage at S80 DC180 220V ON Compressor Time ...

Page 137: ...s 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 20kΩ B 3950 Temperature C 20 211 0 kΩ 15 150 10 116 5 5 88 0 67 2 5 51 9 10 40 15 31 8 20 25 25 20 30 16 35 13 40 10 6 45 8 7 50 7 2 ...

Page 138: ...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 allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the opposite direction R1438 Abnormal YES YES YES Does the discharged air from other outdoor...

Page 139: ... 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 deformed YES High Check the outdoor unit fan system Reconnect R2857 Outdoor unit fan running YES Fan motor lead wire connector disconnected YES NO NO Outdoor unit fan system functioning Go to Check No 15 ...

Page 140: ...eform disturbance near the zero cross sections circled in Fig 2 5 1 9 Inverter Units Refrigerant System Check Check No 11 Fig 1 Fig 2 Refrigerant system check Check for gas leaks See the section on insufficient gas detection Conduct the check after operating the equipment for a sufficient length of time Correct the problem Conduct vacuum drying Replace the refrigerant Is the discharge thermister d...

Page 141: ...urning off the circuit breaker z If unavoidably necessary to touch a live part make sure 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 lead wire Thermistor lead wire OL lead wire Reactor lead wire Compressor lead wire TB2 PS TB3 P2 N1 590 592 593 580 ...

Page 142: ...being applied 1 Stop the operation first and then the power off and disconnect the connector S70 2 Make sure there is about DC 270 V between pins 4 and 7 3 With the system and the power still off reconnect the connector S70 4 Make a turn of the fan motor with a hand and make sure the pulse 0 15 V appears twice at pins 1 and 4 If the fuse is blown out the outdoor unit fan may also be in trouble Che...

Page 143: ...Check Si04 306 134 Service Diagnosis ...

Page 144: ...des 141 1 4 Removal of the Electrical Box PCB Swing Motor 143 1 5 Removal of the Heat Exchanger 149 1 6 Removal of the Fan Rotor Fan Motor 152 2 Outdoor Unit 154 2 1 Removal of the Panels and Plates 154 2 2 Removal of the Fan Motor Propeller Fan 158 2 3 Removal of the PCB Electrical Box 162 2 4 Removal of the Reactor 170 2 5 Removal of the Sound Blanket 172 2 6 Removal of the Four Way Valve 174 2 ...

Page 145: ...s before disassembling work Step Procedure Points 1 Features When the signal receiver catches a signal from the remote controller it produces beep sound and the operation lamp blinks 2 Remove the air filters 1 Hold the front panel by the tabs on the both sides and lift it until it stops with a click 2 Lift an air filter upwards slightly by the center knob and then pull it out downwards ...

Page 146: ...air filters with displaying FRONT on the front side Insert two claws of the air filter completely 3 Remove an air purifying filter with photocatalytic deodorizing function 1 Push up the bottom of an air purifying filter to undo the claws 2 on lower 3 on upper and take the filter out The right and left filters are interchangeable Step Procedure Points ...

Page 147: ...1 While opening the front panel further than it stops release both axes and remove the front panel Slide the front panel side to side to release each axis Align the right and left axes with grooves in turn and insert them to the end when installing Step Procedure Points ...

Page 148: ...isassembling work Step Procedure Points 1 Remove the service cover 1 Loosen the screw and remove the service cover by the knob No field setting switch is inside it You can remove the front grille without detaching the service cover 2 Remove the front grille 1 Loosen the three fixing screws of the front grille It has no fixing screws inside blades though previous models had ...

Page 149: ...ree hooks on the center and the both sides of the upper part Refer to the removal procedure in a reverse way when reassembling 3 Pull the upper part of the front grille out and lift the lower part up and then remove the front grille Make sure that all the hooks are placed securely when reassembling Step Procedure Points ...

Page 150: ...izontal blades 1 Open the horizontal blades It has no fixing screws inside blades though previous models had 2 Undo the left pivot of the horizontal blades 3 Bend the horizontal blades slightly and release the center pivots Slide the horizontal blades to the left and release the right pivot Installation procedure 1 Since key pattern hook is provided rotate the blades and fit it to the right pivot ...

Page 151: ...Indoor Unit Si04 306 142 Removal Procedure 2 Remove the vertical blades 1 Undo the right and left pivots 2 Undo the three claws 3 Pull the vertical blades rightwards and remove it Step Procedure Points ...

Page 152: ...ure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the front grille Parts layout 2 Remove the drip proof plate 1 Loosen the screw 3 Disconnect the indoor heat exchanger thermistor and the earth Mind that not to lose the clip for the thermistor ...

Page 153: ...ngs Loosen the screw and remove the terminal strip board You can remove the electrical box without detaching the terminal strip board Screw M4 25 2 Disconnect the connectors for fan motor S1 3 Disconnect the connectors for swing motor S6 S8 4 Loosen the fixing screw of the electrical box Step Procedure Points ...

Page 154: ...eft and undo the back claw The electrical box has a claw on its back 6 Pull the electrical box out towards you Hook the back claw of the electrical box when reassembling 7 Loosen the screw on the electrical box Screw M4 16 8 Push the shelter up and undo the claw Step Procedure Points ...

Page 155: ...he lower side Release the claws on the upper side 10 Cut the clamp 11 The receiver units contain four PCBs Remove each PCB with releasing claws Disconnect every connector from each PCB Remove the receiver units while pushing the claws of connectors 12 Cut the clamp Clamps should be always available Fix it as it was before Step Procedure Points ...

Page 156: ... two claws on the upper side Remove the control PCB 2 Control PCB indoor unit S1 connector for the fan motor S21 HA S26 connector for the room temperature thermistor S32 connector for the heat exchanger thermistor 6 Remove the swing motor for horizontal blades 1 Remove the screw of the swing motor Step Procedure Points ...

Page 157: ...wing motor for vertical blades 1 Release the swing axis on the right side Releasing the swing axis 2 Loosen the two screws and detach the swing motor assembly 3 Loosen the two screws and remove the swing motor Six claws hold the assembly Step Procedure Points ...

Page 158: ...pending on the model into refrigerant cycle Contaminating of air or other gas causes abnormal high pressure in refrigerating cycle and this results in pipe breakage or personal injuries Pay attention so that the residual water in the drain will not make the floor wet In case that a drain hose is buried inside a wall remove it after the drain hose in the wall is pulled out 1 Disconnect the refriger...

Page 159: ... the indoor unit from the installation plate 3 Remove the piping fixture 1 Release the claw on the upper side of the piping fixture on the back of the unit 4 Remove the heat exchanger 1 Widen the auxiliary piping to the extent of 10 20 At an angle of 10 20 Step Procedure Points ...

Page 160: ...g claws on the right side and release 4 Pull the heat exchanger to the front side and undo the claws completely and then lift it Caution When removing or reinstalling heat exchanger be sure to wear protective gloves or wrap the heat exchanger with cloths Fins can cut fingers Step Procedure Points ...

Page 161: ...ff all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel 1 Loosen the two screws You can remove the fan rotor without detaching the right side panel 2 Lift the right side panel and remove it 2 Remove the fan rotor 1 Loosen the screw and remove the fan motor fixture 2 Loosen the fixing screw of the fan rotor ...

Page 162: ...rotor and the bottom frame 2 When reassembling the fan motor align the end of the connector with the height of for play 4 Remove the bearing 1 Remove the fan rotor The bearing is on the left side 2 Loosen the two screws and remove the mounting plate for the bearing 3 The bearing is made of rubber Push it inwards firmly and remove it Step Procedure Points 5mm Side face of bottom frame Side face of ...

Page 163: ...sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the panels and plates Take care not to cut your finger by the fins of the heat exchanger 1 Loosen the four screws and lift the top panel 2 Loosen the four screws and remove the discharge grille ...

Page 164: ...ocedure 155 The front grille has four claws Slide the discharge grille upwards and remove it 3 Loosen the six screws of the front panel 4 Push the front panel and undo the claw Lift the clamp plate and remove it Step Procedure Points ...

Page 165: ... claw and then the left side claws Remove the front panel Lift the front panel and remove it while pushing the right side panel inwards Lift the front panel and undo the left side claws Fit the left side of the front panel first when installing Step Procedure Points ...

Page 166: ... Removal Procedure 157 2 Remove the stop valve cover 1 Loosen the screw of the stop valve cover 2 Pull down the stop valve cover to undo the claws and remove it The stop valve cover has six claws Step Procedure Points R2687 ...

Page 167: ... work Step Procedure Points Remove the top panel and the front panel 1 Remove the electrical box cover This procedure is not necessary to remove the propeller fan only 1 Loosen the screw on the back of the shelter 2 Undo the two claws and remove it The claws have been released since the front panel was removed 3 Release the four claws of the electrical box cover and remove it R2688 Shelter Claws ...

Page 168: ...Si04 306 Outdoor Unit Removal Procedure 159 2 Remove the fan motor 1 Disconnect the connector for fan motor S70 2 The illustration shows arrangement of the fan motor lead wire Step Procedure Points ...

Page 169: ...Procedure 3 Unscrew the washer fitted nut M10 of the propeller fan with a spanner Align mark of the propeller fan with D cut section of the motor shaft when reassembling 4 Remove the four screws from the fan motor Step Procedure Points ...

Page 170: ...306 Outdoor Unit Removal Procedure 161 5 Pull the fan motor out Put the lead wire through the back of the motor when reassembling so as not to be entangled with the propeller fan Step Procedure Points R2697 ...

Page 171: ...e disassembling work Step Procedure Points Remove the top panel and the front panel 1 Remove the right side panel Terminal strip number black 1 power supply white 2 power supply red 3 transmission yellow green earth 1 Disconnect the three connection wirings and the two earth wires 2 Loosen the three screws of the right side panel 3 Loosen the fixing screw of the electrical box ...

Page 172: ...r part and the one claw of the upper back when reassembling 2 Disconnect harnesses 1 Loosen the fixing screw of the cable way board Service monitor PCB Step Procedure Points R2701 Claw R2702 Claws S52 SW1 A B C LEDA Green SW4 Initial setting OFF LED A Green ON SW4 S102 S2 R2704 ...

Page 173: ...strip HE2 yellow green to the terminal strip earth HAC1 black from the control PCB AC1 HE1 yellow green from the control PCB E Power supply PCB 4 Disconnect the connectors of the front side S20 electronic expansion valve S40 overload protector S80 four way valve S90 thermistors discharge pipe outdoor air heat exchanger Step Procedure Points HE1 V3 varistor soldered HE2 HL FU1 250V 30A HAC1 R2707 ...

Page 174: ...two claws and release the control PCB from the ditch of the front side 7 Disconnect the harnesses while opening the control PCB S10 to the terminal strip AC2 to the terminal strip 8 Disconnect the connectors S51 to the service monitor PCB S101 to the service monitor PCB Step Procedure Points ...

Page 175: ...or unit S10 to the terminal strip S20 electronic expansion valve S31 to CN14 of the SPM S32 to CN11 of the SPM S33 to S34 of the MID S40 overload protector S51 to S52 of the service monitor PCB S71 to S72 of the MID S80 four way valve S90 thermistors discharge pipe outdoor air heat exchanger S91 fin thermistor S101 to S102 of the service monitor PCB Step Procedure Points ...

Page 176: ...Si04 306 Outdoor Unit Removal Procedure 167 11 Disconnect the relaying wire connector for the compressor 12 Release the clamp by pliers 13 Disconnect the reactor harness Step Procedure Points R2715 ...

Page 177: ...Outdoor Unit Si04 306 168 Removal Procedure 14 Pull the clamp and draw the thermistor harness out from the back of the electrical box 15 Loosen the screw of the electrical box Step Procedure Points ...

Page 178: ...Si04 306 Outdoor Unit Removal Procedure 169 16 Release the clamp of the four way valve harness 17 Lift the electrical box and remove it Step Procedure Points R2720 ...

Page 179: ...10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the electrical box 1 Remove the partition plate 1 Release the clamp by pliers 2 Loosen the two screws of the partition plate The partition plate is fixed to the bottom frame with a claw R2724 Claw ...

Page 180: ...Si04 306 Outdoor Unit Removal Procedure 171 3 Lift the partition plate and remove it 4 Loosen the screw Slide the reactor and remove it from the partition plate Step Procedure Points ...

Page 181: ...re disassembling work Step Procedure Points 1 Disconnect the harness of each thermistor 2 Release the discharge pipe thermistor Pay attention to the direction of the clip so as not to touch the lead wire of the thermistor when reassembling 3 Cut the clamp by nippers Disconnect the outdoor heat exchanger thermistor Clamps should be always available Fix it as it was before ...

Page 182: ... the sound blanket side outer are torn easily remove the blanket carefully 5 Remove the sound blanket top upper 6 Remove the sound blanket top lower 7 Remove the sound blanket side inner Since the piping ports on the sound blanket side inner are torn easily remove the blanket carefully Step Procedure Points ...

Page 183: ... brazing Braze it quickly when no nitrogen gas can be used 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth will not be dried and avoid excessive heating Keep below 120 C In case of the difficulty with gas brazing ma...

Page 184: ... putty Before working make sure that the refrigerant is empty in the circuit 3 Heat up the two brazed parts of the electronic expansion valve and disconnect Be sure to apply nitrogen replacement when heating up the brazed part Caution Be careful about the electronic expansion valve pipes and so on which were heated up by a gas brazing machine so as not to get burnt your hands Warning Ventilate whe...

Page 185: ...wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Disconnect the lead wires of the compressor Be careful so as not to burn the compressor terminals or the name plate Make a note U red V yellow W blue N brown N W U V ...

Page 186: ...arise toxic gas Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals or the name plate 5 Heat up the brazed part of the discharge side and disconnect 6 Heat up the brazed part of the suction side and disconnect Be careful so as not to burn the heat exchanger fin Warning Since it may happen that refr...

Page 187: ...Outdoor Unit Si04 306 178 Removal Procedure ...

Page 188: ...Si04 306 Others 179 Part 8 Part 8 Part 8 Part 8 Others Others Others Others 1 Others 180 1 1 Test Run from the Remote Controller 180 1 2 Jumper Settings 181 ...

Page 189: ... 1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts such as louver movement are working properly The air conditioner requires a small amount of power in its standby mode If the system is ...

Page 190: ...e the drip proof plate 4 tabs 4 Cut the address jumper JA on the control PCB Wireless remote controller 1 Slide the front cover and take it off 2 Cut the address jumper J4 1 2 2 Jumper Setting R2871 R2872 Jumper On indoor control PCB Function When connected factory set When cut JC Power failure recovery function Auto start Unit does not resume operation after recovering from a power failure Timer ...

Page 191: ...Others Si04 306 182 Others ...

Page 192: ...6 Appendix 183 Part 9 Part 9 Part 9 Part 9 Appendix Appendix Appendix Appendix 1 Piping Diagrams 184 1 1 Indoor Units 184 1 2 Outdoor Units 186 2 Wiring Diagrams 190 2 1 Indoor Units 190 2 2 Outdoor Units 193 ...

Page 193: ...D60BVM FTK X D60BVMA FTK X D60BVMT FTKD18BVMS FIELD PIPING FIELD PIPING 12 7CuT 6 4CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M REFRIGERANT FLOW ON HEAT EXCH THERMISTOR HEATING COOLING 4D040081A HEAT EXCHANGER FIELD PIPING FIELD PIPING 15 9CuT 6 4CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M REFRIGERANT FLOW ON HEAT EXCH THERMISTOR HEATING COOLING 4D040082A HEAT EXCHANGER ...

Page 194: ... 185 FTKD71BVM FTK X D71BVMA FTK X D71BVMT FTKD 24 28 BVMS 15 9CuT FIELD PIPING FIELD PIPING 9 5CuT CROSS FLOW FAN FAN MOTOR 7 9CuT INDOOR UNIT 12 7CuT M HEAT EXCHANGER ON HEAT EXCH THERMISTOR REFRIGERANT FLOW COOLING HEATING 4D040083A ...

Page 195: ...AS STOP VALVE VALVE MOTOR OPERATED STOP VALVE LIQUID FIELD PIPING FIELD PIPING REFRIGERANT FLOW 12 7CuT 6 4CuT COOLING 3D037835A OUTDOOR UNIT 9 5CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT DISCHARGE PIPE THERMISTOR EXCHANGER THERMISTOR HEAT PROPELLER FAN M HEAT EXCHANGER COMPRESSOR 12 7CuT OUTDOOR AIR TEMPERATURE 7 9CuT 7 9CuT 7 9CuT 7 9CuT THERMISTOR ACCUMLATOR CAPILLARY T...

Page 196: ...T GAS STOP VALVE STOP VALVE LIQUID FIELD PIPING FIELD PIPING REFRIGERANT FLOW 12 7 CuT 6 4 CuT COOLING 3D037851A OUTDOOR UNIT 9 5CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT DISCHARGE PIPE THERMISTOR EXCHANGER THERMISTOR HEAT PROPELLER FAN M HEAT EXCHANGER 7 9CuT COMPRESSOR 12 7CuT OUTDOOR AIR TEMPERATURE 7 9CuT 7 9CuT 7 9CuT 7 9CuT THERMISTOR ACCUMLATOR CAPILLARY TUBE 4 CAP...

Page 197: ...PERATED STOP VALVE LIQUID FIELD PIPING FIELD PIPING REFRIGERANT FLOW 12 7 CuT 6 4 CuT HEATING COOLING 3D034262C OUTDOOR UNIT 12 7CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT DISCHARGE PIPE THERMISTOR EXCHANGER THERMISTOR HEAT PROPELLER FAN MUFFLER M HEAT EXCHANGER 7 9CuT 7 9CuT VALVE FOUR WAY COMPRESSOR ON HEATING 12 7CuT 12 7CuT 12 7CuT OUTDOOR AIR TEMPERATURE 7 9CuT 7 9CuT 7 9CuT...

Page 198: ...TOP VALVE LIQUID FIELD PIPING FIELD PIPING REFRIGERANT FLOW 6 4 CuT 12 7 CuT 3D037849A COOLING HEATING 12 7CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT DISCHARGE PIPE THERMISTOR EXCHANGER THERMISTOR HEAT PROPELLER FAN MUFFLER HEAT EXCHANGER 7 9CuT 7 9CuT VALVE FOUR WAY COMPRESSOR ON HEATING 12 7CuT 12 7CuT 12 7CuT OUTDOOR AIR TEMPERATURE 7 9CuT 7 9CuT 7 9CuT 7 9CuT THERMISTOR ACCUM...

Page 199: ...RINTED CIRCUIT BOARD PROTECTIVE EARTH X1M 3 2 1 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 3D038065C OUTDOOR CONTROLLER WIRELESS REMOTE PCB4 PCB3 PCB5 INTELLIGENT EYE LED1 H1P R1T SENSOR t S37 S38 LED2 H2P LED3 H3P PCB2 S27 S36 S1W RECEIVER SIGNAL S26 S35 S21 S29 S28 PCB1 R2T S32 t RECTIFIER 1 RED M1S M S6...

Page 200: ... IS ON AGAIN TURNED OFF AND THEN BACK NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF FIELD WIRING CAUTION 3 2 1 OUTDOOR 3D038466A CONTROLLER WIRELESS REMOTE PCB4 PCB3 LED1 H1P R1T t S37 S38 LED2 H2P PCB2 S27 S1W RECEIVER SIGNAL S26 S21 S29 S28 PCB1 R2T S32 t RECTIFIER 1 RED M1S M S6 ORG YLW PNK 5 BLU TRANSMISSION CIRCUIT 7 1 3 15A S1 Fu WHT BRN RED BLU ORG H2 H3 H1 INDOOR FG M1F M GRN R1T R2T T...

Page 201: ...Wiring Diagrams Si04 306 192 Appendix FTKD 18 24 28 BVMS ...

Page 202: ...S72 S71 1 BLU 8 8 FU201 3 15A RED 1 1 S70 BRN W V U N 7 1 8 RED S33 S34 YLW WHT BLU RED BRN ORG RED BRN BLU YLW X11A 10 10 BLU YLW BRN BLU RED 1 3D037866D GRY V S40 1 3 M1F M1C M M BLK 4 W U Q1L BLK N 60Hz 220 230V 50Hz 220 240V FIELD WIRING TO INDOOR UNIT POWER SUPPLY N L 2 3 1 V2 V5 VARISTOR MRC W MAGNETIC RELAY Y2E ELECTRONIC EXPANSION VALVE E AC1 AC2 Z1C Z2C FERRITE CORE MRM10 MRM20 R1T R3T TH...

Page 203: ...Wiring Diagrams Si04 306 194 Appendix RKD 18 24 28 BVMS ...

Page 204: ...r transistor check 132 thermistor resistance check 128 turning speed pulse input on the outdoor unit PCB check 133 check No 01 125 check No 02 125 check No 04 126 check No 05 127 check No 06 128 check No 07 129 check No 08 130 check No 09 130 check No 10 131 check No 11 131 check No 12 132 check No 13 132 check No 14 133 check No 15 133 clamp plate 155 CN11 30 166 CN14 30 166 compressor 177 compre...

Page 205: ...e 28 30 G gas piping 149 H H1 30 H2 30 H6 109 H8 110 H9 112 HA 28 147 HAC1 30 164 hall IC 37 97 HE1 30 164 HE2 30 164 heat exchanger 151 154 heat exchanger thermistor 46 47 99 113 heating peak cut control 53 high pressure control 95 high pressure control in cooling 123 HL 30 164 Home Leave operation 43 77 horizontal blade 141 hot start function 45 I indoor unit PCB abnormality 94 input current con...

Page 206: ... 113 reactor 171 receiver units 146 remote controller 92 removal procedure 135 right side panel 152 162 room temperature thermistor 99 RTH1 28 S S1 28 144 147 S10 30 165 166 S101 30 165 166 S102 30 166 S20 30 164 166 S21 28 147 S26 28 147 S27 28 S28 28 S29 28 S31 30 166 S32 28 30 147 166 S33 30 166 S34 30 166 S35 28 S36 28 S37 28 S38 28 S40 30 164 166 S51 30 165 166 S52 30 166 S6 28 144 S70 30 159...

Page 207: ...Timer operation 81 top panel 154 troubleshooting 86 93 troubleshooting with the LED indication 90 turning speed pulse input on the outdoor unit PCB check 133 U U0 120 U2 122 U4 100 V V1 28 V3 30 varistor 28 30 vertical blades 142 voltage detection function 60 W wide angle louvres 36 wiring diagrams 190 ...

Page 208: ...valve performance check 127 freeze up protection control 53 freeze up protection control or high pressure control 95 frequency control 49 frequency principle 34 H heating peak cut control 53 high pressure control in cooling 123 Home Leave operation 43 I indoor unit PCB abnormality 94 input current control 52 input over current detection 104 installation condition check 129 insufficient gas 120 ins...

Page 209: ...ssion error between indoor and outdoor units 100 SPM 32 T target discharge pipe temperature control 58 thermistor cooling only model 47 heat pump model 46 thermistor or related abnormality indoor unit 99 thermistor or related abnormality outdoor unit 112 thermistor resistance check 128 trial operation from remote controller 180 troubleshooting with the LED indication 90 turning speed pulse input o...

Page 210: ...23 Japan Tokyo office Shinjuku Sumitomo Bldg 6 1 Nishi Shinjuku 2 chome Shinjuku ku Tokyo 163 0235 Japan Zandvoordestraat 300 B 8400 Oostende Belgium z For further improvement specifications or designs are subject to change without prior notice Printed in Singapore 06 2003 AK COS ...

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