Daikin FTKS50BVMA User Manual Download

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Inverter Pair

Wall Mounted Type B-Series

[Applied Models]

Inverter Pair : Cooling Only

Inverter Pair : Heat Pump

Non-Inverter Pair : Cooling Only

Non-Inverter Pair : Heat Pump

Si04-306

Service

Manual

Summary of Contents for FTKS50BVMA

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 Servic...

Page 2: ...S Outdoor Unit R410A RKS50BVMA RKS50BVMB RS50BVMB RKS60BVMA RKS60BVMB RS60BVMB RKS71BVMA RKS71BVMB R22 RKD50BVM RKD50BVMA RKD50BVMT RKD18BVMS RKD60BVM RKD60BVMA RKD60BVMT RKD24BVMS RKD71BVM RKD71BVMA...

Page 3: ...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 Hom...

Page 4: ...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 R...

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 th...

Page 6: ...ug 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...

Page 7: ...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 approp...

Page 8: ...s leaks be sure to locate the leak and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leak cannot be located and the repair wor...

Page 9: ...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 resistanc...

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: ...ght 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...

Page 12: ...zontal 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 Co...

Page 13: ...ng 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...

Page 14: ...ode 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 Co...

Page 15: ...ntal 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 Cont...

Page 16: ...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 Tre...

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

Page 18: ...rt 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...

Page 19: ...ht 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 Rate...

Page 20: ...nd 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 F...

Page 21: ...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 Di...

Page 22: ...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 Consumpti...

Page 23: ...ildew 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...

Page 24: ...e 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 Microcomput...

Page 25: ...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...

Page 26: ...ol 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 Co...

Page 27: ...ntrol 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 Microco...

Page 28: ...t 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 Consumpti...

Page 29: ...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 Con...

Page 30: ...ldew 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...

Page 31: ...le 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 R...

Page 32: ...d 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 9...

Page 33: ...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...

Page 34: ...orizontal 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...

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

Page 36: ...t 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 Printe...

Page 37: ...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 thermi...

Page 38: ...nnector 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...

Page 39: ...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...

Page 40: ...cuit 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...

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: ...n 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 Cont...

Page 43: ...lains the conversion principle Drawing of Inverter The following drawing shows a schematic view of the inverter principle Phase Description 1 The supplied AC power source is converted into the DC powe...

Page 44: ...ondition 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...

Page 45: ...w 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 vertica...

Page 46: ...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 f...

Page 47: ...et by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room...

Page 48: ...r 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 temperatu...

Page 49: ...ht 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 slight...

Page 50: ...icrocomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature sifted 2 C from the set temperature Cooling 2 C higher Dry 1...

Page 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 I...

Page 52: ...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...

Page 53: ...riod 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 dr...

Page 54: ...orizing 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 surfac...

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 us...

Page 56: ...e 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 disc...

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 Pum...

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 compens...

Page 59: ...rom 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 fixe...

Page 60: ...he 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 begi...

Page 61: ...essor 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...

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 se...

Page 63: ...ling 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...

Page 64: ...ing 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 b...

Page 65: ...charge 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...

Page 66: ...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 dis...

Page 67: ...t 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...

Page 68: ...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...

Page 69: ...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...

Page 70: ...struction 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...

Page 71: ...er 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 ins...

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 e...

Page 73: ...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...

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: ...u 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 usefu...

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 select...

Page 77: ...lace 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...

Page 78: ...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...

Page 79: ...g 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 disa...

Page 80: ...dvances 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...

Page 81: ...d 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 t...

Page 82: ...lap 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...

Page 83: ...ed the flaps swinging range depends on the operation mode See the figure Three Dimensional 3 D Airflow Using three dimensional airflow circulates cold air which tends to collected at the bottom of the...

Page 84: ...on 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 e...

Page 85: ...tion 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 us...

Page 86: ...lease 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...

Page 87: ...ill 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 t...

Page 88: ...LLIGENT 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 SENSO...

Page 89: ...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 wi...

Page 90: ...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...

Page 91: ...he 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...

Page 92: ...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...

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...

Page 94: ...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 leak...

Page 95: ...when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit Th...

Page 96: ...re 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 anyt...

Page 97: ...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 m...

Page 98: ...oor 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 1...

Page 99: ...tion 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 Troubles...

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 o...

Page 101: ...ence 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 secon...

Page 102: ...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...

Page 103: ...tion 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 no...

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 indoo...

Page 105: ...r thermistor check Check the intake air filter Check the air passage YES YES R1401 Check the dust accumulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is...

Page 106: ...n 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 circ...

Page 107: ...t 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...

Page 108: ...an 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 R...

Page 109: ...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 131 Check the outdoor unit s LED A Check the...

Page 110: ...leshooting 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...

Page 111: ...curs 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...

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...

Page 113: ...ing 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 n...

Page 114: ...bove its stop level NO YES Normal NO YES Any LED off YES NO Check with the inverter checker Turn off the power and reconnect the harnesses Turn on the power again and get restarted Turn off the power...

Page 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...

Page 116: ...er 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...

Page 117: ...lowing 60 minute compressor running time total time Supposed Causes Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective heat exchanger or outdoor temperature thermis...

Page 118: ...elay 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...

Page 119: ...on 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 erro...

Page 120: ...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...

Page 121: ...ture 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 condense...

Page 122: ...emperature 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 t...

Page 123: ...in 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 t...

Page 124: ...ion 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...

Page 125: ...diation 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 th...

Page 126: ...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...

Page 127: ...s 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 Continuou...

Page 128: ...cted 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 b...

Page 129: ...ssor 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 sho...

Page 130: ...xchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R2853 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 131: ...n 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 Troubleshootin...

Page 132: ...ng 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 w...

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...

Page 134: ...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...

Page 135: ...ter 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...

Page 136: ...t 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 vo...

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 20k B 3950...

Page 138: ...r 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...

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 deforme...

Page 140: ...form 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 ins...

Page 141: ...rning 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 Fast...

Page 142: ...eing 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 recon...

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

Page 144: ...es 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 15...

Page 145: ...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 f...

Page 146: ...ir 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 ai...

Page 147: ...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...

Page 148: ...sassembling 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 witho...

Page 149: ...ee 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 a...

Page 150: ...zontal 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 rel...

Page 151: ...ndoor 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: ...re 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 scr...

Page 153: ...gs 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 Disconne...

Page 154: ...ft 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 elect...

Page 155: ...e 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 recei...

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 exchange...

Page 157: ...ing 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 swi...

Page 158: ...ending 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 s...

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 auxil...

Page 160: ...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 pro...

Page 161: ...f 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 th...

Page 162: ...otor 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 Loo...

Page 163: ...ure 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 h...

Page 164: ...cedure 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...

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 si...

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...

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...

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: ...rocedure 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 t...

Page 170: ...06 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...

Page 171: ...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 yell...

Page 172: ...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...

Page 173: ...trip 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 electro...

Page 174: ...wo 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 conn...

Page 175: ...r 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...

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: ...0 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...

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: ...e 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 wi...

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 pipi...

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 t...

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 h...

Page 185: ...ait 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 n...

Page 186: ...rise 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...

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 w...

Page 190: ...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 R2...

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

Page 192: ...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 Un...

Page 193: ...60BVM 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 4D0...

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 REFRIGER...

Page 195: ...S 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...

Page 196: ...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 DISC...

Page 197: ...ERATED 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 P...

Page 198: ...OP 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 EXCHANG...

Page 199: ...INTED 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...

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...

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

Page 202: ...72 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...

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

Page 204: ...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...

Page 205: ...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 cont...

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...

Page 207: ...imer 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 varist...

Page 208: ...alve 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 press...

Page 209: ...sion 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...

Page 210: ...3 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...

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