Daikin FTK25JV1NB, Manual

Page 1: ...ter Pair FTK X J RK X J Series Cooling Only Indoor Unit FTK25JV1NB FTK35JV1NB Outdoor Unit RK25JV1NB RK35JV1NB Heat Pump Indoor Unit FTX25JV1NB FTX35JV1NB Outdoor Unit RX25JV1NB RX35JV1NB Si 86 book Page i Friday June 23 2000 10 26 AM ...

Page 2: ... 1 10 Intelligent Eye J type 23 1 11 Good Sleep Cooling Control J Type 25 1 12 Automatic Operation 26 1 13 Input Current Control H J Type 27 1 14 Freeze Protection Function in Cooling H J Type 28 1 15 Peak Cut Control Function H J Type 29 1 16 Four Way Valve Function Compensation H J Type 30 1 17 Compressor Protection Function H J Type 31 1 18 Wet Operation Protection H J Type 32 1 19 Dew Condensa...

Page 3: ...eration Halt Due to Detection of Input Over Current 74 6 Check 76 6 1 How to Check 76 Part 6 Removal Procedure 85 1 For FTK25J FTK35J FTX25J FTX35J 86 1 1 Removal of Air Filter 86 1 2 Removal of Front Grille 88 1 3 Removal of Horizontal Blade and Vertical Blade 90 1 4 Removal of Switch Box PC Board and Swing Motor 92 1 5 Removal of Heat Exchanger 97 1 6 Install of Drain Plug 99 1 7 Removal of Fan ...

Page 4: ...SIE 86 iv Table of Contents Index i Drawings Flow Charts iii Si 86 book Page iv Friday June 23 2000 10 26 AM ...

Page 5: ...embling 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 refrigerant gas The ref...

Page 6: ...l shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient strength and if the installation work is not conducted securely the equipment can fall and cause injury Be sure to install the product correctly by using the provided stand...

Page 7: ...e old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If a combustible gas leaks and r...

Page 8: ...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 the furniture and floor Caution Icon Type of Information Description Note Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution Caution A caution is used when there is dan...

Page 9: ...SIE 86 List of Function 1 Part 1 List of Function 1 Functions 2 1 1 Indoor Unit and Outdoor Unit 2 Si 86 book Page 1 Friday June 23 2000 10 26 AM ...

Page 10: ...Auto Swing Right and Left Worry Free Reliability Durability Auto Restart after Power Failure 3 Step Airflow H P Only Self Diagnosis Digital Display Comfortable Control Comfort Control Auto Fan Speed Self Diagnosis LED Display Silent Operation Control LCD Remote Controller Option Double Thermostat Function The Remote Controller Loss Prevention with the Chain Option Intelligent Eye Wiring Error Chec...

Page 11: ...Diagram 3 Part 2 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram and Name 4 1 1 FTK25 35J Series FTX25 35J Series 4 1 2 RK25 35J Series RX25 35J Series 6 Si 86 book Page 3 Friday June 23 2000 10 26 AM ...

Page 12: ...ntralized control to 5 rooms 5 S27 S36 Connector for control PCB 6 S26 Connector for signal receiver PCB 7 S32 Connector for room temp Heat exchanger thermistor 8 S35 Connector for Intelligent Eye Sensor PCB 1 V1 Varistor 2 JA ADDRESS SETTING JAMPER JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery function Refer to page 121 for more detail 3 SW7 OPERATION SWITCH ...

Page 13: ...SIE 86 Printed Circuit Board Connector Wiring Diagram and Name Printed Circuit Board Connector Wiring Diagram 5 P C B 1 Control P C B Detail Si 86 book Page 5 Friday June 23 2000 10 26 AM ...

Page 14: ...tor for compressor motor with internal thermostat 2 S70 Connector for fan motor 3 S80 Connector for 4 WAY VALVE COIL RX25 35J Series only 4 S91 Connector for THERMISTOR 5 S40 Connector for OL 6 SW1 NONE Forced operation ON OFF switch 7 SW2 NONE Forced operation Mode selector switch H P only S30 W U V FU S70 V1 Service Monitor S40 S80 S91 S SIGNAL L LIVE N NEUTRAL RL002 Si 86 book Page 6 Friday Jun...

Page 15: ...SIE 86 Printed Circuit Board Connector Wiring Diagram and Name Printed Circuit Board Connector Wiring Diagram 7 P C B 1 Control P C B Detail Si 86 book Page 7 Friday June 23 2000 10 26 AM ...

Page 16: ...Printed Circuit Board Connector Wiring Diagram and Name SIE 86 8 Printed Circuit Board Connector Wiring Diagram Si 86 book Page 8 Friday June 23 2000 10 26 AM ...

Page 17: ...tdoor Units 20 1 9 General Functions 21 1 10 Intelligent Eye J type 23 1 11 Good Sleep Cooling Control J Type 25 1 12 Automatic Operation 26 1 13 Input Current Control H J Type 27 1 14 Freeze Protection Function in Cooling H J Type 28 1 15 Peak Cut Control Function H J Type 29 1 16 Four Way Valve Function Compensation H J Type 30 1 17 Compressor Protection Function H J Type 31 1 18 Wet Operation P...

Page 18: ...trol the frequency with available functions and no available functions OUTDOOR UNIT M COOLING HEATING FIELD PIPING FIELD PIPING R1T R2T INDOOR UNIT R1T R2T M RE003 Controls Outdoor heat exchanger thermistor Outdoor ambient temperature thermistor Indoor ambient temperature thermistor Indoor heat exchanger thermistor Symbol R2T R1T R1T R2T Freeze up prevention Refer to page 11 Peak cut off Refer to ...

Page 19: ...nger thermistor R2T To control the pressure By setting a high frequency limit heating mode Toutdoor 16 C Tindoor heat exchanger 22 C compressor on compressor stop timer delay 70 s has passed Freeze up prevention indoor heat exchanger thermistor R2T To prevent the freezing up of the indoor unit in cooling mode By setting a high frequency limit during cooling 0 C Tindoor heat exchanger 8 C Tindoor h...

Page 20: ...ditioners Note The outdoor unit retains the operating mode when the thermostat is switched off Refer to Pre heat operation on page 21 Mode Item Normal operating mode Auto Heat pump only Cooling Dry keep Heating Including Automatic defrost Fan for Cooling only Stop mode Pre heat operation Refer to Pre heat operation Stop Test Operation Forced cooling heating Forced operating mode Forced cooling Si ...

Page 21: ... Description 1 The single phase power supply in AC is converted into DC 2 The single phase power supply DC is converted into a three phase shopped DC voltage with a variable frequency When the frequency increases the rotation speed of the compressor increases resulting in an increased refrigerant circulation This leads to a higher amount of the heat exchange per unit When the frequency decreases t...

Page 22: ...nce 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 heating operation For more information refer to Forced mode on page 16 60 120 300 45 C Air discharge temperature inverter normal heat pump Start seconds RG001 Freque...

Page 23: ...t outdoor 19 C Condition Description 1 A minutes of accumulated runtime not yet 90 minutes of accumulated runtime condition 1 or 2 or 3 in the table below 2 90 minutes of accumulated runtime condition 1 or 4 or 5 in the table below Conditions Description 1 T outdoor heat exchanger B C for 1 min 2 T ambient outdoor 5 C T outdoor heat exchanger 5 T ambient outdoor 0 4 check if T indoor heat exchange...

Page 24: ...eed H swing flap preservation of last setting indoor adjustment send forced mode to unit Reset H type Press the forced operation switch again or after 60 minutes Press the forced operation switch again or after 60 minutes Item Forced cooling Forced heating Conditions not in the 3 minute stand by mode normal operation mode outdoor unit off no malfunction in the outdoor unit forced mode cooling mode...

Page 25: ...The diffuser presses the warm air above the floor to reach the entire room Cooling mode During cooling mode the diffuser retracts into the indoor unit This enables a distribution of cooled air throughout the entire room Louvres The louvres made of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution Autoswing The following table explains the autosw...

Page 26: ...he five positions calculated through the preliminary and evenly divided into four partitions which were taken from the upper and lower flap angle s range limits of each mode When Auto swing is chosen the flap swings in the swing range which meets the operation mode selected Others The vertical louver can be adjusted manually The movable range is 60 degrees for left or right and total 120 degrees A...

Page 27: ...matic air flow control for heating The following drawing explains the principle for fan speed control for heating Note When there is no operation and the night set mode turns on the step is low Refer to Night set mode on page 22 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 O...

Page 28: ...eed for E seconds ON OFF A C B C For ambient temperature between C C outdoor heat exchanger temperature RL014 A C B C C C D C E sec H type 28 34 0 18 10 30 J type 33 39 0 9 10 60 Caution J type operates the outdoor unit fans in the cooling mode even at the condition that a compressor is not operated In case of existing model H series the outdoor unit fans stops at the condition that a compressor i...

Page 29: ...hen entering the following dry mode 1 Stop an operation will start with Dry 2 Mode except Dry changing to dry mode Thermostat ON OFF point is decided in accordance with the following conditions 2 Frequency command The frequency command is decided based on a room temperature zone The room temperature zone is decided as follows 11 5 C 13 5 C Outside temperature OFF ON OFF warm up control for compres...

Page 30: ...34Hz Room temp 18 C A 0 0Hz 0 0Hz B 36 36Hz 34 34Hz D 36 36Hz 40 40Hz E 40 40Hz 42 42Hz F 40 44Hz 42 42Hz Fan rpm thermostat ON H type 25 35 J type 25 35 Thermostat ON 800 800rpm 970 980rpm Thermostat OFF 700 700rpm 800 800rpm Thermostat ON and dry on powerful operation 850 910rpm 1050 1050rpm Item Description Drawing cooling The set temperature stays on for one hour then decreases slightly for ec...

Page 31: ...minutes compressor speed becomes low and can realize energy saving operation But as thermostat is prone to be off by the fact that the set temperature has been shifted the thermostat off action is prohibited in 40 minutes 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 ...

Page 32: ...ality SIE 86 24 Main Function Others The dry operation can t command the setting temperature with a remote controller but internally the set temperature is shifted by 1 C Si 86 book Page 24 Friday June 23 2000 10 26 AM ...

Page 33: ...xisting value in accordance with the passed time since the OFF timer was set 4 When the good sleep cooling control is on while a normal operation with a OFF timer is going on once returning to the original criterion which doesn t shift the timer s set temperature and the shift alteration at every sequence by 1 C is carried out in accordance with the value above mentioned 5 Fan speed will change by...

Page 34: ...ing switching point Room temperature Main unit setting temperature 2 5 deg 3 Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 4 During initial operation Room temperature Remote controller setting temperature Cooling operation Room temperature Remote controller setting temperature Heating operation However in the automatic Powerful cooling heating mode the gua...

Page 35: ...ency is cancelled Stop zone judged as the stop zone with I IN I4 Compressor is stopped and countermeasure for the malfunction is carried out 2 Current step down deciding I3 In cooling mode At outdoor temperature DOAIC I3 I3C 0 5 outdoor temp DOAIC At POWER FULL I3CPWF is used instead of I3C At outdoor temperature DOAIC I3 I3C At POWER FULL I3CPWF is used instead of I3C In heating mode At outdoor t...

Page 36: ...reeze protection control Frequency is increased approximately every 2 Hz min in the up area Frequency alteration in the steady area is not conducted Frequency down is carried out in the step down area approximately every 2 4 Hz min Compressors stop in the stop area After compressor stops fan keeps operating in 700 rpm for H type and 800 rpm for J type LL operation aiming at rising heat exchanger s...

Page 37: ...L heating operation There is no change in H type even if POWER FULL is applied DP Peak cut temperature of heat exchanger The restriction for frequency is not conducted in the return area by means of peak cut control Frequency is increased approximately every 2 Hz min in the up area Frequency alteration in the steady area is not conducted Frequency down is carried out in the step down area approxim...

Page 38: ...our way valve is OFF when compressors stop it will be ON at this time 2 If a four way valve was ON when compressors operated in the last time it will be ON at this time 3 At the start of compressors 4 At the initial start of compressors after power is reset In case 1 and 3 are under the simultaneous condition of AND it indicates Cooling or 2 and 3 are under the simultaneous satisfaction of AND it ...

Page 39: ...ce with A B decided in 1 1 Timer TCG1 A B will start at the start of compressors The upper limit of output frequency in between TCG1 A B is set at FCG1 A B 2 In exceeding TCG1 A B timer TCG2 A B starts and the upper limit of output frequency in between TCG2 A B is set at FCG2 A B 3 In exceeding TCG2 A B timer TCG3 A B starts and the upper limit of output frequency in between TCG3 A B is set at FCG...

Page 40: ...on with AND the lower limit of frequency in this function is set at FCG8 3 Compressors stop 4 Outdoor temperature DOA4CG If 3 and 4 are under the coordinate condition with OR the lower limit of frequency at the second step control is cancelled 3 The set of a constant DOA1CG DOA2CG DOA3CG FCG7 and FCG8 have constants for Cooling Heating separately and these constants are distinguished with a suffix...

Page 41: ...ation sweating prevention function will be conpleted if 5678 are under the coordinate condition with OR 2 Control details It controls the operation frequency in accordance with the temperature zone in the step down area the return area which are set in every model Frequency limitation by means of freeze protection control will not be carried out in the return area Frequency is increased approximat...

Page 42: ...General Functionality SIE 86 34 Main Function Si 86 book Page 34 Friday June 23 2000 10 26 AM ...

Page 43: ...SIE 86 System Configuration 35 Part 4 System Configuration 1 Instruction 36 1 1 FTK25 35J FTX25 35J 36 Si 86 book Page 35 Friday June 23 2000 10 26 AM ...

Page 44: ...r OFF Continued abnormal operation will cause troubles electric shocks fire etc If anything is abnormal consult the shop where you bought the air conditioner WARNING Do notuse the air conditioner for preservation purposes Do not use it for preserving precision instruments foods plants animals works of fine arts etc Performance or quality may deteriorate and animal or plant life may be shorter Befo...

Page 45: ...r temperature around the unit FTK FTX Mode COOL AUTO Air flow rate AUTO AUTO Temperature setting 22 C 25 C The operation mode refers to the following table Push this button once to start operation Push once again to stop it This button is useful when the remote controller is missing ON OFF button It receives signals from the remote controller When the unit receives a signal you will hear a short b...

Page 46: ...It displays the current settings In this illustration each section is shown with all its displays ON for the purpose of explanation Some models may not show all its indications ON TIMER button See page 44 Timer Operation ON TIMER Setting button It Changes the time setting MODE selector button It selects the operation mode TEMPERATURE TIME adjustment buttons DRY COOL FAN AUTO DRY COOL HEAT FTK FTX ...

Page 47: ...the signals reach the unit Fix the holder to a wall a pillar etc with the screws supplied with the holder Fit the claw of the holder into the bottom of the remote controller and push the remote controller onto the wall Remote controller 1 2 3 l To remove pull it upwards Preparation Before Operation ATTENTION Position and correctly 2 3 1 Remote controller holder Set Receiver 1 2 3 Press with a fing...

Page 48: ... operation is continued out of this range A safety device may work to stop the operation Condensation may occur on the indoor unit and drip A safety device may work to stop the operation A safety device may work to stop the operation Condensation may occur on the indoor unit and drip l Operation outside this humidity or temperature range may cause a safety device to disable the system NOTE Prepara...

Page 49: ...ur 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 modeoperation This operation dehumidifies the indoor air when it is humid Note on AUTO operation In AUTO operation the system selects a temperature setting and an appropriate mode COO...

Page 50: ...used before POWERFUL operation Press n To cancel POWERFUL operation Press Notes on POWERFUL operation l In COOL and HEAT mode To maximize the cooling and 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 l In DRY mode The temperature setting is lowered by 3 C and the air flow ra...

Page 51: ...ATTENTION Notes on flap angles l When SWING is selected the flap swinging range depends on the operation mode See the figure l The real flap angles are differ from the display of remote controller Press SWING l Every time the button is pressed appears or disappears The flap automatically swings up and down Adjusting the Air Flow Direction l Always use a remote controller to adjust the flap angle I...

Page 52: ...tting reaches the point you like l Every pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly ON TIMER operation 1 2 3 Combining ON TIMER and OFF TIMER l A sample setting for combining the two timers is shown below Press CANCEL n To cancel the timer Then the TIMER lamp goes off Then the TIMER lamp lights up l Check t...

Page 53: ...ontrol With it temperature is fluctuated within a 1 C range of the set temperature The 1 f fluctuation is comfortable rhythm existed in the natural world refer to What s the 1 f fluctuation l Air blow is the lowest when the fan is set to AUTO l If you don t like this function change the operation mode See page 41 What is 1 f fluctuation It seems irregular but there seems to be a self resemblance r...

Page 54: ...rmaloperation The sensor lamp lights up again Intelligent Eye is useful for Energy Saving Save operation l Change the temperature 2 C in heat 2 C in cool 1 C in dry mode from set temperature l Decrease the air flow rate slightly in fan operation Noteson Intelligent Eye l Saving operation will not go on during powerful operation l Night set mode see page 44 will not go on during you use Intelligent...

Page 55: ...ying filters contact the service shop where you bought the air conditioner l Once the air purifying filter element gets dirty it is not reusable but must be thrown away l Operation with dirty air purifying filters cannot clean the air results in poor cooling may cause odour Cleaning the air filters It isrecommended toclean them every two weeks Push l Insert claws of the filters into slots of the f...

Page 56: ...o sides and lift it until it stops with a click 1 3 Clean the front grille l You may wipe it with a soft cloth soaked in water l Only neutral detergent may be used l You may wash the grille with water After washing dry it with cloth then dry it up in the shade 2 Remove the front grille l Supporting the front grille with one hand release the lock by sliding down the knob with the other hand l To re...

Page 57: ... the frost on the outdoor unit You should wait for about 3 to 8 minutes n In HEAT mode The frost on the outdoor unit melts into water or steam when the air conditioner is in defrost operation n In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips n This happens when the air in the room is cooled into mist by the cold air flow during cool...

Page 58: ...nlet or the outlet of the indoor and the outdoor units l Is the temperature setting appropriate l Are the windows and doors closed l Are the air flow rate and the air direction set appropriately l Is the unit set to the Intelligent Eye mode See page 46 l Are the air filters clean l Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or t...

Page 59: ...Abnormality 61 5 6 Operation Halt Due to Detection of Thermistor or Related Abnormality 62 5 7 Faulty Indoor Unit PCB 63 5 8 Faulty Indoor Unit PCB 64 5 9 Power Supply Abnormalities or Faulty Indoor Printed Circuit Boards 65 5 10 Signal Transmission Error Between Indoor and Outdoor Units 66 5 11 Operation Halt Due to Detection of CT Error 67 5 12 Operation Halt Due to Thermistor Error or Disconnec...

Page 60: ...device of the indoor or outdoor unit is activated or when the thermistor malfunctions disabling equipment operation 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 ON OFF Indicator lamps Operation lamp green Air outlet RL029 Si 86 book Page 52 Friday June 23 20...

Page 61: ...ng green LED indicates normal equipment condition and the OFF condition of the red LED indicates normal equipment condition Troubleshooting with the green LED The LED A of the outdoor unit indicate microcomputer operation condition Even after the error is canceled and the equipment operates in normal condition the LED indication remains Si 86 book Page 53 Friday June 23 2000 10 26 AM ...

Page 62: ...ing operation cannot be used when the outside temperature is 30 C or higher only for feat pump model and cooling operation cannot be used when the outside temperature is below 0 C Diagnosis with indoor unit LED indication Diagnosis with outdoor unit LED indication 58 Some indoor units do not operate Check the type of the indoor units Check to make sure that the indoor unit type is compatible with ...

Page 63: ...P P4 4 4 4 6 A A A A6 6 6 6 16 A A A A1 1 1 1 26 L L L L3 3 3 3 7 E E E E5 5 5 5 17 C C C C4 4 4 4 27 L L L L4 4 4 4 8 L L L LC C C C 18 C C C C5 5 5 5 28 H H H H6 6 6 6 9 C C C C9 9 9 9 19 H H H H9 9 9 9 29 H H H H7 7 7 7 10 U U U U0 0 0 0 20 J J J J6 6 6 6 30 U U U U2 2 2 2 C ON AMPM AMPM TEMP ON OFF MODE SLEEP SENSOR ON OFF TIMER FAN SWING CANCEL POWERFULL Transmitter It sends signals to the in...

Page 64: ...or or related abnormality C C C C4 4 4 4 Heat exchanger temperature thermistor abnormality C C C C9 9 9 9 Room temperature thermistor abnormality C C C CA A A A Discharge air temperature thermistor abnormality Outdoor Unit E E E E6 6 6 6 Compressor startup error E E E E8 8 8 8 Inverter units Input overcurrent H H H H8 8 8 8 CT or related abnormality H H H H9 9 9 9 Outside air thermistor or related...

Page 65: ... A A A5 5 5 5 Operation halt due to the freeze protection function or high pressure control heat pump model only 60 A A A A6 6 6 6 Faulty fan motor AC motor stop AC motor 61 C C C C4 4 4 4 Heat exchanger temperature thermistor or related abnormality 62 C C C C9 9 9 9 Suction thermistor or related abnormality 62 C C C CA A A A Discharge thermistor or related abnormality 62 Faulty indoor unit PCB 63...

Page 66: ...ndoor unit 5 3 3 4 4 U U U U0 0 0 0 Operation halt due to detection of insufficient gas 5 4 3 4 3 E E E E5 5 5 5 Abnormal discharge pipe temperature Operation halt due to IT activation 5 3 4 4 3 E E E E6 6 6 6 Operation halt due to detection of compressor startup error 69 5 3 3 3 4 Operation halt due to radiation fin temperature rise Protection of driver overheating 5 4 4 3 3 H H H H8 8 8 8 Operat...

Page 67: ...unit Malfunction Decision Conditions When there is no zero cross detection in approximately 10 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Control connector S35 and S26 Connector connection check note YES Is it normal NO Correct connections Replace PCBs 1 and or 2 3 RF001 Si 86 book Page 59 Friday...

Page 68: ... C Freeze protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Supposed Causes Operation halt due to clogged air filter of the indoor unit Operation halt due to dust accumulation on the indoor unit heat exchanger Operation halt due to short circuit Detection error due to faulty indoor unit heat exchanger thermistor Detection error due to faulty indoor un...

Page 69: ...lt due to faulty capacitor of the fan motor Detection error due to faulty indoor unit PCB 1 Troubleshooting Check No 16 Rerer to P 83 Rotate the fan by hand Check No 16 Check hall IC Operate the fan Does it rotate NO Does it rotate smoothly Is there an output Is it at the rated voltage Is there conductivity NO Check the capacitor s conductivity Check the fan motor voltage immediately after re star...

Page 70: ...eration reference When above about 212 C less than 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 5 Refer to P 79 C C C C4 4 4 4 Heat exchanger temperature thermistor C C C C9 9 9 9 Suction air thermistor C C C CA A A A Discharge air thermistor Check th...

Page 71: ...ocomputer program is in abnormal condition due to an external factor Noise Momentary voltage drop Momentary power failure etc Faulty indoor unit PCB Troubleshooting Turn on the power again Check the grounding earth YES Replace the indoor unit PCB Provide proper grounding The malfunction may be caused by an external factor rather than defective parts Locate the cause of the noise etc and correct th...

Page 72: ...hod of Malfunction Detection The condition of the transmission circuit for indoor outdoor signal transmission is detected Malfunction Decision Conditions When the transmission circuit remains ON Supposed Causes Faulty indoor unit PCB Troubleshooting Replace the indoor unit PCB Si 86 book Page 64 Friday June 23 2000 10 26 AM ...

Page 73: ...door unit does not properly receive signals transmitted by the outdoor unit in indoor outdoor signal communications Supposed Causes Display disabled by fault power supply Faulty signal transmitting receiving circuit in indoor printed circuit boards 1 and 2 Microcomputer program is in abnormal condition due to an external factor Noise Momentary voltage drop Momentary power failure etc Faulty indoor...

Page 74: ...ed power supply waveform Indoor unit outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units wire No 2 Troubleshooting Check No 13 Refer to P 82 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 conn...

Page 75: ...the malfunction including the other emergency stops Supposed Causes Faulty power transistor Breaking of wire or faulty connection of internal wiring Faulty outdoor PCB 1 Troubleshooting Check No 3 Refer to P 76 Check No 11 Refer to P 81 Check No 3 Check capacitor voltage Is operation current on power live like as right figure NO NO NO Is resistance value normal NO Check rectifier input voltage Is ...

Page 76: ...nction Decision Conditions When the thermistor input during compressor operation is more than 4 96 V or less than 0 04 V Value changes depends on models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check No 5 Refer to P 79 J J J J3 3 3 3 Discharge pipe thermistor J J J J6 6 6 6 Outdoor unit heat exchanger thermistor H H H H9 9 9 9 Outside air thermistor ...

Page 77: ...sed Causes Startup error due to faulty compressor Startup error due to faulty outdoor unit PCB Startup error due to closed stop valve Detection error due to faulty outdoor unit PCB Troubleshooting Check No 3 Refer to P 76 Check No 4 Refer to P 78 Check No 15 Refer to P 82 Check No 3 Power transistor check Is it normal Are the U V and W phases output in good balance Does the error occur 16 times co...

Page 78: ...crocomputer from output overcurrent detection circuit When error occurs 16 times system shuts down Condition for error counter reset When compressor operates for 5 minutes without output overcurrent Supposed Causes Overcurrent due to faulty power transistor Overcurrent due to faulty internal wiring Overcurrent due to supply voltage abnormality Overcurrent due to faulty PCB Overcurrent due to close...

Page 79: ...n pressures etc for an extended period of time Possible causes n Momentary supply voltage drop n Excessive load on compressor motor n Shorting in electric circuit due to contact Is stop valve fully open NO Are outputs of phases U V and W balanced NO Is supply voltage at related value YES Mechanical locking of compressor shorting of coil phases wire breakage Check No 3 Power transistor check Check ...

Page 80: ...posed Causes Microcomputer program run away due to an external factor Noise Momentary voltage drop Momentary power failure etc Faulty outdoor unit PCB Troubleshooting Turn on the power again Check the grounding YES YES Replace the outdoor unit PCB Provide proper grounding The malfunction may be caused by an external factor rather than defective parts Locate the cause of the noise etc and correct t...

Page 81: ...ocomputer program run away due to an external factor Noise Momentary voltage drop Momentary power failure etc Faulty outdoor unit PCB Troubleshooting Check No 13 Refer to P 82 Is the grounding proper Is there any disturbance Is it normal NO NO NO NO Turn off the power remove No 2 of the terminal board and turn the power on again Check the grounding Turn the power off and back on again Does the sam...

Page 82: ...alfunction Decision Conditions When the CT input remains above the value shown in the below table for 2 5 seconds during compressor operation Table for constant Supposed Causes Over current due to faulty compressor Over current due to faulty power transistor Over current due to faulty electrolytic capacitor of the main inverter circuit Over current due to faulty PCB 1 Detection error due to faulty...

Page 83: ...e the input current Check the conductivity of the electrolytic capacitor of the main inverter circuit YES YES Replace the outdoor unit PCB Replace the outdoor unit PCB Replace the outdoor unit PCB Replace the electrolytic capacitor Is the measured value higher than the input current stop setting NO YES Is there conductivity NO YES Are the U V and W phases output in good balance NO NO MF022 Is it n...

Page 84: ...l judgment Power transistor check Measuring positions 2 Capacitor voltage check Measuring method Before measuring operate the unit for several minutes then shut down the operation by force using the circuit breaker If the unit is shut down using the remote controller instead of the circuit breaker the capacitor discharges the electric load thus disallowing accurate measurement Note The charge sect...

Page 85: ...and terminals in the same way as described in section 1 Set the multi tester to DC and VOLTAGE RANGE before measurement Since capacitor and are connected to power transistor and capacitor voltage can be measured at the power transistor and terminals Si 86 book Page 77 Friday June 23 2000 10 26 AM ...

Page 86: ...easure the output voltage of the red yellow and blue wires using a tester 1 Conduct forced cooling operation with the equipment in the condition shown in Fig 1 2 Measure the voltage between the operation start when the outdoor unit fan starts rotating to operation halt caused by an CT error about 15 seconds 3 Reset the power and repeat steps 1 to 3 for each phase of U V V W and W U 4 If the voltag...

Page 87: ...s whose thermistor is directly equipped on the printed circuit board 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 Remove the signal receiver and the display printed circuit board disconnect the connector too and then measure ohm by an ohmmeter at the both ends The relation between temperature a...

Page 88: ...ion 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 MF030 Abnormal YES YES YES Does the discharged air from other outdoor unit cause an increase...

Page 89: ...minal for digital tester Positive terminal of tester negative terminal for digital tester Normal resistance Several KΩ to MΩ Several KΩ to MΩ Unacceptable resistance 0 or 0 0 0 or Discharge pressure check Open the stop valve Replace the pipe installed at the site Clean Replace the compressor MF031 YES YES YES NO NO NO At the heat exchanger and air filter dirty Is the stop valve open Is the connect...

Page 90: ...ne wave Fig 1 Check to see if there is waveform disturbance near the zero cross sections circled in Fig 2 6 1 8 Inverter Units Compressor refrigerant System Check No 15 Check No 15 Fig 1 Fig 2 Compressor refrigerant system check Faulty compressor Replace the compressor To next step MF033 YES NO Does the equipment stop frequency due to startup error Check if there are any damage on refrigerant pipi...

Page 91: ...ck the following Output voltage of about 5 V between pins 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 faulty PCB Replace the PCB Failure of 2 faulty hall IC Replace the fan motor Both 1 and 2 result Replace the PCB The connector has 3 pins and there are two patterns of lead wire colors Si 86 book Page 83 Friday June 23 2000 10 26 AM ...

Page 92: ...Check SIE 86 84 Service Diagnosis Si 86 book Page 84 Friday June 23 2000 10 26 AM ...

Page 93: ... 97 1 6 Install of Drain Plug 99 1 7 Removal of Fan Rotor and Motor 100 2 For RK25J RK35J RX25J RX35J 103 2 1 Removal of External Casing 103 2 2 Removal of Bellmouth and Left Side Plate 105 2 3 Removal of PC Board and Switch Box 106 2 4 Removal of Propeller Fan and Fan Motor 111 2 5 Removal of Compressor Noise Absorption Pad 112 2 6 Removal of Partition Plate and Reactor 114 2 7 Removal of Four wa...

Page 94: ...pushing for 5 seconds a forced cooling operation will be carried out for approx 15 minutes Illustrations show D series 2 Removing air filters 1 Pull protrusions on left and right sides of panel with fingers and open front grille all the way 2 Lift center section of air filter and disengage hooks Remove air filter by pulling forward Left and right filters are interchangeable To re install insert ai...

Page 95: ...ition higher than it will stop Support the front panel by one hand while remove the rotation axis at the upper center by the other hand And pull out the front panel forward to remove 2 Remove front panel from the unit 3 When restoring the air filter make sure that the projection parts on the panel are in the guide groove and then shut the panel Step Procedure Points Si 86 book Page 87 Friday June ...

Page 96: ...ing of service cover 1 Remove a service cover mounting screw Open service cover upward A switch for field setting is not provided in particular 2 Removal of front grille assembly 1 Remove the two screws in the right and the left which fix the main body with the front grille Screw stoppers inside the flap which were equipped in the existing models are not provided Si 86 book Page 88 Friday June 23 ...

Page 97: ...ugh a clearance between the front grille and the heat exchanger At the upper part there are two hooks in the left and the right Disengage the hooks by pressing knobs with a screwdriver 3 The front grille can be removed in a manner to pull out the upper part forward and lift up the lower part When restoring the grille Make sure whether each hook is set as it was Step Procedure Points Si 86 book Pag...

Page 98: ...lies before disassembling work Step Procedure Points 1 Remove horizonal blade 1 Lift horizontal blade to open position Screw stoppers inside the flap which were equipped in the existing models are not provided 2 Disengage horizontal blade from blade retaining section 3 Bend blade slightly and remove it from the unit Si 86 book Page 90 Friday June 23 2000 10 26 AM ...

Page 99: ...e tip while rotating it 2 Restore the two fixed parts of the horizontal blade onto the hook 2 Removal of vertical blade 1 Disengage the vertical blade s joint from the fixed plate 2 Remove the blade forward Five vertical blades are integrated with the joint rod so only one blade can t be exchanged Step Procedure Points Si 86 book Page 91 Friday June 23 2000 10 26 AM ...

Page 100: ...ocedure Points Remove front grill 1 Remove switch box 1 Disconnect the connection wires 2 Disconnect connectors S1 and S7 of fan motor 3 Disconnect one connector S6 of swing motor Pay attention to the direction of the retainer of the thermister so that the retainer will not touch the harness same as the existing models 4 Remove heat exchanger thermistor Si 86 book Page 92 Friday June 23 2000 10 26...

Page 101: ...w on the terminal strip The switch box can be removed instead of disengaging the terminal strip 6 Remove a screw on the switch box 7 Pull up the switch box forward to remove A hook is provided on the behind Step Procedure Points Si 86 book Page 93 Friday June 23 2000 10 26 AM ...

Page 102: ...uit board 1 Remove the shelter 2 Disengage the front plate of the switch box Disengage the knobs by pushing the two hooks at the top and the bottom 3 Sliding to the left the front part of the switch box can be removed Step Procedure Points Si 86 book Page 94 Friday June 23 2000 10 26 AM ...

Page 103: ...FTK35J FTX25J FTX35J Removal Procedure 95 4 Disengage the four knobs on the back of the display printed circuit board 5 Display printed circuit board Step Procedure Points Si 86 book Page 95 Friday June 23 2000 10 26 AM ...

Page 104: ...th the power supply printed circuit board 3 Remove swing motor assembly 1 To remove swing motor assembly remove two screws Manual adjusting for the vertical blades Provide a supporter so that the joint link will not drop off in case the horizontal blade assembly is removed Step Procedure Points Si 86 book Page 96 Friday June 23 2000 10 26 AM ...

Page 105: ...abnormal temperature rise in refrigerating cycle and this results in pipe rupture or personal injuries Pay attention so that the residual drain will not make a floor dirty In case that a drain hose is buried inside a wall remove it after the drain hose in the wall is pulled out 1 Remove the drain hose Make curing so that the residual drain water will not leak out 2 Disengage the insulation tube an...

Page 106: ...xchanger foward The hooks are symmetrically placed in the right and the left Lifting the heat exchanger slightly upward to the right the left hook comes to be disengaged easily 7 Lift and remove heat exchanger Caution When removing or re installing heat exchanger be sure to wear protective gloves or wrap heat exchanger with cloths Fins can cut fingers Step Procedure Points Si 86 book Page 98 Frida...

Page 107: ...ing work Step Procedure Points 1 Disconnect drain hose The drain pan is integrated with the bottom plate 2 Pull out the drain plug in the left on the drain pan by hand 3 Insert the drain hose Push it into the inner part firmly 4 Push the drain plug into the right by Allen wrench Push it into the inner part firmly Si 86 book Page 99 Friday June 23 2000 10 26 AM ...

Page 108: ...oval of Fan Rotor and Motor Procedure Warning Be sure to turn off all power supplies before disassembling work Step Procedure Points Remove heat exchanger 1 To remove right side panel remove three screws 2 Disengage hook Si 86 book Page 100 Friday June 23 2000 10 26 AM ...

Page 109: ...25J FTX35J Removal Procedure 101 3 Loosen the hexagon head set screw on the fan rotor 4 Remove the motor and fan rotor 5 Remove a screw on the left side panel Step Procedure Points Si 86 book Page 101 Friday June 23 2000 10 26 AM ...

Page 110: ...e 6 Disengage a hook from the backward 7 Since the fan bearing is made of rubber push it strongly off from the inside The bearing can be removed just as the left side plate is attached with Step Procedure Points Si 86 book Page 102 Friday June 23 2000 10 26 AM ...

Page 111: ...cover downward to remove The forced cooling operation in the pumping down mode can be carried out by pushing the operation switch on the main unit for five seconds The existing models can do it through the switch on the PC board just as well The layout of the connection ports for the flares has been changed to horizontal position from vertical position 2 The top plate and the front plate are const...

Page 112: ...left side plate and the bellmouth can be removed all at once When restoring the top plate move it horizontally and get it down for the easy work 5 The front plate and the left side plate can be removed when the one fixed screw is removed Sectional view at the front Step Procedure Points Top plate Left side plate the top plate edge is gotten into this groove RR064 Si 86 book Page 104 Friday June 23...

Page 113: ... two screws and four hooks Remove the bellmouth beginning the front plate after removing the two screws which are set below 2 Remove the two screws and pull the bellmouth forward to remove as the four hooks are provided Slide the bellmouth in the arrow direction to disengage the hook B 3 The rib is equipped on the left side plate and it can be disengaged when the one fixed screw is removed Si 86 b...

Page 114: ...as five hooks 1 Remove the one fixed screw and the four portions of hooks A and B for removing the shelter 2 Remove the shelter Be sure to avoid forgetting to restore the shelter and to avoid loosing or damaging it 2 To remove the wire harness 1 This shows the printed circuit board A electronic expansion valve S20 is not provided for the overseas models because a capillary tube is adopted Si 86 bo...

Page 115: ... Disconnect the two connectors of the reactor Further disengage the lead wires from the hook There is another reactor rocated on bottom frame for JV1NB model 4 Disconnect the connectors of the compressor and of the four way valve Step Procedure Points Si 86 book Page 107 Friday June 23 2000 10 26 AM ...

Page 116: ...X35J SIE 86 108 Removal Procedure 5 Disconnect the connector S91 of the thermister 6 Remove the ground wire 7 Disconnect the wires from the terminal strip Step Procedure Points Si 86 book Page 108 Friday June 23 2000 10 26 AM ...

Page 117: ...iating fins are available underneath remove the screw while supporting the board by hand 1 Remove the three screws fixing the printed circuit board 2 Disconnect the wires from capacitor 3 The printed circuit board can be disengaged then Step Procedure Points Si 86 book Page 109 Friday June 23 2000 10 26 AM ...

Page 118: ...X25J RX35J SIE 86 110 Removal Procedure 4 To remove the switch box 1 Remove the three screws fixing the switch box 2 Lift and remove the switch box Step Procedure Points Si 86 book Page 110 Friday June 23 2000 10 26 AM ...

Page 119: ...loosing or damaging it When restoring match the mark of the propeller fan with the D cut of the motor shaft The fan should be restored so that the mark will be at upper part of the fan motor 1 The lead wires of the fan motor can be disengaged by passing through the clearance between the heat exchanger and the switch box 2 The propeller fan can be removed when the washer faced nut M8 is removed 3 R...

Page 120: ...oving the right side plate 2 Lift the right side plate to disengage the hooks Insert the three hooks for the restoration 2 To remove the noise absorber Since the slit prepared for the piping connection on the noise absorption pad is torn easily remove the pad carefully When restoring the noise absorption pad should pass the internal side of the piping 1 Untie the string fixing the body of the comp...

Page 121: ...he noise absorption a Since the slit prepared for the piping on the noise absorption pad is torn easily remove the pad carefully 4 Pull out the body of the noise absorption pad b When restoring the noise absorption pad should pass the internal side of the piping Step Procedure Points Si 86 book Page 113 Friday June 23 2000 10 26 AM ...

Page 122: ...rning Be sure to turn off all power supplies before disassembling work Step Procedure Points 1 To remove the partition plate 1 Disengage the lead wires from the wire clip 2 Remove the two screws fixing the partition plate 3 Pull the partition plate upward to remove Si 86 book Page 114 Friday June 23 2000 10 26 AM ...

Page 123: ...val Procedure 115 4 When restoring the partition plate put the hook into the bottom frame 2 To remove the reactor 1 The reactor can be removed by removing the fixed screw Step Procedure Points Si 86 book Page 115 Friday June 23 2000 10 26 AM ...

Page 124: ...ion plate so as not to be burnt out by a gas brazing machine 2 Remove the thermister for the heat exchanger The thermister for heat exchanger is fixed by a tie lap at one portion Be sure to fix the thermister on the original position when restoring Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas 3 Remove the four way valve s co...

Page 125: ...ating it keeps below 120 degree C Be careful so as not to break pipes by pressing the pipes excessively by a plier when withdrawing the piping 4 Provide a protective sheet or a steel plate so that the brazing flame can t influence the circumstance around the four way valve 5 Heat up the four portions of brazing parts on the four way valve Remove the four way valve in the order of a b c d 6 Heat up...

Page 126: ...pare wet cloth so as to extinguish fire quickly Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas Caution Be careful about pipes and so on which were heated up by a gas brazing machine so as not to get burnt on your hands Pay attention so that the heat exchanger s fins will not be burnt 3 Remove the nut by means of an open end wr...

Page 127: ...SIE 86 Others 119 Part 7 Others 1 Others 120 1 1 Explanation 120 Si 86 book Page 119 Friday June 23 2000 10 26 AM ...

Page 128: ... Remote Controller 1 Press ON OFF button to turn on the system 2 Simultaneously press center of TEMP button and MODE buttons 3 Press MODE button twice T will appear on the display to indicate that Trial Operation mode is selected 4 Trial run mode terminates in approx 15 minutes and switches into normal mode To quit a trial operation press ON OFF button After trial operation is complete set the tem...

Page 129: ...g when using the KRP413A1S Contact connection centralized control PC board Note The power failure recovery function is controlled by the ON signal from the centralized control PC Board The following may occur if the unit is used without cutting jumper JC If the unit was running when a power failure occurred it may not resume operation after recovering from a power failure 1 1 4 Dry Keep Change ove...

Page 130: ...to adjust the angle Aim so that the sensor is pointing to the center of the room or to the part of the room that is most frequently used After adjusting the angle gently wipe the sensor with a clean cloth being careful not to scratch the sensor Caution Do not hit or violently push the Inteligent eye sensor This can lead to damage and malfunction Do not place large objects near the sensor Also keep...

Page 131: ... 86 Appendix 123 Part 8 Appendix 1 Piping Diagram 124 1 1 Indoor Unit 124 1 2 Outdoor Unit 125 2 Wiring Diagram 127 2 1 Indoor Unit 127 2 2 Outdoor Unit 129 Si 86 book Page 123 Friday June 23 2000 10 26 AM ...

Page 132: ...r Unit 1 1 1 Cooling Only and Heat Pump FIELD PIPING FIELD PIPING CuT 6 4CuT INDOOR UNIT 7 9CuT CROSS FLOW FAN FAN MOTOR M 7 0CuT 7 0CuT 9 5CuT HEAT EXCHANGER 7 0CuT 7 0CuT FTX35 FTK25 FTX25 FTK35 12 7 9 5 4D019960 Si 86 book Page 124 Friday June 23 2000 10 26 AM ...

Page 133: ...LARY TUBE WITH SERVICE PORT 9 5CuT 6 4CuT GAS STOP VALVE STOP VALVE LIQUID FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 3D019958 7 9CuT 9 5CuT COMPRESSOR OUTDOOR UNIT PROPELLER FAN 7 9CuT 7 9CuT M HEAT EXCHANGER ACCUMLATOR 7 9CuT 12 7CuT 7 9CuT CAPILLARY TUBE 12 7CuT WITH SERVICE PORT GAS STOP VALVE 6 4CuT STOP VALVE LIQUID FIELD PIPING FIELD PIPING 6 4CuT 12 7CuT 3D019956 Si 86 book Page 125 Friday Ju...

Page 134: ...2 9 5CuT 6 4CuT WITH SERVICE PORT GAS STOP VALVE 6 4CuT STOP VALVE LIQUID FIELD PIPING FIELD PIPING 9 5CuT 6 4CuT 3D019959 9 5CuT OUTDOOR UNIT 7 9CuT 7 9CuT MUFFLER PROPELLER FAN HEAT EXCHANGER 7 9CuT M 7 9CuT COMPRESSOR REVERSING SOLENOID 12 7CuT VALVE REFRIGERANT FLOW 7 9CuT ACCUMLATOR 7 9CuT COOLING HEATING 9 5CuT CAPILLARY TUBE WITH SERVICE PORT GAS STOP VALVE 6 4CuT STOP VALVE LIQUID FIELD PI...

Page 135: ...indoor C70 S7 PROTECTIVE EARTH RUNNING CAPACITOR S1 C70 1 M M1F PCB1 PCB3 FU S1 S36 H1P H3P R1T R2T M1F M1S S1W X1M 3 15A FU H2 H3 H1 PRINTED CIRCUIT BOARD THERMISTOR CONNECTOR OPERATION SWITCH SW7 TERMINAL STRIP SWING MOTOR FAN MOTOR PILOT LAMP FUSE GRN WHT RED BLK YLW X1M 3 1 2 NOTE THE TURNED RESTART ON AGAIN MAIN THAT OFF FIELD AUTOMATICALLY CAUTION POWER OPERATION AND WIRING THEN SUPPLY WILL ...

Page 136: ... C70 RUNNING CAPACITOR PROTECTIVE EARTH S7 S1 C70 1 M M1F M1F M1S H1P H3P R1T R3T FU X1M S1W S1 S36 PCB1 PCB3 3 15A FU H2 H3 H1 GRN THERMISTOR PRINTED CIRCUIT BOARD PILOT LAMP OPERATION SWITCH SW7 FUSE FAN MOTOR CONNECTOR SWING MOTOR TERMINAL STRIP WHT RED BLK YLW X1M 3 2 1 NOTE THE TURNED RESTART ON AGAIN MAIN FIELD THAT CAUTION OFF AUTOMATICALLY POWER WIRING OPERATION AND THEN SUPPLY 2 1 3 3D020...

Page 137: ...R REACTOR SIGNAL COIL FUSE LIVE PROTECTIVE EARTH outdoor X2M X1M N L 3 1 2 GRN GRN RED BLK YLW YLW F2U Z1C Z4C GRN WHT RED BLK YLW FG1 S70 N S L V2 SA1 V3 PCB1 X1M X2M Z1C Z2C Z3C Z4C TRM1 TAB1 TAB2 V1 V2 V3 6 C35 RED 1 L1 M 3 WHT M1F 1 MRH BLK L4 L3 CONNECTOR VARISTOR FERRITE CORE TERMINAL STRIP TRANSISTOR MODULE V1 CT1 3 15A F1U MRM10 MRM20 Q1L 1 BLK 2 DB1 BLK S40 OUTDOOR L1R TAB1 1 R1T BLK t BL...

Page 138: ...VE EARTH 3 outdoor X1M X2M N 1 L 3 2 GRN GRN RED BLK YLW YLW F2U Z4C Z1C Y1R TAB1 TAB2 TRM1 V1 V2 V3 X1M X2M Z1C Z2C Z3C Z4C GRN WHT RED BLK YLW FG1 S70 N S L V2 C35 PCB1 6 V3 SA1 RED 1 L1 M 3 WHT REVERSING SOLENOIDE VALVE COIL CONNECTOR TRANSISTOR MODULE VARISTOR TERMINAL STRIP FERRITE CORE M1F 1 MRH BLK L4 L3 1 V1 CT1 Y1R BLK 3 BLK MRC W F1U S80 MRM10 3 15A MRM20 Q1L 1 BLK 2 DB1 BLK OUTDOOR S40 ...

Page 139: ...nverter Units Compressor refrigerant System Check 82 Inverter Units Hall IC Check 83 J J3 J6 H9 68 L L5 70 Location of Operation Lamp 52 M Method of Operating Air Conditioners Individually When Two Units are Installed in One Room 121 O Operating Modes 12 Operation Halt Due to Compressor Startup Error 69 Operation Halt Due to Detection of CT Error 67 Operation Halt Due to Detection of Input Over Cu...

Page 140: ...n Motor 111 Removal of Switch Box PC Board and Swing Motor 92 S Service Check Function 55 Signal Transmission Error Between Indoor and Outdoor Units 66 T Test Run from The Remote Controller For Heat Pump Model Only 120 Thermistor Resistance Check 79 Troubleshooting Indoor Units 57 Outdoor Units 58 Troubleshooting with The LED Indication 53 Troubleshooting with The Operation Lamp 52 U U4 65 66 W We...

Page 141: ...1 4 P C B 1 5 Functions of Thermistors 10 G Good Sleep Cooling Control J Type 25 I Input Current Control H J Type 27 Installation Condition Check 80 Instruction FTK25 35J FTX25 35J 36 Inverter features 14 Inverter Units Compressor refrigerant System Check 82 Inverter Units Hall IC Check 83 L Location of Operation Lamp 52 O Operation Halt Due to Compressor Startup Erro 69 Operation Halt Due to Dete...

Page 142: ...l operation from Remote Controller 120 Troubleshooting with The LED Indication 53 W Wet Operation Protection H J Type 32 Wide angle Flaps Diffuser Louvres and Autoswing 17 Wiring Diagram Indoor Unit 127 Outdoor Unit 129 Si 86 book Page iv Friday June 23 2000 10 26 AM ...