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AIR-CONDITIONER

1. local parts When install the refrigerant pipes from the rear Fig 7 2 4 S xd Ji 30 PPM f i T 0 0 Failure to firmly install the unit may result in personal injury and 100 property damage if the unit falls T Incase of block brick concrete or similar type walls make 5 mm dia o ic o holes in the wall 69 a e Insert clip anchors for appropriate mounting screws 990 909 NOTE Th ter of the pi hole is above the BOW Install the installation plate using 4 to 6 pieces of mounting screw securing four corners with screws Fig fuer 7 2 4 Electrical Work 1 After determining the pipe hole position on the mounting plate 1 The supply voltage must be the same as the rated voltage of the air drill the pipe hole 65 mm at a slight downward slant to the outdoor conditioner side 2 Prepare the power source for exclusive use with the air conditioner e When drilling a wall that contains a metal lath wire lath or metal plate e Wire type More than HO7RN F or 245IEC66 1 0 mm or more be sure to use a pipe hole brim ring sold separately _ 28 WIRT This appliance can be connected to the mains in either of the following two ways 1 Connection to fixed wiring A switch or circuit breake which disconnects all poles and has a contact separation of at least 3 mm must be incorpo rate in the fixed wiring An approved circuit breaker or Switches must used 2
2. Is the voltage 14 31 4V DC Refer to lt Primary check gt or this problem is one step short of power P C board block at C50 Are DC 5V Are DC 5V DC 12V Turn off breaker or DC 12V supplied once and turn it supplied to main on again after to main P C board removing motor P C board P C board Microcomputer is defective Regulator IC 1 08 IC11 are defective Replace motor e Be sure to disconnect the motor connector CN10 after shut off the power supply or it will be a cause of damage of the motor 38 FILE NO SVM 05019 2 Power is not turned on though Indoor P C board is replaced lt Confirmation procedure gt Turn on power supply Does operation lamp flash NO Is wired correctly to white and black lead wires of terminal board YES To item of Power is not turned on 39 3 Only the indoor fan does not operate For 10 13k lt Check procedure gt Shut off the power supply once Turn the power supply Does the fan stop in NO no operating status YES Start the operation with low fan setting in cool operation NO Does the fan rotate YES Change the setting of cooling to high fan Does the fan speed NO become higher YES Normal Control P C board is defective Does AC 120 V lead of fan motor YES or higher voltage apply to between
3. All off Displayed when error is detected Check 5 serial LED 1 Check P C board Disconnection or short circuit of discharge temp sensor All off Displayed when error is detected 1 Check discharge temp sensor TD 2 Check board Outdoor fan drive system error All off Displayed when error is detected Position detect error over current protective operation of outdoor fan drive system fan lock etc Replace P C board or fan motor Not displayed Outdoor temp sensor error Operation continues 1 Check outdoor temp sensor TO 2 Check board Outdoor P C board Compressor drive output error Compressor error lock missing etc Break down All off Displayed when error is detected Check 5 serial LED When 20 seconds passed after start up position detect circuit error occurred Replace compressor Error exclusive for multiple type All off Displayed when error is detected Check 5 serial LED 1 Miswiring of connecting wire of A B C D rooms in indoor outdoor units 2 Check gas leakage 3 Check disconnection of sensor 4 Electronic control valve error Others including compressor Compressor does not rotate Current protective circuit does not operate when a specified time passed after compressor had been activated All off Displayed when error is detected Trouble on compressor 2
4. 7 2 5 FILE NO SVM 05019 7 2 6 Piping and Drain Hose Installation Piping and Drain Hose Forming Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material Rear right s Bottom left Left gt Right 1 Die cutting Front panel slit Cut out the slit on the left or right side of the front panel for the left or right connection and the slit on the bottom left or right side of the front panel for the bottom left or right connection with a pair of nippers Changing drain hose Piping preparation Die cutting Front panel slit 2 Changing drain hose For left connection left bottom connection and rear left connection s piping it is necessary to change the drain hose and drain cap How to remove the Drain Cap Clip drain cap by needle nose plier and pull out oe zi i Fig 7 2 6 How to install the Drain Hose Firmly insert drain hose connecting part until hitting on a heat insulator Heat insulator a A c Fig 7 2 7 How to fix the Drains Cap 1 Insert hexagonal wrench 4 mm in a center head 2 Firmly insert drains cap No gap 2 T i Do not apply lubricating oil refrigerant Q machine oil when inserting the drain cap Application causes deterioration and drain leakage of the plug Inse
5. Manual Fig 6 2 9 Cold draft preventing control NOTES 1 Stops for 2 minutes after thermostat OFF 2 24 C when the set temp is 24 C or more Set temp when the set temp is below 24 C FILE NO SVM 05019 3 SUL Super ultra low In star ting and in stability In star ting In stability e When 12 to 25 minutes passed after operation start and room temp is higher than set temp 3 C e When 25 minutes or more passed after operation start Until 12 minutes passed after operation start When 12 to 25 minutes passed after operation start and room temp is 3 C or lower than set temp FAN e Room temp e Room temp gt Manual Settemp 4 C Set temp 3 5 C The outdoor unit controls the outdoor fan based upon the operation signal sent from the indoor unit and also controls revolution speed of the compres sor motor The power coupler 1C20 for four way valve is turned on and turned off in defrost operation 1 Heating capacity control Calculate the difference between temperature detected by room temp sensor every minute and the set temp set on Temp indicator and variation amount of room temp Then obtain the correction amount of the command signal and correct the current fre quency command signal 2 High temp release control If temperature of the indoor heat exchanger detected by the indoor heat exchanger sensor is 55 C or higher compressor motor spee
6. When compressor has been activated or reactivated it operates with Max 33 rps for 2 minutes and with Max 57 rps from 2 to 4 minutes passed When room temperature is lower than set temperature and indoor fan motor is operated at fan speed L as shown in Fig 6 2 2 while the outdoor unit stops 2 Prevent freezing control If temperature of indoor heat exchanger detected by the indoor heat exchanger sensor is 5 C or lower compressor motor speed is gradually lowered to prevent freezing of the indoor heat exchanger If temperature is 7 C or higher return the operation to the above item 1 3 Current release control The input current of compressor and outdoor fan motor Precisely inverter main circuit control section which occupy most of air conditioner input is detected by the outdoor current sensor and compressor motor speed is gradually lowered so that current value does not exceed 11 5A if current value exceeds 11 5A When the current value lowers to 11 04 return the operation to the above item 1 Comp motor speed down Comp motor speed keep Current value Normal control Fig 6 2 3 4 Outdoor temperature release control The outdoor temperature release is controlled by changing the current release points 14 2 and 13 7 in the above item according to temperature detected by the outdoor temperature sensor For example if the outdoor temperature is 43 C the value of current release p
7. o5 14 T C AMIEL HH HiPOWER ECO amp E Fig 7 2 23 wr MODE 8 Operate the unit at cooling operation mode MODE button for fifteen minutes or more Measure the temperature of the intake and COMFORT e discharge air Ensure the difference between AIRFLOW ENERGY m m the intake temperature and the discharge one suc FIX 5 Eco is more than 8 C TIMER gt eo 55 8 8 HK RESET CLOCK CHK button _ NOTE Three minutes protection feature A protection feature prevents the air conditioner from being activated for about 3 minutes when it is restarted immediately after operation or when the power switch is turned on 9 Check the remote controller operation The above remote controller is one for cooling When finished the check and test operation only model make sure to returnto REMOTE CONTROLLER Push the temporary switch with once again 10 Explain to the customer on the correct usage of air conditioner simple layman s terms 92 FILE NO SVM 05019 8 HOW TO DIAGNOSE THE TROUBLE The pulse modulating circuits are mounted to both indoor and outdoor units Therefore diagnose troubles according to the trouble diagnosis procedure as described below Refer to the check points in servicing written on the wiring diagrams attached to the indoor outdoor units 8 1 First Confirmati
8. 340V DC 15V 12V 5 V and TP2 GND GND GND 3 Between and 4 Between and 5 Between and AC power cord is defective Poor contact of the terminal plate Miss wiring of the power relay Capacitor C01 is defective Line filter LO1 is defective Resistor R05 is defective Diode 0 01 is defective Q14 ICO8 T01 are defective IC01 D16 T01 F02 are defective 1C01 IC11 T01 are defective Start the operation with the system which the time of the restart delay timer is shortened 1 All indicators light for 3 sec 2 Indicators do not indicate normally after approximate 3 sec Defective indicator or poor housing assembly CN13 Make the operation status by pressing once the 5 button 1 The time of the restart delay timer is shortened 2 Cool operation 3 Air volume AUTO 4 Make the setting temperature lower enough than room temperature 5 Continuous operation 1 Compressor does not operate 2 OPERATION lamp flashes The temperature of the indoor heat exchanger is abnormally low Poor contact of the heat exchanger sensor The connector is disconnected CNO1 3 Heat exchanger sensor main P C board are defective 4 Main P C board is defective Turn the power on after connecting the motor connector Start the operation with the following condition
9. BRW BROWN i i ERE TERMINAL PAREN INDOOR i OUTDOOR Yet YELLOW BLOCK p UNT i UNIT BLU BLUE BLK BLACK GRY GRAY pum ANGE BLK WHI RED GRN8YEL GREEN amp YELLOW RS MC MEER As A E A 235 Se En CN24 CN23 CN21 LINE PK FILTER I HEAT EXCHANGER St Lt ui 11 wea No SENSOR FUSE I m TW HI TC pu WHY Roe M2 VDO o Th TA T3 15A 5voe 250 Fan Motor T Drive circuit WP 004 S sm mwa re SY D S CN08 HA Dx AC FAN MOTOR JEM A Nem A Simple Check for Failure Diagnosis Check Item Diagnosis Result Check to see if the OPERATION indicator goes on OPERATION and off when the main switch or breaker is turned on INDICATOR Check the primary and secondary voltage of the transformer Check the power supply voltage between 1 and 2 Refer to the name plate a TERMINAL Check the primary and secondary voltage of the BLOCK transformer Check the fluctuating voltage between 2 and 3 15 60VDC fr FUSE Check to see if the fuse blows out 3 15A Check the R04 of the varistor Check the voltage at the No 4 pin on CN13 connector DC5V of the infrared receiver Check the transformer and the power supply circuit of the rated voltage A Check the voltage at the white lead of
10. Connection with power supply plug Attach power supply plug with power cord and plug it into wall outlet An approved power supply cord and plug must NC be used B Perform wiring works so as to allow a generous wiring capacity 7 2 5 Wiring Connection How to connect the connecting cable Wiring of the connecting cable can be carried out without removing the front panel 1 Remove the air inlet grille Open the air inlet grille upward and pull it toward you 2 Remove the terminal cover and cord clamp 3 Insert the connecting cable according to the local cords into the pipe hole on the wall 4 Take out the connecting cable through the cable slot on the rear panel so that it protrudes about 15 cm from the front 5 Insert the connecting cable fully into the terminal block and secure it tightly with screws 6 Tightening torque 1 2 N m 0 12 kgf m 7 Secure the connecting cable with the cord clamp 8 Fix the terminal cover rear plate bushing and air inlet grille on the indoor unit Be sure to refer to the wiring system diagram labeled inside the front panel Check local electrical cords and also any specific wiring instruc tions or limitations Cord clamp Terminal cover Terminal block Connecting cable foe w about 15 an Screw Connecting cable Earth line 10 mm 10 50 NOTE e Use stranded wire only Wire type HO7RN F or more Fig
11. HOLDER PIPE PLATE INSTALLATION TOSHIBA CARRIER THAILAND CO LTD 144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAM BOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND
12. Minimum revolution control 4 Contents of operation command signal Serial signal from outdoor unit controller to indoor unit controller The following signals are sent from the outdoor unit controller The current operation mode The current compressor revolution Outdoor temperature Existence of protective circuit operation For transferring of these signals the indoor unit controller monitors the contents of signals and judges existence of trouble occurrence Contents of judgment are described below Whether distinction of the current operation status meets to the operation command signal Whether protective circuit operates When no signal is received from the outdoor unit controller it is assumed as a trouble FILE NO SVM 05019 6 1 1 Capacity Control The cooling capacity is varied by changing compres sor motor speed The inverter changes compressor motor speed by changing AC 220 240V power to DC once and controls capacity by changing supply power status to the compressor with transis tor module includes 6 transistors The outline of the control is as follows The revolution position and revolution speed of the motor are detected by detecting winding electromotive force of the com pressor motor under operation and the revolution speed is changed so that the motor drives based upon revolution speed of the operation command by changing timing current transfer timing to ex change inverter output
13. and SO of motor connector CN10 Start to operate the indoor unit in except heating operation At this time is it possible to detect DC 1V or more between and 8 O of motor connector CN10 Check this condition within 15 seconds after starting unit Fan motor operates normally Replace bearing 41 FILE NO SVM 05019 4 Indoor fan motor starts rotating by turning on power supply alone For 16k lt Cause gt The IC is built in the indoor fan motor Therefore the P C board is also mounted to the inside of the motor If the P C board is soldered imperfectly or the IC is defective the fan motor may automatically rotate by turning on power supply lt Confirmation procedure gt 1 Remove the front panel Remove 4 screws 2 Remove cover of the fan motor lead wires 3 Check DC voltage with CN10 connector while the fan rotating NOTE Do not disconnect the connector while the fan rotates Use a thin tester rod P C board Indoor fan starts rotating when power supply breaker is turned ON CN10 Check output voltage DC of the fan motor board 6 Blue Yellow 5 Yellow 4 Blue Measure the voltage of the motor connector CN10 pin GND Black and pin V line Yellow 3 Yellow under condition that the indoor fan rotates 2 1 Red Above DC 0 4V P C board is defective Below DC 0 4V Motor is defective 42 8 8 Ho
14. change 1 Changing of setting temperature 9 QUIET operation control When the QUIET button is pushed the fan is restricted the revolution speed at L level until ne the QUIET button is pushed once again 3 5 cancel QUIET operation 43 0 Remarks QUIET operation is appropriate to work with 2 5 less heating load condition Because of the fan 420 speed L may cause not enough the heating capacity PIS 15 30 45 60 and After Time min Hi Power Start Fig 6 2 12 18 6 2 5 Auto Operation 1 As shown in Fig 6 2 13 the operation mode COOL DRY HEAT is selected according to the outside temperature when the operation has started The operation in Fan mode continues until an operation mode is selected If the room temperature is 20 C or higher when AUTO operation started within 2 hours after HEAT operation had stopped select an opera tion mode after Fan operation of ultra low fan In AUTO operation the set temperature of each operation can be corrected by the remote controller in the range of Ts 5 C Outdoor temp Powerful Cool mode 32 Cool mode 22 Fan mode 20 Heat mode Fig 6 2 13 2 After selecting the operation mode COOL DRY HEAT select an operation mode again when a status that the compressor was turned off by the room temperature or outside air temperature continues for 15 minutes 3 After selecting DRY operation a status that the room temperat
15. clock time indication are indicated by push the 5 button Transmission mark FILE NO SVM 05019 This transmission mark indicates when the remote control transmits signals to the indoor unit Mode display Indicates the current operation mode AUTO Automatic control A Auto changeover control zx Cool Dry x Heat Fan only Temperature display Indicates the temperature setting 17 C to 30 C When you set the operating mode to Fan only no temperature setting is indicated Louver operation display Indicates the louver operation Fix 8 Swing FAN speed display Indicates the selected fan speed AUTO or one of five fan speed levels LOW MED MED HIGH ot can be indicated Indicates AUTO when the operating mode is either AUTO or Dry TIMER and clock time display The time set for timer operation or clock time is indicated The present time is always indicated except for TIMER operation Hi POWER display Indicates when the Hi POWER operation starts Push the Hi POWER button to start and push it again to stop the operation PRESET display Flashes for 4 seconds when the PRESET button is pushed and hold to memorize Q mark is indicated when PRESET button is pushed than 4 seconds Push another button to turn off the mark ECO display Indicates when the ECO is in operation COMFORT SLEEP display Indicates when the COMF
16. is fixed to AUTO Increasing of compressor motor speed stops approx 30 seconds after operation For smooth operation of the compressor the compressor motor speed is restricted to Max 33 rps for 2 minutes and started and then compressor motor speed increases again approx 30 seconds after Max 57 rps for 2 minutes to 4 minutes respectively after the operation has started The set value of the remote control should If the set value is above the room temperature Cooling be below the room temperature operation is not performed And check whether battery of the remote control is consumed or not 8 2 Primary Judgment To diagnose the troubles use the following methods 1 Judgment by flashing LED of indoor unit 2 Self diagnosis by service check remote controller 3 Judgment of trouble by every symptom Firstly use the method 1 for diagnosis Then use the method 2 or 3 to diagnose the details of troubles For any trouble occurred at the outdoor unit side detailed diagnosis is possible by 5 serial LED on the inverter P C board FILE NO SVM 05019 8 3 Judgment by Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner if the protective circuit operates the contents of self diagnosis are displayed with block on the indoor unit indication section Table 8 3 1 Lamps Self diagnosis OPERATION lamp is blinking 1Hz Power failure
17. not install in a place that can increase the vibration of the unit Do not install in a place that can amplify the noise level of the unit or where noise and discharged air might disturb neighbors To avoid personal injury be careful when handling parts with sharp edges Please read this installation manual carefully before installing the unit It contains further important instructions for proper installation 24 7 1 1 Installation Servicing Tools FILE NO SVM 05019 Changes in the product and components In the case of an air condition using R 410A in order to prevent any other refrigerant from being charged accidentally the service port diameter of the outdoor unit control valve 3 way valve has been changed 1 2 UNF 20 threads per inch In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size of opposite side of flare nuts has been changed for copper pipes with nominal dimensions 1 2 and 5 8 New tools for R 410A New tools for R 410A Applicable to R 22 model Changes Gauge manifold As pressure is high it is impossible to measure by means of conventional gauge In order to prevent any other refrigerant from being charged each port diameter has been changed Charge hose In order to increase pressure resisting strength hose materials and port size have been changed to 1 2 UNF 20 threads per inch When purchasing a charge hose be sur
18. red and black Shut off the power supply Does the cross flow fan rotate normally YES Turn on the power supply Operation stops Is the rotation signal DC 5 output between 2 gray lead wire and brown lead wire of the motor connector CN11 when rotating the cross flow fan by hand in no operating status 1 pulse one turn Does connecting terminal connecting cable or power supply cord completely Does not found the short wire about connecting cable and power cord NO Repair the bearing of the fan FILE NO SVM 05019 Replace the P C board YES Thermal fuse operated due to prevent temperature rising cause of incompleted connecting Motor control circuit failure IC05 D38 or 12 V power circuit failure 1 08 Replace the P C board V 0 V Replace the control P C board 40 Replace the fan motor Replace connecting the cable or power cord thermal fuse and terminal block FILE NO SVM 05019 For 16k lt Preliminary check gt 1 Is it possible to detect the power supply voltage 200 240V between 1 and 2 on the terminal block 2 Does the indoor fan motor operate in cooling operation In heating operation the indoor fan motor does not operate for Operation approximately 5 minutes after it is turned on to prevent a cold air from blowing in Check item Conceivable p
19. required to operate at this time push RESET button once more or use the remote control to turn it off When the unit is in operation Operation Motions Push RESET button for more The unit is in operation The green lamp is on than three seconds The unit stops operating The green lamp is turned off After approx three seconds The unit beeps three times If the unit is required to operate at this time push RESET button once more or use the remote control to turn it on e While this function is being set if the unit is in e While the filter check lamp is on the operation the orange lamp is on RESET button has the function of filter e This function can not be set if the timer operation reset button has been selected e When the unit is turned on by this function the louver will not swing even though it was swinging automatically before shutting down _ 20 FILE NO SVM 05019 6 4 2 How to cancel auto restart function To cancel auto restart function proceed as follows Repeat the setting prodedure the unit receives the signal and beeps three times The unit will be required to be turned on with the remote control after the main power supply is turned off When the unit is on standby Not operating Operation Motions Push RESET button for more The unit is on standby than three seconds The unit starts to operate The orange lamp is on After approx three
20. seconds The unit beeps three times The lamp changes from and continues to operate orange to green If the unit is not required to operate at this time push RESET button once more or use the remote control to turn it off When the unit is in operation Operation Motions Push RESET button for more The unit is in operation The orange lamp is on than three seconds The unit stops operating The orange lamp is turned off After approx three seconds The unit beeps three times If the unit is required to operate at this time push RESET button once more or use the remote control to turn it on While this function is being set if the unit is in 6 5 Filter Check Lamp operation the orange lamp is on I When the elapsed time reaches 1000 hours the filter 6 4 3 Power failure during timer operation check lamp indicates After cleaning the filters turn off the filter check lamp When the unit is in Timer operation if it is turned off because of power failure the timer operation is 6 5 1 How to turn off filter check lamp cancelled Therefore set the timer operation again Push RESET button on the indoor unit Note If RESET button is pushed while the filter check lamp is not indicating the indoor unit will start the Automatic Operation 21 6 6 Remote control 6 6 1 Remote control and its functions RAS M10UKCV RAS M13UKCV RAS M16UKCV D In
21. voltage and supply power winding Detection of the revolution position for controlling is performed 12 times per 1 revolution of compressor The range of supply power frequency to the com pressor differs according to the operation status COOL DRY Table 6 1 1 Compressor revolution range No of operating unit Compressor revolution rps Combination of indoor units 20 to 28 Operation 20 to 43 20 to 53 No of operating unit Compressor revolution rps Combination mode of indoor units 15 to 52 15 to 63 15 to 67 2 units 20 to 66 3 units 31 to 69 4 units 31 to 69 2 units 15 to 90 3 units 17 to 90 4 units 22 to 90 n case that any multiple indoor units are combined 6 1 2 Current Release Control The outdoor main circuit control section Inverter assembly detects the input current to the outdoor unit If the current value with compressor motor speed instructed from indoor side exceeds the specified value the outdoor main circuit control section controls compressor motor speed by reduc ing motor speed so that value becomes closest to the command within the limited value 6 1 3 Power Factor Improvement Control Power factor improvement control is performed mainly aiming to reduce the current on much power consumption of cooling heating operation Control ling starts from the time when input powe
22. 0 to 15 minutes count time continued for 3 minutes or more c The counted time is 34 minutes or more and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is 5 C or lower and temperature lowered by 3 0 C than the minimum value of the outdoor heat ex changer during 10 to 15 minutes count time continued for 3 minutes or more d The counted time is 4 hours or more and 2 O NO SVM 05019 8 Defrost operation has been already performed once Defrost operation Operation of the compressor is stopped once turn off power coupler for four way valve after 10 seconds and then exchange the four way valve After 20 seconds restart operation of the compressor Turn off the outdoor fan just when the compressor stopped Iftemperature of the indoor heat exchanger lowered than 38 C stop the indoor fan Defrost reset Resetting operation from defrost to heating is performed when any one of the following conditions is satisfied a Temperature of the outdoor heat ex changer rose to 8 C or higher b A status that temperature of the outdoor heat exchanger is 5 C or higher contin ued for 80 seconds c Defrost operation continued for 10 min utes In resetting defrost operation the compressor stops for 50 seconds if defrost has started under condition a to d in item 1 but the compressor is reset to heating operation keeping operated if defrost has
23. 1 Operation Cooling 2 Airflow High fan 3 Continuous operation 1 Motor does not rotate The key operation is accepted 2 The motor rotates but it vibrates too much 45 1 Poor contact of the motor connector 2 Indoor fan motor is defective FILE NO SVM 05019 lt Sensor characteristic table gt 100 90 _ 80 70 3 60 gt 9 50 5 40 8 30 TD Discharge temp sensor TA Room temp sensor TC Heat exchanger temp sensor AO 90665 1 TA TGa TGb TGc TGd TO Outdoor temp sensor I TGa Gas side temp sensor TGb Gas side temp sensor 0 20 90 TGc Gas side temp sensor Temperature TGd Gas side temp sensor 46 FILE NO SVM 05019 8 8 3 Indoor Unit Other Parts Part name Room temp TA sensor Heat exchanger TC sensor Checking procedure Disconnect the connector and measure the resistance value with tester Normal temp Remote controller To item of How to judge whether remote control is good or bad of the Judgment of trouble by symptom Louver motor MP 24GA Measure the resistance value of each winding coil by using the tester Under normal temp 25 C d Position Resistance value White 7 Yellow vos st 1000 380 100 Yellow Yellow Indoor fan motor Since judgment of motor i
24. A max Varistor R21 R109 15G561K 560 V Louver motor RAS M16NKV E RAS M16NKCV E Parts name Fan motor for indoor 24BYJ48 ICF 340 30 2 DC 12V Specifications DC 340 V 30W Thermo sensor TA sensor 10 kQ at 25 C DC DC transformer TO1 SWT 70 DC 390 V Secondary DC 15 V 12 V 7 V Microcomputer uPD780024AGK Heat exchanger sensor TC sensor 10 kQ at 25 C Line filter 101 S811V 06270 27mH AC 0 6A Diode DBO1 D3SBA60 4A 600 V Capacitor C03 KMH450VSSN120M25C 120uF 450 V Fuse F01 FCU250V 3 15A T3 15A 250 V Power supply IC IC01 STR L472 Varistor R21 R109 15G561K 560 V Resistor RO1 RF 5TK4R7 4 79 5 W Louver motor 24BYJ48 12VDC FILE NO SVM 05019 5 CONTROL BLOCK DIAGRAM Functions Operation e Louver Control Display Temperature Sensor 3 minute Delay at Restart for Compressor Display 5 1 Indoor Unit Motor Revolution Control Infrared Rays Signal Receiver Filter Sign Processing Display Temperature Processing Infrared Rays Timer Fan Only Mi Clock Frequency Sign Display Power Supply Louver ON OFF Signal Control Louver Driver Noise Filter ON OFF Signal Remote From Outdoor Unit Outdoor Unit REMOTE CONTROL
25. Check to see if the fuse blows out Check the R04 of the varistor Check the voltage at the No 4 pin on CN13 connector of the infrared receiver Check the transformer and the power supply circuit of the rated voltage Check the voltage at the white lead of the louver motor Check the transformer and the power supply circuit of the rated voltage FUSE 3 15A DC5V L5 DC12V L6 DC325V DC310 340V Check the voltage at the No 1 pin on CN10 connector Check the DBO1 R05 and Refer to the service data for the detailed failure diagnosis FAN MOTOR RED lt pe DC MOTOR WHI BLU bs ee 11 N FILE NO SVM 05019 4 SPECIFICATIONS OF ELECTRICAL PARTS RAS M10NKV E RAS M13NKV E RAS M10NKCV E RAS M13NKCV E Parts name Fan motor for indoor SKF 220 20 4A 1 Specifications AC Motor with 150 C thermo fuse Thermo sensor TA sensor 10 kQ at 25 C AC AC transformer T01 TT 10 187 276V 6VA Microcomputer uPD780024AGK Heat exchanger sensor TC sensor 10 kQ at 25 C Line filter LO1 SS11V 06270 27 uH AC 0 64A Diode DBO1 KBP06M 1 5A 420V Capacitor C50 LXV35VB2200MJ20 2200 uF 35V Fuse F01 BET 3 15A 250VAC T3 15A 250 V Regulator IC IC08 NJM7812 12VDC 1 5A max Regulator IC IC11 NJM7805 5VDC 1 5
26. LER RAS M10NKV E RAS M13NKV E RAS M16NKV E RAS M10NKCV E RAS M13NKCV E RAS M16NKCV E Heat pump model Cooling only model Infrared Infrared Rays Rays Remote Controller Remote Controller Operation Operation Mode Selection AUTO COOL DRY HEAT Operation b p orem Thermo Setting Fan Speed Selection om fam t mm OFF TIMER Setting Louver AUTO Swing Louver Direction Setting ON TIMER Setting ECONO FILE NO SVM 05019 6 OPERATION DESCRIPTION 6 1 Outline of Air Conditioner Control This air conditioner is a capacity variable type air conditioner The capacity proportional control compressor which can change the motor speed is mounted The indoor unit motor drive circuit is mounted to the indoor unit The compressor and the inverter to control outdoor unit motor are mounted to the outdoor unit The entire air conditioner is mainly controlled by the indoor unit controller The indoor unit controller drives the indoor fan motor based upon command sent from the remote control ler and transfers the operation command to the outdoor unit controller The outdoor unit controller receives operation command from the indoor unit side and controls the outdoor fan and the pulse modulating valve Besides detecting revolution position of the com pressor motor the outdoor unit controller controls speed of the compres
27. OR RAS M10NKV E 43T69079 PC BOARD ASSY WRS LED 43T69477 PC BOARD FOR RAS M13NKV E 43T69332 PC BOARD FOR RAS M16NKV E 51 10 2 Indoor Unit Location No 43T00413 43T00414 43T09342 43T03316 43T80311 43T80310 43T09328 43T70002 43T79301 43T21321 43T44364 43T44365 43T47006 43T47005 43T47016 43T49009 FRONT PANEL ASSY FOR RAS M10 13 16NKCV E FRONT PANEL ASSY FOR RAS M10 13 16NKV E INLET GRILLE ASSY BACK BODY ASSY AIR FILTER R AIR FILTER L HORIZONTAL LOUVER DRAIN HOSE CAP DRAIN MOTOR STEPPING REFRIGERATION CYCLE ASSY FOR RAS M10 13NKV E NKCV E REFRIGERATION CYCLE ASSY FOR RAS M16NKV E NKCV E PIPE DELIVERY PIPE SUCTION FOR RAS M10NKV E NKCV E PIPE SUCTION FOR RAS M13 16NKV E NKCV E SPRING BAIE 52 d FILE NO SVM 05019 Electric Parts Assembl Location Part us Description No No 43T11301 43T19302 43T49302 43T49006 43T22002 43T39301 43T20302 43739302 43721338 43T39303 43T69422 43T69471 43T85410 43T85411 43T85412 43T85413 43T62302 43T60317 43T07303 43T82301 PIPE SHIELD HOLDER SENSOR PLATE OF EVA SEAL HOLDER FOR PLATE ASM M BEARING BASE BEARING FAN CROSS FLOW BAND MOTOR L MOTOR FAN BAND MOTOR R WIRELESS REMOCO WC H01EE FOR RAS M10 13 16NKV E WIRELESS REMOCO WH H02EE FOR RAS M10 13 16NKCV E OWNER S MANUAL OWNER S MANUAL OWNER S MANUAL OWNER S MANUAL TERMINAL COVER CORD MOTOR LOUVER
28. ORT SLEEP is in operation Each time you push the COMFORT SLEEP button the display changes in the sequence of 1 3 5 or 9h QUIET display Indicates when the QUIET is in operation _ 23 OOO Gi PEDE HiPOWER ECO Gum I 7005 e In the illustration all indications are indicated for explanation During operation only the relevant indications will be indicated on the remote control AUTO T em m all EDD EU o FILE NO SVM 05019 7 INSTALLATION PROCEDURE 7 1 Safety Cautions For general public use Power supply cord of parts of appliance for Outdoor use shall be more than polychloroprene sheathed flexible cord design H07RN F or cord designation 245IEC66 1 5 mm or more CAUTION New Refrigerant Air Conditioner Installation THIS AIR CONDTIONER ADOPTS THE NEW HFC REFRIGERANT R 410A WHICH DOES NOT DESTROY OZONE LAYER R 410A refrigerant is apt to be affected by impurity such as water oxidizing membrane and oils because pressure of R 410A refrigerant is approx 1 6 times of refrigerant R 22 Accompanied with adoption of the new refrigerant refrigerating machine oil has been also changed Therefore during installation work be sure that water dust former refrigerant or refrigerating machine oil does not enter into the refrigerating cycle or new refrigerant air coditioner To prevent mixin of refrigerant or r
29. RE THAN 2 M FROM HEAT SOURCES SUCH AS RADIATORS HEAT REGISTORS FURNACE STOVES ETC WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN BE VERY CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLATION WORK IMMEDIATELY LET FRESH AIR INTO THE ROOM IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE IT CAUSES GENERATION OF POISONOUS GAS Never modify this unit by removing any of the safety guards or by by passing any of the safety interlock switches Do not install in a place which cannot bear the weight of the unit Personal injury and property damage can result if the unit falls Before doing the electrical work attach an approved plug to the power supply cord And make sure the equipment to be earthed Appliance shall be installed in accordance with national wiring regulations If you detect any damage do not install the unit Contact your Toshiba dealer immediately Exposure of unit to water or other moisture before installation will result in an electrical short Do not store in a wet basement or expose to rain or water After unpacking the unit examine it carefully for possible damage Do
30. SVM 05019 After 30 minutes passed the different value of room temperature and set temperature is separated zone again by more different value than before Then compressor motor speed after 30 minute passed is lower than before by the same different value of room temperature and set temperature 5 a zone E Zone Fr nis MY MAC 3 J 15 15 rps 15 rps 17 rps 22 rps 8 5 X bog tite pes 17 41 rps 17 41 rps 30 Min Time Fig 6 2 11 COMFORT SLEEP operation control 2 Changing of air flow Fan setting AUTO When the COMFORT SLEEP button is pushed When the Hi POWER is started the fan of the the ECONO operation actrvate together with the indoor unit operates at higher air flow level than timer OFF function Each time of pressing normal air flow AUTO normal air flow AUTO is COMFORT SLEEP button the off timer setting shown in Fig 6 2 8 Because of the difference between room temperature and setting changes in the sequence of 1 3 5 or 9 hours temperature are increased automatically Hi POWER operation control 3 Changing of air flow Fan setting One of 5 levels When the Hi POWER button is pushed Hi Power When the Hi POWER is started the fan of the operation is performed by changing setting indoor unit operates at higher consecutive air temperature and air flow display on the remote flow level Fan speed on the display of remote control does not change control does not
31. SVM 05019 2 CONSTRUCTION VIEWS Indoor Unit Front panel Air inlet Air filter Heat exchanger 275 Air outlet Knock out system Knock out system E V EE Connecting pipe 0 43m Flare 26 35 Hanger Connecting pipe 0 33m For 10 13 series Flare 29 52 For 16 series Flare 212 7 Drain hose 0 54m 320 620 235 _ 235 For stud bolt 215 l 215 28 010 Minimum For stud bolt 6 ai Hanger to ceiling 5 65 or more f it _ Minimum distance distance io to ceiling to ceiling 3 N 170 or more e E aii T EJ S Hanger Hanger 18 90 150 160 160 150 90 Wireless remote control Installation plate outline Center line FILE NO SVM 05019 3 WIRING DIAGRAM 3 1 Indoor Unit For 10k amp 13k COLOR INDICATION
32. TO S H B A FILE NO SVM 05019 SERVICE MANUAL AIR CONDITIONER SPLIT TYPE RAS M10NKV E RAS M13NKV E RAS M16NKV E RAS M10NKCV E RAS M13NKCV E RAS M16NKCV E This service manual provide information only on the indoor units For information on the outdoor unit please refer to the service manual of the outdoor unit May 2005 L S O Q FILE NO SVM 05019 CONTENTS Specifications Construction Views Wiring Diagram Specifications of Electrical Parts Indoor unit only Control Block Diagram Indoor unit only Operation Description Installation Procedure How to Diagnose the trouble How to Replace the main parts Indoor unit only Exploded Views and Parts list Indoor unit only FILE NO SVM 05019 1 SPECIFICATIONS Specifications RAS M10NKV E RAS M13NKV E RAS M16NKV E Power supply 220 230 240V 1Ph 50 60Hz Electric Unit model characteristice Operating noise Dimension Fan motor output of bis jos 590 620 650 660 Cooling Heating Piping Flare connection Fare connection RAS M10NKCV E RAS M13NKCV E RAS M16NKCV E Power supply 220 230 240V 1Ph 50 60Hz Electric Unit model characteristice Operating noise Dimension Fan motor output Air flow rate 590 Piping Flare connection connection e The specifications may be subject to change without notice for purpose of improvement FILE NO
33. Trouble on wiring of compressor Missed phase Discharge temp ex ceeded 120 C All off Displayed when error is detected Check dischage temp sensor TD Degassing Trouble on P M V Break down of compressor All off 37 Displayed when error is detected Check power voltage 220 240 V 10 Overload operation of refrigeration cycle Check installation condition Short circuit of outdoor diffuser FILE NO SVM 05019 8 5 Judgement of Trouble by Every Symptom 8 5 1 Indoor unit Including remote controller 1 Power is not turned on Does not operate entirely For 10 13k Turn off power supply once 5 Operation second later turn it Check item on again Conceivable principle cause NO Is OPERATION lamp blinking Measure YES Item by symptoms Does Is it possible to transmission turn on power mark on supply by remote control NO Remote control is verses flash normally defective O button and is its signal on remore transmitted control properly YES Refer to 5 YES Troubleshooting for Remote Control Unit operates normally Parts Does Is fuse F01 R04 C01 fan motor DB01 C50 IC08 connector IC11 and T01 between 1 are defective and short circuit Is voltage DC 12V or 5V Repl NO indicatedon YES Space main rear of indoor control board normal
34. ackwards If there is a fault the indoor unit will beep for 10 seconds Pi Pi Pi Note the check code on the display of the remote control 2 digits alohanumeric will be indicated on the display All lamps on the indoor unit will blink 5 times per 1 sec Press CLR button After service finish for clear service code in memory e 7F is indicated on the display of the remote control Press cd button to release the service mode The display of the remote control returns to as it was before service mode was engaged 8 4 2 Caution at Servicing 1 After servicing push the 0 button to return to the normal mode 2 After servicing by the check code turn off breaker of the power supply and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status However the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory Block distinction Table 10 4 1 Operation of diagnosis function Check coda Block Indoor P C board etc Cause of operation Short circuit or disconnec tion of the room tempera ture sensor TA sensor Air conditioner status Operation continues Condition Displayed when error is detected FILE NO SVM 05019 Judgment and action Check the room temp sensor When the room temp sensor is normal check P C board Coming off disconnec
35. ate pull the indoor unit toward you while pushing its bottom up at the specified parts D D Push Push Fig 7 2 15 7 2 7 Drainage 1 Run the drain hose sloped downwards Hole should be made at a slight downward slant on the outdoor side Do not form the drain hose into the Do not rise the drain hose waved shape F x Ux Do not put the drain hose end into water x x ln Z gt gt Do not put the drain hose end in the drainage ditch Fig 7 2 16 2 Put water in the drain pan and make sure that the water is drained out of doors 3 When connecting extension drain hose insulate the connecting part of extension drain hose with shield pipe Shield pipe 2 N 4 Drain hose Inside the room E Extension drain hose Fig 7 2 17 Arrange the drain pipe for proper drainage from the unit Improper drainage can result in dew dropping This air conditioner has the structure Wall designed to drain water collected from dew which forms on the back of the Drain indoor unit to the drain pan guide Therefore do not store the power cord and other parts at a height above the drain guide Space for pipes Fig 7 2 18 30 7 2 8 Setting of Remote Controller Select
36. d is gradually lowered to prevent over temp rising of compressed pressure If temperature becomes below 48 C return to above item 1 Current release control The input current of compressor and outdoor fan motor Precisely inverter main circuit control section which occupy most of air conditioner input is detected by the outdoor current sensor The compressor motor speed is lowered gradu ally according to the range of TO outside air temp if the input current exceeds the current value determined in each zone as shown in Fig 6 2 10 so that the input current does not exceed the set value In case that the current lowered by approx 0 3A to 0 5A than each set value return to above item 1 3 16 TO 16 0 15 5 11 0 10 5 Outside air temp C Fig 6 2 10 4 Defrost control 1 Detection of frost In heating operation time duration while the compressor operates is counted and defrost operation starts by any condition described below a The counted time is 28 minutes or more and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is 20 C or lower contin ued for 3 minutes or more b The counted time is 28 minutes or more and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is 8 C or lower and temperature lowered by 2 5 C than the minimum value of the outdoor heat ex changer during 1
37. e to confirm the port size Electronic balance for refrigerant charging As pressure is high and gasification speed is fast it is difficult to read the indicated value by means of charging cylinder as air bubbles occur Torque wrench nominal diam 1 2 5 8 The size of opposite sides of flare nuts have been increased Incidentally acommon wrench is used for nominal diameters 1 4 and 3 8 Flare tool clutch type By increasing the clamp bar s receiving hole strength of spring in the tool has been improved Gauge for projection adjustment Used when flare is made by using conventional flare tool Vacuum pump adapter Connected to conventional vacuum pump It is necessary to use an adapter to prevent vacuum pump oil from flowing back to the charge hose The charge hose connecting part has two ports one for conventional refrigerant 7 16 UNF 20 threads per inch and one for R410A If the vacuum pump oil mineral mixes with R 410A a sludge may occur and damage the equipment Gas leakage detector Exclusive for HFC refrigerant Incidentally the refrigerant cylinder comes with the refrigerant designation R 410A and protector coating in the U S s ARI specified rose color ARI color code PMS 507 Also the charge port and packing for refrigerant cylinder require 1 2 UNF 20 threads per inch corresponding to the charge hose s port size 25 7 2 Installati
38. efrigerating machine oil the sizes of connecting sections of charging port of the main unit or installation tools are different from those for the coventional refrigerant Accordingly the exclusive tools are required for the new refrigerant R 410A as shown below For conecting pipes use new and clean piping materials with high pressure tight force which were made fro R 410A only so that water or dust does not enter Moreover do not use the existing piping because there are problems about pressure tight forec and inner impurity in the existing piping CAUTION TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a contact separation of at least 3 mm The installation fuse 25A must be used for the power supply line of this air conditioner FOR USE BY QUALIFIED PERSONS ONLY TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK MAKE SURE ALL POWER SWITCHES ARE OFF FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK CONNECT THE CONNECTING CABLE CORRECTLY IF THE CONNECTING CABLE IS CONNECTED BY WRONG WAY ELECTRIC PARTS MAY BE DAMAGED CHECK THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD PLACE THE UNIT WELL AWAY MO
39. enter of its terminal meets the lowest point of band motor R point A Fix the cross flow fan with the set screw at the position where the gap between the back body and the right surface of the cross flow fan is 4 mm 1 Remove the front panel electrical part horizontal louver heat exchanger and the cross flow fan following procedure 5 2 Remove the 2 screws fixing the base bearing 3 Remove the bearing from the base bearing If the housing protrudes from the base bearing put the housing in position and attach the bearing to the base bearing FILE NO SVM 05019 Remarks 2 Screws 9 2 Microcomputer Part name Common procedure Procedure 1 Turn the power supply off to stop the operation of air conditioner 2 Remove the front panel Remove the two fixing screws O4 x 14 3 Remove the electrical part base 50 FILE NO SVM 05019 Remarks Replace the thermal fuse terminal block microcomputer ass y and the P C board ass y FILE NO SVM 05019 10 EXPLODED VIEWS AND PARTS LIST 10 1 Indoor Unit E Parts Assy 406 404 401 Location Location Part E Description Description No No 406 43T69319 TEMPERATURE SENSOR 43T69335 PC BOARD FOR RAS M16NKCV E 43T60002 TERMINAL BLOCK 3P 43T69474 PC BOARD FOR RAS M10NKCV E 43T69320 TEMPERATURE SENSOR 43T69475 PC BOARD FOR RAS M13NKCV E 43T62003 CORD CLAMP 43T69476 PC BOARD F
40. erve button SET Push this button to reserve setting of time ON timer or OFF timer A receiving beep is heard D Cancel button CLR Push this button to cancel ON timer and OFF timer A receiving beep is heard 2 Sleep timer button SLEEP Push this button to set the OFF timer 1 3 5 or 9 hours A receiving beep is heard 3 High power button Hi POWER Push this button to start the high power operation A receiving beep is heard 22 _ FILE NO SVM 05019 ECO timer button ECO Push this button to start the ECO operation A receiving been is heard Quiet button QUIET Push this button to start the quiet operation A receiving been is heard Comfort sleep button COMFORT SLEET Push this button to start the comfort sleep operation OFF timer neccessary to set together 1 3 5 or 9 hours A receiving been is heard PRESET button Push this button to operate the air conditioner according to settings memorized A receiving been is heard Or push the button for more than 4 seconds to memorize the setting indicated on the remote control and Q mark is indicated Automatic operation button AUTO Push this button to operate the air conditioner automatically A receiving beep is heard TOSHIBA AUTOA Xt o XE xd e CHK Mic C RESET CLOCK 6 6 2 Names and functions of indications on remote contol Display All indications except for
41. frared signal emitter Transmits a signal to the indoor unit START STOP button 0 Push the button to start operation A receiving beep is heard Push the button again to stop operation A receiving beep is heard If no receiving sound is heard from the indoor unit push the button twice Mode select button MODE Push this button to select a mode Each time you push the button a mode is selected in a sequence that goes from A Auto changeover control zt Cool Dry Heat Fan only and back to A A receiving beep is heard Temperature button TEMP The set temperature is increased up to 30 C Ns The set temperature is dropped down to 17 C A receiving beep is heard 5 Fan speed button FAN Push this button to select fan speed When you select AUTO the fan speed is automatically adjusted according to the room temperature You can also manually select the desired fan speed from among five settings LOW Z LOW Za MED MED sai HIGH A receiving beep is heard 6 Auto louver button SWING Push this button to swing the louver A receiving beep is heard Push the button again to stop the louver swinging A receiving beep is heard Set louver button FIX Push this button to adjust the air flow direction A receiving beep is heard On timer button ON Push this button to set the ON timer 9 Off timer button OFF Push this button to set the OFF timer 0 Res
42. gain cancel QUIET operation Remarks QUIET operation is appropriate to work with less cooling load condition Because of the fan speed L may cause not enough the cooling capacity 6 2 3 DRY Operation The Remote controller MODE Button is Set to the DRY Position Once the setting is made the operation mode is memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing 0 button Dry operation signal is transmitted to outdoor unit The Cooling operation giving priority to dehumidi fying which restrains the indoor fan speed and compressor motor speed is performed The indoor fan motor operates as shown in Fig 6 2 7 Fan speed is AUTO only 15 NO SVM 05019 e The outdoor unit controls the outdoor fan relay R01 R02 and and the compressor motor speed according to the operation command signal sent from the indoor unit 2 5 S 2 0 0 1 5 5 1 0 o 0 5 Set 0 temp 0 5 NOTE 1 Middle motor speed between L and SUL Fig 6 2 7 Setting of air flow 1 Dehumidifying preferential Cooling capacity control The cooling capacity and room temperature are controlled by changing the compressor motor speed according to both the difference between the temperature detected by the room temperature sensor and the temperature set by TEMP button and also any change in room temperature When the air condi
43. it to the back body 4 Attach the TC sensor to the holder 5 Tighten the screw for the ground connection 6 Assemble the drain guide the TC sensor wire should be covered by the drain guide 7 Tighten the screw on the electrical part cover Horizontal 1 Remove the front panel and the electrical louver part following procedure 2 2 Remove the center shaft of the horizontal louver from the back body 3 Remove the left shaft from the back body 4 Remove the horizontal louver from the back body Left shaft l Center shaft Part name Heat exchanger Cross flow fan Base bearing Procedures 1 Remove the front panel electrical part and the horizontal louver following procedure 3 2 Remove the pipe holder at the rear side of main unit 3 Remove the 2 screws on the heat exchanger at the base bearing 4 Remove the 2 screws on the heat exchanger at the 2 fixed plates upper and lower from the back body and then pull out the upper side of the heat exchanger slowly 1 Remove the front panel electrical part horizontal louver and the heat exchanger following procedure 2 Remove the 2 screws on the band motor L and remove the 2 screws on the band motor R and then remove the cross flow fan 3 Loosen the set screw of the cross flow fan then separate the fan and the fan motor Notice To assemble cross flow fan and fan motor to the unit please turn the fan motor unit the c
44. nd make the following condition 1 Heat operation 2 the setting temperature higher enough than room temperature 1 Compressor does not operate 2 OPERATION lamp blinks 1 The temperature of the heat exchanger is abnormally high 2 The heat exchanger sensor connector has short circuit CNO1 3 The heat exchanger sensor is defective 4 P C board is defective Turn the power on after connecting the motor connector Start the operation with the following condition 1 Operation Cooling 2 Airflow High fan 3 Continuous operation 1 Motor does not rotate The key operation is accepted 2 The Motor rotates but it vibrates too much 44 1 Poor contact of the motor connector 2 Fan motor is defective For 16k Procedure Shut off the power supply and remove the P C board assembly from the electronic parts base Remove the connecting cable from the terminal block Table 8 8 1 Check point Symptom 1 Is the fuse blown FILE NO SVM 05019 Causes 1 Application of shock voltage Overload by short circuit of the parts Remove the connector for the motor and turn the power on If the OPERATION lamp flashes 0 5 sec ON 0 5 sec OFF when the power turning on the checking points described as 1 3 of right column are not necessary to perform Voltage check 1 Between TP1 220 240V AC 2 Between and of 310 to
45. ndoor P C board Operation command signal is not sent to outdoor side Operation continues 36 Flashes when trouble is detected on Operation command signal and normal status when signal is reset If Operation command signal does not stop between indoor terminal board 2 and 3 replace inverter P C board If signal stops between indoor terminal board 2 and 3 replace indoor P C board Block distinction Operation of diagnosis function Check code Outdoor P C board Cause of operation Inverter over current protective circuit operates Short time Air conditioner status All off Remarkes Displayed when error is detected FILE NO SVM 05019 Judgment and action Even if trying operation again all operations stop immediately Replace P C board Position detect circuit error or short circuit between windings of compressor All off Displayed when error is detected 1 Even if connecting lead wire of compressor is removed position detect circuit error occurred Replace P C board Measure resistance between wires of compressor and perform short circuit Replace compressor Current detect circuit error All off Displayed when error is detected Even if trying operation again all operations stop immediately Replace P C board Being out of place disconnection or short circuit of outdoor temp sensor
46. nged if raising operation speed Control 4 D zone Slow down zone of motor speed When TD detect value is 111 C or higher operating motor speed is slowly down Control 5 E zone Normal down of motor speed When TD detect value is 115 C or higher operating motor speed is down Control 6 F zone Operation stop zone If TD detect value exceeds 120 C during operation stop the operation immediately Then restart the operation when TD detect value becomes 108 C or lower 2 3 4 5 6 zone Release of motor speed Normal operation zone Fig 6 2 4 Compressor motor speed control 13 FILE NO SVM 05019 8 ECONO operation control 1 The set temperature increased 0 5 C per hour up When the ECO button is pushed ECONO to 2 C starting from the set temperature when operation is performed by restraining air flow ECONO has been received and compressor motor speed The set 2 Indoor air flow is controlled between L and UL temperature is changed also The compressor motor speed in control as shown in Fig 6 2 5 Room tepm Set temp C Compressor motor speed Indoor n Fan 1 Unit operation Same time operation M16 3MYA 20 rps 20 20 rps 52 rps Nl di i Fig 6 2 5 9 COMFORT SLEET operation control 10 Hi POWER operation control When the COMFORT SLEEP button is When the Hi POWER button is pushed pushed the ECONO ope
47. nko filter x 1 B Label x 1 Others Name Owner s manual Installation manual This model is not equipped with an extension drain hose Option For the extension drain hose use an optionally available RB 821SW or commercially available one 27 FILE NO SVM 05019 Mounting the Installation Plate 7 2 2 Installation Place For installation of the indoor unit use the paper pattern on the back A place which provides the spaces around the indoor unit as shown in the above diagram A place where there is no obstacle near the air inlet and outlet A place which allows easy installation of the piping to the outdoor unit A place which allows the front panel to be opened The indoor unit shall be installed as top of the indoor unit comes to at least 2m height Also it must be avoided to put anything on the top of the indoor unit Direct sunlight to the indoor unit wireless receiver should be Anchor bolt holes 2 or more from floor avoided Z yl Hook ee The microprocessor in the indoor unit should not be too close to Hook Thread Pipe hole r f noise sources Pipe hole For details see the owner s manual Mounting screw Indoor unit Weight Fig 7 2 3 Remote controller A place where there are no obstacles such as a curtain that may block When the installation plate is directly mou
48. nted on the wall the signal from the indoor unit Do not install the remote control in a place exposed to direct sunlight 1 Securely fit the installation plate onto the wall by screwing it in the or close to a heating source such as a stove upper and lower parts to hook up the indoor unit Keep the remote control at least 1 m apart from the nearest TV set or 2 To mount the installation plate on a concrete wall with anchor bolts stereo equipment This is necessary to prevent image disturbances or utilize the anchor bolt holes as illustrated in the above figure noise interference 3 Install the installation plate horizontally in the wall The location of the remote control should be determined as shown Dele CAUTION Side view ERR s When installing the installation plate with a mounting screw do not T Top view A use the anchor bolt hole Otherwise the unit may fall down and result s P 25 Indoor unit in personal injury and property damage E o M 3 S L 2 Reception range Anchor bolt ey P d Pes pone t Remote control X O X i Projecti lke Axial distance 2 min dia hele 15 mm or less P d Fig 7 2 1 edat e cl Mounting AY 7 2 3 Cutting a Hole and Mounting Installation Plate m Ax 25 0 z TS Clip anchor Cutting a Hole
49. oints becomes 9 6A _ 12 5 Limit for maximum compressor motor speed by indoor fan speed When outdoor temperature sensor detected 32 C or lower and indoor heat exchanger sensor detected 17 C or lower the maximum compressor motor speed is limited by the indoor fan speed For example when 1 unit only operates the compressor motor speed is limited as described in the table below Table 6 2 1 Air flow rate 6 Louver control The vertical air flow louvers are automatically set to horizontal or cool memory position When temperature of indoor heat exchanger becomes 5 C or lower by the prevent freezing control and the compressor is turned off the vertical air flow louvers close once and then return to the position of previous time Operation stop 120 FILE NO SVM 05019 7 Discharge temperature control The discharge temperature of refrigerant gas from the compressor is detected by the dis charge temperature sensor and controls operat ing compressor motor speed 1 Control 1 A zone Normal operation zone When TD detect value is 101 C or lower the operation is performed with operating motor speed instructed by the serial signal Control 2 B zone Slow up zone of motor speed When TD detect value is 101 C or higher operating motor speed is slowly up Control 3 C zone Keep zone When TD detect value is 108 C or higher operating motor speed is not cha
50. on 8 1 3 Operation Which is not a Trouble 8 1 1 Confirmation of Power Supply Program Operation For controlling the air conditioner the program operations are built in the microcomputer as de scribed in the following table If a claim is made for running operation check whether or not it meets to the contents in the following table When it does we inform you that it is not trouble of equipment but it is indispensable for controlling and maintaining of air conditioner Confirm that the power breaker operates ON nor mally 8 1 2 Confirmation of Power Voltage Confirm that power voltage is AC 220 240V 10 If power voltage is not in this range the unit may not operate normally Table 8 1 1 Operation of air conditioner Description When power breaker is turned ON the operation lamp Green of the indoor unit flashes The OPERATION lamp of the indoor unit flashes when power source is turned on If 5 button is operated once flashing stops Flashes also in power failure Compressor may not operate even if the room temperature is within range of compressor ON The compressor does not operate while compressor restart delay timer 3 minutes timer operates The same phenomenon is found after power source has been turned on because 3 minutes timer operates In DRY and ECONO mode FAN air flow display does not change even though FAN air flow select button is operated The air flow indication
51. on Diagram of Indoor Units Hook 65 mm or more Installation Shield pipe 2 Sasa Zeolite plus filter Bio enzyme amp Gingko filte 8 Pan head wood screw L Pt remote control Before installing the wireless remote control With the remote control cover open load the batteries supplied correctly observing their polarity Insulate the refrigerant pipes separately with insulation not together 2 Wireless remote control 6 mm thick heat resisting polyethylene foam _ 56 FILE NO SVM 05019 For the rear left and left piping Insert the cushion between the indoor unit and wall and tilt the indoor unit for better operation Do not allow the drain hose to get slack Cut the piping hole sloped slightly Make sure to run the drain hose sloped downward The auxiliary piping can be connected the left rear left rear right right bottom right or bottom left St he Rear right J Rear left Bottom right Left Bottom left 7 3 2 Accessory and installation parts FILE NO SVM 05019 Part No Part name Q ty No Part name Q ty Part No Part name Q ty s I lo Remote control holder x 1 Mounting screw 4 x 251 x 6 Wireless remote control x 1 Sasa Zeolite plus filter x 1 gt head wood screw 23 1 x 161 x2 9 o Battery x 2 Bio enzyme amp Gi
52. oncontrol of outdoor fan motor P M V control Detection of inverter input current and current release operation Over current detection and prevention opera tion to transistor module Compressor stop function Compressor and outdoor fan stop function when serial signal is off when the serial signal does not reach the board assembly of outdoor control by trouble of the signal system Transferring of operation information Serial signal from outdoor unit to indoor unit Detection of outdoor temperature and opera tion revolution control Defrost control in heating operation Temp measurement by outdoor heat exchanger and control for 4 way valve and outdoor fan 3 Contents of operation command signal Serial signal from indoor unit controller to outdoor unit controller The following three types of signals are sent from the indoor unit controller e Operation mode set on the remote controller Compressor revolution command signal defined by indoor temperature and set tem perature Correction along with variation of room temperature and correction of indoor heat exchanger temperature are added For these two types of signals Operation mode and Compressor revolution the outdoor unit controller monitors the input current to the inverter and performs the followed operation within the range that current does not exceed the allowable value Temperature of indoor heat exchanger by indoor heat exchanger sensor
53. oner stops and an alarm is displayed lt COOL DRY gt Table 6 1 3 Compressor revolution rps TO gt 38 C Outdoor temp 390 rpm 1 to 2 units sensor TO 390 rpm TO lt 38 C 3 to 4 units 390 rpm ECONO TO 38 C 390 rpm operation TO lt 38 C 390 rpm TO is abnormal lt HEAT gt 500 rpm Table 6 1 4 Compressor revolution rps Outdoor temp sensor TO 2 5 C TO TO 5 C TO 2 5 C ECONO operation TO 5 C TO is abnormal 6 2 Description of Operation Circuit Turning ON the breaker flashes the operation lam p This is the display of power ON or notification of power failure When pushing 0 button of the remote controller receive sound is issued from the main unit and the next operations are performed together with opening the vertical air flow louvers 6 2 1 Fan Only Operation The Remote controller MODE Button is Set to the FAN ONLY Operation This mode is only for the cooling only model Once the setting is made the operation mode is memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing 5 button When the FAN button is set to the AUTO position the indoor fan motor operates as shown in Fig 6 2 1 When the FAN button is set to LOW LOW MED MED or HIGH the motor operates with a constant ai
54. or Switch When two indoor units are installed in the separated rooms there is no need to change the select switches Remote Controller Selector Switch When two indoor units are installed in the same room or adjacent two rooms if operating a unit two units may receive the remote controller signal simultaneously and operate In this case the operation can be preserved by setting either one indoor unit and remote controller to B setting Both are set to A setting in factory shipment The remote control signal is not received when the settings of indoor unit and remote controller are different There is no relation between A setting B setting and A room B room when connecting the piping and cables 1 Setting of remote controller switch at the indoor unit side How to remove the front cabinet Hood of Front Panel 4 points Screws Screws 31 FILE NO SVM 05019 1 Stop the operation of the air conditioner and turn turn off its main power supply 2 Pull the air inlet grille toward you to open it and remove the air inlet grille 3 First open the horizontal louver and then remove the front panel from the back body by pulling it toward you Position of Remote Control Selector Switch How to set the Remote Control Selector Switch A setting n B setting Ea EH AB AB Fig 7 2 20 How to mount the front panel Pushthe front
55. ower on If the OPERATION lamp blinks 0 5 sec ON 0 5 sec OFF when the power turning on the checking points described as 1 4 of right column are not necessary to perform Voltage check 1 Between F01 and CN23 AC 220 240 V 2 Between and of C50 DC 14 31V 3 Between 5V 4 Between 12V GND GND and and AC power cord is defective Poor contact of the terminal plate Capacitor C01 C15 is defective Line filter L01 is defective Capacitor C50 is defective Diode DB01 is defective T01 ICO8 IC11 are defective Start the operation with the system which the time of the restart delay timer is shortened 1 All indicators light for 3 sec 2 Indicators do not indicate normally after approximate 3 sec Defective indicator or poor housing assembly CN13 Make the operation status by pressing once the d button 1 The time of the restart delay timer is shortened 2 Cool operation 3 Air volume AUTO 4 Make the setting temperature lower enough than room temperature 5 Continuous operation 1 Compressor does not operate 2 OPERATION lamp blinks 1 The temperature of the indoor heat exchanger is abnormally lower 2 Poor contact of the heat exchanger sensor The connector is disconnected CNO1 3 Heat exchanger sensor main P C board are defective Refer to 4 Main PC board is defective The status of No 4 is continued a
56. panel back in and make sure all hook are locked Adhesion of B label When setting to B Be sure to affix the B label on the front panel same asthe below figure Fig 7 2 21 FILE NO SVM 05019 2 Setting of remote controller selector at the 7 2 9 Check and Test Operation remote controller side 1 Check the unit is firmly hooked up on the installation plate Check the connecting pipes tightened securely Confirm that there is no gas leakage 3 Confirm that all connecting cables are Enter the batter secured and correct Push the CHK button by something with thin Check the pipes insulation edge 00 is displayed Check the drainage If MODE button is pushed while pushing CHK Connection of the grounding wire button the small B is displayed at the right of the setting temperature indication section RUN COOL mode turn i h the MODE Toreset Sema pueh ie MADE Buton To switch the TEST RUN COOL mode ARIN WNE PUSING hs press TEMPORARY button for 10 sec The beeper will make a short beep B of the remote controller is displayed with 2 liquid crystal only when it is set to B There is no display of A NO gt 3 Confirm the indoor unit can operate with the changed setting of the remote control ler N TOSHIBA as Hi POWER FILTER PAP TIMER 1 0 3 Q c CHK AMIE B BBs
57. pe around them E Bind the auxiliary pipes two and connecting cable with facing tape tightly In case of leftward piping and rear leftward piping bind the auxiliary pipes two only with facing tape Indoor unit Auxiliary pipes XC Connecting cable Installation plate Fig 7 2 13 Carefully arrange pipes so that any pipe does not stick out of the rear plate of the indoor unit Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wound on the connecting pipe to avoid double taping at the joint moreover seal the joint with the vinyl tape etc Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material s When bending a pipe carefully do it not to crush it E FILE NO SVM 05019 7 2 6 Indoor Unit Fixing 1 Pass the pipe through the hole in the wall and hook the indoor unit on the installation plate at the upper hooks 2 Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate 3 While pressing the indoor unit onto the wall hook it at the lower part on the installation plate Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate Hook here CD Installation plate Press unhook Fig 7 2 14 For detaching the indoor unit from the installation pl
58. r diagnoses the operation condition and indicate the information of the self diagnosis on the display of the remote control with the check codes If a fault is detected all lamps on the indoor unit will blink at 5Hz and it will beep for 10 seconds Pi Pi Pi The timer lamp usually blinks 5Hz during the self diagnosis 2 8 4 1 How to use remote control in service mode TOSHIBA AUTO A 056 9 e CHK MEE og t4 C AIBBB HiPOWER ECO mn CD c3 TIMER CLR t G 5 9H CD CHK RESET CLOCK e Alphanumeric characters are used for the check code 5 is 5 B is 6 H is A bis B L is C d is D This illustration in only for Heat pump model For Cooling only model there is not the XX symbol 35 FILE NO SVM 05019 1 Press button with tip of pencil set the remote control to the service mode e 00 is indicated on the display of the remote control e The timer lamp on the indoor unit blinks continuously 5 times per 1 sec Press TIMER A button If there is no fault with a code the indoor unit will beep once Pi and the display of the remote control will change as follows 7700 01 02 1d 1E 22 e Check the unit with all 35 check codes 00 to 22 as shown in Table 9 4 1 e Press TIMER Y button to change the check code b
59. r flow ECONO Hi POWER and COMFORT SLEEP mode cannot be set 11 Room temp Set temp c Set temp Set temp 25 C NOTE 1 Calculated from difference in motor speed of M and L and controlled Fig 6 2 1 Auto setting of air flow 6 2 2 Cooling Operation The Remote controller MODE Button is Set to the COOL Position Once the setting is made the operation mode is memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing button A cooling operation signal is transmitted to outdoor unit The indoor fan motor operates as shown in Fig 6 2 2 when FAN button is set to AUTO The motor operates with a constant air flow when the FAN button is set to LOW LOW MED MEDY or HIGH The outdoor unit controls the outdoor fan relay R01 RO2 and ROS and the compressor motor speed according to the operation command signal sent from the indoor unit Room temp Set temp NOTE 1 Calculated from difference in motor speed of M and L and controlled Fig 6 2 2 Setting of air flow Air Flow AUTO FILE NO SVM 05019 1 Cooling capacity control The cooling capacity and room temperature are controlled by changing the compressor motor speed according to both the difference between the temperature detected by the room temperature sensor and the temperature set by TEMP button and also any change in room temperature
60. r has reached at a certain point To be concrete IGBT of the power factor improvement circuit is used and the power factor is improved by keeping IGBT on for an arbitrary period to widen electro angle of the input current 6 1 4 Prevent Freezing Control The indoor heat exchanger sensor detects refriger ant vapor temperature in COOL DRY operation If the temperature is below the specified value com pressor motor speed is reduced so that operation is performed in temperature below the specified value to prevent freezing of indoor heat exchanger 6 1 5 P M V Pulse Modulating Valve Using P M V refrigerant flow of refrigeration cycle is varied for the optimum temperature Controlling each unit separately by four P M V corresponds to difference of pipe length fan speed and unit tem perature If an error occurs on cycle temperature when power source of the air conditioner has been turned on and if start stop times of the outdoor unit are 30 times move the valve once until it hits on the stopper for positioning of the valve In this case ticktack sound may be heard FILE NO SVM 05019 6 1 6 Louver Control 1 Vertical air flow louvers Positions of vertical air flow louvers are automati cally controlled according to the operation status AUTO COOL DRY HEAT Besides positions of vertical air flow louvers can be arbitrarily set by pressing the FIX button The louver position which has been set by the FIX bu
61. ration activate Hi Power operation is performed by change together with the timer OFF function Each set temperature and air flow display on the time of pressing COMFORT SLEEP button remote control does not change the off timer setting changes in the sequence of 1 3 5 or 9 hours Setting temperature drop C 1 Changing of set temperature i ee 5 60 and After Time min Hi Power Start Fig 6 2 6 14 2 Changing of air flow Fan setting AUTO When the Hi POWER is started the fan of the indoor unit operates at higher air flow level than normal air flow AUTO normal air flow AUTO is shown in Fig 6 2 2 Because of the difference between room temperature and set temperature are increased automatically 3 Changing of air flow Fan setting One of 5 levels When the Hi POWER is started the fan of the indoor unit operates at higher consecutive air flow level Fan speed on the display of remote control does not change 4 Changing of louver position If the room temperature is higher than setting temperature by 3 5 C or more the louver is automatically set to the maximum air flow position If it is not position of louver is not change When room temperature is reach to setting temperature The louver moves back to set position 11 Quiet operation control When the QUIET button is pushed the fan is restricted the revolution speed at L level until the QUIET button is pushed once a
62. rinciple cause Turn off power supply once and turn it on again Measure Item by symptoms Does compressor continue to operate Is it possible to detect DC 1V or more between and Oof motor connector CN10 Replace indoor fan motor YES Start to operate indoor unit in cooling operation at airflow level LOW Is it possible to detect DC Does indoor NO 310 340V between NO fan operate DG O of motor YES connector CN10 Turn off indoor unit and remove connector from motor Then press Motor connection condition button Is it possible to detect 15V NO on remote control to between and O of stop blinking lamp on motor connector CN10 indoor unit Change airflow level to High Is it possible to detect DC 15V between 2 and of motor connector CN10 Start to operate the indoor unit At this time is it possible to detect DC 1V or more between and of motor connector CN10 Replace main s P C board Is it possible to NO Turn off indoor unit change airflow and remove connector level to High from motor YES Is it possible to rotate cross Then start to operate flow fan by hand properly indoor unit with remote control Turn off indoor unit and rotate cross flow fan by hand when the unit is on standby At this time is it possible to detect DC 1V or more between
63. rt a hexagon wrench 4 mm Fig 7 2 9 Firmly insert the drain hose and drain cap otherwise water may leak 29 In case of right or left piping After scribing slits of the front panel with a knife or a making off pin cut them with a pair of nippers or an equivalent tool Slit Fig 7 2 10 In case of bottom right or bottom left piping After scribing slits of the front panel with a knife or a making off pin cut them with a pair of nippers or an equivalent tool Fig 7 2 11 Left hand connection with piping Bend the connecting pipe so that it is laid within 43 mm above the wall surface If the connecting pipe is laid exceeding 43 mm above the wall surface the indoor unit may unstably be set on the wall When bending the connecting pipe make sure to use a spring bender so as not to crush the pipe Bend the connection pipe within a radius of 30 mm 06 35 40 mm 09 52 To connect the pipe after installation of the unit figure To the forefront of flare AL Outward form of indoor unit R30 or less 06 35 R40 or less 09 52 Use polisin gi XN polyethylene core or the like for bending pipe Use the handle of screwdriver etc Fig 7 2 12 If the pipe is bent incorrectly the indoor unit may unstably be set on the wall After passing the connecting pipe through the pipe hole connect the connecting pipe to the auxiliary pipes and wrap the facing ta
64. s difficult on the single motor refer to 8 5 47 FILE NO SVM 05019 9 HOW TO REPLACE THE MAIN PARTS 9 1 Indoor Unit Part name Procedures Remarks Front panel How to remove the front panel 1 Stop operation of the air conditioner and turn off its main power supply 2 Pull the air inlet grille toward you to open it and remove the air inlet grille Then remove the 4 screws fixing the front panel 3 First open the horizontal louver and then remove the front panel from the back body by pulling it toward you How to mount the front panel Push the front panel back in and make sure all hooks are locked Electrical part How to remove the electrical part 1 Remove the front panel with procedure 1 2 Remove the screw holding the electrical part cover 3 Disconnect the 2 connectors 3P for the fan motor and the connector 5P for the louver motor from the P C board assembly 4 Pull out the TC sensor from the sensor holder 5 Remove the screw for the ground connection remove the screw for the electrical part box and remove the screw from the LED unit Then remove the LED unit and the electrical part box from the main unit How to mount the electrical part 1 To put back the electrical part box lock it to the upper hook of the back body 2 Tighten the screw on the electrical part box 3 Connect the 3 connectors and arrange the wiring same as original condition and then tighten the screw from the LED un
65. sor motor by controlling output voltage of the inverter and switching timing of the supply power current transfer timing so that motors drive according to the operation command And then the outdoor unit controller transfers reversely the operating status information of the outdoor unit to control the indoor unit controller As the compressor adopts four pole brushless DC motor the frequency of the supply power from inverter to compressor is two times cycles of the actual number of revolution 1 Role of indoor unit controller The indoor unit controller judges the operation commands from the remote controller and assumes the following functions e Judgment of suction air temperature of the indoor heat exchanger by using the indoor temp sensor e Temperature setting of the indoor heat ex changer by using heat exchanger sensor Prevent freezing control e Louver motor control e Indoor fan motor operation control e LED display control e Transferring of operation command signal Serial signal to the outdoor unit e Reception of information of operation status Serial signal including outside temp data to the outdoor unit and judgment display of error 2 Role of outdoor unit controller Receiving the operation command signal Serial signal from the indoor controller the outdoor unit performs its role e Compressor operation control Operations followed to judgment of serial signal from indoor side Operati
66. started under condition e in item 1 5 Louver control The vertical air flow louvers are automatically set to heating position or heat memory position When the compressor is turned off by high temp release control the vertical air flow louvers close once and then return to the position of previous time ECONO operation control When the ECO button is pushed ECONO operation is performed by restraining air flow and status that temperature of the outdoor heat 6 exchanger detected by the outdoor heat exchanger is 0 C or lower and temperature lowered by 1 0 C than the minimum value of the outdoor heat exchanger during 10 to 15 minutes count time continued for 3 minutes or more e If the following three conditions are satis fied defrost operation Timer defrost starts after heating operation for 48 minutes 1 Setting on remote control HEAT mode HIGH Fan 30 C temp Room temp is 19 C to 24 C and outside air temp is 5 C or lower 17 compressor moter speed 1 The indoor fan speed is controlled within L as maximum speed 2 Compressor motor speed is controlled by the difference value of room temperature and set temperature as shown in Fig 6 2 11 The different value of room temperature and set temperature are separated to A B and C zone Then compressor motor speed in each zone are controlled by different speed 7 8 Setting temperature increase C FILE NO
67. the louver motor bet2v Check the transformer and the power supply circuit of the rated voltage B Check the voltage at the No 1 pin on CN10 connector and CN24 Check the F01 AC 220 240V Refer to the service data for the detailed failure diagnosis 3 2 Indoor Unit For 16k r COLOR INDICATION BROWN FILE NO SVM 05019 INDOOR OUTDOOR UNIT TERMINAL SYS d VEL YELLOW BLOCK gt UNIT BLU BLUE BLK BLACK GRY GRAY ts ORN ORANGE BLK WHI RED kL I sss anman Seen _ oo CNOA CN24 CN23 CN21 BLK BY a BLK HEAT EXCHANGER SENSOR ens TC WHIL FUSE BLK T3 15A 250VAC THERM SENSOR pH MN 4 14 LINE DC5V o DC12Vo 1 FILTER R05 DB01 5 I ao i Est i 2 3 777 m R04 ti I MAIN P C BOARD 2 MCC 867or MCC 5014 I CIRCUIT CN08 HA JEM A Simple Check for Failure Diagnosis Check Item Diagnosis Result OPERATION INDICATOR Check to see if the OPERATION indicator goes on and off when the main switch or breaker is turned on Check the primary and secondary voltage of the transformer Check the power supply voltage between Q and Refer to the name plate Check the primary and secondary voltage of the transformer Check the fluctuating voltage between 2 and 3 15 60VDC
68. tion short circuit or migration of heat exchanger sensor TC sensor Operation continues Displayed when error is detected Check heat exchanger sensor When heat exchanger sensor is normal check P C board Lock of indoor fan or trouble on the indoor fan circuit All off Displayed when error is detected Check P C board When P C board is normal check the motor Not displayed Trouble on other indoor P C boards Operation continues Displayed when error is detected Replace P C board Connecting cable and serial signal Return serial signal is not sent to indoor side from operation started 1 Defective wiring of connecting cable 2 Operation of compressor thermo Gas shortage Gas leak Operation continues Flashes when trouble is detected on Return serial signal and normal status when signal is reset When the outdoor unit never operate 1 Check connecting cable and correct if defective wiring 2 Check 25A or 30A fuse F01 of outdoor main P C board 3 Check 3 15A fuse F04 of outdoor main P C board To display Other block during operation check compressor thermo operation and supply gas check gas leak also Unit operates normally during check If Return serial signal does not Stop between indoor terminal board 2 and 3 replace inverter P C board If signal stops between indoor terminal board 2 and 3 replace i
69. tioner operates in Dry mode the maximum compressor motor speed is restricted M10 Max 20 rps M13 Max 20 rps M16 Max 22 rps While multiple indoor units operate compressor motor speed is calculated in the outdoor unit to operate When room temperature is lower than set tempera ture indoor fan motor is operated at fan speed SUL as shown in Fig 6 2 6 while the outdoor unit stops ECONO Hi POWER QUIET and COMFORT SLEEP mode cannot be set Other controls than the above mentioned controls are common to those of cooling operation 6 2 4 Heating Operation Transferring of heating operation signal from indoor unit to outdoor unit starts The indoor fan motor operates by the room tempera ture when selecting AUTO of FAN as shown in Fig 6 2 8 and operates with a set air flow when selecting LOW to HIGH However to prevent cold draft revolution speed of the fan is restricted by indoor heat exchanger when air flow is AUTO Fig 6 2 9 and starting of FAN Manual Basic control Set gt 0 LOW temp 0 5 E 1 P 15 51 ET E E M S3 c SL 50 5 5 FAN AUTO 1 2 Approximate revolution speed of M and L to linear according to temperature Fig 6 2 8 Setting of air flow Cold draft preventing control The upper limit of fan revolution speed is shown below Approximate revolution speed of HIGH and SUL linear by Tc SUL NOTE 1 Stop Starting of FAN
70. tton is stored in micro computer and the louver is automatically set at the stored position in the next operation 2 Swing If the SWING button is pressed during running operation vertical air flow louvers start swinging When the SWING button is pressed again swinging stops 6 1 7 Indoor Fan Control The indoor fan is operated by motor speed non step variable drive system motor For flow rate motor speed is controlled manually in five steps and with the unit of 10 rpm from upper limit to lower limit in AUTO mode as described in Table 6 1 2 It is not selected by relay so selecting sound does not generate Table 6 1 2 operation rada Remote ee se rate Motor speed r speed Control rpm m h rpm m h rpm m h HIGH rer 90 Cooling Se m 59 mw soso Heating NOTE UL Ultra Low SUL Super Ultra Low 10 6 1 7 Outdoor Fan Control DC Fan Motor FILE NO SVM 05019 Although the outdoor fan motor drives the outdoor fan by non step variable system of the revolution speed the revolution speed is restricted to three steps on the convenience of controlling If a strong wind is lashing outside of the room the operation may be continued as the outdoor fan stops in order to protect the outdoor fan motor If a fan lock occurred due to entering of foreign matter the air conditi
71. ure is the set temp 2 C contin ues for 15 minutes select an operation mode again Powerful Cool mode control When the outside temperature is above 32 C and indoor temperature is above 28 C select Cool mode control In Cool mode the air flow louver directs downward When the room tem perature gains access to the set temperature it becomes cool memory position 19 FILE NO SVM 05019 6 3 Temporary Operation e Temporary Auto operation existence of Auto Restart and Temporary Cooling operation can be set by the RESET button of the indoor controller Fig 6 3 1 RESET button OFF ON Control Temporary Auto operation start After pushing button for 3 seconds Auto Restart control select After pushing button for 10 seconds Temporary Cooling operation start 6 3 1 Temporary Auto Operation e When the RESET button is pushed the Auto operation with set temperature fixed at 24 C starts Controlling is same as that of Auto opera tion by the remote controller e When the RESET button is pushed again the operation stops e During Temporary Auto operation operation by the remote controller is accepted e Using the Auto Restart function the Temporary Auto operation starts when power failure is reset 6 3 2 Temporary Cooling Operation e When the RESET button keeps pushed for 10 seconds Cooling operation of
72. w to Check Simply the Main Parts 8 8 1 How to Check the P C Board Indoor Unit 1 Operating precautions 1 When removing the front panel or the P C board be sure to shut off the power supply breaker 2 When removing the P C board hold the edge of the P C board and do not apply force to the parts 3 When connecting or disconnecting the connectors on the P C board hold the whole housing Do not pull at the lead wire FILE NO SVM 05019 2 Inspection procedures 1 When a PC board is judged to be defective check for disconnection burning or discol oration of the copper foil pattern or this P C board 2 The PC board consists of the following 2 parts a Main P C board part DC power supply circuit BV 12V 35V Indoor fan motor control circuit CPU and peripheral circuits buzzer and Driving circuit of top bottom louvers b Indication unit of infrared ray receiving Infrared ray receiving circuit LED To check defect of the P C board follow the procedure described below 43 FILE NO SVM 05019 3 Checking procedure For 10 13k Procedure Shut off the power supply and remove the P C board assembly from the electronic parts base Remove the connecting cable from the terminal block Table 8 6 1 Check Point Symptom 1 Is the fuse blown Causes Application of shock voltage Overload by short circuit of the parts Remove the connector for the motor and turn the p
73. when the power supply is turning on OPERATION lamp is blinking 5Hz Thermo sensor TA short or break Heat exchanger sensor TC short or break OPERATION lamp is blinking 5Hz OPERATION lamp is blinking 5Hz Indoor fan motor lock or failure OPERATION lamp is blinking 5Hz Indoor P C board failure OPERATION and TIMER lamps are blinking 5Hz Wrong wiring of connecting cable OPERATION TIMER and FAN ONLY lamps are blinking e Gas shortage or other refrigerant cycle trouble e Heat exchanger sensor open break or short e Overload relay or thermostat trouble of compressor OPERATION TIMER and FAN ONLY lamps are blinking NOTES Cycle failure 1 The contents of items B and C and a part of item E are displayed when air conditioner operates 2 When item B and C and item B and a part of item E occur concurrently priority is given to the block of item B 3 The check codes can be confirmed on the remote controller for servicing 4 When connecting the changing kit first push priority control is executed The secondary operation lamp continues flashing For details refer to the section 10 Changing Kit 34 8 4 Self Diagnosis by Remote Control Check Code 1 If the lamps are indicated as shown B to G in Table 9 3 1 exchanger the self diagnosis by the remote control When the remote control is set to the service mode the indoor controlle
74. which compressor motor speed and the indoor fan speed are fixed starts Compressor motor speed 24 5 rps Indoor fan speed Low e When the RESET button is pushed again the operation stops e Auto Restart function is unavailable FILE NO SVM 05019 6 4 Auto Restart Function 6 4 1 How to set auto restart function The indoor unit is equipped with an automatic To set the auto restart function proceed as follows restarting function which allows the unit to restart The power supply to the unit must be on the function operating with the set operating conditions in the event will not set if the power is off of power supply being accidentally shut down The Push the RESET button located in the center operation will resume without warning three minutes of the front panel continuously for three seconds after power is restored The unit receives the signal and beeps three times This function is not set to work when shipped from the The unit then restarts operating automatically in the factory Therefore it is necessary to set it to work event of power supply being accidentally shut down When the unit is on standby Not operating Operation Motions Push RESET button for more The unit is on standby than three seconds j The unit starts to operate The green lamp is on After approx three seconds The unit beeps three times The lamp changes from and continues to operate green to orange If the unit is not

AIR-CONDITIONER

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