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AIR-CONDITIONER - Carrier Africa

1. 320 Flare 6 35 Hanger Connecting pipe 0 33m For 07 10 series Flare 9 52 For 13 series Flare 12 7 620 235 235 For stud bolt 215 215 S inimun For stud bolt 76 Hanger Se to ceiling 2 Ny 1 f Lo 1 in e o inimum nS MM to ceiling to ceiling 2 9 o 9 o o gt 0 5 2 8 4 5 TT LI c ES WP 18 1 N Hanger Hanger 9 18 90 150 160 150 _ 90 Wireless remote control Installation plate outline Center line 13 FILE NO SVM 02007 3 2 Outdoor Unit Detail Drawing Front Leg 1O 56 26 Hole R15 CE 11x14 50 Qi 25Drain outlet 660 2 211 14 hole Fan guard for 28 210 anchor bolt Cover PV 14 17 20 TOSHIBA 27 2 2 2 8 i S 9e e i t J E M 500 197 5 11 273 5 pitch 12 5 660 156 297 3 Liquid side Flare 26 35 Gas side a Flare 212 7 N Se
2. i j Pause eS ae Eo eec Longob uo Due scan eese QQ 1 1 1 i i fe 1 T 1 D ENT Cr T EEE ES d totem S I i M CES PRO BOTE ee i i i 1 i i I wo e 95 r r Se 1 1 I 1 T 9 to a a i 1 1 1 1 m 1 5 ce puse 2 i i ea 1 1 i i 5 4 4 4 gu Ou 855559 NE si s ee e 1 e SP ew 7 i i E t te Ek Seer Ten
3. i I I i i i E i i I i i 9 10 78 8765 4 3 2 1 012345 6 Outdoor temp C 0 9 35 36 37 38 39 40 41 42 43 32 33 34 Outdoor temp C 100 2 5 kW Cooling 100 3 2 kW Heating Capacity ratio FILE NO SVM 02007 2 REFRIGERANT R 410A This air conditioner adopts the new refrigerant HFC R 410A which does not damage the ozone layer The working pressure of the new refrigerant R 410A is 1 6 times higher than conventional refrigerant R 22 The refrigerating oil is also changed in accordance with change of refrigerant so be careful that water dust and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time The next section describes the precautions for air conditioner using the new refrigerant Conforming to contents of the next section together with the general cautions included in this manual perform the correct and safe work 2 1 Safety During Installation Servicing As 410 5 pressure is about 1 6 times higher than that of R 22 improper installation servicing may cause a serious trouble By using tools and materials exclu sive for R 410A it is necessary to carry out installation servicing safely while takin
4. during heating operation 49 FILE NO 5 02007 10 5 Judgement of Trouble by Every Symptom 10 5 1 Indoor unit Including remote controller 1 Power is not turned on Does not operate entirely Turn off power supply once and 5 Operation second later turn it on again Check item Conceivable principle cause NO Is OPERATION lamp blinking Measure YES Item by symptoms Does transmission mark on remote control flash normally and is its signal transmitted properly 15 it possible to turn on power supply by pressing START STOP button on remote control YES NO Remote control is defective Refer to 5 Troubleshooting for Remote Control YES Parts Does Is fuse 01 R04 C01 fan motor of indoor control 0801 C03 R01 connector board blown IC01 and T01 between D are defective and short circuit Is voltage DC 12V or 5V indicatedon YES rear of indoor is defective control board normal Is DC 310 340 Refer to lt Primary check gt or this problem is one step short of power board block suppalied to primary side of transfer switch Are DC 15V DC 12V and DC 7V Turn off breaker Transfer switch supplied to once and turn it supplied to IC 101 for secondary on again after secondary power supply or
5. 62 FILE NO 5 02007 10 9 How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 1 Symptom Outdoor fan motor does not rotate e Outdoor fan motor stops within several ten seconds though it starts rotating Outdoor fan motor rotates or does not rotate according to the position where the fan stopped etc 2 Cause The following causes are considered when the outdoor fan motor does not normally rotate 1 Mechanical lock of the outdoor fan motor 2 Winding error of the outdoor fan motor 3 Motor drive circuit error of the outdoor P C board 3 How to simply judge whether outdoor fan motor is good or bad Turn OFF the breaker Disconnect two connectors CN300 of the outdoor fan motor from the inverter Does the fan rotate without trouble when rotating it with hands If the resistance value between the connector CN300 CN300 Motor winding is 70 to 150Q it is normal Outdoor P C board error NOTE However GND circuit error inside of the motor may be accepted in some cases when the above check is performed When the fan motor does not become normal even if P C board is replaced the outdoor fan motor 63 11 1 Indoor Unit Part name Front panel Electrical part Horizontal louver FILE NO SVM 02007 11 HOW TO REPLACE THE MAIN PARTS Procedures How to remove the front panel 1 Stop operation of the air conditioner and
6. 4 IC801 8 CN800 SWRT R822 R821 R820 R819 C505 R617 8817 R808 R814 8602 R603 R606 R615 R616 7 lt x 2 2 4 TOSHIBA FO4 T3 15A 250V 866 04 L P13 BLU SOLDER SIDE 73 FILE NO 5 02007 12 EXPLODED VIEWS AND PARTS LIST 12 1 Indoor Unit E Parts Assy 401 Location Description Description No P No 40 404 1 43769319 Temperature Sensor TC 10kQ 25 402 43 60001 Terminal 2P 20 405 43 69079 Board ASSY WRS LED 403 43T69320 Temperature Sensor 10kQ 25 406 43 69321 P C Board MCC 867 74 FILE NO SVM 02007 12 2 Indoor Unit Electric Parts Assem bly Location Description Location No No 43 00352 Front Panel Assy 43122002 Bearing 43 09316 Inlet Grille Assy 43739301 Base Bearing 43 03302 Back Body Assy 43 20302 Cross Flow Fan 43T80301 Air Filter 43 39302 Band Motor L 43T09309 Horizontal Louver 43721327 Motor Fan 340 30 2 DC 340V 43 08350 LED Panel Assy 43 39303 Band Motor R 43 70002 Drain Hose 43 82301 Plate Installation 43779301 Cap Drain 43T69306 Remote Controller Wireless 43T21321 Motor L
7. 340V between NO fan operate O of motor YES connector CN10 Turn off indoor unit and remove connector from motor Then press Motor connection condition START STOP button Is it possible to detect DC 15V NO on remote control to between and 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 30 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 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 50 and 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 5 and 370 of motor connector CN10 Check this condition within 15 seconds after starting unit Fan motor operates normally Replace bearing 52 FILE NO 5 02007 4 Indoor fan motor aut
8. The unit stops operating The green lamp is turned off 4 After approx three seconds The unit beeps three times If the unit is required to operate at this time push TEMPORARY TEMPORARY button button once more or use the remote control to turn it on e While this function is being set if the unit is in operation the orange lamp is on e This function can not be set if the timer operation has been selected When the unit is turned on by this function the louver will not swing even though it was swinging automatically before shutting down e While the filter check lamp is on the TEMPORARY button has the function of filter reset button 31 FILE NO SVM 02007 8 4 2 How to cancel auto restart function To cancel auto restart function proceed as follows Repeat the setting procedure 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 Push TEMPORARY button for more than three seconds TEMPORARY button When the unit is in operation Operation Push TEMPORARY button for more than three seconds TEMPORARY button Motions The unit is on standby The unit starts to operate The orange lamp is on J After approx three seconds The unit beeps three times and continues t
9. 4 Take out the connecting cable through the cable slot on the rear panel 50 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 Teminal block Screw Cord clamp Terminal cover Earth wire Connecting cable e Wire type More than HO7RN F or 2451EC66 1 0 mm or more Earth line 80 mm Connecting cable about 15 Fig 9 2 5 FILE NO SVM 02007 9 2 5 Piping and Drain Hose Installation Piping and Drain Hose Forming Since dewing results in machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material Rear right m Left 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 2 Changing drain hose For left connection left bottom
10. windings of compressor detect circuit error occurred h Replace board 2 Measure resistance between wires of compressor and perform short circuit Replace compressor Current detect circuit error All off Displayed when Even if trying operation again all error is detected operations stop immediatelly Replace P C board Being out of place All off Displayed when 1 Check outdoor temp sensors disconnection or short error is detected TE TS circuit of outdoor temp 2 Check P C board 111 sensor Disconnection short All off Displayed when 1 Check discharge temp sensor TD circuit of discharge temp error is detected 2 Check board sensor Outdoor fan drive system All off Displayed when Position detect error over current error error is detected protective operation of outdoor fan Ut drive system fan lock etc Replace P C board or fan motor Outdoor heat exchanger Operation 1 Check outdoor heat exchanger Not 1071 temp sensor error continues temp sensor TE displayed r 2 Check P C board Compressor drive output All off Displayed when When 20 seconds passed after start Outdoor Il error Compressor error error is detected up position detect circuit error board th lock missing etc occurred Replace compressor Break down Return serial signal has Operation Flashes when 1 Repeat Start and Stop with interval Ot
11. 0 64 Diode DB01 D3SBA60 4A 600V Capacitor C03 KMH450VNSN120M25C 120uF 450V Fuse 01 FCU250V3 15A T3 15A 250V Power supply IC 1 01 STR L472 Varistor R21 R109 15G561K 560V Resistor R01 RF 5TK4R7 4 7 5W Louver motor Parts name SC coil Noise filter MP24GA Model name ADR2510 020T4B Output Rated 1W 16poles 1phase DC 12V 10 2mH DC DC transformer SWT 43 Primary side DC280V Secondary side 7 5V x 1 13V x 1 26 5V x 3 16V x 1 15V x 1 Reactor CH 51 Z T L 19mH 10 Outside fan motor UE6 21SS5PA 18W Fan control relay AJQ1341 Coil DC12V Contact AC250V 2A Outside air temp sensor TO sensor Inverter attached 10k 25 Heat exchanger temp sensor TE sensor Inverter attached 10k 25 Terminal block 6P 20A AC250V Fuse For protection of switching power source 3 15A AC250V For protection of inverter input overcurrent 15A AC250V Electrolytic capacitor LLQ2G501KHUATF 400LISN500K35F 500uF DC400V x 2 pieces IGBT module MP6761 15A 600V Compressor DA89X1F 20D 3 phases 4 poles 750W Compressor thermo PW 2AL OFF 125 4 C ON 90 5 C Rectifier D15XB60 15A 600V 4 way valve coil LB6 17 220 240 FILE NO 5 02007 6 REFRIGERANT CYCLE DIAGRA
12. Abnormal Voltage does not vary 2 Outdoor unit stops in a little while after operation started lt Check procedure gt Select phenomena described below 1 The outdoor unit stops 10 to 20 minutes after operation started and 10 minutes or more are required to restart the unit Gas circulation amount is down Measure gas pressure Thermo operation of compressor 2 Ifthe unit stops once it dose not operate until the power is turned on again To item of compressor does not operate 3 The outdoor unit stops 10 minutes to 1 hour after operation started and an alarm is displayed Discharge temp error check code 03 1E Sensor temp error check code 02 1C Gas shortage Gas leak Pipe clogging Gas leak Miswiring of connecting wires of indoor outdoor units Refer to the chart in 10 6 Clogging of pipe and coming off TC sensor 55 FILE NO 5 02007 10 6 Check Code 1C Miswiring in indoor outdoor units and 1E lt Check procedure gt Check item Conceivable principle cause Gas leakage disconnection of Discharge temp TS TC sensors Check code error gas leakage 02 1C Check code 03 1E Item by symptoms Valve drive check NO Is connector of coil connected to inverter Set it correctly YES Is positioning sound of valve sound hitting to stopper heard from valve when the air conditioner starts the operation after turning off power of the air conditioner once
13. Fan Speed Selection r ON TIMER Setting OFF TIMER Setting H Louver Auto Swing FILE NO SVM 02007 7 2 Outdoor Unit Inverter Assembly 105591 Li a Li Li Li Aejay IN Hun Joopul 5 9 500 50108 4 99 Josues 1910 2 00 JeueAu 99 9p 2 10108 UBIH UB 100pinQ 04009 12 1ueuno 19 0 186176 041009 sep 1 14 0 72 uonounj sis ulu s Josues 108498 edid epis sed uonoed09 10108 108498 Jeyy 9SION 9 0 J9149Au02 998 OOW yun ZHOS 062 Ol Joopul 104 21 FILE NO SVM 02007 8 OPERATION DESCRIPTION 8 1 Outlined of Air Conditioner Control This air conditioner is a capacity variable type air conditioner which uses DC motor for the indoor fan motor and AC motor for the outdoor fan motor And the capacity proportional control compressor which can change the motor speed in the range from 18 to 120 rps is mounted The DC motor drive cir
14. motor and turn on the power supply Start the unit the following condition e Set the operation mode to FAN Setthe fan speed level to HIGH The unit compressor operates continuously in the above condition Check power supply voltage 1 Between CN23 and CN24 DC 15 60V Check whether or not all lamps OPERATION TIMER PRE DEF FILTER and Hi POWER are indicated for 3 seconds and they return to normal 3 seconds later 1 Check whether or not the com pressor operates 2 Check whether or not the OPERATION lamp flashes Check whether or not the compressor operates Check whether or not the OPERATION lamp flashes Check it is impossible to detect the voltage DC 15V between 3 and 4 of the motor terminals The motor does not operate But it is possible to receive the signal from the remote controller The motor rotates but vibrates strongly Heating and cooling model 1 03 and 1 04 are defective The lamps are defective or the housing assembly CN13 is defective The temperature of the indoor heat exchanger is extremely low The connection of the heat exchanger sensor is loose The connector is disconnected 01 The heat exchanger sensor and the P C board are defective Refer to Table 10 4 1 The main board is defective The temperature of the indoor heat exchanger is extremely high The connection of the heat exchanger sensor short cir
15. 4 Perform the work of 2 5 Remove the screw ST1T 4 x 102 1 pc fixing the main body and the inverter box 6 Remove the lead wire from the holder on the terminal block 7 Disconnect the connectors of various lead wires Requirement As each connector has a lock mechanism avoid removing the connector by holding the lead wire but by holding the connector 68 FILE NO SVM 02007 Remarks Inverter cover PC board Soldered surface Discharging time Discharging period 10 seconds or more The connector is one with lock so remove it while pushing the part indicated by an arrow by holding the connector not by pulling the lead wire FILE NO SVM 02007 Part name Procedures Remarks Control board assembly 1 Disconnect lead wires and connectors CN601 connected from the control board assembly to other parts 1 Lead wires e Connection with terminal block 3 wires Black White Orange e Connection with compressor remove the connector 3P Connection with reactor remove the connector 2P Connectors 6 positions CN300 Outdoor fan white See Note 1 CN701 4 way valve Yellow CN601 TD sensor 2P White CN602 TO sensor 2P White CN500 Case thermo 2P White Note 1 As the connector has a stopper release the housing lock when removing CN300 CN701 As CN300 and CN701 are connectors with lock remove while pushi
16. After determining the pipe hole position on the mounting plate gt 1 The supply voltage must be the same as the rated voltage of the air drill the pipe hole 265 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 Wire type More than HO7RN F or 2451 66 1 0 mm or more be sure to use a pipe hole brim ring sold separately 39 This appliance can 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 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 S be used E Perform wiring works so as to allow a generous wiring capacity 9 2 4 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
17. Miswiring in indoor outdoor units and 1E 10 7 How to Diagnose Trouble in Outdoor Unit 10 8 How to Check Simply the Main Parts 10 9 How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 11 HOW TO REPLACE THE MAIN PARTS 11 1 Indoor Unit 11 2 Microcomputer 11 3 Outdoor Unit 12 EXPLODED VIEWS AND PARTS LIST 12 1 Indoor Unit E Parts Assy 12 2 Indoor Unit 12 3 Outdoor Unit 12 4 Outdoor Unit E Parts Assy FILE NO SVM 02007 1 SPECIFICATIONS 1 1 Specifications Unit model Indoor RAS 10UKV E Outdoor RAS 10UAV E Current limited Cooling capacity 2 5 Cooling capacity range 0 9 3 0 Heating capacity 3 2 Heating capacity range 0 7 4 0 Power supply 220 240V 1Ph 50 60Hz Electric characteristics Indoor Operation mode Cooling Heating Running current 0 15 0 15 Power consumption 30 30 Power factor 87 87 Outdoor Operation mode Cooling Heating Running current 3 42 3 69 Power consumption 750 810 Power factor 95 95 Starting current 3 84 COP Cooling Heating 3 21 Operation noise Indoor High Cooling Heating 38 39 Low Cooling Heating 27 29 Outdoor Cooling Heating 46 47 Indoor unit Unit model RAS 10UKV E Dimension Height 275 Width 790 Depth 208 Net weight 10 Fan motor output
18. Primary Judgement To diagnose the troubles use the following methods 1 Judgement by flashing LED of indoor unit 2 Self diagnosis by service check remote controller 3 Judgement of trouble by every symptom Firstly use the method 1 for diagnosis Then use the method 2 and 3 to diagnose the details of troubles 45 FILE NO SVM 02007 10 3 Judgement 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 10 3 1 Lamps Self diagnosis OPERATION lamp is blinking 1Hz Power failure 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 1Hz SHz OPERATION lamp is blinking 5Hz OPERATION lamp is blinking 5Hz Indoor fan motor lock or failure OPERATION lamp is blinking BHz Indoor P C board failure OPERATION and TIMER lamps are blinking 5 2 Wrong wiring of connecting cable OPERATION TIMER and FAN ONLY lamps are blinking Gas shortage or other refrigerant cycle trouble Heat exchanger sensor open break or short Overload relay or thermostat trouble of compressor OPERATION TIMER and FAN ONLY lamps are blinking NOTES Cycle failure 1 The contents of i
19. Then when the difference between them gets smaller the horizontal louver returns automatically 3 Heating operation The preset temperature increases 2 C value of the preset temperature on the remote control does not change If the difference between the preset temperature and the room temperature is big the horizontal louver moves to the Hi POWER position automatically Then when the difference between them gets smaller the horizontal louver returns automatically 4 The Hi POWER mode can not be set in Dry or Fan only operation 8 6 Filter Check Lamp When the elapsed time reaches 1000 hours the filter check lamp indicates After cleaning the filters turn off the filter check lamp 8 6 1 How to turn off filter check lamp 1 Press FILTER button on the remote control 2 Push TEMPORARY button on the indoor unit Note if TEMPORARY button is pushed while the filter check lamp is not indicating the indoor unit will start the Automatic Operation 33 FILE NO SVM 02007 8 7 Remote control 8 7 1 Remote control and its functions 0 OG Infrared signal emitter Transmits a signal to the indoor unit START STOP button Press the button to start operation A receiving beep is heard Press the button again to stop operation A receiving beep is heard If no receiving sound is heard from the indoor unit press the button twice Mode select button MOD
20. 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 D type must be used for the power supply line of this air conditioner RAS 13UKV E only 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 MORE 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 TH
21. 0 5A than each set value return to above item 1 28 or more passed 4 FILE NO SVM 02007 TO 16 0 15 5 11 0 10 5 Outside air temp C Fig 8 2 8 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 or lower continued for 2 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 77 or lower and temperature lowered by 2 5 C than the minimum value of the outdoor heat exchanger during 10 to 15 minutes count time continued for 2 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 exchanger during 10 to 15 minutes count time continued for 2 minutes or more d If the following three conditions are satisfied defrost operation Timer defrost starts after heating operation for 37 minutes D Setting on remote control HEAT xx mode HIGH Fan 30 C temperature v 1 2 Room temperature is 19 C to 24 C and outsi
22. 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 64 5 Tighten the screw for the ground connection 7 Tighten the screw on the electrical part cover Remarks H j Screws Left shaft 1 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 4 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 center 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 fl
23. Adjust the flow rate of Nitrogen gas so that it is lower than 0 05 m Hr or 0 02 Mpa 0 2 cm by means of the reducing valve 6 After performing the steps above keep the Nitrogen gas flowing until the pipe cools down to a certain extent temperature at which pipes are touchable with hands 7 Remove the flux completely after brazing Flow meter Stop valve Nitrogen gas cylinder From Nitrogen cylinder 1 23 Nitrogen gas Rubber plug Fig 2 5 1 Pre vention of oxidation during brazing 12 FILE NO 5 02007 3 CONSTR UCTION VIEWS 3 1 Indoor Unit Front panel ir inlet Air filte Heat exchanger Air inle at exchang Back body 275 M e Air outlet 48 Knock out system eo Knock out system IEEE LO 11s 120 590 80 gt s apo mn Drain hose 0 54m Connecting pipe 0 43m
24. Do not put the drain hose end drain hose end into water in the drainage ditch gt gt Fig 9 2 16 2 Put water in the drain 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 x B Extension drain hose 4 Drain hose Inside the room Arrange the drain pipe for proper drainage from the unit Improper drainage can result in dew dropping Fig 9 2 17 This air conditioner has the structure designed to drain water collected from man 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 9 2 18 41 9 3 OUTDOOR UNIT 9 3 1 Installation Place e A place which provides the spaces around the outdoor unit as shown in the left diagram e A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration A place where the operation noise and discharged air do not disturb users neighbors A place which is not exposed to a strong wind A place free of a leakage of combustible gases A place which does not block a passage
25. Does indoor unit operate when moving remote control near receiver or indoor unit Press START STOP YES button Batteries are exhausted Does indoor unit start to operate by automatic restart function Is there any thyristor fluorescent light nearby Is transmission NO mark indicated NO Does indoor unit Does radio sound is affected by remote control when a signal is transmitted at distance of 5 cm from radio Remote control is defective P C board is defective Avoid direct Keep indoor Replace P C board Replace batteries Normal operation Replace remote sunlight control unit d from Note After replacing batteries thyristor press the RESET button fluorescent light with a tip of a pencil 54 FILE NO 5 02007 10 5 2 Wiring Failure Interconnected and serial signal wire 1 Outdoor unit does not operate 1 18 the voltage between 2 and 3 of the indoor terminal block varied Confirm that transmission from indoor to outdoor is correctly performed based on the following diagram NOTE e Measurement should be performed 2 minutes and 30 seconds after starting operation e Be sure to prepare a diode for judgment Terminal block on indoor side Red 8 552770 or equivalent or J type Diode with rated voltage of 400V White or more is acceptable D Terminal block Tester Normal time Voltage swings between DC15V and 60V
26. Heat exchanger Ind condition C pipe temp ee pressure fan revolution Indoor Outdoor P MPa T1 C T2 C mode rps 20 7 6 24 40 0 High 70 Note 1 Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent Thermistor themometer 2 Connecting piping condition 5m 19 FILE NO 5 02007 7 CONTROL BLOCK DIAGRAM 7 1 Indoor Unit Heat Exchanger Sensor Functions Operation Louver Control Display Temperature Sensor 3 minute Delay at Restart for Compressor Display 1 Filter Sign Infrared Rays Signal Receiver Motor Revolution Control Display a Ds Initializing Circuit Processing PRE DEF 1 Sign Display Infrared Temperature Processing bo Clock Frequency Timer Hi Power gt 36 7KHz Oscillator Circuit Sign Display aped Indoor Fan Serial Signal Communication Motor Control LS Noise Filter 1 1 Remote 1 From Outdoor Unit Serial Signal Communication Louver Direction Setting H H H Hi power Filter Reset Infrared Rays REMOTE CONTROL poe Remote _______ Operation START STOP Operation Mode Selection AUTO COOL DRY HEAT FAN ONLY Temperature Setting m
27. NOTE After all the operations stopped by the remote controller the power keeps being supplied to outdoor unit for approx 3 minutes If operating the air conditioner by remote controller again just after all the operations stopped by the remote controller positioning of the valve is not performed when outdoor unit is activated because supplying power to the outdoor unit is not interrupted After positioning of the valve activate the compressor and the outdoor fan It takes approx 7 seconds for positioning of the valve and sound ticktack hitting sound to stopper is heard for approx 0 5 seconds at least of that period As the sound is low check sound by using screwdriver etc Replace coil valve Are temp sensors of indoor outdoor units correctly set to the holder NOTE The temperature sensors which are used to control electronic control valve include indoor heat exchanger sensor TC outdoor heat exchanger temp sensor TE Set it correctly Gas amount check and valve clogging check Remove TC sensor connector from the P C board in indoor unit Remove connector from the P C board Operate the air conditioner in COOL mode by TEMP button Pi sound is heard if keeping pushed for 10 seconds The operation enters temporary operation mode which fixes opening degree of P M V and No of revolution of compressor Check condensation at outlet of P M V and then check operating pressure from the service
28. When the outdoor unit is to be installed in an elevated position be sure to secure its feet An allowable length of the connecting pipe is up 10m for 10UKV E and 15m for 13UKV E e An allowable height level is up to 8m for 10UKV E and 10m for 13UKV E A place where the drain water does not raise any problem M CAUTION N 1 Install the outdoor unit without anything blocking the air discharging 2 When the outdoor unit is installed in a place exposed always to strong wind like a coast or on a high story of a building secure the normal fan operation using a duct or a wind shield 3 Specially in windy areas install the unit to prevent the admission of wind 4 Installation in the following places may result trouble Do not install the unit in such places e A place full of machine oil Asaline place such as the coast A place full of sulfide gas A place where high frequency waves are likely to be generated as from audio equipment welders and NV medical equipment 9 3 2 Refrigerant Piping Connection 1 Cut the pipe with a pipe cutter Q X Obliquity Warp Ej Roughness Fig 9 3 2 2 Insert a flare nut into the pipe and flare the pipe Projection margin in flaring A Unit mm Rigid Clutch type Outer dia of copper pipe R 410A toolused Conventional tool used 6 35 0100 5 1 0 to 1 5 1 0 to 1 5 i Imperial Wing nut type Outer dia of
29. below Refer to the check points in servicing written on the wiring diagrams attached to the indoor outdoor units Table 10 1 No Troubleshooting Procedure Page First Confirmation 44 Primary Judgement 45 Judgement by Flashing LED 46 of Indoor Unit Self Diagnosis by Remote Controller 47 Judgement of Trouble by 50 Every Symptom 6 How to Check Simply the Main Parts 58 25 i i 808 ux s 4 318 In m Discharging position Discharging period 10 seconds or more 3 A QE if OR s i 2078 itt E73 33 i gt jr 55 13 bit at Hi 1 TIT m i 18 sa 5 5 3 24 z A large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging voltage DC280V remains and discharging takes a lot of time After turning off the power source if touching the charging section before discharging an electrical shock may be caused Discharge the electrolytic capacitor completely by using soldering iron etc lt Discharging method gt 1 Remove the inverter cover plating by opening four mounting claws 2 As shown below connect the discharge resistance approx 100Q40W or plug of the soldering iron to voltage betwee
30. compressor 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 transistor 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 compressor 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 exchange inverter output 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 compressor differs according to the operation status COOL HEAT DRY Table 8 1 1 Compressor revolution range Operation mode Compressor revolution rps COOL 21 to 66 HEAT 21 to 83 8 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 reducing motor speed so that value becomes closest to the command within the limited value 8 1 3 Power factor improvement control Power fact
31. connection and rear left connection s piping it is necessary to change the drain hose and drain cap lt 5 Os V 111 Piping preparation Die cutting Front panel slit How to remove the Drain Clip drain cap by needle nose plier and pull out Fig 9 2 6 How install the Drain Hose Firmly insert drain hose connecting part until hitting on a heat insulator Heat insulator PE Fig 9 2 7 How to fix the Drains 1 Insert hexagonal wrench 4 mm in a center head Fig 9 2 8 2 Firmly insert drains No gap Do not apply lubricating oil refrigerant machine oil when inserting the drain cap lt Application causes deterioration and drain leakage of the plug Insert a hexagon wrench 4 mm Fig 9 2 9 Firmly insert the drain hose and drain cap otherwise water may leak 40 In case of right or left piping e 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 9 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 Slit Fig 9 2 11 Left hand connection w
32. copper pipe R 410A 6 35 1 5 to 2 0 9 52 1 5 to 2 0 Tightening Connection Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers Then tighten the nut with a spanner and torque wrench as shown in the figure Half union Flare nut Externally threaded side 77 2 Use a wrench to secure Use a torque wrench to tighten Fig 9 3 4 __ Internally threaded side FILE NO SVM 02007 Do not apply an excess force Otherwise the nut may crack depending on the conditions Unit N m Outer dia of copper pipe Tightening torque 26 35 mm 14 to 18 1 4 to 1 8 kgf m 33 to 42 3 3 to 4 2 09 52 mm Tightening torque for connection of flare pipe The pressure of R 410A is higher than R 22 Approx 1 6 times Therefore securely tighten the flare pipes which connect the outdoor unit and the indoor unit with the specified tightening torque using a torque wrench If each flare pipe connects incoorectly it may cause not only a gas leakage but also a trouble or the refrigeration cycle Shaping pipes 1 How to shape the pipes Shape the pipes along the incused line on the outdoor unit 2 How to fit position of the pipes Put the edges of the pipes to the Flare at indoor unit side Flare at outdoor unit side Fig 9 3 5 place with a distance of 85mm os from the incused line 2 Incused line F
33. drain hose use an optionally available RB 821SW or commercially available one 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 The part marked with asterisk is packaged with the outdoor unit New tools for R 410A Applicable to R 22 model Changes Gauge manifold has been changed 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 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 sure 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 a commo
34. port i YES Existence of condensation at outlet of P M V If there is condensation at Replace valve outlet 1 4 inch 2 26 35 mm valve side the valve is clogged Check the operating pressure from service port and add gas if pressure is low Add gas 56 10 7 How to Diagnose Trouble in Outdoor Unit 10 7 1 Summarized inner diagnosis of inverter assembly FILE NO SVM 02007 Turn OFF the power breaker and remove 3P connector which connects inverter and compressor Check whether 15A fuse on the control board assembly is blown or not 01 Remove Preparation connector of compressor NG Replace fuse Check electrolytic capacitor diode block 1 etc Check 15A fuse Part 01 OK of electrolytic capacitor Check electrolytic capacitor diode DB01 etc Turn on power breaker and operate the air conditioner in COOL mode by short circuit of the timer Measure terminal voltage of the electrolytic capacity Operation Does outdoor NO fan rotate YES Does LED on control NYES board flash or go on Measurement NO 500mF 400WV x 2 Remove connector CN300 of outdoor fan motor and using a tester check resistance value between every phase at motor side After operation turn off the power breaker after 2 minutes 20 seconds passed and discharge the electrolytic capacity by soldering iron Check voltage between mot
35. same as that for oil designated by the manufacturer If any other oil is conventional R 22 Incidentally when the used the lubricating oils may deteriorate and cause torque is weak the gas leakage may occur the compressor to burn out Table 2 2 7 Tightening torque of flare for R 410A Reference v alues Tightening torque of torque Nominal Outer diameter Tightening torque wrenches available on the market diameter mm N m kgf cm N m kgf m 14 to 18 140 to 180 180 33 to 42 330 to 420 50 to 62 500 to 620 63 to 77 630 to 770 FILE NO 5 02007 2 3 Tools 2 3 1 Required tools The service port diameter of packed valve of the outdoor unit in the air conditioner using R 410A is changed to prevent mixing of other refrigerant To reinforce the pressure resisting strength flare processing dimensions and opposite side dimension of flare nut For 212 70 copper pipe of the refrigerant piping are lengthened The used refrigerating oil is changed and mixing of oil may cause a trouble such as generation of sludge clogging of capillary etc Accordingly the tools to be used are classified into the following three types 1 Tools exclusive for R 410A Those which cannot be used for conventional refrigerant R 22 2 Tools exclusive for R 410A but can be also used for conventional refrigerant R 22 3 Tools commonly used for R 410A and for conventional refrigerant R 22 The t
36. 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 How to remove the electrical part 1 Remove the front panel with procedure 1 2 Remove the screw holding the electrical part cover 3 Remove the drain guide 4 Disconnect the 2 connectors 3P for the fan motor and the connector 5P for the louver motor from the board assembly 5 Pull out the TC sensor from the sensor holder 6 Remove the screw for the ground connection remove the 2 screws 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 2 screws 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 unit to the back body 4 Attach the TC sensor to the holder 6 Assemble the drain guide the TC sensor wire should be covered by the drain guide 1 Remove the front panel and the electrical part following procedure 2
37. 1 0 to 1 5 Table 2 2 4 Dimensions related to flare ocessing f or R 22 Outer diameter mm Thickness mm A mm 2 0 to 2 5 Flare tool for R 410A clutch type Conventional flare tool Clutch type 0 5 to 1 0 Wing nut type 1 0 to 1 5 0 5 to 1 0 1 0 to 1 5 0 5 to 1 0 1 0 to 2 0 Nominal diameter 0 5 to 1 0 Table 2 2 5 Flare and flare n ut dimensions for R 410A Outer diameter mm Thickness mm Dimension mm 1 0102 0 Flare nut width mm Nominal diameter Table 2 2 6 Flare and flare n ut dimensions for R 22 Outer diameter mm Thickness mm Dimension mm Flare nut width mm FILE NO SVM 02007 24 Igo Fig 2 2 2 Relations between flare n ut and flare seal surface 2 Flare Connecting Procedures and Precautions When it is strong the flare nut may crack and a Make sure that the flare and union portions do may be made non removable When choosing not have any scar or dust etc the tightening torque comply with values designated by manufacturers Table 2 2 7 b Correctly align the processed flare surface with shows reference values the union axis c Tighten the flare with designated torque by Note means of a torque wrench The tightening When applying oil to the flare surface be sure to use torque for R 410A is the
38. 30 Air flow rate Cooling Heating 530 590 Outdoor unit Unit model RAS 10UAV E Dimension Height 530 Width 660 Depth 240 Net weight 28 Compressor Motor output 750 Type Single rotary type with DC inverter variable speed control Model DA89X1F 20D Fan motor output 18 Air flow rate Cooling Heating 1300 1300 Piping connection Type Flare connection Indoor unit Liquid side 26 35 Gas side 9 52 Outdoor unit Liquid side 26 35 Gas side 29 52 Maximum length Per unit 10 Maximum chargeless length 10 Maximum height difference 8 Refrigerant Name of refrigerant R 410A Weight 0 64 Wiring connection Power supply 3 Wires includes earth Interconnection 4 Wires includes earth Usable temperature range Indoor Cooling Heating 21 32 0 28 Outdoor Cooling Heating 10 437 10 24 Accessory Indoor unit Installation plate Wireless remote control Remote controller holder Flat head wood screw Purifying filter Zeolite filter Batteries 2 Mounting screw 6 24 251 Installation manual Owners manual Outdoor unit Drain nipple e The specification may be subject to change without nitice for purpose of improvement cg FILE NO SVM 02007 1 2 Operation C
39. D and HIGH as described in Table 8 1 2 If AUTO mode is selected the fan motor speed is automati cally controlled by the difference between the preset temperature and the room temperature Low 2 LOW MED 2 MED Table 8 1 2 Remote control Fan mode Cooling Air flow volume m3 h Air flow volume m3 h and Fan only Heating 24 8 2 Description of Operation Circuit 1 When turning on the breaker the operation lamp 2 blinks This means that the power is on or the power supply is cut off When pressing START STOP button on the remote control receiving beep sounds from the indoor unit and the next operation is performed together with opening the vertical air flow louver Once the operation mode is set it is memorized in the microcomputer so that the previous operation can effected thereafter simply by pressing START STOP button 8 2 1 Fan only operation MODE button on the remote control is set to the Fan only operation 1 When FAN button is set to AUTO the indoor fan motor operates as shown in Fig 8 2 1 When FAN button is set to LOW LOW MED MED or HIGH the motor operates with a constant air flow a 2 3 2 5 5 1 2 1 5 2 1 40 5 0 Preset temp 22 NOTE 1 The values marked w
40. E Press this button to select a mode Each time you press the button a mode is selected in a sequence that goes from A Auto changeover control zx Cool 0 Dry Heat Fan only and back to A A receiving beep is heard Temperature button v 84 The set temperature is increased up to 30 The set temperature is dropped down to 17 C A receiving beep is heard Fan speed button FAN Press 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 A receiving beep is heard Auto louver button SWING Press this button to swing the louver A receiving beep is heard Press the FIX button to stop the louver swinging A receiving beep is heard Set louver button FIX Press this button to adjust the air flow direction A receiving beep is heard Off timer button OFF Press this button to set the OFF timer On timer button ON Press this button to set the ON timer Reserve button SET Press this button to reserve time settings A receiving beep is heard Cancel button CLR Press this button to cancel ON timer and OFF timer A receiving beep is heard High power button Hi POWER Press this button to start the high power operation 34 FILE NO SVM 02007 Memory button ME
41. E NO SVM 02007 Causes Impulse voltage was applied or the indoor fan motor short circuited Remove the connector of the motor and turn on the power supply If OPERATION lamp flashes once per second it is not necessary to check steps 1 to 3 in the right next column Check power supply voltage 1 Between TP2 and TP3 AC 220 240V 2 Between and DC 310 340V 3 Between of C10 and output side of IC08 DC 15V 4 Between 12V and GND 5 Between 5V and GND 1 The terminal block or the cross over cable is connected wrongly 2 The capacitor C01 line filter 01 resistor R01 or the diode 0 01 is defective 3 1 01 1 02 and 01 are defective 4 1 01 1 02 1 07 and 01 are defective Push START STOP button once to start the unit Do not set the mode to Fan Only or On Timer operation Shorten the line of the restart delay timer and start unit Push START STOP button once to start the unit e Shorten the time of the restart delay timer Set the operation mode to COOL Set the fan speed level to AUTO Set the preset temperature much lower than the room temperature The unit compressor operates continuously in the above condition If the above condition No 5 still continues start the unit in the following condition e Set the operation mode to HEAT e Set the preset temperature much higher than room temperature Connect the motor connector to the
42. E REFRIGERATION CYCLE IF AIR OR ANY OTHER GAS 15 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 e 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 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 pa
43. FILE NO SVM 02007 TOSHIBA SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS 10UKV E RAS 10UAV E Apr 2002 FILE NO SVM 02007 CONTENTS SPECIFICATIONS 1 1 Specifications REFRIGERANT R 410A 2 1 Safety During Installation Servicing 2 2 Refrigerant Piping Installation 2 3 Tools 2 4 Recharging of Refrigerant 2 5 Brazing of Pipes CONSTRUCTION VIEWS 3 1 Indoor Unit 3 2 Outdoor Unit WIRING DIAGRAM 4 1 Indoor Unit 4 2 Outdoor Unit SPECIFICATION OF ELECTRICAL PARTS 5 1 Indoor Unit 5 2 Outdoor Unit REFRIGERANT CYCLE DIAGRAM 6 1 Refrigerant Cycle Diagram 6 2 Operation Data CONTROL BLOCK DIAGRAM 7 1 Indoor Unit 7 2 Outdoor Unit Inverter Assembly OPERATION DESCRIPTION 8 1 Outlined of Air Conditioner Control 8 2 Description of Operation Circuit 8 3 Temporary Operation 8 4 Auto Restart Function 8 5 Hi POWER Mode Hi POWER button on the remote control is pressed 8 6 Filter Check Lamp 8 7 Remote control INSTALLATION PROCEDURE 9 1 Safety Cautions 9 2 INDOOR UNIT 9 3 OUTDOOR UNIT FILE NO 5 02007 10 HOW TO DIAGNOSE THE TROUBLE 10 1 First Confirmation 10 2 Primary Judgement 10 3 Judgement by Flashing LED of Indoor Unit 10 4 Self Diagnosis by Remote Control Check Code 10 5 Judgement of Trouble by Every Symptom 10 6 Check Code 1C
44. LOW 2710 HIGH However to prevent cold draft revolution speed of the fan is restricted by indoor heat exchanger when air flow is AUTO Fig 8 2 7 and starting of FAN Manual Basic control C 0 LOW temperature 0 5 1 1 1 5 2 2 2 5 M 58 EL 9 5 0 CO 55 HIGH FAN AUTO 71 72 3 Approximate revolution speed of M and L to linear accordingly to temperature Fig 8 2 6 Setting of air flow Cold draft preventing control The upper limit of fan revolution speed is shown below A 46 34 45 33 Approximate revolution speed of HIGH and SUL 35 5 B linear by Tc SUL A 4 A 4 8 A 8 SUL NOTE 1 Stop FAN AUTO Starting of FAN Manual Fig 8 2 7 Cold draft preventing control NOTES 1 Stops for 2 minutes after thermostat OFF 2 24 C when the set temperature is 24 C or more Set temperature when the set temperature is below 24 C 27 In starting and in stability f instarting e Until 12 minutes e When 12 to 25 passed after minutes passed operation start after operation e When 12 to 25 start and room minutes passed temperature is after operation higher than set start and room temp 3 temperature is 3 C e When 25 minutes or lower than set temperature after operation start e Room temperature lt Set temperature 49 e Room tempera t
45. M 6 1 Refrigerant Cycle Diagram P Pressure measurement Gauge attaching port Vacuum pump connecting port Deoxidized copper pipe i Outer dia 9 52mm Thickness 0 80mm 4 way valve VT7101D Note e The maximum length of the pipe Cross flow fan 5 5 Deoxidized copper pipe s 8 eoxidized copper pipe 10 Outer dia 6 35 85 2 ye Thickness 0 80mm NE 56 5 ar Sectional shape ar lt 5 2 of heat insulator ila lt Temp measurement Temp measurement INDOOR UNIT Indoor heat exchanger Muffler 25 Outdoor heat exchanger Compressor DA89X1F 20D Split capillary 21 0 6007 1 0x6002 TE D D Propeller fan OUTDOOR UNIT Gas leak check position gt Refrigerant flow Cooling Refrigerant flow Heating for this air conditioner is 10 m The additional charging of refrigerant is unnecessary because this air conditioner is designed with charge less specification 18 FILE NO 5 02007 6 2 Operation Data lt Cooling gt Temperature Heat exchanger diti Standard ipet Indoor condition pressure Pipe temp fan revolution Indoor Outdoor P MPa T1 C T2 C mode rps 27 19 35 1 1 13 5 49 High 54 lt Heating gt Temperature Standard
46. MO Press this button to stand by memorizing the settings Press the button again for more than 4 seconds to memorize the setting indicated on the remote control and mark is indicated Automatic operation button AUTO Press this button to operate the air conditioner automatically A receiving beep is heard ECO timer button ECO Press this button to start the ECO timer OFF timer operation You can select the OFF timer time from among four settings 1 3 5 or 9 hours FILTER button Press this button to turn off the filter cleaning lamp on the indoor unit Press this button after cleaning the air filter PRESET button Press this button to operate the air conditioner according to settings memorized by the MEMO button TIMER button Use this button to change the clock ON timer and OFF timer times forward the time press the TIMER e button To set back the time press the TIMER button AAUTOA xs 0 xx 62 Me AMG Bg ON OFF 69 FILE NO SVM 02007 8 7 2 Names and functions of indications on remote control Display All indications except for clock time indication are indicated by pressing the START STOP button Transmission mark This transmission mark A indicates when the remote control transmits signal
47. Perform the work on a corrugated cardboard cloth etc to prevent scratches to the product 2 Remove the front cabinet and place it down so that the fan guard side faces downwards Remove the hooking claws by pushing a minus screwdriver according to the arrow mark in the right figure and remove the fan guard 2 Attachment Insert the claws of the fan guard in the hole of the front cabinet Push the hooking claws 12 positions by your hand and fix the claws FILE NO SVM 02007 Remarks ax Minus screwdriver 4 Hooking claw p Requirement This completes all the attaching work Check that all the hooking claws are fixed to the specified positions 71 Replacement of temperature sensor for servicing only Common service parts of sensor TO TS TE TD These are parts for servicing sensors Please check that the accesso ries shown in the right table are packed Procedures 1 Cut the sensor 100 mm longer than old one 2 Cut the protective tube after pulling out it 200 mm 3 Move the protective tube toward the thermal sensor side and tear the tip of lead wire in two then strip the covering part Pass the stripped part through the ther mal constringent tube Cut the old sensor 100 mm length on the connector side and recycle that connector Tear the lead wire in two on the connector side and strip and covering part Twist the l
48. Piping materials f or brazing and used brazing filler flux Piping Used brazing Used material filler flux Copper Copper Phosphor copper Do not use Copper Iron Silver Paste flux Iron Iron Silver Vapor flux CD Do not enter flux into the refrigeration cycle 2 When chlorine contained in the flux remains within the pipe the lubricating oil deteriorates Therefore use a flux which does not contain chloring 3 When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water 4 Remove the flux after brazing FILE NO SVM 02007 2 5 3 Brazing As brazing work requires sophisticated techniques experiences based upon a theoretical knowledge it must be performed by a person qualified In order to prevent the oxide film from occurring in the pipe interior during brazing it is effective to proceed with brazing while letting dry Nitrogen gas flow Never use gas other than Nitr ogen gas 1 Brazing method to prevent oxidation D Attach a reducing valve and a flow meter to the Nitrogen gas cylinder 2 Use a copper pipe to direct the piping material and attach a flow meter to the cylinder 8 Apply a seal into the clearance between the piping material and inserted copper pipe for Nitrogen in order to prevent backflow of the Nitrogen gas 4 When the Nitrogen gas is flowing be sure to keep the piping end open 5
49. RN F or 2451EC66 Power cord 1 5 mm or more How to Set the Auto Restart Press and hold down the TEMPORARY button for about 3 seconds M CAUTION After 3 seconds the electronic beeper makes three short beeps to tell you the Auto Restart has been selected e Wrong wiring connection may cause some electrical parts burn out To cancel the Auto Restart follow the steps described in the section Be sure to comply with local codes on running the wire from Auto Restart Function of the Owner s Manual outdoor unit to indoor unit Size of wire and wiring method etc Every wire must be connected firmly This installation fuse 25A D type amp must be used for the power supply line of this air conditioner If incorrect or incomplete wiring is carried out it will cause an ignition or smoke Prepare the power supply for exclusive use with the air conditioner This product can be connected to the mains Connection to fixed wiring A switch which disconnects all poles and has a contact separation of at least 3 mm must be incorporated in the fixed wiring NOTE Connecting cable Wire type More than HO7RN F or 245IEC66 1 0 mm or more Installation fuse rating 43 FILE NO 5 02007 10 HOW TO DIAGNOSE THE TROUBLE The pulse modulating circuits are mounted to both indoor and outdoor units Therefore diagnose troubles according to the diagnosis procedure as described
50. SVM 02007 Part 9 Code Parts name Q ty Refrigerant piping Each Liquid side 26 35 mm Gas side 129 52 mm Pipe insulating material 1 polyethylene foam 6 mm thick Each Putty PVC tapes ne Use 28 mm 210 mm anchor bolts and e f it is necessary to drain the de drain nipple to the bottom plate before installing it A B C D 275 500 60 97 310 600 76 115 RAS 10UAV E RAS 13UAV E g Fixing bolt arrangement of outdoor unit e Secure the outdoor unit with the fixing bolts and nuts if the unit is likely to be exposed to a strong wind nuts rost water attach of the outdoor unit B Suction side Drain hole 1 Diffuser Fig 9 1 2 9 1 3 Accessory and Installation Parts Part No Part name Q ty Part No Part name Q ty Part No Part name Q ty Remote control holder 1 gt Mounting screw 24 x 25 x 6 Wireless remote control x 1 Zeolite filter x 1 Qu Flat head wood screw 23 1 x 160 x 2 Battery x 2 fi Purifying filter x 1 Drain nipple x 1 Others Name Owner s manual Option Installation manual 9 1 4 Installation Servicing Tools New tools for R 410A This model is not equipped with an extension drain hose For the extension
51. able below shows the tools exclusive for R 410A and their interchangeability Tools exclusive for R 410A The following tools for R 410A are required Tools whose specifications are changed for R 410A and their interchangeability Conventional air conditioner installation R 410A air conditioner installation Whether conventional equipment can be used Existence of new equipment for R 410A Whether new equipment can be used with conventional refrigerant Used tool Flare tool Pipe flaring Copper pipe gauge for adjusting projection margin Flaring by conventional flare tool Connection of flare nut Torque wrench For 212 70 Evacuating refrigerant charge run check etc Gauge manifold Charge hose Vacuum pump adapter Vacuum evacuating Electronic balance for refrigerant charging Refrigerant charge Refrigerant cylinder Refrigerant charge Leakage detector Gas leakage check Charging cylinder Refrigerant charge Note 1 When flaring is carried out for R 410A using the conventional flare tools adjustment of projection margin is necessary For this adjustment a copper pipe gauge etc are necessary Note 2 Charging cylinder for R 410A is being currently developed General tools Conventional tools can be used In addition to the above exclusive tools the following equipm
52. apter for 6 Open fully the valve pipe counter flow prevention stem of the packed valves both side of Gas and Liquid 7 Remove the charging hose from the service port For R 410A only i Packed valve at liquid side Packed valve at gas side Service port 8 Securely tighten the Valve core Setting pin caps on the packed valves Fig 9 3 7 42 FILE NO SVM 02007 3 5 Leak CAUTION 9 3 5 Gas Leak Test KEEP IMPORTANT 4 POINTS FOR PIPING WORK Check places for 1 Take away dust and moisture Inside of the connecting pipes 8 2 Tight connection between pipes and unit 3 Evacuate the air in the connecting pipes using VACUUM PUMP 4 Check gas leak connected points i i T acked Valve Handling Precautions Open the valve stem all the way out but do not try to open it beyond i the stopper e Securely tighten the valve stem cap with torque in the following table Electric parts cover Gas side 33 to 42 N m Hexagonal wrench 99 52 3 3 to 4 2 kgf m is required Liquid side 141018 P 26 35 mm 1 4 to 1 8 kgf m ST 1410 18 i 1 4 to 1 8 kgf m Valve cover WwW 4 NS a Check places for outdoor unit 0 Fig 9 3 10 Fig 9 3 8 Check the flare nut connections for the gas leak with a gas leak detector or soap water Service port 9 3 4 Wiring Connection 1 Remove
53. at even when refrigerant leaks its concentration does not exceed the marginal level If the refrigerant gas leakage occurs and its concentration exceeds the marginal level an oxygen starvation accident may result Be sure to carry out installation or removal according to the installation manual Improper installation may cause refrigeration trouble water leakage electric shock fire etc 8 Unauthorized modifications to the air conditioner may be dangerous If a breakdown occurs please call a qualified air conditioner technician or electrician Improper repair s may result in water leakage electric shock and fire etc 2 2 Refrigerant Piping Installation 2 2 1 Piping materials and joints used For the refrigerant piping installation copper pipes and joints are mainly used Copper pipes and joints suit able for the refrigerant must be chosen and installed Furthermore it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants 1 Copper Pipes It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 40 mg 10 m Do not use copper pipes having a collapsed deformed or discolored portion especially on the interior surface Otherwise the expansion valve or capillary tube may become blocked with contaminants As an air conditioner using R 410A incurs pres sure highe
54. cuit is mounted to the indoor unit The inverter to control compressor are mounted to the outdoor unit The entire air condi tioner is mainly controlled by the indoor unit controller The indoor unit controller drives the indoor fan motor based upon command sent from the remote controller 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 4 way valves Besides detecting revolution position of the compressor motor the outdoor unit controller controls speed of the compressor 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 Judgement of suction air temperature of the indoor heat exchanger by using the indoor temp sensor TA sensor Temperature setting of the indoor heat exchanger by using hea
55. cuited 01 The heat exchanger sensor and the P C board are defective Refer to Table 10 4 1 The main board is defective The indoor fan motor is defective Protected operation of P C board The connection or the motor connector is loose The PC board is defective 10 8 2 board layout 867 FILE NO 5 02007 MCC 867 03 SOLDER SIDE TOSHIBA T e EE e 01 T3 15A 250 vt Sw 4 6 3 1 4 I 2 a 24 x 8 5 m r1 AQ 2 m o s 4 2 8 2 te 64127 A Ds 28 8 8 5 8 ad asus 8 SE 23 25 i 1935 2 4 24 sss Bottom View 4 T 47 drm 11 T c54 R37 R35 ROS COE 2 8 E 1 3 z R84 5 8 288 13 5 DIR 2 LUN em a 2 gt 2 L1 72 22 1111111 8 1 For the Top View refer to page 66 1 Sensor characteristic table Resistance value kW 100 Temperature C 60 Discharge temp sensor Room temp sensor Heat exchanger temp sensor Outdoor temp sensor Outdoor heat exchanger temp sensor Suction temp sensor 10 8 3 Indoor unit Other parts Part name Room temp TA sensor Heat exchanger TC sensor FILE NO SVM 02007 Check
56. de air temperature is 5 or lower 3 Defrost operation has been already performed once 2 2 Defrost operation Operation of the compressor is stopped once turn off power coupler for 4 way valves after 10 seconds and then exchange the 4 way valves After 20 seconds restart operation of the compressor Turn off the outdoor fan just when the compressor stopped If temperature of the indoor heat exchanger lowered than 38 C stop the indoor fan Defrost reset Resetting operation from defrost to heating is performed when anyone of the following conditions is satisfied a Temperature of the outdoor heat exchanger rose to 8 or higher b A status that temperature of the outdoor heat exchanger is 5 C or higher continued for 80 seconds c Defrost operation continued for 10 minutes In resetting defrost operation the compressor stops for 50 seconds if defrost has started under condition a to c in item1 but the compressor is reset to heating operation keeping operated if defrost has started under condition d in item 1 5 Louver control When the compressor is turned off by high temperature release control the vertical air flow louvers close once and then return to the position of previous time FILE NO 5 02007 8 2 5 Automatic operation 1 As shown in Fig 8 2 9 the operation mode COOL DRY HEAT is selected according to the outside temperature and room temperat
57. dures 1 Detachment 1 Stop operation of the air conditioner and turn off the main switch and breaker of the air conditioner 2 Remove the valve cover ST1T 4 x 102 1 pc e After removing screw remove the valve cover pulling it downward 3 Remove the wiring cover ST1T 4 x 102 1 pc and then remove the power cord connecting cable and cord clamp ST1T 4 x 102 4 pcs 4 Remove the upper cabinet 5 1 4 x 100 4 pcs e After removing screws remove the upper cabinet pulling it upward 2 Attachment 1 Attach the upper cabinet ST1T 4 x 102 4 pcs e Hook the rear side of the upper cabinet to the claw of the rear cabinet and then place it on the front cabinet 2 After connecting the power cord and connecting cable attach the cord clamp and wiring cover e Insert the upper part into the upper cabinet and insert the claw which has been hooked to the lower part into the square hole and then fix it with screw ST1T 4 x 102 1 pc 3 Attach the valve cover ST1T 4 x 102 1 pc e Insert the upper part to the upper cabinet set the hook claw of the valve cover to square holes at three positions of the main unit and attach it pushing upward 1 Detachment 1 Perform work of item 1 of 2 Remove upper screw ST1T 4 x 102 1 pc of the front cabinet and lower screws ST1T 4 x 102 pcs of the front cabinet The left side of the front is for inserting to the rear cabinet so remove it pullin
58. 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 90 01 gt 02 14 227 Check the unit with all 35 check codes 00 to 22 as shown in Table 10 4 1 e Press TIMER Y button to change the check code backwards If there is a fault the indoor unit will beep for 10 seconds Note the check code on the display of the remote control e 2 digits alphanumeric will be indicated on the display e 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 7 is indicated on the display of the remote control Press START STOP button to release the service mode e The display of the remote control returns to as it was before service mode was engaged FILE NO 5 02007 10 4 2 Caution at servicing 1 2 After servicing push the START STOP button to return to the normal mode 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 i
59. e A To 20 4 Fig 8 2 9 19 5 18 6 17 7 8 3 e Temporary Auto operation existence of Auto Restart and Temporary Cooling operation can be set by the TEMPORARY button of the indoor controller FILE NO SVM 02007 TEMPORARY button Table 8 3 1 TEMPORARY button Control gt Temporary Auto operation start After pushing button for 3 seconds Auto Restart control select After pushing button for 10 seconds 8 3 1 Temporary auto operation When the TEMPORARY button is pushed the Auto operation with set temperature fixed at 25 C starts Controlling is same as that of Auto operation by the remote controller e When the TEMPORARY 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 Temporary Cooling operation start 8 3 2 Temporary cooling operation When the TEMPORARY operation button keeps pushed for 10 seconds Cooling operation of which compressor motor speed and the indoor fan speed are fixed starts Compressor motor speed 10 28 rps Indoor fan speed Low e When the TEMPORARY operation button is pushed again the operation stops Auto Restart function is unavailable 30 FILE NO SVM 02007 8 4 Auto Restart Function 8 4 1 H
60. e the same type of brazing filler 2 5 2 Flux 1 Reason why flux is necessar By removing the oxide film and any foreign matter on the metal surface it assists the flow of brazing filler e In the brazing process it prevents the metal surface from being oxidized By reducing the brazing fillers surface tension the brazing filler adheres better to the treated metal 11 2 3 4 Characteristics required f or flux e Activated temperature of flux coincides with the brazing temperature e Due to a wide effective temperature range flux is hard to carbonize lt is easy to remove slag after brazing e The corrosive action to the treated metal and brazing filler is minimum t excels in coating performance and is harmless to the human bogy As the flux works in a complicated manner as described above it is necessary to select an adequate type of flux according tot he type and shape of treated metal type of brazing filler and brazing method etc Types of flux Non corrosive flux Generally it is a compound of borax and boric acid It is effective in case where the brazing temperature is higher than 800 C Activated flux Most of fluxes generally used for silver brazing are this type It features an increased oxide film removing capability due to the addition of compounds such as potassium fluoride potassium chloride and sodium fluoride to the borax boric acid compound
61. eads on the connector and sensor sides and solder them Move the thermal constringent tubes toward the soldered parts and heat them with the dryer and constring them Wind the attached color tape round the both terminals of the protective tube when colored protective tube is used 10 Fix the sensor again NOTES 1 Store the joint part of the sensor and the connector in the electric parts box 2 Never joint them near the thermal sensor part Otherwise it would cause insulation inferiority because of dew drops When replacing the sensor using the colored protective tube wind the color tape matching the color of that tube FILE NO SVM 02007 Remarks Cutting here Thermal 100 sensor part Connector Cutting here Thermal constringent tube Cutting here 100 gt Winding the color tape Part name Remarks Sensor Length 3m Sensor Spring A For spare Sensor Spring B For spare Thermal constringent tube Including one spare Color tape 9 colors Terminal 72 FILE NO SVM 02007 lt P C board layout gt MCC 866 TO 7 CN300 4 CN602 CN60 TD 5 2 Re08 E R607 C604 C602 CN600 TE 1 NEUTRAL REACTOR CN500 CASE THERMO F01 15A 250V
62. eceiver Check the transformer and the power supply circuit of the rated voltage Check the voltage at the white lead of the louver motor DC12V Check the transformer and the power supply circuit of the rated voltage OPERATION INDICATOR Check the voltage at the No 1 pin on CN10 connector Check the DB01 05 and DC325V DC310 340V Refer to the service data for the detailed failure diagnosis 15 FILE NO SVM 02007 4 2 Outdoor Unit COIL FOR 4 WAY VALVE THERMOSTAT FOR COMPRESSOR REACTOR iY2 12 POWER Neon SUPPLY Er qb F01 id VARISTOR FUSE S 15 INI 55 BLK TAAN 000 12 23 02 PUR 000 Ic F04 m SWITCHING DB0 TRANSFORMER 1 IGBT MODULE COMPRESSOR COLOR IDENTIFICATION BLK BLACK BLU BLUE RED GRY GRAY PNK PINK GRN GREEN WHI WHITE BRW BROWN ORN ORANGE YEL YELLOW PUR PURPLE 16 FILE NO SVM 02007 5 SPECIFICATION OF ELECTRICAL PARTS 5 1 Indoor Unit Parts name Fan motor for indoor ICF 340 30 2 Specifications DC 340V 30W Thermo sensor TA sensor 10k at 25 C DC DC transformer T01 SWT 70 DC 390V Secondary DC 15V 12V 7V Microcomputer Heat exchanger temp sensor TC sensor 10k at 25 C Line filter 101 5511 06270 27mH
63. ed 32rps 3 41 41 41 The values marked with 1 are calculated and controlled by the difference in motor speed between 32 rps and 22 rps 26 8 2 3 DRY operation MODE button on the remote control is set the Dry 0 operation 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 START STOP button Dry operation signal is transmitted to outdoor unit e The Cooling operation giving priority to dehumidifying which restrains the indoor fan speed and compres sor motor speed is performed The indoor fan motor operates as shown in Fig 8 2 5 Fan speed is AUTO only e The outdoor unit controls the outdoor fan relay RO1 R02 and and the compressor motor speed according to the operation command signal sent from the indoor unit 2 5 2 0 L 2 9 1 5 E H E 1 0 SUL 5 0 5 Set 0 temp 0 5 NOTE 1 Middle motor speed between L SUL SUL Super ultra Low Fig 8 2 5 Setting of air flow FILE NO SVM 02007 8 2 4 Heat operation MODE button on the remote control is set the Heat operation Transferring of heat operation signal from indoor unit to outdoor unit starts The indoor fan motor operates by the room tempera ture when selecting AUTO of as shown in Fig 8 2 6 and operates with a set air flow when selecting
64. ents which serve also for R 22 are necessary as the general tools 1 Vacuum pump Use vacuum pump by attaching vacuum pump adapter 2 Torque wrench For 26 35 3 Pipe cutter 9 Hole core drill 265 10 Hexagon wrench Opposite side 5 mm 11 Tape measure 12 Metal saw 4 Reamer 5 Pipe bender 6 Level vial 7 Screwdriver 8 Spanner of Monkey wrench Also prepare the following equipments for other installation method and run check 1 Clamp meter 3 Insulation resistance tester 2 Thermometer 4 Electroscope 9 2 4 Recharging of Refrigerant FILE NO SVM 02007 When it is necessary to recharge refrigerant charge the specified amount of new refrigerant according to the following steps Recover the refrigerant and check no refrigerant remains in the equipment Connect the charge hose to packed valve service port at the outdoor unit s gas side Connect the charge hose of the vacuum pump adapter Open fully both packed valves at liquid and gas sides Place the handle of the gauge manifold Low in the fully opened position and turn on the vacuum pump s power switch Then evacuating the refrigerant in the cycle 4 When the compound gauge s pointer has indi cated 0 1 Mpa 76 cmHg place the handle Low in the fully closed position and turn off the vacuum pump s power switch Keep the status as it is for 1 to 2 minutes and ensure that the compound ga
65. era ture amp 1 button and also any change in room temperature When compressor has been activated or reacti vated it operates with Max 33 rps for 2 minutes with Max 57 rps from 2 minutes to 3 minutes and with Max 64 rps after 3 minutes passed When room temperature is lower than set temperature indoor fan motor is operated at fan speed L as shown in Fig 8 2 1 while the outdoor unit stops Prevent freezing control If temperature of indoor heat exchanger detected by the indoor heat exchanger sensor is 5 C lower compressor motor speed is gradually lower to prevent freezing of the indoor heat exchanger If temperature is 7 or higher return the operation to the above item 1 3 Current release control Current value A 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 7 1A if current value exceeds 7 14 When the current value lowers to 6 6A return the operation to the above item 1 Comp motor 74 speed down Comp motor speed keep Normal control Fig 8 2 3 4 Outdoor temperature release control The outdoor temperature release is controlled by changing the current release points 7 1 and 6 6 in the above item according to temperature detected by the outdoor tempera
66. fan motor is side of removing motor side of transfer transfer switch switch defective Replace motor 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 50 FILE NO 5 02007 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 Is wired connectly to white and black lead wires of terminal block YES To item of Power supply is not turned on 51 FILE NO 5 02007 3 Only indoor fan motor does not operate lt Primary 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 principle 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 8 and 3 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
67. frigerant does not leak When using lubricating oils in the piping processing use such lubricating oils whose water content has been removed When stored be sure to seal the container with an airtight cap or any other cover 1 Flare Processing Procedures and Precautions a Cutting the Pipe By means of a pipe cutter slowly cut the pipe so that it is not deformed b Removing Burrs and Chips If the flared section has chips or burrs refrigerant leakage may occur Carefully remove all burrs and clean the cut surface before installation c Insertion of Flare Nut d Flare Processing Make certain that a clamp bar and copper pipe have been cleaned By means of the clamp bar perform the flare processing correctly Use either a flare tool for R 410A or conven tional flare tool Flare processing dimensions differ according to the type of flare tool When using a conven tional flare tool be sure to secure dimension A by using a gauge for size adjustment Fig 2 2 1 Flare ocessing dimensions Nominal diameter Outer diameter mm Thickness mm FILE NO SVM 02007 Table 2 2 3 Dimensions related to flare pr ocessing for R 410A A mm Flare tool for R 410A clutch type Conventional flare tool Clutch type 1 0 to 1 5 Wing nut type 1 5 to 2 0 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 2 0 to 2 5 Nominal diameter
68. frigerant from the refrigerant cylinder to the equipment charge it turning the cylinder upside down if cylinder is not equipped with siphon Cylinder with siphon Gauge manifold OUTDOOR unit Refrigerant cylinder Electronic balance R 410A refrigerant is HFC mixed refrigerant Therefore if it is charged with gas the composition of the charged refrigerant changes and the characteristics of the equipment varies Cylinder without siphon Gauge manifold OUTDOOR unit Refrigerant cylinder Fig 2 4 2 2 5 Brazing of Pipes 2 5 1 Materials f or brazing 1 Silver brazing filler Silver brazing filler is an alloy mainly composed of silver and copper It is used to join iron copper or copper alloy and is relatively expensive though it excels in solderability 2 Phosphor bronze brazing filler Phosphor bronze brazing filler is generally used to join copper or copper alloy 3 Low temperature brazing filler Low temperature brazing filler is generally called solder and is an alloy of tin and lead Since it is weak in adhesive strength do not use it for refrigerant pipes D Phosphor bronze brazing filler tends to react with sulfur and produce a fragile compound water solution which may cause a gas leakage Therefore use any other type of brazing filler at a hot spring resort etc and coat the surface with a paint 2 When performing brazing again at time of servicing us
69. g upward 2 Attachment 1 Insert the claw at the left side of the front into the rear cabinet 2 Attach the removed screws to the original positions 67 FILE NO SVM 02007 Remarks Upper cabinet OO e Wiring cover 2 E 7 2 TOSHIBA ia An W 19 7 Valve cover Upper cabinet gt SS me 7 Part name Inverter assembly Procedures 1 Perform work of item 1 of D 2 Remove screw ST1T 4 x 102 1 pc of the upper part of the front cabinet e f removing the inverter cover in this condition the P C board can be checked e fthere is no space in the upper part of the upper cabinet perform work of 2 Be careful when checking the inverter because high voltage circuit is incorporated in it 3 Perform discharging by connecting the polarities by discharging resistance approx 100040W or plug of soldering iron to O terminals of the C13 printed CAUTION HIGH is attached electrolytic capacitor 500 uF 330 WV the P C board Be careful to discharge the capacitor because the electrolytic capacitor cannot naturally discharge and voltage remains depending on the malfunction state in some cases NOTE This capacitor has mass capacity Therefore it is dangerous that a large spark generates if short circuiting between the polarities with screwdriver etc for discharging
70. g the following precautions into consideration 1 Never use refrigerant other than R 410A in an air conditioner which is designed to operate with R 410A If other refrigerant than R 410A is mixed pressure in the refrigeration cycle becomes abnormally high and it may cause personal injury etc by a rupture Confirm the used refrigerant name and use tools and materials exclusive for the refrigerant R 410A The refrigerant name R 410A is indicated on the visible place of the outdoor unit of the air condi tioner using R 410A as refrigerant To prevent mischarging the diameter of the service port differs from that of R 22 If a refrigeration gas leakage occurs during installation servicing be sure to ventilate fully If the refrigerant gas comes into contact with fire a poisonous gas may occur When installing or removing an air conditioner do not allow air or moisture to remain in the refrigeration cycle Otherwise pressure in the refrigeration cycle may become abnormally high so that a rupture of personal injury may be caused 5 After completion of installation work check to make sure that there is no refrigeration gas leakage If the refrigerant gas leaks into the room coming into contact with fire in the fan driven heater space heater etc a poisonous gas may occur 6 When an air conditioning system charged with a large volume of refrigerant is installed in a small room it is necessary to exercise care so th
71. haracteristic Curve lt Heating gt lt Cooling gt T T T T T 1 1 1 1 1 1 i 1 i 1 1 1 1 1 m 1 o 5 1 i 1 orc 27 Be i VES reais Se i e 801179 4 250 25 1 o gt 085588 e SOIN REDDE i 1 1 1 i 1 1 1 i EET ORS DE S 1 1 1 1 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 1 1 1 N v 7 7 7 I 7 1 1 i 1 1 i 1 1 1 1 5 1 1 i t 5 l d 1 1 1 i m Era m ss 1 S9 e 15 4 l l 1 1 i cc jot a Be 1 58025 eae i Y M EIS ehe po ga 2 7 20 oOoogc o 9853 89 i i 1 e SOTIN DES aep S ety po eqs 1 i 1 i 1 1 1 i i i 1 et Casas tasu uer ee EEUU 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 i 1 i 1 1 1 1 1 N 60 80 100 40 Compressor speed rps 60 80 100 40 Compressor speed rps 1 3 Capacity Variation Ratio According to Temperature lt Heating gt lt Cooling gt
72. hers been sent when operation continues trouble is of approx 10 to 40 minutes Code including started but it is not sent detected on is not displayed during operation compres from halfway Return serial Supply gas Check also gas leak sor 1 Compressor thermo signal and 2 Unit operates normally during operation Gas shortage normal status check If Return serial signal does Gas leak when signal is not stop between and of the 2 Instantaneous power reset indoor terminal block replace failure inverter P C board If signal stops between 2 and of the indoor terminal block replace indoor P C board Compressor does not rotate All off Displayed when 1 Trouble on compressor Current protective circuit error is detected 2 Trouble on wiring of compressor does not operate when Missed phase r3 specified time passed after 1121 activated Discharge temp exceeded All off Displayed when 1 Check discharge temp sensor TD 117 error is detected 2 Degassing 3 Trouble on Break down of compressor All off Displayed when 1 Check power voltage 220 240 V error is detected 10 IZ 2 Overload operation of refrigeration L cycle Check installation condition Short circuit of outdoor diffuser Four way valve inverse error Operation 1 Check 4 way valve operation TC sensor value lowered continues
73. horizontally in the wall The location of the remote control should be determined as shown CAUTION When installing the installation plate with a mounting screw do not E Side view Top view A 4 use the anchor bolt hole Otherwise the unit may fall down and result s 2m Indoor unit 9 in personal injury and property damage s MZ 287 Sp ee x Reception range Anchor bolt 2 ion Remote oa control Remote control 5 Pd 5 mm dia hole Projection 22 Axial distance 15 mm or less Fig 9 2 1 2231 O Mounting E 2 9 2 2 Cutting a Hole and Mounting Installation Plate 24 25 CHEM A i CI h Cutting a Hole d parts When install the refrigerant pipes from the rear Fig 9 2 4 v gt 4l m 0 0 LE Failure to firmly install the unit may result in personal injury and property damage if the unit falls 80 100 180 4 The center of the pipe hole is above the arrow Incase of block brick concrete or similar type walls make 5 mm dia holes in the wall Insert clip anchors for appropriate 7 mounting screws Install the installation plate using 4 to 6 pieces of mounting screw securing four corners with screws Fig 9 2 2 9 2 3 Electrical Work 1
74. ig 9 3 6 9 3 3 Evacuating After the piping has been connected to the indoor unit you can perform the air purge together at once AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using vacuum pump Do not use the refrigerant in the outdoor unit For details see the manual of the vacuum pump Use a vacuum pump Be sure to use a vacuum pump with counter flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops If inside oil of the vacuum pump enters into the air conditioner which adopts R 410A a trouble of the refrigeration cycle may be caused 1 Connect the charge hose from the manifold valve to the service port of the gas side packed valve 2 Connect the charge hose to the port of the vacuum pump 3 Open fully the low pressure side handle of the gauge manifold valve 4 Operate the vacuum pump to start for evacuating Perform evacuating for about 15 minutes if the piping length is 20 meters 15 minutes for 20 meters assuming a pump Oa capacity of 27 liters per minute gauge Pressure Pressure gauge Then confirm that the compound pressure gauge reading is 101 kPa 76 cmHg 5 Close the low pressure side valve handle of 101kPa 76cmHg Manifold valve Handle Hi Handle Lo Keep full closed Charge hose For R 410A only For R 410A only Vacuum pump gauge manifold Connecting ad
75. ing procedure Disconnect the connector and measure the resistance value with tester Normal temp Temperature Sensor TA TC kQ Remote controller To item of How to judge whether remote controller is good or bad of the Judgement of trouble by symptom Louver motor MP24GA Measure the resistance value of each winding coil by using the tester Under normal temp 25 C Position Resistance value White T Yellow 1104 Yellow 1 1106 Yellow Yellow 1302100 Indoor fan motor 10 8 4 Outdoor unit Part name Compressor Model DA89X1F 20D Since judgement of DC motor is difficult on the single motor refer to 10 5 1 3 Checking procedure Measure the resistance value of each winding by using the tester Resistance value 0 51 to 0 572 0 51 to 0 570 0 51 to 0 579 Under 20 C Red Position Red White White Black Black Red White Black Outdoor fan motor Model UE6 21SS5PA Measure the resistance value of winding by using the tester Resistance value 620 8200 310 4100 310 4100 20 For details refer to Section 10 9 Position Red White White Black Black Red Compressor thermo Bimetal type Model PW 2AL Check conduction by using the tester Outdoor temperature sensor TO outdoor heat e
76. inverter Gas shortage reset P C board Gas leak 2 To display Other block during operation check compressor LUCI thermo operation and supply gas check gas leak also 3 Unit operates normally during Vit check Lit If Return serial signal does not stop between 2 and 3 of the indoor terminal block replace inverter P C board If signal stops between 2 and 3 of the indoor terminal block replace indoor P C board Operation command signal Operation Flashes when If Return serial signal does not stop is not sent to outdoor side continues trouble is between 2 and 3 of the indoor detected on terminal block replace inverter P C Viu Operation board If signal stops between 2 and LI command signal 3 of the indoor terminal block and normal status replace indoor P C board when signal is reset 48 FILE NO SVM 02007 Block distinction Operation of diagnosis function i iti ment an ion poss Block 2 Cause of operation Air S Remark Outdoor TE Inverter over current All off Displayed when Even if trying operation again all P C board L4 protective circuit operates error is detected operations stop immediately Short time Replace P C board Position detect circuit error All off Displayed when 1 Even if connecting lead wire of or short circuit between error is detected compres sor is removed position
77. ipes 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 NS When bending a pipe carefully do it not to crush it p FILE NO 5 02007 9 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 1 Installation plate 9 Press unhook Hook E n Fig 9 2 14 For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing its bottom up at the specified parts 5 Push Fig 9 2 15 9 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 Wi CE 01 Do not put the
78. is prompted Check Check operation within 2 compressor minutes 20 seconds after winding activation stopped resistance Replace control Replace board compressor 10 8 How to Check Simply the Main Parts 2 Inspection procedures 1 When board is judged to be defective 10 8 1 How to check the P C board Indoor unit check for disconnection burning or discolora 1 Operating precautions tion of the copper foil pattern or this P C board 1 When removing the front panel or the P C 2 The board consists of the following 2 parts board be sure to shut off the power supply a Main P C board part breaker DC power supply circuit BV 12V Indoor fan 2 When removing the P C board hold the edge motor control circuit CPU and peripheral of the P C board and do not apply force to the circuits buzzer and Driving circuit of top parts bottom louvers 3 When connecting or disconnecting the connec b Indication unit of infrared ray receiving tors on the P C board hold the whole housing Infrared ray receiving circuit LED Do not pull at the lead wire To check defect of the P C board follow the procedure described below 58 3 Check procedures Procedure Turn off the power supply and remove the P C board assembly from electronic parts base Remove the connecting cables from the terminal block Table 10 8 1 Check points Symptom Check whether or not the fuse 01 is blown FIL
79. ise To tighten the flange nut turn counter clockwise 3 Remove the propeller fan 4 Disconnect the connector for the fan motor from the inverter 5 Remove the fixing screws 3 pcs holding the fan motor by hand so that it does not fall 6 Cut the motor lead at the point which is 100 mm apart from the connector toward the fan 7 Use the connector used for the inverter and pinch the lead wires using the closed end splice 1 Perform work of item 1 of CD 1 of 2 3 and 5 2 Extract refrigerant gas 3 Remove the partition board ST1T 4 x 102 3 pcs 4 Remove the sound insulation material 5 Remove the terminal cover of the compressor and disconnect the lead wire of the compressor thermo and the compressor from the terminal 6 Remove the pipe connected to the compressor with a burner e Make sure the flame does not touch the 4 way valve 7 Remove the fixing screw of the base plate and heat exchanger ST1T 4 x 102 1 pc 8 Pull upward the refrigeration cycle 9 Remove the nut fixing the compressor to the base plate 1 Perform work of item 1 of D 1 of 2 and 3 2 Remove the screw fixing the reactor 5 1 4 x 100 4 pcs 70 FILE NO SVM 02007 Remarks Fan motor Propeller fan Closed end Flange nut Reactor Part name Fan guard Procedures 1 Detachment 1 Perform work of item 1 of 1 of 2 Requirement
80. ith 1 are calculated and controlled by the difference in motor speed between M and L Fig 8 2 1 Setting of air flow FAN AUTO 2 Hi POWER operation cannot be set 8 2 2 Cooling operation MODE button on the remote control is set to the Cool operation 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 START STOP button A cooling operation signal is transmitted to outdoor unit FILE NO SVM 02007 The outdoor unit controls the outdoor fan relay 2 and the compressor motor speed according to the operation command signal sent from the indoor unit When FAN button is set to AUTO the indoor fan motor operates as shown in Fig 8 2 2 When FAN button is set to LOW Z LOW som MED m MED HIGH _ the motor oper ates with a constant air flow pm 40 5 Room temp Preset temp Preset 0 temp NOTE ME 1 2 25 The values marked with 71 are calculated and controlled by the difference in motor speed between M and L Fig 8 2 2 Setting of air flow FAN AUTO Cooling capacity control e The cooling capacity and room temperature are controller by changing the compressor motor speed according to both the difference between the temperature detected by the room tempera ture sensor and the temperature set by temp
81. ith 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 26 35 40 mm 09 52 To connect the pipe after installation of the unit figure To the forefront of flare co 270 mm Liquid side Gas side Outward form of indoor unit zem oe R30 less 06 35 R40 or less 09 52 Use polisin N polyethylene core or the like for bending pipe Use the handle of screwdriver etc Fig 9 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 tape around them N 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 Connecting cable Installation plate Fig 9 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 p
82. mark is flashing S Press another button to turn off the mark display Indicates when the ECO is in operation Each time you press the ECO button the display changes in the sequence of 1 3 5 or 9h 35 FILE NO SVM 02007 9 INSTALLATION PROCEDURE 9 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 HO7RN F or cord designation 2451 66 1 5 mm or more CAUTION New Refrigerant Air Conditioner Installation THIS AIR CONDTIONER ADOPTS THE NEW 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 refrigerating 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
83. n terminals of the C12 CAUTION HIGH VOLTAGE is indicated electrolytic capacitor 5004 400 on P C board and then perform discharging Inverter cover Plug of soldering PC board Soldered surface 10 1 First Confirmation 10 1 1 Confirmation of power supply Confirm that the power breaker operates ON normally 10 1 2 Confirmation of power voltage Confirm that power voltage is AC 220 240 V 10 If power voltage is not in this range the unit may not operate normally 44 FILE NO 5 02007 10 1 3 Operation which is not a trouble Program operation For controlling the air conditioner the program operations are built in the microcomputer as described in the following table If a claim is made for running operation check whether 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 control ling and maintaining of air conditioner Table 10 1 1 Operation of air conditioner Descriptions When power breaker is turned ON the operation lamp Green of the indoor unit flashes The OEPRATION lamp of the indoor unit flashes when power source is turned on If START STOP 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 o
84. n the fixed memory Table 10 4 1 Block distinction Operation of diagnosis function 5 2 Block 2 Cause of operation ns Remark Indoor Short circuit or disconnec Operation Displayed when 1 Check the room temp sensor P C board tion of the room temperature continues error is detected 2 When the room temp sensor is sensor TA sensor normal check board Being out of place Operation Displayed when 1 Check heat exchanger sensor Z disconnection short circuit continues error is detected 2 When heat exchanger sensor is S _ lor migration of heat normal check P C board LL exchanger sensor TC sensor Lock of indoor fan or trouble All off Displayed when 1 Check board on the indoor fan circuit error is detected 2 When PC board is normal check the motor Not Trouble on other indoor Operation Displayed when Replace P C board displayed I P C boards continues error is detected Connect Return serial signal is not Operation Flashes when 1 When the outdoor unit never ing cable sent to indoor side from continues trouble is operate and serial operation started detected on 1 Check connecting cable and signal 1 Defective wiring of Return serial correct if defective wiring connecting cable signal and 2 Check 25 fuse of inverter 2 Operation of compressor normal status P C board thermo when signal is 3 Check 3 15A of
85. n wrench is used for nominal diameters 1 4 and 3 8 Flare tool clutch type been improved By increasing the clamp bar s receiving hole strength of spring in the tool has 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 38 FILE NO SVM 02007 9 2 INDOOR UNIT 9 2 1 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 Anchor bolt holes 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 ou
86. ng the part indicated by an arrow Rear cabinet Note 2 Hold the housing resin part with stopper and pull out to remove 2 Remove the screws fixing the control board assembly and inverter box 3 Remove the control board assembly from the inverter box Note 3 Remove the claw of the board support fixed to the inverter board and remove upwards holding the heat sink 4 Remove the three screws fixing the heat sink and control board assembly 5 Attach the new control board assembly Note 4 When attaching the new control board assembly insert the P C board into the guide rail groove correctly 1 Perform work of item 1 of CD 1 of 2 and 5 of 3 2 Remove the fixed screws fixing to the base plate 5 1 4 x 102 3 pcs 3 Remove the fixed screws fixing the heat exchanger 5 1 4 x 10 2 pcs 4 Remove the upper surface of the motor base and the rear cabinet e Insert a minus driver into the tip of the hooking claw of the rear cabinet to remove 69 board support Remove Z Inverter box Guide rail P C board Minus screwdriver L Claw for hooking 9 gt Part name Fan motor Compressor Reactor Procedures 1 Perform work of item 1 of and 1 of 2 Remove the flange nut fixing the fan motor and the propeller fan e Flange nut is loosened by turning clockw
87. o operate The lamp changes from orange to green If the unit is not required to operate at this time push TEMPORARY button once more or use the remote control to turn it off Motions The unit is in operation Y The unit stops operating The orange lamp is on 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 TEMPORARY button once more or use the remote control to turn it on e While this function is being set if the unit is in operation the orange lamp is on 8 4 3 Power failure during timer operation When the unit is in Timer operation if it is turned off because of power failure the timer operation is cancelled Therefore set the timer operation again 32 8 5 Hi POWER Mode POWER button on the remote control is pressed When Hi POWER button is pressed while the indoor unit is in Auto Cooling or Heating operation Hi POWER mark is indicated on the display of the remote control and the unit operates as follows 1 Automatic operation e The indoor unit operates in according to the current operation 2 Cooling operation e The preset temperature drops 1 C The value of the preset temperature on the remote control does not change e f the difference between the preset temperature and the room temperature is big the horizontal louver moves to the Hi POWER position automatically
88. om the indoor unit controller Operation mode set on the remote control Compressor revolution command signal defined by indoor temperature and set temperature 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 e Temperature of indoor heat exchanger by indoor heat exchanger sensor Minimum revolution control 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 e 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 judgement are described below e 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 02007 8 1 1 Capacity control The cooling and heating capacity is varied by changing
89. omatically starts to rotate by turning on power supply 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 board is soldered imperfectly or the IC is defective the fan motor may automatically rotate by turning on power supply lt Inspection procedure gt 1 Remove the front panel Remove 4 screws 2 Remove the cover of the fan motor lead wires 3 Check DC voltage with CN10 connector while the fan motor is rotating NOTE e Do not disconnect the connector while the fan motor is rotating e Use a thin test rod Indoor fan starts rotating when power supply is turned on Check output DC voltage of fan motor on board P C board CN10 Measure voltage between 2 GND BLACK V line YELLOW 6 Blue of motor connector Yellow 5 Yellow CN10 while indoor fan motor is rotating 4 White 3 Black 2 1 Red DC 1 0V or more Under DC 1 0 P C board is defective Motor is defective Replace P C board Replace motor 53 FILE NO SVM 02007 5 Troubleshooting for remote control The unit does not beep at all Press START STOP OPERATION lamp on indoor button unit is not indicated Is transmission NO mark indicated YES on remote control with tip of pencil Press RESET button Is receiver on indoor unit exposed to direct sunlight NO
90. or phases 15 not winding between 1 2 2 3 1 3 opened or short circuited Is not frame grounded with or Replace outdoor fan motor Check Measurement 57 If fuse was blown be sure to check the electrolytic capacitor and diode block DBO1 Connect discharge resistance approx 100Q40W or soldering iron plug between terminals of the electro lytic capacitor 500 of C12 with printed CAUTION HIGH VOLT board Discharging position Discharging period 10 seconds or more Plug of soldering iron If 15A fuse is blown discharge both edges of the electrolytic capacitor with soldering iron OK if 500uF DC280 to 320V Remove CN300 by pushing the part an arrow indication because is a connector with lock Resistance between phases should be approx 55 to 770 Should be 10 or more FILE NO SVM 02007 Check winding resistance OK if 10MQ or more between phases gt 0 510 gt of compressor and resistance between outdoor frames by using a tester 5 not grounded e 5 not short circuited between windings Replace Operation e Winding is not opened com pressor 0 570 Check by a digital tester winding of compressor Remove connector CN300 of the outdoor fan motor turn on the power breaker and perform the board assembly operation Stops though activation
91. or improvement control is performed mainly aiming to reduce the current on much power consump tion of cooling heating operation Controlling starts from the time when input power 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 23 8 1 4 Prevent freezing control The indoor heat exchanger sensor detects refrigerant vapor temperature in COOL DRY operation If the temperature is below the specified value compressor motor speed is reduced so that operation is performed in temperature below the specified value to prevent freezing of indoor heat exchanger 8 1 5 Louver control 1 Vertical air flow louvers Positions of vertical air flow louvers are automati cally controlled according to the operation status AUTO COOL zx DRY 0 and FAN ONLY Besides positions of vertical air flow louvers can be arbitrarily set by pressing the FIX button 2 Swing If the SWING button is pressed during running operation vertical air flow louvers start swinging When the FIX button is pressed swinging stops FILE NO SVM 02007 8 1 6 Indoor fan control DC fan motor 1 The indoor fan is operated by the stepless speed change DC motor 2 For air flow level speed of the indoor fan motor is controlled five steps LOW LOW MED ME
92. ouver MP24GA DC 12V WH H1UE 43 44320 Refrigeration Cycle Assy 43T83003 Holder Remote Controller 43 47006 Pipe Delivery 26 35 43T85325 Owner s Manual 43747305 Pipe Suction 28 43 62302 Terminal Cover 43T11301 Pipe Shield 43T60317 Cord Motor Louver 43T19302 Holder Sensor 43T60316 Cord Motor Fan 43749302 Plate of EVA Seal 43T07303 Holder Pipe 43 49006 Holder Plate EVA Seal 43T01003 Mark 43779302 Guide Drain Description 75 12 3 Outdoor Unit Location No 43 19313 43 20306 43 00362 43 43323 43 62309 43 00363 43 47308 43 46011 43 47021 43 46010 43 47020 43 21326 43 47001 I l 21 XEX Description Guard Fan Fan Propeller Cabinet Front Assy Condenser Assy Cover Wiring Assy Cabinet Back Assy Tube Capillary 1 0 1 0 Valve Packed 9 52 Bonnet 9 52 DIA Valve Packed 6 35 Bonnet 6 35 DIA Motor Fan UF6 21SS5PA Nut Flange 76 43 19312 43 49001 43 63005 43 54304 43 41318 43 62305 43 00364 43 63301 43 42302 43 79305 43 46313 43 46314 43 46315 FILE NO 5 02007 11117 JI Description Handle Cushion Rubber Holder Thermostat Thermostat Bimetal PW2AL Compressor DA89XIF 20D Cover Packed Valve Cabinet Uppe
93. ow 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 65 FILE NO SVM 02007 Remarks 2 Screws FILE NO SVM 02007 11 2 Microcomputer Part name Procedures Remarks Common 1 Turn the power supply off to stop the Replace the thermal fuse terminal procedure operation of air conditioner block microcomputer ass y and the 2 Remove the front panel P C board ass y e Remove the 4 fixing screws 94 x 142 3 Remove the Electric parts cover lt P C board layout gt MCC 867 5401 3 3 CN30 5 07 1 4 cN34 401 T3 15A 250V RYO1 1111111111 3 t he 8 2 2 75 ae 9 R95 866 850 029 ON 16032 BZ01 746 5 9 0 1014 c30 U E 2 D I 64 1216 8 MCC 867 03 COMPONENT SIDE TOSHIBA ROG 1 I 4 T 1 t X01 RIN sa oom 4 1 5 o 8 3 53 1 CNIS SWRT 8 u gt r Ro S C24 Top View 66 11 3 Outdoor Unit Part name Common procedure Front cabinet Proce
94. ow to set auto restart function The indoor unit is equipped with an automatic restart To set the auto restart function proceed as follows ing function which allows the unit to restart operating power supply to the unit must be on the function with the set operating conditions in the event of power Will not set if the power is off supply being accidentally shut down The operation will Push the TEMPORARY button located in the center resume without warning three minutes after poweris Of the front panel continuously for three seconds restored This function is not set to work when shipped unit receives the signal and beeps three times from the factory Therefore it is necessary to set it to The unit then restarts operating automatically in the work event of power supply being accidentally shut down When the unit is on standby Not operating Operation Motions Push TEMPORARY button for more The unit is on standby than three seconds 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 TEMPORARY baton If the unit is not required to operate at this time push TEMPORARY button once more or use the remote control to turn it off When the unit is in operation Operation Motions Push TEMPORARY button for more The unit is in operation The green lamp is on than three seconds
95. perate while compressor restart delay timer 3 timer operates The same phenomenon is found after power source has been turned on because 3 minutes timer operates The air flow indication is fixed to AUTO In Dry and ECONO Mode FAN air flow display does not change even though FAN air flow select button is operated Increasing of compressor motor speed stops approx 30 seconds after operation started and then compressor motor speed increases again approx 30 seconds after For smooth operation of the compressor the compressor motor speed is restricted to Max 41 rps for 2 minutes and Max 91 rps for 2 minutes to 3 minutes respectively after the operation has started The set value of the remote controller should be below the room temperature If the set value is above the room temperature Cooling operation is not performed And check whether battery of the remote controller is consumed or not In AUTO mode the operation mode is changed After selecting Cool or Heat mode select an operation mode again if the compressor keeps stop status for 15 minutes In HEAT mode the compressor motor speed does not increase up to the maximum speed or decreases before the temperature arrives The compressor motor speed may decrease by high temp release control Release protective operation by temp up of the indoor heat exchanger or current release control at the set temperature 10 2
96. r Assy Fixing Plate Valve Assy Base Assy Nipple Drain Reactor Valve 4 way Coil 4 way Assy FILE NO 5 02007 12 4 Outdoor Unit E Parts Assy 701 707 Sensor 76 704 706 Location Description oe Description No 1 43 62306 Invertor Cover 437160315 Fuse 15A 250V 43 62307 Heatsink 43 50303 Temperature Sensor 43 69316 P C Board 866 10 25 43 62308 Invertor Box 43T50303 Temperature Sensor 43 60027 Terminal Box 15 250V TO 10KQ 25 C 77 TOSHIBA CARRIER CORPORATION
97. r than when using R 22 it is necessary to choose adequate materials Thicknesses of copper pipes used with R 410A are as shown in Table 2 2 1 Never use copper pipes thinner than 0 8 mm even when it is avail able on the market FILE NO 5 02007 Table 2 2 1 Thicknesses of annealed copper pipes Thickness mm Nominal diameter Outer diameter mm R 410A 2 Joints For copper pipes flare joints or socket joints are used Prior to use be sure to remove all contaminants a Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm In such a case socket joints can be used Sizes of flare pipe ends flare joint ends and flare nuts are as shown in Tables 2 2 3 to 2 2 6 below b Socket Joints Socket joints are such that they are brazed for connections and used mainly for thick pipings whose diameter is larger than 20 mm Thicknesses of socket joints are as shown in Table 2 2 2 Table 2 2 2 Minim um thicknesses of soc ket joints Nominal diameter Reference outer diameter of copper pipe jointed mm mm Minimum joint thickness 2 2 1 Processing of piping materials When performing the refrigerant piping installation care should be taken to ensure that water or dust does not enter the pipe interior that no other oil other than lubricating oils used in the installed air conditioner is used and that re
98. rts with sharp edges Please read this installation manual carefully before installing the unit It contains further important instructions for proper installation 36 9 1 1 Installation Diagram of Indoor and Outdoor Units 65 mm or more Installation plate or f Shield pipe 18 Zeolite filter Purifying filter 8 Flat head wood screw Before installing the wireless 9 remote control d E gt With the remote control cover open load the batteries supplied correctly observing their olarity Wireless remote Remote control holder control Cover 5 Saddle E 5 8 N Extension drain hose Option RB 821SW As shown in the figure hang power cord and connecting cable downward and take out it along piping connection port Fig 9 1 1 37 FILE NO 5 02007 For the rear left and left piping Cir 1 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 Bottom right Bottom left Insulate the refrigerant pipes separately with insulation not together 6 mm thick heat resisting polyethylene foam 9 1 2 Optional Installation Parts FILE NO
99. rvice port View Installation dimension 100 or more EA x 100 or more 600 more 4x 11x14 Long holes for 8 10 anchor bolt Air outlet lt 14 FILE NO SVM 02007 4 WIRING DIAGRAM 4 1 Indoor Unit COLOR IDENTIFICATIONBLU BLK BLACK RED RED WHI WHITE YEL YELLOW BLU BLUE GRN amp YEL GREEN amp YELLOW TERMINAL INDOORloUTDOOR BLOCK UNIT UNIT rT t HH a n WHI y 909 THERMO SENSOR 5 CN13 00 4 o Y LINE 13 FILTER 605 2 gt 454 00 lt lt AD 89 11 tr lt i 2 1010 MAIN BOARD 867 1 068611 Table 4 1 1 Simple Check for Failure Diagnosis Check Item Diagnosis Result Check 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 1 and 2 TERMINAL Refer to the name plate BLOCK Check the primary and secondary voltage of the transformer Check the fluctuating voltage between 2 and 15 60VDC FUSE Check if the fuse blows out 3 15A Check the R04 of the varistor Check the voltage at the No 4 pin CN13 connector of the DC5V infrared r
100. s to the indoor unit Mode display Indicates the current operation mode AUTO Automatic control Auto changeover control Cool Dry Heat Fan only 8 Temperature display Indicates the temperature setting 17 to 30 When you set the operating mode to Fan only no temperature setting is indicated Louver operation display Indicates the louver positioning and operation Five selectable positions 9 0 5 9 9 Automatic 9 Swing 5 FAN speed display Indicates the selected fan speed AUTO or one of five fan speed levels LOW LOW MED MED HIGH can be indicated 6 Indicates AUTO when the operating mode is either AUTO Dry In the illustration alll indications are indicated for explanation 6 and clock time display Dung oceration only the The time set for timer operation or clock time is indicated relevant indications will be The present time is always indicated except for TIMER operation indicated on the remote control Hi POWER display Indicates when the Hi POWER operation starts gt Press the Hi POWER button to start and press it again to stop the operation MEMORY display Flashes for 4 seconds when the MEMO button is pressed during IJ OFF operation p mark is indicated when keeping the button depressed for more AUTO 1 than 4 seconds while the
101. t exchanger sensor TC sensor 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 judgement display of error Role of outdoor unit controller Receiving the operation command signal Serial signal from the indoor controller the outdoor unit performs its role 2 Compressor operation control Operation control of outdoor fan motor 4 way valves Detection of inverter input current and current release operation Over current detection and prevention operation to IGBT 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 operation revolution control Defrost control in heating operation Temperature measurement by outdoor heat exchanger and control for 4 way valves and outdoor fan Operations followed to judgement of serial signal from indoor side 22 3 Contents of operation command signal Serial signal from indoor unit controller to outdoor unit controller The following three types of signals are sent fr
102. tdoor 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 ES CAUTION 2 Direct sunlight to the indoor unit wireless receiver should be 2 Md d ion Hook Installatio plate Pipe hole 2 m or more from floor avoided 2 The microprocessor in the indoor unit should not be too close to Hook Thread r f noise sources Pipe hole For details see the owner s manual Cc Pd Mounting screw Indoor unit Weight Fig 9 2 3 Remote controller 9 A place where there no obstacles such a curtain that may block When the installation plate is directly mounted 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 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
103. tems 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 46 10 4 Self Diagnosis by Remote Control 1 2 Check Code If the lamps are indicated as shown B to H in Table 10 3 1 exchanger the self diagnosis by the remote control When the remote control is set to the service mode the indoor controller diagnoses the opera tion 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 10 4 1 How to use remote control in service mode RESET CLOCK CHECK AAUTOA xx 973 HiPOWER CHK r old 4 PRESET auto Hi H Power O RESET CLOCK CHECK e Alphanumeric characters are used for the check code 5 is 5 is 6 R is A b is B is C d is D 47 FILE NO SVM 02007 Press CHECK button with a tip of pencil to set the remote control to the service mode
104. the electric parts cover from the outdoor unit 2 Connect the connecting cable to the terminal as identified with their To switch the TEST RUN COOL mode press TEMPORARY button for respective matched numbers on the terminal block of indoor and 10 sec outdoor unit 3 When connecting the connecting cable to the outdoor unit terminal The peeperwillmake ashiort beep make a loop as shown installation diagram of indoor and outdoor unit to prevent water coming in the outdoor unit 4 Insulate the unused cords conductors with water coming in the outdoor unit Process them so that they do not touch any electrical or metal parts Stripping length of connecting cable Terminal block L 9 3 6 Test Operation 1237710 10 1011 1 py 10 inm 30 t 40 30 f 0 TEMPORARY button j Fig 9 3 11 i j power Earth line Earth line A Connecting cord Connecting power core 9 3 7 Auto Restart Setting Fig 9 3 9 This product is designed so that after a power failure it can restart automatically in the same operating mode as before the power failure RAS 10UKV E RAS 13UKV E Power source 50 60 2 220 240V Single phase Maximum running current 8A 11 The product was shipped with Auto Restart function in the off position 25A 25A Turn it on as required D type HO7
105. ture sensor For example if the outdoor temperature is 43 the value of current release point becomes 5 0A 6 0 5 0 Preset temp Room temp 1 5 Air flow rate FILE NO SVM 02007 Limit for maximum compressor motor speed by indoor fan speed When the indoor heat exchanger sensor detected 17 C or lower the maximum compressor motor speed is limited by the indoor fan speed For example the compressor motor speed is limited as described in the table below To lt 32 C To 32 C after 1H running 54 54 M 48 49 41 44 M L L L 35 39 L L UL SUL 28 28 6 7 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 ECO operation control When the ECO button of the remote controller is pushed quiet and mild operation is performed by restraining air flow and operating motor speed 1 Indoor air flow is controlled between SUL and L 2 Setting 32 rps as the maximum operating compressor motor speed the minimum capac ity operation range is widened every 1 hour and 4 hours have passed after ECO operation had started Comp motor spe
106. uges pointer does not return Set the refrigerant cylinder to the electronic balance connect the connecting hose to the cylinder and the connecting port of the electronic balance and charge liquid refrigerant For refrigerant charging see the figure below D Never charge refrigerant exceeding the specified amount 2 If the specified amount of refrigerant cannot be charged charge refrigerant bit by bit in COOL mode 8 Do not carry out additional charging When additional charging is carried out if refrigerant leaks the refrigerant composition changes in the refrigeration cycle that is characteristics of the air conditioner changes refrigerant exceeding the specified amount is charged and working pressure in the refrigeration cycle becomes abnormally high pressure and may cause a rupture or personal injury INDOOR unit uz Refrigerant cylinder With siphon pipe Open Close valve for charging Electronic balance for refrigerant charging Liquid side OUTDOOR unit Service port Fig 2 4 1 Configuration of refrigerant charging 10 FILE NO SVM 02007 1 Be sure to make setting so that liquid can be charged 2 When using a cylinder equipped with a siphon liquid can be charged without turning it upside down It is necessary for charging refrigerant under condition of liquid because R 410A is mixed type of refrigerant Accordingly when charging re
107. ure Set tem perature 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 compressor motor The power coupler IC20 for 4 way valves is turned on and turned off in defrost operation 1 Heating capacity control Calculate the difference between temperature detected by room temperature sensor every minute and the set temperature set on Tempera ture indicator and variation amount of room temperature Then obtain the correction amount of the com mand signal and correct the current frequency command signal 2 High temperature release control If temperature of the indoor heat exchanger detected by the indoor heat exchanger sensor is 55 C or higher compressor motor speed is gradually lowered to prevent over temperature rising of compressed pressure If temperature becomes below 48 return to above item 1 3 Current release control The input current of compressor and outdoor fan motor Precisely inverter main circuit control section which occupies most of air conditioner input is detected by the outdoor current sensor The compressor motor speed is lowered gradually according to the range of TO outside air tempera ture if the input current exceeds the current value determined in each zone as shown in Fig 8 2 8 so that the input current does not exceed the set value In case that the current lowered by approx
108. ure 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 operation mode after Fan operation of ultra low fan In AUTO operation the set temperature of each operation can be corrected by the remote control ler in the range of 17 to 30 C 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 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 temperature gains access to the set temperature it becomes cool memory position 29 Preset temp ATs 30 6 29 5 28 4 TA Powerful Cooling with setting on remote 27 3 28 ATs controller Ts 25 C Cooling with 26 2 26 ATs setting on remote controller Ts 25 C 25 1 24 ATS srt stes en Heating with setting ac 23 Monitoring 24 0 E 9 Follow to the Fan control in previous mode when 23 1 being selected again 20 ATS 22 2 Ts correction by outside 2 4 0 41 21 3 temperatur
109. xchanger temperature sensor TE Disconnect the connector and measure resistance value with the tester Normal temperature TGa Heat pump model only TO TE Refer to the TA TC characteristic table in Indoor Refer to Table 10 8 3 No 1 61 FILE NO SVM 02007 10 8 5 Checking method for each part Part name Checking procedure Electrolytic capacitor For Turn OFF the power supply breaker raising pressure smoothing Discharge all four capacitors completely Check that safety valve at the bottom of capacitor is not broken Check that vessel is not swollen or exploded Check that electrolytic liquid does not blow off Check that the tester shows the normal charging characteristics in continuity test Case that product is good Pointer swings once and returns slowly When performing test once again MCC 866 under another polarity the Soldered surface pointer should return Heat sink IGBT side C12 C13 500uF 400V Rectifier 1 Turn OFF the power supply breaker 2 Discharge all four capacitors completely 3 Check that the normal rectification characteristics are show in continuity test by the tester A LA 9 Diode check Tester rod Resistance value o in good product or more 09 in trouble e

AIR-CONDITIONER - Carrier Africa

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