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AIR CONDITIONER - AHI

1. Fig 8 4 10 Firmly insert drains cap Do not apply lubricating oil refrigerant machine oil when lt inserting the drain cap Application causes deterioration and drain leakage of the plug Insert a hexagon wrench 4 mm Fig 8 4 11 Firmly insert the drain hose and drain cap otherwise water may leak lt in case of right or left piping After scribing slits of the front panel with a knife or a making off pin cut them with a pair of nippers or an equivalent tool Fig 8 4 12 In case of bottom right or bottom left piping 26 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 Left hand connection with piping FILE NO SVM 08029 8 4 6 Indoor unit fixing Bend the connecting pipe so that it is laid within 43 mm 1 Pass the pipe through the hole in the wall and hook 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 2 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 To connect the pipe after installation of the unit figure To the forefront of flare E i R 30 mm Use polisin polyethylene J e SN core or the like for bending pipe
2. RESE Fig 8 7 2 FILE NO SVM 08029 8 7 3 Auto restart setting This product is designed so that after a power failure it can restart automatically in the same operating mode as before the power failure The product was shipped with Auto Restart function in the off position Turn it on as required How to set the auto restart e Press and hold the RESET button for about 3 seconds After 3 seconds the electronic beeper makes three short beeps to tell you the Auto Restart has been selected e To cancel the Auto Restart follow the steps described in the section Auto Restart Function of the Owner s Manual 32 FILE NO SVM 08029 9 TROUBLESHOOTING CHART 9 1 Troubleshooting Procedure Follow the details of 9 2 Basic Chec k Items If there is no trouble corresponding to 9 2 check whether or not there are faulty parts following 9 4 Self Diagnosis by Remote Control 9 2 Basic Check Items 9 2 1 Power supply voltage The line voltage must be AC 220 240V If it is not within this range the air conditioner may not operate normally 9 2 2 Incorrect cable connection between Indoor and outdoor units The indoor unit is connected to the outdoor unit with 5 cables Heat pump model or 3 cables Cooling Only model Check that the indoor and outdoor units have been properly connected with terminals assigned the same numbers If the connectors are not properl
3. J C p e 2 242 N 0 25 Drain Outlet 97 267 23 FILE NO SVM 08029 267 280 6 11x14 Hole 280 Dune 97 2 11x14 Hole or 8 10 Anchor Bolt Fan Guard LA gt 1 22 SS SS SS s SN S CSS 11 9 2 R15 36 50 500 NO Detail Drawing Front Leg COVER e So 280 Pitch PV 12 5 302 i Air inlet pen lt gt 100 280 Installation Dimension Liquid Side Flare 6 35 123 78 100 or More Air inlet 500 600 or More Air Outlet T 600or More abs pe J N Z View B5 Gas Side Flare 212 7 Service Port FILE NO SVM 08029 3 WIRING DIAGRAM Infrared rays receiver and indication parts onto 02137475 61778191017
4. 232222522222 Heat Exchanger mmamgagamgmmumms oe TASASE 415161 7 819 1011 BLK CN14 lt di213 4 5 6 7 8 94000 Q 5 _ BEEN N P04 R64 WP 018 4 3 A Heat Exchanger CNO o ob DBO1 l Sensor TC 0 QU DO T V C27 DC 12 E Switching Power Supply Thermo Sensor TA CN03 Louver motor oc 250 VAC Voltage WD I SG01 DC5V Regulator YEL mE DSA GRY y A CUN 15 BRW N E BRW N E N e N POWER CORD BLU N nee iu iN IC03 Z GRN amp YEL Bw x 14 AC Motor POWER SUPPLY L01 gt AV AY WHI From Power Cord n 2 1 4 BLK 19 220 240V 50Hz f e MCU ne H C25 C26 RED e e 3 4 FAN motor SA CNO4 1 2 TEMP FUSE s iu PNK PNK V 5 73 C g INDOOR TERMINAL 4 2 BLOCK 1 1 l 1 l l INDOOR OUTDOOR l l l l l Y OUTDOOR TERMINAL BLOCK CHASSIS BLK CAPACITOR FAN MOTOR f Z NI LN COMPRESSOR OVERLOAD RELAY a 9 NBLK PNK v f FILE NO SVM 08029 4 SPECIFICATION OF ELECTRICAL PARTS 4 1 Indoor Unit Parts name Specifications Fan motor for indoor AFS 220 20 4AR AC Motor with 145 C thermo fuse Thermo sensor TA sensor 10kQ at 25 C Transformer ST 001 Microcontroller unit IC30 TMP87CM40ANG Heat exchanger sensor 10k Qat 25 C TC sensor Line filter L01 SS11V 06270 27mH 600mA Bridge rectifier DBO1 DB105G 1 0A 600 V Capacitor C27 EKMH401VSN470MP20S
5. 1 Remove the air inlet grille Open the air inlet grille upward and pull it toward you 2 Remove the terminal cover and cord clamp 3 Insert the connecting cable according to the local cords into the pipe hole on the wall 4 Take out the connecting cable through the cable slot on the rear panel so that it protrudes about 15 cm from the front 5 Insert the connecting cable fully into the terminal block and secure it tightly with screws Tightening torque 1 2 N m 0 12 kgf m 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 instructions or limitations 25 FILE NO SVM 08029 Cord clamp Terminal cover E Connecting ae cable INKS NUD LN about uie Screw Connecting cable Fig 8 4 5 60 mm Earth line 10 mm lt x gt 10 mm 50 mm Stripping length of the connecting cable Fig 8 4 6 NOTE e Use stranded wire only e Wire type HO7RN F or more How to install the air inlet grille on the indoor unit gt e When attaching the air inlet grille the contrary of the removed operation is performed Fig 8 4 7 8 4 5
6. A saline 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 medical equipment y Fig 8 5 1 28 FILE NO SVM 08029 8 5 2 Refrigerant piping connection Unit N m 1 Cut the pipe with a pipe cutter 3 isi A Tidhit ning torque E gt Obliquity Roughness Warp 26 35 16 to 18 1 6 to 1 8 kgf m amp td Ef Us 29 52 30 to 42 3 0 to 4 2 kgf m 912 70 50 to 62 5 0 to 6 2 kgf m Fig 8 5 2 e Tightening torque of flare pipe connections 2 Insert a flare nut into the pipe and flare the pipe e Projection margin in flaring A Unit mm VE atindooruni side Fig 8 5 3 Flare at outdoor unit side Fig 8 5 4 Outer dia of copper pipe Rigid Imperial 26 35 0 5 to 1 0 1 0 to 1 5 29 52 0 5 to 1 0 1 0 to 1 5 ark line 212 70 0 5 to 1 0 1 5 to 2 0 Q Tightening connection Align the centers of the connecting pipes and tighten Fig 8 5 5 the flare nut as far as possible with your fingers Then tighten the nut with a spanner and torque wrench as shown in the figu re Half union i Flare nut Externally Internally CAUTION threaded side Ip fo threaded side Do not apply excess torque e Otherwise the nut may crack depending on the Use a wrench to secure Use a torque wrench to tighten conditions Fig 8
7. FILE NO SVM 08029 Note 1 Capacity is based on the following temperature conditions Condition JIS C9612 Temperature Cooling 27 Indoor unit inlet air temperture 19 35 C Outdoor unit inlet air temperture 24 Note 2 e Charge refrigerant according to the table below Refrigerant RAS 12SKSX 1 RAS 12SASX 1 No need to charge 10m or less extra refrigerant Need to charge extra refrigerant Over 10m up to 15m 20g m FILE NO SVM 08029 2 CONSTRUCTION VIEWS 2 1 Indoor Unit Front panel Air filter Air inlet 205 a p a N LLL JL 2 C JL 2 wan aun wam Ss CA aS JL 2 I 48 Knock out system Knock out system 116 480 193 Installation plate hanger Y I L IL Installation plate hanger Drain hose 0 50m Connecting pipe 0 35m Connecting pipe 0 40m Flare 12 7mm Flare 6 35mm 84 5 621 84 5 235 215 215 Minimum distance to ceiling 150 160 5 160 Center line Installation plate outline 280 2 2 Outdoor Unit 500 50 c REEF SN 36 R15 26 LK N N R5 5 A Detail Drawing Back Leg
8. Fan motor Propeller fan Flange nut Part name Fan guard Capacitor for compressor Capacitor for fan motor Procedures 1 Detachment 1 Perform work of item 1 of and 1 of Requirement 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 Attachment Insert the claws of the fan guard in the hole of the front cabinet Push the hooking claws 8 positions by your hand and fix the claws Requirement This completes all the attaching work Check that all the hooking claws are fixed to the specified positions Perform the common procedure 1 Remove the fixing screw and the capacitor band 1 Screw 4 x 100 3 Disconnect the lead wires 1 Perform the common procedure 1 2 Remove the fixing screw and the capacitor band 1 Screw 4 x 102 3 Disconnect the lead wires FILE NO SVM 08029 Remarks a Minus screwdriver 44 Hooking claw Capacitor for compressor Capacitor band Screws 24 x 102 for fan motor Screws 24 x 100 FILE NO SVM 08029 11 EXPLODED VIEWS AND PARTS LIST 11 1 Indoor Unit E Parts Assy Location Part Location Part
9. 220 240 Hz 50 Power consumption kW Power factor Running Indoor A 0 15 current Outdoor A Starting current A 23 Moisture removal lit h 2 0 Noise Indoor H M L dB 44 38 33 Outdoor 220 240 V dB Name of refrigerant R22 Refrigerant Rated amount kg 0 70 Refrigerant control Capillary tube Gas side size 012 7 Connection type Flare connection Liquid side size 26 35 Interconnection Connection type Flare connection pipe Maximum length One way 10 15 Maximum height difference 6 INDOOR UNIT RAS 12SKSX 1 Height 275 Dimensions Width 790 Depth 205 Net weight 9 Evaporator type Finned tube Indoor fan type Cross flow fan High fan 590 Air flow volume Medium fan 470 Low fan 410 Fan motor output 20 Air filter Honeycomb woven filter with PP frame OUTDOOR UNIT RAS 12SASX 1 Height 530 Dimensions Width 660 Depth 240 Net weight 27 Condenser type Finned tube Outdoor fan type Propeller fan Air flow volume Fan motor output 30 Model Compressor QK222PCB Output 1100 Safety device Fuse Overload relay Louver type Automatic louver Usable outdoor temperature range 21 43
10. the room temperature is in the range that the compressor is turned on The compressor is not turned on even though The compressor is not turned on in the restart delay timer 3 minutes timer operation It is also not turned on after the power supply is turned on because of this timer operation The operation mode changes in the Automatic operation In Automatic operation the room temperature is detected all time for control fan speed and the operation mode is changed every 15 minutes according to difference between the room temperature and the preset temperature The Fan only operation continues in the Automatic operation When the room temperature is in the range Preset temperature 1 C the Fan only operation is selected 33 9 3 Primary Judgement 9 3 1 Role of indoor unit controller The indoor unit controller receives the operation commands from the remote control and executes them e Temperature measurement at the air outlet of the indoor heat exchanger by the indoor temperature sensor e Temperature setting of the indoor heat exchanger by the heat exchanger sensor Louver motor control Indoor fan motor operation control LED display control Transferring of operation commands to the outdoor unit FILE NO SVM 08029 9 3 2 Failure diagnosis The indoor unit diagnoses the operation condition and indicates the information of the self diagnosis with the lamps on the display panel of
11. 220 240V YES Is cable connection between indoor NO and outdoor units correct YES Is the voltage across the outdoor terminal N NO D 220 240V YES NO Are all the cords for compressor normal YES 15 the compressor motor winding normal NO Check the winding resistor YES NO Is the capacitor for compressor normal YES NO Is the overload relay normal YES NO Does the compressor start YES Compressor starts but it stops after a while YES Is the gas quantity normal NO Check the pressure YES Compressor is defective See Power can not be turned on See Power can not be turned on Relays RY01 Q02 or IC30 is failure FILE NO SVM 08029 Replace the P C board Correct cabling between indoor and outdoor units Cables between indoor and outdoor units are defective Re wire or replace the defective cords Compressor is defective Capacitor is defective Overload relay is defective Compressor is defective Gas shortage Gas leakage 40 9 5 5 Only outdoor fan does not operate Shut off the power supply from AC outlet once and turn it on after 5 seconds NO Does the OPERATION lamp blink YES Does the power turn on by pushing the 5 button of the remote control NO YES Is the voltage across the indoor terminal 1 2 AC 220 240V
12. 47uF 400 V Fuse F01 BET6 3A T6 3A 250VAC Varistor R62 R63 SR561K14DL 560V Louver motor 2473 12VDC Relay Comp RY01 G4A 1A Rating 25A AC250V 4 2 Outdoor Unit Parts name Specifications Output Rated 990 W 2 poles 1 phase 220 240 V 50Hz Compressor QK222PCB Winding resistance C R C S at 25 C 2 67 3 92 Output Rated 30 W 6 poles 1 phase 220 240 V 50Hz Fan motor for outdoor wi F 240 30A Winding resistance Red Black White Black at 20 C 237 380 Running capacitor DS451155NPQB AC 450 V 15uF Running capacitor RS44B356U0125S AC 440 V 35 for compressor Overload relay 9 0A 80 C Open 135 5 Close 75 11 FILE NO SVM 08029 5 REFRIGERATION CYCLE DIAGRAM T1 Heat exchanger 1 Cooling 0 39 m 0 49 Connecting pipe CESS Connecting pipe Cross flow fan 999 W gt V P O D 6 35 mm Packed valve Packed valve 2127 26 35 gt Cooling Compressor QK222PCB Capillary tube 271 7 x 8007 Heat exchanger 2 C gt gt Refrigerant Propeller fan R22 0 70 kg _ Cooling Outdoor unit Mark m means check points of Gas Leak Ambient temp Fan speed conditions DB WB indoor C Indoor Outdoor Standard 0 54 10
13. 5 6 CAUTION e KEEP IMPORTANT 4 POINTS FOR PIPING WORK 1 Take away dust and moisture Inside of the connecting pipes 2 Tight connection between pipes and unit 3 Evacuate the air in the connecting pipes using VACUUM PUMP 4 Check gas leak connected points 0 29 8 5 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 a vacuum pump Do not use the refrigerant in the outdoor unit For details see the manual of the vacuum pump Using 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 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 evacuating Perform evacuating for about 15 minutes if the piping length is 20 meters 15 minutes for 20 meters assuming a pump capacity of 27 liters per minute Then confirm that the compound pressure gauge reading is 101 kPa 76 cmHg 5 Close the low pressure side valve handle of gauge manifold 6 Open ful
14. G in Table 9 3 1 exchanger the self diagnosis by the remote control 2 When the remote control is set to the service mode the indoor controller diagnoses the operation condition and indicate the information of the self diagnosis on the display of the remote control with the check codes If a fault is detected all lamps on the indoor unit will blink at 5Hz and it will beep for 10 seconds Pi Pi Pi The timer lamp usually blinks BHz during the self diagnosis 9 4 1 How to use remote control in service mode e Alphanumeric characters are used for the check code 5 P MODE C CO O WSWING ZiFIX FAN ON OFF is 5 is A is C ECO HST ok TIMER SET CLR Nhe MEO b is 6 b is B d is D 35 FILE NO SVM 08029 1 Press CHK button with a tip of pencil to set the remote control to the service mode e 00 is indicated on the display of the remote control e The timer lamp on the indoor unit blinks continuously 5 times per 1 sec 2 Press ATEMP 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 paqa se 1d gt 1 s e Check the unit with all 35 check codes 00 to 22 as shown in Table 9 4 1 e Press WTEMP button to change the check code backwards If there is a fault the indoor unit will beep for 10 seconds Pi Pi Pi Not
15. NO YES Is cable connection between indoor NO and outdoor units correct YES Is the voltage across the terminal NO 1 2 AC 220 240V YES Are all the cords for outdoor NO fan motor normal YES Is the outdoor fan motor winding normal NO Check the winding resistance YES NO Is the capacitor for compressor normal YES Outdoor fan motor is defective FILE NO SVM 08029 See Power can not be turned on See Power can not be turned on Relays RY01 or IC30 or Q02 is failure Correct cabling between indoor and outdoor units Cables between indoor and outdoor units are defective Correct the wire or replace the defective cords Outdoor fan motor is defective Capacitor for outdoor fan motor is defective 41 Replace the P C board FILE NO SVM 08029 9 5 6 Only the indoor fan does not operate lt Check procedure gt Shut off the power supply once Turn the power supply Does the fan stop in no operating status YES Control P C board is defective Replace the P C board Start the operation with low fan setting in cool operation Does connecting terminal connecting cable or power supply cord completely Does not found the short wire about connecting cable and power cord Does AC 120V or higher voltage apply to between red and black lead of fa
16. Piping and drain hose installation Piping and drain hose forming Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material Rear right _ n et Bonom et cot Botom right je 1 Die cutting Front panel slit drain hose gt gt gt c x D D 2 A Changing I Die cutting FILE NO SVM 08029 How to fix the drains cap 1 2 Cut out the slit on the leftward 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 leftward connection bottom leftward connection and rear leftward connection s piping it is necessary to change the drain hose and drain cap How to remove the drains cap Clip drain cap by needle nose plier and pull out n Piel Fig 8 4 8 How to install the drain hose e The drain hose can be removed by take off screw after that twisting and pulling e When removing the drain hose be careful of any sharp edges of steel plate The edges can cause injuries Heat insulator Drain hose Fig 8 4 9 No gap 2 Insert hexagonal wrench 4 mm a center head
17. Use the handle of screwdriver etc Fig 8 4 14 NOTE 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 e Bind the auxiliary pipes two and connecting cable with facing tape tightly In case of leftward piping and rear leftward piping bind the auxiliary pipes two only with facing tape Indoor unit Sy cable C e Carefully arrange pipes so that any pipe does not Stick out of the rear plate of the indoor unit Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wound on the connecting pipe to avoid double taping at the joint moreover seal the joint with the vinyl tape etc e Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use Auxiliary pipes Installation plate M CAUTION polyethylene foam as insulating material Kus e When bending a pipe carefully do it not to crush ity 27 the indoor unit on the installation plate at the upper hooks Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate 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 fi
18. a height above the drain guide Wall Drain guide Space for pipes 4 Fig 8 4 19 FILE NO SVM 08029 8 5 Outdoor Unit 8 5 1 Installation place e A place which provides the spaces around the outdoor unit as shown in the left diagram 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 your 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 When the outdoor unit is to be installed in an elevated position be sure to secure its feet e An allowable length of the connecting pipe is up to 10 m and can be increased until 15 m but need to extra charge 20 g m after over 10 e place where the drain water does not raise any e A place where the drain water does not raise any problems CAUTION E 1 Install the outdoor unit without anything blocking the air discharging 2 When the outdoor unit is installed in a place exposed always exposed to strong wind like a coast or on a high storey of a building secure the normal fan operation using a duct or a wind shield 3 In particularly windy areas install the unit such as to avoid admission of wind 4 Installation in the following places may result in trouble Do not install the unit in such places A place full of machine oil
19. allows the unit to restart operating with the set operating conditions in the event of a power supply being accidentally shut down The operation will resume without warning three minutes after power is restored This function is not set to work when shipped from the factory Therefore it is necessary to set it to work 7 7 1 How to Set the Auto Restart Function To set the auto restart function proceed as follows The power supply to the unit must be on the function will not set if the power is off Press the RESET button located in the center of the front panel continuously for three seconds The unit receives the signal and beeps three times The unit then restarts operating automatically in the event of power supply being accidentally shut down When the unit is standby Not operating Operation Motions Press RESET button for more than The unit is on standby three seconds Less than 10 seconds zu The unit starts to operate The green indicator is on After approx three seconds The unit beeps three times The green indicator blinks and continues to operate for 5 seconds If the unit is not required to operate at this time press RESET button once more or use the remote controller to turn it off When the unit is in operation Operation Motions Press RESET button for more than The unit is in operation The green indicator is on three seconds Less th
20. and Outdoor Units o o 5 770 m E Hook M op 2 Installation Mor e plate 770 o y more Shield pipe Active Carbon Catechin filter Pi Batteries 2 S 2 remote control e lt control holder Vinyl tape Apply after carrying out a drainage test e Dhan head wood screw 600 mm or more Extension drain hose Not available provided by installer Before installing the wireless remote control With the remote control cover open load the batteries supplied correctly observing their polarity 2 ireless remote control Batteries 2 Remark Detail of accessory and installation parts can see in the accessory sheet 20 FILE NO SVM 08029 For the rear left and left piping Insert the cushion between the indoor unit and wall and tilt the indoor unit for better operation S Do not allow the drain hose to get slack Cut the piping hole sloped slightly Make sure to run the drain hose sloped downward j The auxiliary piping can be connected to the left rear left rear right right bottom right or bottom left Right lt l A right Bottom Rear right left Bottom left Insulate the refrigerant pipes separately with insulation not together 6 mm thick heat resisting polyethylene foam 8 3 Installation 8 3 1 Optional installation parts ied Parts n
21. control circuit C P U and peripheral circuits tors on the P C board hold the Whole housing buzzer drive circuit and buzzer b Infrared rays receive and indication parts Do not pull at the lead wire Infrared rays receiver unit and LED 44 3 Checking procedure Procedure Shut off the power supply and remove the P C board assembly from the electronic parts base Remove the connecting cable from the terminal block Table 9 6 1 Check Point Symptom 1 Is the fuse blown FILE NO SVM 08029 Causes 1 Application of shock voltage e Overload by short circuit of the parts Remove the connector for the motor and turn the power on If the OPERATION lamp blinks 0 5 sec ON 0 5 sec OFF when the power turning on the checking points described as 1 4 of right column are not necessary to perform Voltage check 1 Between 3 of RYO1 and CN31 AC 220 240V 2 Between and of C27 DC 310 390V 3 Between 12V and 4 Between 5V and GND GND 1 power cord is defective e Poor contact of the terminal plate e Miss wiring of the power relay 2 Capacitor C25 C26 C27 is defective e Line filter L01 is defective e Diode DBO01 is defective 3 T01 are detective 4 1 02 are defective Make the operation status by pushing once the button except the status of FAN ONLY ON TIMER Voltage check 1 Voltage of relay coil
22. is memorized in the microcomputer so that the previous operation can be effected thereafter simply by pressing o button Preset temp 7 3 1 Fan only operation MODE button on the remote control is set to the fan only operation Preset 0 temp 1 When FAN button is set to AUTO the indoor fan motor operates as shown in Fig 7 3 1 When FAN button is set to LOW MED or HIGH the motor operates with a constant air flow zo ES 2 5 a 2 Oo 2 OFFIOFF ON c 65 Q o 2 0 5 C Fig 7 3 2 E z 1 8 2 When FAN button is set to AUTO the indoor fan 2 5 motor operates as shown in Fig 7 3 3 When v 2 FAN button is set to LOW MED or HIGH the motor operates with a constant air flow 1 5 E 5 1 8 C 05 s j 3 Preset 0 e 25 temp 42 1 5 Preset temp 24 C E 1 8 NOTE1 1 Fan speed M L x 3 4 L Preset 0 2 Fan speed M L x 2 4 L temp 3 Fan speed M L x 1 L Linear approximation from M and L NOTE1 1 Fan speed M L x 3 4 L 2 Fan speed M L x 2 4 L 9 Fan speed M L 1 4 L NOTE2 The ECO operation can not be set Linear approximation from M and L Fig 7 3 1 Setting of air flow FAN AUTO Fig 7 3 3 Setting of air flow FAN AUTO _ 13 FILE NO SVM 08029 7 3 3 Dry operat
23. m 402 43T60383 TERMINAL 43T69364 FUSE TEMPERATURE 403 43T69004 SENSOR HEAT EXCHANGER 43T60366 POWER CORD 404 43T69005 SENSOR THERMOSTAT 43T62003 CORD CLAMP 405 43T69641 PC BOARD ASSY WRS LED 43T69740 ASM PCB SERV _ 57 11 2 Indoor Unit 223 224 Location Part 43T21397 43T21393 43T22312 43T70313 43T20325 43T49010 43T63002 43T60382 43T82310 43T19333 43T09408 43T03362 43T39327 226 222 227 LOUVER MOTOR FAN MOTOR MOLD BEARING ASSEMBLY DRAIN HOSE CROSS FLOW FAN ASSEMBLY PIPE SHIELD REMOTE CONTROL HOLDER MOTOR CORD INSTALLATION PLATE SENSOR FIX PLATE PIPE HOLDER BACK BODY ASSEMBLY BEARING BASE FILE NO SVM 08029 ectric Parts Assembly Location Part m 43139328 43T39329 43T09409 43779313 43744406 43T00493 43T80318 43780319 43709416 43762328 43769437 MOTOR BAND LEFT MOTOR BAND RIGHT HORIZONTAL LOUVER DRAIN CAP REFRIGERANT CYCLE ASSEMBLY PANEL SERVICE ASSEMBLY AIR FILTER R AIR FILTER L GRILLE OF AIR INLET TERMINAL COVER WIRELESS REMOTE CONTROL FILE NO SVM 08029 11 3 Outdoor Unit 11 CAPILLARY TUBE Location Part Location Part 16 43742335 BASE PLATE ASSEMBLY 43T19335 FAN GUARD 43741410 COMPRESSOR 43T04304 PARTITION 43149327 CUSHION RUBBER 43T39326 MOTOR BASE CONNECTION PLATE 43T97001 NUT 43T39325 MOTOR BASE 43743406 CONDENSER ASSEMBLY 43T19337 PACKED VALVE COVER 43T00448 FIX
24. plate Installation plate Front panel 5 Remove the front panel fixing screws 2 pcs 6 Take off three hooks of panel from rear side Three hooks pauz lt How to assemble the front panel gt 1 Press three center positions and two lower center positions of the air outlet and then hang the hanging hooks 3 pcs at the top side of the front panel to the rear plate 2 Tighten two screws Incomplete hanging or incomplete pressing may cause a dewdrops or generation of a fluttering sound Part name Electric parts box assembly Procedures 1 Follow the procedure up to 3 in D above 2 Remove screw of earth lead attached to the end plate of the evaporator 3 Remove the lead wire cover and remove connector for the fan motor and connec tor for the louver motor from the electric parts box assembly 4 Pull out TC sensor from sensor holder of the evaporator 5 Disengage the display unit by simply pushing at the top of the display unit 6 Remove the fixing screw that secures the electric parts box assembly and remove the assembly How to assemble the electric parts box 1 Hook the top part of the electric parts box assembly onto the claws on the back body and secure it using the fixing screw Now attach the display unit Connect the connectors for the fan motor and louver motor 2 Secure the grounding wire using the fixing screw Insert the TC sensor into the sen
25. 5 High 27 19 35 24 Cooling Overload 0 62 17 0 High 32 23 43 26 Low temperature 0 48 2 0 Low 21 15 21 15 Standard Surface temp of heat pressure P exchanger interchanging MPaG pipe T1 C e Measure the heat exchanger temperature at the center of U bend By means of TC sensor FILE NO SVM 08029 6 CONTROL BLOCK DIAGRAM Ko T Heat Exchange sensor Functions 1 Operation Display e Louver Control Display Sign Displa e 3 minutes Delay at Restart ISP for Compressor Filter Sign Display Infrared Rays Signal Reciver Initiallizing Circuit e Motor Revolution Control Clock Frequenc Oscillator e Pr cessing Temperature Processing Indoor Fan Ppa M t e Timer otor ON OFF Power Supply Compressor Circuit ON OFF Signal Noise Filter Relay Driver Louver Driver Signal I Louver 1 1 Louver Motor 220 240 V 50Hz lt REMOTE CONTROL Remote Control CL xpi eue queer S Operation START STOP Operation Mode Selection f AUTO COOL DRY AUTO FAN Temperature Setting Fan H eTWERSHR H i Louver Auto Swing Louver Direction Setting i lawa FILE NO SVM 08029 7 OPERATION DESCRIPTION 7 1 Remote control 7 1 1 Function of Pus
26. DC 12V Between pin 2 of RYO1 and GND 2 Between No 1 and 2 of connecting cable terminal block AC 220 240V 1 Breaking wire of the relay coil defective relay driver Q02 2 Poor contact of relay Start the operation with the system which the time of the restart delay timer is shortened 1 All indicators light for 3 sec 2 Indicators do not indicate normally after approximate 3 sec Defective indicator or poor housing assembly CN14 Make the operation status by pressing once the button 1 The time of the restart delay timer is shortened 2 Cool operation 3 Air volume AUTO 4 Make the setting temperature lower enough than room temperature 5 Continuous operation 1 Compressor does not operate 2 OPERATION lamp blinks 1 The temperature of the indoor heat exchanger is abnormally lower 2 Poor contact of the heat exchanger sensor The connector is disconnected CNO1 3 Heat exchanger sensor main P C board are defective Refer to Table 9 6 2 for the judgment of defective resistance values 4 Main P C board is defective Turn the power on after connecting the motor connector Start the operation with the following condition 1 Operation Cooling 2 Airflow High fan 3 Continuous operation 1 Motor does not rotate The key operation is accepted 2 The Motor rotates but it vibrates too much 45 1 Poor contact o
27. ING PLATE VALVE 43T00481 UPPER CABINET 43746332 VALVE PACKED 6 35 DIA 43T96305 BUSHING 43T46019 VALVE PACKED 12 7 DIA 43T62323 TERMINAL COVER 43747331 BONNET 6 35 DIA 43T19336 FIN GUARD 43T47333 BONNET 12 70 DIA 43T54301 RELAY OVERLOAD 43T47014 CAPILLARY TUBE 1 7DIA 43T61310 ELECTRIC PARTS BASE 43T00487 FRONT CABINET 43T55337 MF CAPACITOR 43T21361 FAN MOTOR 43T55325 CAPACITOR PLASTIC FILM 43T20324 PROPELLER FAN 43T60367 TERMINAL 2P 43747001 NUT FLANGE 59 TOSHIBA CARRIER THAILAND CO LTD 144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAMBOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND
28. TO G H B A FILE NO SVM 08029 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS 12SKSX 1 RAS 12SASX 1 April 2008 10 11 FILE NO SVM 08029 CONTENTS SPECIFICATIONS CONSTRUCTION VIEWS 2 1 Indoor Unit 2 2 Outdoor Unit WIRING DIAGRAM SPECIFICATION OF ELECTRICAL PARTS 4 1 Indoor Unit 4 2 Outdoor Unit REFRIGERATION CYCLE DIAGRAM CONTROL BLOCK DIAGRAM OPERATION DESCRIPTION 7 1 Remote Control 7 2 Outline of Air Conditioner Control 7 3 Description of Operation Mode 7 4 Low Temperature Limit Control 7 5 Operation 7 6 Filter Check Lamp 7 7 Auto Restart Function INSTALLATION PROCEDURE 8 1 Safety Cautions 8 2 Installation Diagram of Indoor and Outdoor Units 8 3 Installation 8 4 Indoor Unit 8 5 Outdoor Unit 8 6 How to Set Remote Control Selector Switch 8 7 Others TROUBLESHOOTING CHART 9 1 Troubleshooting Procedure 9 2 Basic Check Items 9 3 Primary Judgement 9 4 Self Diagnosis by Remote Control Check Code 9 5 Troubleshooting Flowcharts 9 6 Troubleshooting for Remote Control Including the Indoor P C Board HOW TO REPLACE THE MAIN PARTS 10 1 Indoor Unit 10 2 Outdoor Unit EXPLODED VIEWS AND PARTS LIST 11 1 Indoor Unit E Parts Assy 11 2 Indoor Unit 11 3 Outdoor Unit ITEM FILE NO SVM 08029 1 SPECIFICATIONS RAS 12SKSX 1 RAS 12SASX 1 Capacity kW 12 Power source V
29. Table 7 2 1 1 When setting the fan speed to L M or H on the remote controller the operation is performed with the constant speed shown in Fig 7 2 1 Fig 7 2 1 Indication Fan speed Low Med High 2 When setting the fan speed to AUTO on the remote controller revolution of the fan motor is controlled to the fan speed level shown in Table 1 according to the setup temperature room temperature and heat exchanger temperature 3 When setting the fan speed to QUIET on the remote controller revolution of the fan motor is controlled to the fan speed level is L FAN TAP MODE Fan Ne M UL SL H M UL 1300 12501 160 1001 060 RAS 12SKSX 1 Air flow volume m h 590 530 490 470 1000 950 800 750 700 650 600 430 410 320 290 260 230 200 12 FILE NO SVM 08029 7 3 Description of Operation Mode 7 3 2 Cooling operation MODE button on the remote control is set 1 When turning on the breaker the operation lamp to the cooling operation blinks This means that the power is on or the power supply is cut off 1 The compressor outdoor fan and operation display lamp are controlled as shown in Fig 7 3 2 b 2 When pressing 0 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 8 Once the operation mode is set it
30. ame Q ty Refrigerant piping One A Liquid side 26 35 mm ach Gas side 212 70 mm B Pipe insulating material 1 polyethylene foam 6 mm thick Putty PVC tapes One each lt Fixing bolt arrangement of outdoor unit gt 500 mm pe o 97mm Air inlet a kame 601 cae NN tle gy Air outlet Drain outlet 53 mm i 280 mm Fig 8 3 1 FILE NO SVM 08029 e Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind e Use 28 mm or 210 mm anchor bolts and nuts 21 8 3 2 Accessory and installation parts FILE NO SVM 08029 Part No Part name Q ty Part No Part name Q ty Part No Part name Q ty 5e f f Installation plate x 1 4 Remote control holder x 1 gt Pan head wood screw 23 1x 167 x2 Wireless remote control x 1 Active Carbon Catechin filter x 2 9 Battery x 2 Cmm Mounting screw 24 x 25 x 6 Others Name Owner s manual Installation manual 22 FILE NO SVM 08029 8 4 Indoor Unit 8 4 1 Installation place 8 4 2 Cutting a hole and mounting installation e A place which provides the spaces around the plate indoor unit as shown in the diagram Cutting a hole e A place where there is no obstacle near the air inlet and outlet When installing the refrigerant pipe
31. an 10 seconds The unit stops operating The green indicator is turned off L After approx three seconds The unit beeps three times The green indicator blinks for 5 seconds If the unit is required to operate at this time press RESET button once more or use the remote controller to turn it on While the filter check indicator is on the RESET button has the function of filter reset button 16 FILE NO SVM 08029 7 7 2 How to Cancel the 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 controller after the main power supply is turned off When the system is on stand by not operating Operation Press RESET button for more than three seconds Less than 10 seconds When the system is operating Operation Press RESET button for more than three seconds Less than 10 seconds Motions The unit is on standby i The unit starts to operate The green indicator is on 4 After approx three seconds The unit beeps three times and continues to operate If the unit is not required to operate at this time press RESET button once more or use the remote controller to turn it off Motion
32. cable abnormal wrong fuse 2 Terminal fuse cut 2 Check thermal fuse Refrigerant off and Terminal blocks system 3 If it is OK check P C board 1 Otherparts j q 1 Overload relay or All off Indicated 1 If overload relay and J I including tt thermostat for when detected themostat for compres compressor compressor abnormal sor are OK check break refrigerant cycle 2 If refrigerant cycle is OK check P C board 3 If heat exchanger sensor is OK check overload relay and themostat for compressor Content detected by the check codes fid are stored in memory of the microcomputer even if the power supply is turned off Therefore contents of operations in the past are all displayed 36 9 5 Troubleshooting Flowcharts FILE NO SVM 08029 9 5 1 Power can not be turned on No operation at all Preliminary checks 1 Is the supply voltage normal 2 Is the connection to the AC output OK Shut off the power supply from AC outlet once and turn it on after 5 seconds Does the OPERATION lamp blink YES NO Does the power turn on by pushing the 0 button of the remote control Does the fuse F01 blow Does the thermal fuse blow Under PF Terminal Is the indication voltage DC12V or 5V of main P C board correct YES Is the voltage across C32 measured DC12V 15V Refer to the paragraph Pre check or defective c
33. e YES To the paragraph of No Power turns on d w N DN B __ Brown T gt 11 Black Green Yellow White UAE BI a CN31 E 1X2 Indoor Terminal Block 2 ee 7 V PC Board WP 018 2 ES et RF fo Lu LU UN Bd Green Yellow U O gt 98 9 5 3 Outdoor unit does not operate Shut off the power supply from AC outlet once and turn it on after 5 seconds NO Does the OPERATION lamp blink YES Does the power turn on by pushing NO the button of the remote control YES Is AC 220 240V supplied between terminal block 1 2 YES Is cable connection between indoor NO and outdoor units correct YES Check items as following procedure in 9 5 4 9 5 5 9 5 6 See Power can not be turned on See Power can not be turned on Relays RY01 Q02 or is failure Correct cabling between indoor and outdoor units 39 FILE NO SVM 08029 Replace the P C board 9 5 4 Only compressor does not operate Shut off the power supply from AC outlet once and turn it on after 5 seconds YES NO Does the OPERATION lamp blink Does the power turn on by pushing the 5 button of the remote control NO YES Is the voltage across the indoor terminal NO D 3
34. e 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 3 Press START STOP button to release the service mode The display of the remote control returns to as it was before service mode was engaged FILE NO SVM 08029 Table 9 4 1 Block level Diagnosis function Air i peu Block pit Symptom Conditioner Condition status 71 Indoor Thermo sensor Continued Indicated 1 Check thermo sensor J iJ board j short break operation when detected 2 If itis OK check abnormal P C board f Heat exchanger Continued Indicated 1 Check heat exchanger i sensor operation when detected sensor short break abnormal 2 If itis OK check P C board Indoor fan lock All off Indicated 1 Check heat thermal abnormality of when detected fuse is blow or not indoor fan or abnormal Terminal block part thermal fuse break 2 If the thermal fuse is not blow check indoor fan motor Refer to trouble shooting flow charts 1 1 Abnormality of other All off Indicated Replace P C borad I indoor unit when detected board abnormal f I Cable tt 1 Wrong wiring or All off Indicated 1 Check connective J_t connection J disconnection of when detected cable correct if wiring is Thermal connective
35. f the motor connector 2 P C board is defective FILE NO SVM 08029 Table 9 6 2 Approximate resistance value of thermo sensor kQ Temperature 0 C 10 C 20 C 25 C 30 C Resistance value 33 8 20 35 12 59 10 00 7 99 9 6 2 How to shorten time of restart delay timer Press CLR button while pressing CHK button with a tip of a pencil Then press START STOP button to transmit the signal to the indoor unit Y TEMP A C D START STOP WSWING 7iFIX FAN MODE pst ECO a ON OFF SET CLR CLR button 9 6 3 How to set cancel the self cleaning function The self cleaning function is set from a factory To cancel this function should keep press the RESET button for 20 seconds till can hear the long combination sound and repeat the same procedure when need to set 46 FILE NO SVM 08029 10 HOW TO REPLACE THE MAIN PARTS WARNING Since high voltages pass through the electrical parts turn off the power without fail before proceeding with the repairs Electric shocks may occur if the power plug is not disconnected After the repairs have been completed after the front panel and cabinet have been installed perform a test run and check for smoking unusual sounds and other abnormalities If this check is omitted a fire and or electric shocks may occur Before proceeding with the test run install the front panel and cabinet Ensure tha
36. h Button Infrared signal emitter Set louver button FIX Auto louver button SWING Mode select button MODE Reset button RST On timer button ON Off timer button OFF Reserve button SET Cancel button CLR Check button CHK ECO button ECO Fan speed button FAN Start Stop button START STOP Temperature button v 4 amp GG GO e G TOSHIBA Y START STOP ON OFF SET CLR 10 7 1 2 Display of Remote Control FILE NO SVM 08029 All indications except for the clock time indicator are displayed by pressing the D button Indicate when press the operation ON OFF button FAN speed indicator Indicates the selected fan speed AUTO QUIET or three fan speed levels A LOW a MED HIGH can be shown Indicate Auto will be appear with Dry operation only ON OFF TIMER indicator Indicates when the ON OFF TIMER operation ON TIMER Hr ON OFF TIMER OFF 1 Transmission mark 6 Operation This transmission mark A indicates when the remote controller transmits signals to the indoor unit T 2 Mode indicator Indicates the current operation mode AUTO COOL DRY and AUTO FAN 3 Temperature indicator Indicates the temperature setting 17 C to 30 C 4 ECO indicator 8 Indicates when the ECO is in activated Press the ECO button to start and press it again to s
37. ight nearer to the infrared near by signal receiver of the air conditioner YES Push the 6 YES button Battery life Is there any thyristor NO NO Is operation possible Dose the when setting the temporary switch of the air conditioner main unit to TEST RUN or TEMPORARY AUTO transmission indicator light NO YES Is there any beep and operation YES NO YES Can any signal tone be heard in a trasistor radio when transmitting within 5 cm distance from the radio NO YES Remote control P C board is failure is failure Keep the air conditioner away Avoid direct from thyristor Replace Replace the Normal Replace remote sunlight fluorescent light P C board batteries control 43 FILE NO SVM 08029 9 6 1 How to check the P C board 2 Inspection procedres 1 Operating precautions 1 When a P C board is judged to be defective 1 When removing the front panel or the P C board check for disconnection burning or discolora be sure to shut off the power supply tion of the copper foil pattern or this P C board 2 When removing the P C board hold the edge of 2 The board consists of the following 2 parts the P C board and do not apply force to the a Main P C board part power relay indoor fan motor drive circuit and parts 90 3 When connecting or disconnecting the connec
38. ion 7 3 4 Automatic operation MODE button on the remote control is set MODE button on the remote control is set to the dry operation to the automatic operation 1 The compressor outdoor fan and operation 1 One of 2 operations Cooling or Fan only is selected according to difference between the display lamp are controlled as shown in preset temperature and the room temperature at Fig 7 3 4 ME which the automatic operation has started as By 46 shown in Fig 7 3 6 The Fan only operation 5 Eh 52 continues until the room temperature reaches u level at which another mode is selected cf ct 2 Temporary Auto 5 59 59 ON When the RESET button on the indoor unit is pushed the preset temperature is fixed at 24 m and the indoor unit is controlled as shown in 5 mm Fig 7 3 6 x OFF OFF Preset 0 eC BOR 2 5 52 OlyG 5 2188 ol S 65 Fig 7 3 4 Cooling operation 0 2 The microprocessor turns the compressor on and off at the regular intervals 4 to 6 minutes While the compressor is turning off the indoor fan motor operates in the SUPER LOW position The pattern of operation depending on the relation between room temperature and preset temperatures is shown in Fig 7 3 5 Fan only operation Room temp Preset temp Room temp Fig 7 3 6 Preset temp 1 Preset temp 7 4 Low Temperature Limit Control The microcon
39. ircuit before power P C board block NO Parts R62 R63 R64 C25 5601 C27 DB01 ICO1 T01 are defective Wrong wiring of AC cord or connecting cable is defective Does the CN14 connector the wrong connecting Operation Check Items Main cause Countermeasure Symptom Does the transmission indicator of remote control flash normally and transmit certainly Remote control is defective Replace the remote control No problem Replace the thermal fuse set Check connection P C board is defective Re wiring the cable Is the secondary Shut off the power Is the secondary voltage of supply once and turn voltage of transformer for Replace the main transformer it on again after transformer power supply is PC board measured DC10 16V disconnecting the motor measured DC10 16V defective connector CN10 Motor is defective 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 37 FILE NO SVM 08029 9 5 2 Power can not be turned on after replacing indoor P C board Checking Procedure Connect the AC Power supply Does the OPERATION lamp blink Isi Wired as shown Return the wiring of the in Figure below power relay is returned to the normal procedur
40. ly the valve stem of the packed valves both sides of Gas and Liquid 7 Remove the charging hose from the service port 8 Securely tighten the caps on the packed valves Compound pressure gauge Pressure gauge 101 kPa 76 cmHg Manifold valve P Me lt lt Handle Hi Handle Lo Keep full closed Charge hose Charge hose Connecting pipe Vacuum pump adapter for counter flow prevention Vacuum pump Packed valve at gas side Service port Valve core Setting pin Packed valve at liquid side Fig 8 5 7 FILE NO SVM 08029 Packed valve handling precautions Open the valve stem all the way out but do not try to open it beyond the stopper Securely tighten the valve stem cap with torque in the following table 50 to 62 5 0 to 6 2 Gas side 212 70 mm 30 to 42 N m 3 0 to 4 2 kgf m Gas side 29 52 mm 16 to 18 Num 1 6 to 1 8 kgf m Liquid side 26 35 mm 9 to 10 Nem 0 9 to 1 0 kgf m Hexagonal wrench is required e Service port Fig 8 5 8 30 8 5 4 Wiring connection Remove the valve cover from the outdoor unit Connect the connecting cable to the terminal as identified with their respective matched numbers on the terminal block of indoor and outdoor unit When connecting the connecting cable to the outdoor unit terminal make a loop as
41. n incorporate itin the main body Bearing Bearing base Part name Fan motor Procedures 1 Follow to the procedure till item 2 Loosen the set screw of the cross flow fan 3 Remove two fixing screws of the motor cover and them remove the motor cover 4 Remove two more fixing screws of the motor band and remove the motor band 5 Pull the fan motor outward FILE NO SVM 08029 Remarks Set screw Motor cover Two screws on motor band Two Screws Part name Cross flow fan Procedures Caution at reassembling 1 To incorporate the fan motor remove the fan motor rubber at shaft core side incorporate the motor into the position in the following figure and then install the fan motor Install the cross flow fan so that the right end of the 1st joint from the right of the cross flow fan is set keeping 70 5 mm from wall of rear plate of the main unit Holding the set screw install the cross flow fan so that U groove of the fan motor comes to the mounting hole of the set screw Perform positioning of the fan motor as follows When assembling the fan motor the fan motor must be installed in such a way that the fan motor leads will be taken out is positioned at the bottom front After assembling the two hooking claws of the motor band right into the main body position the fan motor insert it and then secure the motor band right using the two fi
42. n motor Does the fan rotate YES Shut off the power supply Repair the Thermal fuse operated Does the cross flow pa due to prevent bearing of ae fan rotate normally the fan temperature rising cause YES of incompleted connecting Change the setting of cooling to hight fan Turn on the power supply Motor control circuit failure IC30 1 03 Q08 T01 or 12V power circuit failire Replace the P C board Operation stops Does the fan speed become higher YES Is the rotation signal 5 0 output between 2 gray lead wire and 3 brown lead wire of the motor connector CN11 when rotating Replace the fan motor the cross flow fan by hand in no operating status 1 pulse one turn Replace connecting the cable or power cord thermal fuse and terminal block Replace the control 42 FILE NO SVM 08029 9 6 Troubleshooting for Remote Control Including the Indoor P C Board There is no been from the indoor unit The operation lamp of the air conditioner main unit does not light Push the d button Does the transmission indicator blink NO YES Reset the remote control by use the tip pencil push in the RESET hole Is there direct sunlight on the receptor of the air conditioner NO YES Is operation possible when the transmitter is moved fluorescent l
43. ng of operation commands to the outdoor unit e Receiving of information of the operation status and judging of the information or indication of error Role of outdoor unit controller The outdoor unit controller receives the operation commands from the indoor controller and executes them Compressor operation control Operation control of outdoor fan motor Operations according to the commands from the indoor unit Table 7 2 1 Indoor fan and air flow rate OPERATION Cooling FILE NO SVM 08029 e Turning off the compressor and outdoor f an when the outdoor unit receives the shut down command 7 2 1 Louver control 1 Vertical air flow louver Position of veritcal air flow louver is automatically controlled according to the operation mode Besides position of vertical air flow louver can be arbitrarily set by pressing FIX button The louver position which is set by FIX button is stored in the microcomputer and the louver is automatically set at the stored position for the next operation 2 Swing If SWING button is pressed when the indoor unit is in operation the vertical air flow louver starts swinging When FIX button is pressed it stops swinging 7 2 2 Indoor Fan Control The operation controls the fan speed at indoor unit side The indoor fan cross flow fan is operated by the phase control induction motor The fan rotates in 3 stages in MANUAL mode and in 5 stages in AUTO mode respectively
44. not 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 Also make sure the equipment is properly earthed Appliance shall be installed in accordance with national wiring regulations If you detect any damage do not install the unit Contact your TOSHIBA dealer immediately Exposure of unit to water or other moisture before installation could result in electric shock Do not store it 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 parts with sharp edges Please read this installation manual carefully before installing the unit It contains further important instructions for proper installation 18 FILE NO SVM 08029 REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER Please make absolutely sure that the installation of this appliance is reported to the local power supplier before installation If you experience any problems or if the installation is not accepted by the supplier the service agency will take adequate countermeasures 19 8 2 Installation Diagram of Indoor
45. ns 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 WRONGLY ELECTRIC PARTS MAY BE DAMAGED CHECK THE EARTH WIRE THAT IT 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 HEATORS FURNACE STOVES ETC WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN BE VERY CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT R22 WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLATION WORK IMMEDIATELY LET FRESH AIR INTO THE ROOM IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE IT CAUSES GENERATION OF POISONOUS GAS WARNING Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock Switches Do not install in a place which can
46. r which disconnects When installing the installation plate with a all poles and has a contact separation of at mounting screw do not use the anchor bolt hole least 3 mm must be incorporate in the fixed Otherwise the unit may fall down and result in wiring An approved circuit breaker or personal injury and property damage switches must used 2 Connection with power supply plug Installation plate Attach power supply plug with power cord Keep horizontel direction and plug it into wall outlet An approved Ld sa a power supply cord and plug must be used C Bol eX n NOTE gt O gt ee e Ensure all wiring is used within its electrical rating Projection 5 mm dia hole 15 mm or less Z Power source 50Hz 220 240 V Single phase Du 6 Mounting Maximum ok 4 x 250 running current ww CERES anchor direc 16A local parts Power cord 1 5 mm or more Fig 8 4 4 Failure to firmly install the unit may result in personal injury and property damage if the unit falls e Incase of block brick concrete or similar type walls make 5 mm dia holes in the wall e Insert clip anchors for appropriate mounting screws NOTE e Secure four corners and lower parts of the installation plate with 4 to 6 mounting screws to install it 24 8 4 4 Wiring connection How to connect the connecting cable Wiring of the connecting cable can be carried out without removing the front panel
47. rmly hooked up on the installation plate Hook here E D Installation plate Press unhook Fig 8 4 15 For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing its bottom up at the specified parts Push Push Fig 8 4 16 8 4 7 Drainage 1 Run the drain hose sloped downwards NOTE Hole should be made at a slight downward slant on the outdoor side Do not form the Do not rise the drain hose into drain hose a wavy shape Z ex x x Lx or more 2 2 gt gt 6 of T A Do not put Do not put the drain the drain hose end hose end in into water the drainage ditch Fig 8 4 17 2 Put water in the drain pan and make sure that the water is drained out of doors 3 When connecting extension drain hose insulate the connecting part of extension drain hose with shield pipe Shield pipe E x 1 B Extension drain hose 4 Drain hose Inside the room Fig 8 4 18 Arrange the drain pipe for proper drainage from the unit Improper drainage can result in dew dropping This air conditioner has the structure designed to drain water collected from dew which forms on the back of the indoor unit to the drain pan Therefore do not store the power cord and other parts at
48. s The unit is in operation The green indicator is on i The unit stops operating The green indicator is turned off L After approx three seconds The unit beeps three times If the unit is required to operate at this time press RESET button once more or use the remote controller to turn it on 7 7 3 Power Failure During Timer Operation When the unit is turned off because of power failure during timer operation the timer operation is can celled In that case set the timer operation again NOTE The Everyday Timer is reset while a command signal can be received from the remote controller even if it stopped due to a power failure 17 FILE NO SVM 08029 8 INSTALLATION PROCEDURE 8 1 Safety Cautions For general public use Power supply cord of parts of appliance for Outdoor use shall be at least polychloroprene sheathed flexible cord design H07 RN F or cord designation 245 IEC66 Shall be installed in accordance with national wiring regulations 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 in all poles If this is not possible a power supply plug with earth must be used This plug must be easily accessible after installation The plug must be disconnected from the power supply socket in order to disconnect the appliance completely from the mai
49. s from the rear e A place that allows easy installation of the piping to the outdoor unit e A place which allows the front panel to be opened 3 e The indoor unit shall be installed as top of the indoor unit B 0 0 9 comes to at least 2 m height Also it must be avoided to d put anything on the top of the indoor unit s 5 Pipe T Direct sunlight to the indoor unit s wireless as 3 3 receiver should be avoided ema The microprocessor in the indoor unit should not be too close to RF noise sources Fig 8 4 2 For details see the owner s manual 1 After determining the pipe hole position on the Remote control gt mounting plate drill the pipe hole 265 mm at place where there are no obstacles such as a a slight downward slant to the outdoor side curtain that may block the signal from the indoor unit NOTE Do not install the remote control a place exposed When drilling a wall that contains a metal lath wire to direct sunlight or close to a heating source such lath or metal plate be sure to use a pipe hole brim as a stove ring sold separately e Keep the remote control at least 1 m apart from the nearest TV set stereo equipment This is Mounting the in
50. shown in the installation diagram of indoor and outdoor unit to prevent water coming in the outdoor unit Insulate the unused cords conductors from any water coming in the outdoor unit Proceed them so e that they do not touch any electrical or metal parts Stripping length of connecting cable gt 75 mm Terminal 10mm Earth line screw Es ae OF N Earth line 10 mm g Connecting gt M cable gt 65 mm Cord clamp Fig 8 5 9 M CAUTION Wrong wiring connection may cause some electrical parts burn out e Be sure to comply with local codes on running the wire from indoor unit to outdoor unit size of wire and wiring method etc M e Every wire must be connected firmly P NOTE Wire type HO7RN F or 245 IEC66 2 0 mm or more FILE NO SVM 08029 8 6 How to Set Remote Control Selector Switch When two indoor units are installed in the seperated rooms It is not necessary to change the selector switches Remote control selector switch gt When two indoor units are installed in the same room or adjacent two rooms if operating a unit two units may receive the remote control signal simultaneously and operate In this case the operation can be preserved by setting either one indoor unit or remote control to B setting Both are set to A setting in factory shipment The remote control signal is not received when the se
51. sor holder Be absolutely sure to loop the grounding wire and TC sensor leads once at the bottom FILE NO SVM 08029 Remarks Electric part box cover TC sensor Fan motor Earth Screw connector Fixing screw AC fan motor connector Louver motor connector FILE NO SVM 08029 Part name Procedures Remarks Horizontal louver 1 Remove shaft of the horizontal louver from the back body First remove the left shaft and then remove other shafts while sliding the horizontal louver leftward Evaporator 1 Follow to the procedure in the item Heat exchanger 2 Remove the pipe holder from the rear side of the main unit 3 Remove two fixing screws at the left side of the end plate of the heat exchanger Li 2 ad B d 4 Remove one fixing screw on the heat exchage fixing holder to separate the fede heat exchage from the back body holder L ii Bis e E n d validi nmm 5 Remove right side of the end plate from two fixing rib while sliding slightly the heat exchanger rightward Rib on the right side of the end plate FILE NO SVM 08029 Part name Procedures Remarks Bearing 1 Follow to the procedure in the item 2 2 Remove the two screws used to secure the bearing base Two screws 3 Remove the bearing base Caution at assembling If the bearing is out from the housing push it into the specified position and the
52. stallation plate necessary to prevent image disturbances or noise interference e The location of the remote control should be Anchor bolt holes determined as shown below EL rrr zi 2 roe oes e f s u 8 MORTE ERR fee s dedos Trot Zn E Side Vien Top view I oF M SW 5 Indoor unit gt lt J _ gt Er EF AE oo M 7 e H el d 6 Z Remote K S A con Ee y 3 com Remote did Pi v Hook P Hook Installation P Thr ad Pipe Plate Indoor unit E Weight mounting screw Fig 8 4 1 Fig 8 4 3 23 FILE NO SVM 08029 When the installation plate is directly mounted on 8 4 3 Electrical work mower 1 The supply voltage must be the same as the rated 1 Securely fit the installation plate onto the wall by voltage of the air conditioner screwing it in the upper and lower parts to hook up 2 Prepare the power source for exclusive use with the the indoor unit air conditioner 2 To mount the installation plate on a concrete wall with anchor bolts utilize the anchor bolt holes as f CAUTION E illustrated in the above figure 3 Install the installation plate horizontally in the wall This appliance can be connected to the mains in either of the following two ways 1 Connection to fixed wiring CAUTION A switch or circuit breake
53. t the following steps are taken when doing repairs on the refrigerating cycle 1 Do not allow any naked flames in the surrounding area If a gas stove or other appliance is being used extinguish the flames before proceeding If the flames are not extinguished they may ignite any oil mixed with the refrigerant gas Do not use welding equipment in an airtight room Carbon monoxide poisoning may result if the room is not properly ventilated Do not bring welding equipment near flammable objects Flames from the equipment may cause the flammable objects to catch fire If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir cuitry wear rubber gloves to avoid contact with the live parts Electric shocks may be received if the live parts are touched High voltage circuits are contained inside this unit Proceed very carefully when conducting checks since directly touching the parts on the control circuit board may result in electric shocks 10 1 Indoor Unit Part name Procedures Remarks Front panel 1 Stop operation of the air conditioner and turn off its main power supply 2 Open the air inlet grille push the arm toward the outside and remove the grille 3 Remove the left and right air filters Part name Front panel FILE NO SVM 08029 Procedures Remarks 4 Press PUSH part under the front panel and remove hooks of the front panel from f the installation
54. tem 1 of Remove upper screw ST1T 4 x 102 3 pcs of the front cabinet and lower screws ST1T 4 x 102 8 pcs of the front cabinet e Both side of front cabinet envelop the unit so remove it by pulling sideward 2 Attachment 1 Assemble front cabinet to the unit 2 Attach the removed screws to the original positions Part name Fan motor Compressor Procedures Perform work of item 1 of D and 1 of 2 Remove the flange nut fixing the fan motor and the propeller fan e Flange nut is loosened by turning clockwise To tighten the flange nut turn counter clockwise Remove the propeller fan Disconnect the connector for the fan motor from the ASM E PARTS Remove the fixing screws 4 pcs holding the fan motor by hand so that it does not fall 1 Perform work of item 1 of 1 of 2 2 Extract refrigerant gas 3 Remove the partition board ST1T 4 x 102 3 pcs 4 Remove the sound insulation material Remove the terminal cover of the compressor and disconnect the lead wire of the compressor thermo and the compressor from the terminal 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 2 pcs 8 Pull upward the refrigeration cycle 9 Remove the nut fixing the compressor to the base plate 55 FILE NO SVM 08029 Remarks
55. the indoor unit Table 9 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 OPERATION lamp is blinking 5Hz OPERATION lamp is blinking 5Hz Indoor fan motor lock or failure OPERATION lamp is blinking 5Hz Indoor P C board failure OPERATION and TIMER lamps are blinking 5Hz Wrong wiring of connecting cable OPERATION TIMER and FAN ONLY lamps are blinking Cycle failure e Gas shortage or other refrigerant cycle trouble e Heat exchanger sensor open break or short e Overload relay or thermostat trouble of compressor Table 9 3 2 Diagnosis by detective operation Symptom The remote control does not work Turn off the power supply once then turn it on Try to operate the remote control Primary judgement The remote control still does not work The indoor unit and or remote control is are defective The remote control OK works The outdoor fan does not rotate The compressor operates The outdoor unit Outdoor fan motor is defective The compressor does not operate An internal part of the compressor or PCB is defective 34 9 4 Self Diagnosis by Remote Control Check Code 1 If the lamps are indicated as shown B to
56. top operate 5 A B change indicator remote controller When the remote controller switching function is set B appears in the remote controller display When the remote controller seting is A there is no indication at this position 1 2 37 6 MODE TEMP FAN AUTO AUTO v A Nd coor 7 Lf S quer DRY 7 AUTO FAN FNS Hr ON O 7 8 4 5 8 44 7 2 Outline of Air Conditioner Control This is a fixed capacity type air conditioner which uses a AC motor for an indoor fan The AC motor drive circuit is mounted in the indoor unit And electrical parts which operate the compressor and the outdoor fan motor are mounted in the outdoor unit The air conditioner is mainly controlled by the indoor unit controller The controller operates the indoor fan motor based upon commands transmitted by the remote control and transfers the operation commands to the outdoor unit The outdoor unit receives operation commands from the indoor unit and operates the outdoor fan motor and the compressor 1 Role of indoor unit controller The indoor unit controller receives the operation commands from the remote control and executes them e Temperature measurement at the air inlet of the indoor heat exchanger by the indoor temperature sensor Temperature measurement of the indoor heat exchanger by the heat exchanger sensor Louver motor control e Indoor fan motor operation control e LED display control e Transferri
57. troller detects the indoor heat exchanger temperature to prevent the indoor heat exchanger from freezing The compressor and outdoor fan motor are controlled as shown in Fig 7 4 1 Compressor Outdoor fan Super Low Fig 7 3 5 Heat exchanger temperature Compressor Outdoor fan C 3 FAN button on the remote control is set to AUTO only Less than 2 C continues for 5 minutes 4 The ECO operations can not be set 2 N c7 OFF Fig 7 4 1 14 7 5 ECO Operation Cooling operation e The preset temperature will increase 1 C after the ECO mode has operated for 1 hour and the temperature will increase another 1 C after the ECO mode has operated for 2 hour the value of the preset temperature on the remote control does not change e The indoor fan speed is L 7 6 FILTER CHECK LAMP When the elapsed time reaches 1000 hours the FILTER indicator lights After cleaning the filters turn off the FILTER indicator How to Turn Off FILTER Indicator Press RESET button on the indoor unit NOTE If RESET button is pushed while the FILTER indicator is not lit the indoor unit will start the automatic operation When you want a temporary operation while the FILTER lamp lights press RESET button to turn off the FILTER lamp 15 FILE NO SVM 08029 FILE NO SVM 08029 7 7 Auto Restart Function This indoor unit is equipped with an automatic restarting function which
58. ttings of indoor unit and remote control are different There is no relation between A setting B setting and A room B room when connecting the piping and cables Remote control A B selection gt To separate using of remote control for each indoor unit in case of 2 air conditioners are installed nearly Remote Control B Setup 1 Press RESET button on the indoor unit to turn the air conditioner ON 2 Point the remote control at the indoor unit 3 Push and hold CHK button on the Remote Control by the tip of the pencil 00 will be shown on the display 4 Press MODE during pushing CHK B will show on the display and 00 will disappear and the air conditioner will turn OFF The Remote Control B is memorized NOTE 1 Repeat above step to reset Remote Control to be A 2 Remote Control A has not A display 3 Default setting of Remote Control from factory is A AL em m a hc S 31 8 7 Others 8 7 1 Gas leak test the indoor unit Valve cover n o DR IP Electric parts cover Vq aa Fig 8 7 1 Check places for the outdoor unit e Check the flare nut connections valve stem cap connections and service port cap connections for gas leak with a leak detector or soap water 8 7 2 Test operation To switch the TEST RUN COOL mode press RESET button for 10 sec The beeper will make a short beep
59. xing screws U groove FILE NO SVM 08029 Remarks FILE NO SVM 08029 10 2 Outdoor Unit Part name Procedures Remarks Common 1 Detachment Upper cabinet CR TIN procedure 1 Stop operation of the air conditioner and a turn off the main switch and breaker of the s cover air conditioner Remove the valve cover ST1T 4 x 10 2 1 pc e After removing screw remove the valve cover pulling it downward Remove the wiring cover ST1T 4 x 100 2 pcs and then remove the power cord connecting cable and cord clamp ST2T 4 x 162 pcs Remove the upper cabinet ST1T 4 x 102 5 pcs e After removing screws remove the upper cabinet pulling it upward Valve cover 2 Attachment Upper cabinet Attach the upper cabinet ST1T 4 x 102 5 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 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 10 1 pc 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 Front cabinet Detachment Perform work of i
60. y connected the outdoor unit will not operate normally or OPERATION lamp and TIMER lamp will blink 5Hz 9 2 3 Program control The microcontroller operates as shown in Table 9 2 1 to control the air conditioner If there are any opera tional problems check whether or not the problems correspond to Table 9 2 1 If they correspond to the Table they are not problems with the air conditioner but they are indispensable operations to control and maintain the air conditioner properly Table 9 2 1 Operation of air conditioner When the main power supply is turned on the OPERATION lamp on the indoor unit blinks Descriptions The OPERATION lamp blinks to indicate that power is turned on If the button is pressed the lamp stops blinking The indoor fan motor speed does not change in the Dry operation The indoor fan motor speed is automatically controlled in the Dry operation the room temperature is in the range that the compressor is turned off The compressor is not turned off even though The compressor has a function that it is not turned off for 3 minutes after it is turned on even though the room temperature is in the range that the compressor is turned off though the thermo control is operated in the Dry operation The compressor is not turned on and off even In the Dry operation the compressor is turned on and off automatically at the regular intervals independent of the thermo control

AIR CONDITIONER - AHI

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