Toshiba RAS-M10SMUCV-E Service Manual Download Page 17

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5. REFRIGERATING CYCLE DIAGRAM

5-1. Indoor Unit

Indoor unit

TCJ sensor

Air heat

exchanger

TC sensor

Distributor
(Strainer
incorporated)

Refrigerant pipe
at liquid side
Outer diameter Ø6.4

Refrigerant pipe
at gas side
Outer diameter A

Outer diameter A

Ø9.52

Ø12.7

To outdoor unit

RAS-M10SMUV-E, RAS-M10SMUCV-E

RAS-M13SMUV-E, RAS-M13SMUCV-E

RAS-M16SMUV-E, RAS-M16SMUCV-E

Heating time
Cooling time

For the outdoor unit, refer to the Service Manual of the combined outdoor unit.

Summary of Contents for RAS-M10SMUCV-E

Page 1: ... A06 015 PRINTED IN JAPAN Apr 2007 ToMo SERVICE MANUAL AIR CONDITIONER SPLIT TYPE INDOOR UNIT Heat Pump Model Cooling Only Model RAS M10SMUV E RAS M10SMUCV E RAS M13SMUV E RAS M13SMUCV E RAS M16SMUV E RAS M16SMUCV E ...

Page 2: ...OCK DIAGRAM 20 8 1 Indoor Control Circuit 20 9 OPERATION DESCRIPTION 21 9 1 Outline of Air Conditioner Control 21 9 2 Operation Description 22 9 3 Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo off Side in Heating Operation 37 9 4 Remote Controller 38 10 INSTALLATION MANUAL 40 Accessory parts and Parts to be procured locally 40 1 PRECAUTIONS FOR SAFETY 41 2 SELECTION O...

Page 3: ...installation tools are different from those used for the conventional refrigerant units Accordingly special tools are required for the new refrigerant R410A units For connecting pipes use new and clean piping materials with high pressure fittings made for R410A only so that water and or dust does not enter Moreover do not use the existing piping because there are some problems with pressure fittin...

Page 4: ...a qualified electrician in accordance with the Installation Manual Make sure the air conditioner uses an exclusive circuit An insufficient circuit capacity or inappropriate installation may cause fire When wiring use the specified cables and connect the terminals securely to prevent external forces applied to the cable from affecting the terminals Be sure to provide grounding Do not connect ground...

Page 5: ...CV E RAS M18GACV E RAS 3M18SACV E RAS 3M23GACV E RAS 4M23SACV E RAS 4M27GACV E Capacity rank of 4 way Air Discharge Cassette 16 class 13 class 10 class Conditions of combination Combination unavailable None None Combination unavailable None Restrict the max pipe length 70m to 50m Combination available Combination unavailable This Service Manual describes about 4 way Air Discharge Cassette indoor u...

Page 6: ...able ceiling height Minimun m of indoor unit Maximum m Usable temperature range Cooling C Heating C Wireless remote controller Batteries Indoor unit Remote controller holder Accessory Mounting screw Owner s manual Installation manual Panel Installation manual Mounting screw RAS M10SMUV E RAS M13SMUV E RAS M16SMUV E RB B11MC W E 1 phase 50Hz 220 to 240 V 60Hz 220 V 220 230 240 220 230 240 220 230 2...

Page 7: ...g height Minimun m of indoor unit Maximum m Usable temperature range Cooling C Wireless remote controller Batteries Indoor unit Remote controller holder Accessory Mounting screw Owner s manual Installation manual Panel Installation manual Mounting screw RAS M10SMUCV E RAS M13SMUCV E RAS M16SMUCV E RB B11MC W E 1 phase 50Hz 220 to 240 V 60Hz 220 V 220 230 240 220 230 240 220 230 240 0 21 0 20 0 19 ...

Page 8: ...e pressure in the refrigeration cycle may become abnormally high so that a rupture or 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...

Page 9: ...re that water or dust does not enter the pipe interior that no other oil than lubricating oils used in the installed air water heat pump is used and that refrigerant 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 pro...

Page 10: ...o 2 5 Table 3 2 4 Dimensions related to flare processing for R22 Table 3 2 5 Flare and flare nut dimensions for R410A Nominal diameter 1 4 3 8 1 2 5 8 Outer diameter mm 6 35 9 52 12 70 15 88 Thickness mm 0 8 0 8 0 8 1 0 A mm Flare tool for R410A clutch type 0 to 0 5 0 to 0 5 0 to 0 5 0 to 0 5 Nominal diameter 1 4 3 8 1 2 5 8 Outer diameter mm 6 35 9 52 12 70 15 88 Thickness mm 0 8 0 8 0 8 1 0 A mm...

Page 11: ... designated by manufacturers Table 3 2 7 shows reference values NOTE When applying oil to the flare surface be sure to use oil designated by the manufacturer If any other oil is used the lubricating oils may deteriorate and cause the compressor to burn out Table 3 2 7 Tightening torque of flare for R410A Reference values Nominal diameter 1 4 3 8 1 2 5 8 3 4 Outer diameter mm 6 35 9 52 12 70 15 88 ...

Page 12: ... refrigerant charging Refrigerant cylinder Leakage detector Charging cylinder Usage Pipe flaring Flaring by conventional flare tool Connection of flare nut Evacuating refrigerant charge run check etc Vacuum evacuating Refrigerant charge Refrigerant charge Gas leakage check Refrigerant charge R410A air water heat pump installation Existence of new equipment for R410A Yes Yes Yes Yes Yes Yes Yes Yes...

Page 13: ...and the connecting port of the electronic balance and charge liquid refrigerant Water heat exchanger unit Outdoor unit Opened Opened Refrigerant cylinder with siphon Check valve Open close valve for charging Electronic balance for refrigerant charging Opened Closed Service port 3 4 Recharging of Refrigerant When it is necessary to recharge refrigerant charge the specified amount of new refrigerant...

Page 14: ... 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 adhe...

Page 15: ...fore use a flux which does not contain chlorine 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 3 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 ...

Page 16: ...square hole 150 diam Bottom face of ceiling Bottom face of ceiling Refrigerant pipe Gas 12 7 diam RAS M16SMUV E RAS M16SMUCV E 9 5 diam RAS M10SMUV E M13SMUV E RAS M10SMUCV E M13SMUCV E Refrigerant pipe Liquid 6 4 diam 268 27 63 134 145 5 220 5 1000 or more 1000 or more Obustacle 1000 or more 15 or more 15 or more Drain up standing up size Note As ABS is used for the drain discharge port of the ma...

Page 17: ...nt pipe at liquid side Outer diameter Ø6 4 Refrigerant pipe at gas side Outer diameter A Outer diameter A Ø9 52 Ø9 52 Ø12 7 To outdoor unit To outdoor unit RAS M10SMUV E RAS M10SMUCV E RAS M13SMUV E RAS M13SMUCV E RAS M16SMUV E RAS M16SMUCV E Heating time Cooling time For the outdoor unit refer to the Service Manual of the combined outdoor unit ...

Page 18: ...less unit assembly Indoor unit earth screw Outdoor unit earth screw RY700 Fuse F301 250V T3 15A DC20V DC15V DC12V DC 7 V 220 240V 50Hz 220V 60Hz CN33 WHI 5 6 4 3 2 1 4 3 2 1 2 1 CN60 WHI CN08 WHI HA CN64 GRN CN201 BLU 1 1 3 3 5 5 CN333 WHI CN68 BLU CN67 BLK P01 WHI BLK BLK RED 1 1 2 3 4 4 5 5 1 3 1 3 1 3 1 3 5 5 CN334 WHI 1 1 2 2 3 3 4 4 5 5 6 6 CN202 WHI CN34 RED CN104 YEL CN102 RED TC 1 1 2 2 CN...

Page 19: ...motor for indoor Thermo sensor TA sensor Heat exchanger sensor TCJ sensor Heat exchanger sensor TC sensor Float switch Drain pump Type SWF 230 60 1R 155 mm Ø6 mm 1500 mm Ø6 mm 1400 mm FS 0218 103 ADP 1409 Specifications Output Rated 60 W 220 240 V 10 kΩ at 25 C 10 kΩ at 25 C 10 kΩ at 25 C ...

Page 20: ...synchronous signal input circuit Serial send receive circuit Run Warning Ready Thermo ON Cool Heat Fan Outside output Driver CPU TC sensor TCJ sensor Float input Louver motor Drain pump Indoor fan motor Outdoor unit 1 2 3 1 2 3 Sensor display P C board MCC 5053 Ceiling panel CPU EEPROM Power circuit DC280V 220 240V 50Hz 220V 60Hz DC12V DC5V ...

Page 21: ...and signal Serial signal from the indoor unit controller the outdoor unit performs its role Compressor operation control Operation control of outdoor fan motor P M V control 4 way valve control Operations followed to judgment of serial signal from indoor side Detection of inverter input current and current release operation Over current detection and prevention operation to IGBT module Compressor ...

Page 22: ...29 6 After heat elimination 29 7 Louver control 30 1 Louver position 30 2 Cold draft preventive control 30 8 ECO operation 31 9 Hi power operation 31 10 Temporary operation 31 11 Forced operation stop switch 32 12 Indoor fan ON output 33 13 Select switch on remote controller 34 14 Auto restart function 35 15 High ceiling select switch 35 16 Setting temperature correction switch 36 9 3 Intermittent...

Page 23: ...t Control contents of remote controller ON OFF Operation select COOL HEAT AUTO DRY Temperature setup Air direction Swing Air volume select AUTO LOW LOW MED MED HIGH ECO ON timer setup OFF timer setup High power Indoor unit control Command signal generating function of indoor unit operation Calculation function temperature calculation Activation compensation function of indoor fan Cold draft preven...

Page 24: ...r unit control Sending of operation command signal Outdoor unit control 3 Cooling Heating operation The operations are performed in the following parts by controls according to cooling heating conditions 1 Receiving the operation ON signal of the remote controller the cooling or heating operation signal starts being transferred from the indoor controller to the outdoor unit 2 At the indoor unit si...

Page 25: ...mode COOL HEAT reselect an operation mode 5 DRY operation DRY operation is performed according to the difference between room temperature and the setup temperature as shown below In DRY operation fan speed is controlled in order to prevent lowering of the room temperature and to avoid air flow from blowing directly to persons 1 Detects the room temperature Ta when the DRY operation started 2 Start...

Page 26: ... speed Air flow rate rpm m3 h 650 590 650 590 650 590 630 570 600 540 570 500 550 480 530 460 500 430 480 410 450 380 370 290 350 270 350 270 350 270 RAS M13SMUV E RAS M13SMUCV E Fan speed Air flow rate rpm m3 h 680 620 680 620 680 620 630 570 600 540 590 530 550 480 530 460 500 430 480 410 450 380 370 290 350 270 350 270 350 270 RAS M16SMUV E RAS M16SMUCV E Fan speed Air flow rate rpm m3 h 720 66...

Page 27: ...utes passed after operation start and room temp is 3 C or lower than set temp Room temp Set temp 4 C In stability When 12 to 25 minutes passed after operation start and room temp is higher than set temp 3 C When 25 minutes or more passed after operation start Room temp Set temp 3 5 C Fan speed AUTO Basic fan control No limitation while fan speed MANUAL mode is in stability A When Tsc 24 A is 24 an...

Page 28: ...C the compressor speed is kept Q zone When temperature of the indoor heat exchanger drops in the range from 51 C to under 56 C the compressor speed is kept Q zone 2 When temperature of the indoor heat exchanger rises to 56 C or higher the compressor speed is reduced P zone 3 When temperature of the indoor heat exchanger does not rise to 53 C or when it drops below to 51 C the capacity control oper...

Page 29: ...verflow detection ON ON CLOSE OPEN CLOSE ON ON OFF ON Overflow stops 1 2 30 2 2 30 Drain level is checked by float switch If the float switch is actuated OPEN stop operation of the outdoor unit and operate the drain pump exert to drain out In fan only Cooling only model heating operation Heat pump model only and even in stoppage but while float switch is actuated drain pump is ON Operation Over fl...

Page 30: ...e remote controller during heating or fan operation moves the louver The louver operates in the range between lower limit angle 36 and upper limit angle 92 Pushing SWING button of the remote controller during operation of the air conditioner swings the louver The louver swings in the range between lower limit angle 36 and upper limit angle 92 Even during cooling or drying operation When pushing SW...

Page 31: ...emporary operation Description Pushing HiPOWER button of the remote controller controls the following items 1 During cooling operation Set temperature Controls with temperature 1 0 C lower than usual No of fan revolutions Controls with No of revolutions 1 tap higher than usual Upper limit is H tap 2 During heating operation Set temperature Controls with temperature 2 0 C higher than usual No of fa...

Page 32: ...ow opens CN64 is short circuited and the indoor unit is operating the indoor unit stops the operation If a signal is sent from the remote controller while the window opens CN64 is short circuited the indoor unit ignores the signal and does not operate In this case the receiving sound pip goes off for five times While the window opens all the operation modes are not used If closing the window again...

Page 33: ...hen thermo off occurs during heating operation the indoor fan may perform ON OFF operation In this case the output keeps ON status The lead wire which connects the indoor P C board and the relay should be long within 2m If using a longer wire or if not using a relay a malfunction may occur The lead wire length 500mm attached with connector which connects it to CN60 is prepared as article sold sepa...

Page 34: ...controller also set to B At the factory the remote controller selection is set to A on all the indoor units There is no A setting display START STOP PRESET AM MODE AUTO FAN ECO TIMER Hi POWER SWING MEMO FIX FILTER RESET CLOCKCHECK ON OFF SET CLR When it is B B is displayed When it is A none is displayed Push the CHECK point and MODE button at once B 2 Setting the unit Remove the cover of the elect...

Page 35: ... M16SMUCV E Possible installed ceiling height Up to 2 7 m Up to 3 5 m Model RAS Standard Factory setting High ceiling 1 High ceiling 2 M10SMUV E M13SMUV E M16SMUV E M10SMUCV E M13SMUCV E M16SMUCV E 2 5 to 2 7 m 2 5 to 2 7 m 2 5 to 2 9 m 2 9 to 3 2 m 3 2 to 3 5 m SW02 No 1 No 2 OFF OFF ON OFF ON ON How to set the High ceiling switch Remove the cover of the electric parts box by taking off the mount...

Page 36: ...the hinge There are the selector switches SW01 on the P C board of the electric parts box The setting of the detection temperature can be changed by combining No 1 to No 4 switches of the selector switches SW01 Adjust the setting of the detection temperature according to the following table No 1 No 2 No 3 No 4 COOL DRY HEAT C C OFF OFF OFF OFF 2 2 ON OFF OFF OFF 2 4 OFF ON OFF OFF 2 2 ON ON OFF OF...

Page 37: ...om temperature reached the setup temperature in one room and thermo off occurred the following operations start Refer to the figure below 1 The indoor unit of the room A room in which thermo off did not occur starts a continuous operation with the setup number of revolution 2 The indoor unit of the room B room in which thermo off occurred starts intermittent operation of the indoor fan The indoor ...

Page 38: ...the louver swinging A receiving beep is heard 6 Set louver button FIX Push this button to adjust the air flow direction A receiving beep is heard 7 Off timer button OFF Push this button to set the OFF timer 8 On timer button ON Push this button to set the ON timer 9 Reserve button SET Push this button to reserve time settings A receiving beep is heard 10 Cancel button CLR Push this button to cance...

Page 39: ...nd clock time display The time set for timer operation or clock time is indicated The present time is always indicated except for TIMER operation 6 High power display Indicates when the High power operation starts Push the Hi POWER button to start and push it again to stop the operation 7 P MEMORY display Flashes for 3 seconds when the MEMO button is pushed during operation P mark is indicated whe...

Page 40: ...ion of drain connecting section For hanging down unit For connecting drain pipe For adjusting core out of drain pipe For sealing of wire connecting port For sealing of wire connecting port Be sure to hand over to customers Separate sold parts Part name Ceiling panel Q ty 1 Shape Usage Model RB B11MC W E H Parts to be procured locally Connecting pipe Liquid side 6 4 mm diam Nominal diam 1 4 thick 0...

Page 41: ...nsure pipes are clean and ensure contaminants do not enter the pipes as the system is affected by impurities such as water oxide scales dirt oil etc Do not use existing pipe work from previous installation as this will cause problems due to pressure resistances and impurities within the pipe CAUTION To Disconnect the Appliance from Main Power Supply A switch or circuit breaker that can disconnect ...

Page 42: ...ith fire noxious gases may be generated After the installation work confirm that refrigerant gas does not leak If refrigerant gas leaks into the room and flows near a fire source such as a cooking range noxious gases maybe generated Electrical work must be performed by a qualified electrician in accordance with the Installation Manual Ensure the power supply to the air conditioner is exclusive to ...

Page 43: ...alled horizontally Place where a sufficient servicing space can be ensured for safety maintenance and check Place where drained water will not cause any problem Avoid installing in the following places Place exposed to air with high salt content seaside area or place exposed to large quantities of sulfide gas hot spring Should the unit be used in these places special protective measures are needed...

Page 44: ...ht in the models RAS M10SMUV E M10SMUCV E M13SMUV E and M13SMUCV E if it is set over 2 7 m the hot air is difficult to reach the floor How to set the High ceiling switch Remove the cover of the electric parts box by taking off the mounting screws 3 positions and pushing the hooking section The cover of the electric parts box remains hanged to the hinge There are the selector switches SW02 on the P...

Page 45: ... as packaged from the factory wherever possible If carrying in the indoor unit unpacked by necessity be sure to use buffering cloth etc to prevent damaging the unit To move the indoor unit hold the hanging brackets 4 positions only Do not apply force to other parts refrigerant pipe drain pan foamed parts or resin parts etc To be carried by two or more people Do not strap the unit in positions othe...

Page 46: ...rigerant pipe Gas 12 7 diam RAS M16SMUV E RAS M16SMUCV E 9 5 diam RAS M10SMUV E M13SMUV E RAS M10SMUCV E M13SMUCV E Refrigerant pipe Liquid 6 4 diam 268 27 63 134 145 5 220 5 1000 or more 1000 or more Obustacle 1000 or more 15 or more 15 or more Drain up standing up size Note As ABS is used for the drain discharge port of the main unit the vinyl chlor paste cannot be used Use the flexible hose Ban...

Page 47: ...ixing screws M5 16L 4 off Screw pattern to the ceiling panel hanging brackets of the indoor unit When creating the opening ensure it is as per the outer dimensions of the supplied pattern Opening a ceiling and installation of hanging bolts Treatment of ceiling The ceiling differs according to the structure of the building For details consult your architect In the process after the ceiling panels h...

Page 48: ...eiling panel Sold separately Install the ceiling panel after completion of the installation of the indoor unit including all piping and wiring Install the ceiling panel as per the supplied Installation Manual Check the installation dimensions of the indoor unit and the ceiling opening are correct and then install REQUIREMENT Ensure the ceiling panel is mated to the ceiling surface or the indoor un...

Page 49: ...ecting port ensure that the supplied flexible hose is fitted Adhesive agent cannot be used for the pipe connecting port hard socket on the indoor unit Be sure to use the supplied hose band for fixing otherwise there is a risk of damage or water leakage from the drain pipe connecting port Connection of flexible hose Insert the soft socket of the supplied flexible hose into the connecting port of th...

Page 50: ...unds from the drain pump Ensure drainage is checked during cooling mode When the electric work has finished Before installing the ceiling panel pour water as shown in the following figure check water drains from the drain pipe connecting port Transparent in COOL mode and then check there are no water leaks from the drain pipes When the electric work has not finished Pull out the float switch conne...

Page 51: ...ulation material for the drain connecting part leaving no clearance CAUTION Ensure water is poured slowly If water is poured vigorously it is scattered inside of the indoor unit resulting in a cause of unit trouble Flexible hose Hose band Attached heat insulator Heat insulator to be procured locally Hard vinyl chloride pipe Water 1500cc to 2000cc Insert the leading part of the hose between the hea...

Page 52: ...lare nut Externally threaded side Internally threaded side Use a wrench to secure Use a torque wrench to tighten Flaring diam meter size A Unit mm Outer diam of copper pipe 6 4 9 5 12 7 A R410A R22 9 1 9 0 13 2 13 0 16 6 16 2 In case of flaring for R410A with the conventional flare tool pull it out approx 0 5 mm more than that for R22 to adjust to the specified flare size The copper pipe gauge is ...

Page 53: ...that the compound pressure gauge reading is 101 kPa 76 cmHg 5 Close the low pressure side valve handle of gauge manifold 6 Open fully 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 Packed valve handling precautions Open the valve stem until it touches the stopper Once it is in contac...

Page 54: ...wer and inter connecting wires when peeling them Be sure to comply with local regulations on running the wire from outdoor unit to indoor unit size of wire and wiring method etc Use the power cord and Inter connecting cable of specified thickness type and protective devices required REQUIREMENT Appliance shall be installed in accordance with national wiring regulations For wiring of power supply o...

Page 55: ...lation material seal the pipe connecting port Otherwise dewing may be caused Mount the cover of the electric parts box without pinching wires Mount the cover after cabling on the ceiling panel P C board Cover of electric parts box Screw Push Screws Electric parts box Hooking section Thermal insulation to wiring connecting port Adhered surface Heat insulator A Notched section Power supply terminal ...

Page 56: ... ground wires to the corresponding terminals 5 Fix the wires with cord clamp 6 Fix cover of the parts box and the terminal block surely with the fixing screws Make a loop on the wire for margin of the length so that the electric parts box can be taken out during servicing Connecting wire Earth line 10 50 10 70 1 2 3 1 2 3 Indoor side Outdoor side Indoor Outdoor connecting wires 1 1 L N 2 2 3 3 NOT...

Page 57: ...box No 4 of the selector switches SW02 is provided to select the switch of the remote controller Select ON of No 4 of the selector switches SW02 OFF A setting ON B setting Check whether the changed remote controller can operate the indoor unit or not 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 pow...

Page 58: ...n the P C board of the electric parts box The setting of the detection temperature can be changed by combining No 1 to No 4 switches of the selector switches SW01 Adjust the setting of the detection temperature according to the right table Factory setting ON ON SW02 6H 1 ON 6H 2 3 4 B SW01 TS ADJUST No 1 No 2 No 3 No 4 COOL DRY HEAT C C OFF OFF OFF OFF 2 2 ON OFF OFF OFF 2 4 OFF ON OFF OFF 2 2 ON ...

Page 59: ...ection Flare nut connections Outdoor unit Flare nut connections Indoor unit 10 INSTALLATION SERVICING TOOLS Tools Tools Gauge manifold Charge hose Electronic balance for refrigerant charging Torque wrench nominal diam 1 2 5 8 Tools Flare tool clutch type Gauge for projection adjustment Vacuum pump adapter Gas leakage detector Applicable to R22 model o o o Newly prepared They are special requiremen...

Page 60: ...sh Air inlet grille Button 1 Insert 2 Insert in the louver sagging down the center downward 11 MAINTENANCE Prior to maintenance ensure the power supply is turned off Cleaning of air outlet louver The air outlet louver can be removed to clean if necessary 1 Remove the air outlet louver Holding both ends of the air outlet louver remove it by sagging the center downwards 2 Clean the air outlet louver...

Page 61: ... stops approx 30 seconds after operation started and then compressor motor speed increases again approx 30 seconds after The set value of the remote control should be below the room temperature In AUTO mode the operation mode is changed In HEAT mode the compressor motor speed does not increase up to the maximum speed or decreases before the temperature arrives at the set temperature Cool Dry or He...

Page 62: ... D E Check code Block display OPERATION Green Flashing display 1 Hz OPERATION Green Flashing display 5 Hz OPERATION Green TIMER Yellow Flashing display 5 Hz OPERATION Green Flashing display 5 Hz OPERATION Green TIMER Yellow Flashing display 5 Hz Description for self diagnosis Power failure when power is ON Protective circuit operation for indoor P C board Protective circuit operation for connectin...

Page 63: ...eck is displayed in the indication part of the remote controller Push toward the indoor unit one by one If it is normal the receiving sound Beep is heard every pushing it and check code in the indication part of the remote controller changes The timer lamp of the air conditioner flashes 5 times for 1 second Check all of 35 check codes to Push to return to the objective code if passed If a trouble ...

Page 64: ... continues Operation continues All off Operation continues Outdoor units stop Operation continues Operation continues Condition Displayed when error is detected Displayed when error is detected Displayed when error is detected Displayed when error is detected Displayed when error is detected Displayed when error is detected Flashes when trouble is detected on return serial signal and normal status...

Page 65: ...ion of refrigera tion cycle Check installation condition Short circuit of outdoor diffuser Block Outdoor P C board Not displayed Outdoor P C board Others including compressor Operation of diagnosis function Cause of operation Inverter over current protective circuit operates Short time Position detect circuit error or short circuit between windings of compressor Current detect circuit error Being ...

Page 66: ...ad wires of terminal block Correct wiring Remote controller is defective Refer to 3 Troubleshooting for remote controller Parts of a power supply circuit defective Unit operates normally Replace main P C board Turn off power supply once and 5 second later turn it on again Microcomputer is defective Item by symptoms Operation Check Item Considerable principle cause Measures Is OPERATION indicator f...

Page 67: ...he fan slowly with hands and check the pin voltage swings between 0 to 5V voltage Between and 5V Check indoor P C board MCC 5056 Defect Replace Remove connectors CN333 and CN334 of indoor unit P C board MCC 5056 Replace indoor fan motor Replace indoor fan motor Replace indoor fan motor YES NO NO NO NO NO YES YES YES YES Turn off the power Is resistance value of fan motor connector CN333 at motor s...

Page 68: ...TOP button Press RESET button on remote controller with tip of pencil Does LED of the sensor display panel ON Is transmission mark indicated Is transmission mark indicated Does indoor unit beep and operate Is there any thyristor fluorescent light nearby Is receiver on indoor unit exposed to direct sunlight Does indoor unit operate when moving remote controller near receiver or indoor unit Does ind...

Page 69: ...ed 2 minutes and 30 seconds after starting of the operation Be sure to prepare a diode for judgment Normal time Voltage swings between DC15 and 60V Inverter Assembly check Abnormal time Voltage does not vary 2 Overflow detection error Ob error Correct connection of connector Check drain pipe etc Check and correct cabling wiring Check indoor P C board MCC 5056 Defect Replace Check indoor P C board ...

Page 70: ...cautions 1 When removing the electric parts box or the P C board be sure to shut off the power supply breaker 2 When removing the P C board hold the edge of the P C board and do not apply force to the parts 3 When connecting or disconnecting the connectors on the P C board hold the whole housing Do not pull at the lead wire 2 Inspection procedures 1 When the P C board is judged to be defective che...

Page 71: ... 71 11 7 P C Board Layout ...

Page 72: ... A B setting Description Match to set up contents of P C board before replacement Remarks OFF Auto restart is invalid ON Auto restart is valid OFF Remote controller A setting ON Remote controller B setting Status at shipment from factory All ON All OFF OFF OFF Jumper setup 1 J800 J801 J802 J803 For the following models set up jumpers according to the table Provided Original None Cut Model name Par...

Page 73: ... hooks 2 positions of the suction grille to inner side and then hang down the suction grille 2 Take off the strap that connects the panel and the suction grille and then lift up shaft of the suction grille to remove the suction grille 2 Attachment 1 Hook shaft of the suction grille to the panel 2 Hook strap of the suction grille to the original position of the panel 3 Close the suction grille and ...

Page 74: ...el 2 Turn screws 4 positions of the suction port corner counterclockwise until bump between adjust corner cover and panel disappears NOTE When you work keep the torque at below 12N m Do not use an electric screwdriver otherwise the mechanism of adjust corner cover may be damaged and not be removed 1 Detachment 1 Perform works of procedure 1 1 2 1 and 3 1 2 Remove the flap connector CN33 White 5P c...

Page 75: ...res and the remote controller Be careful that other sensor does not fall out Adhere on the transformer Cord clamp Arrow view E E No 5 Part name Control P C board Procedure 1 Detachment 1 Perform works of procedure 1 1 and 2 1 2 Remove the connectors connected from the control P C board to other parts CN33 Flap motor 5P White CN34 Float switch 3P Red CN68 Drain pump 3P Blue CN67 Terminal block of p...

Page 76: ...perform wiring same as those before remov ing If there is incomplete drawing of wire short or water leakage of the parts may be caused Remarks Details of piping cover assembly and mounting Details of sensor lead wire drawing Details of fan motor lead wire drawing As shown in the figure hook the sensor lead wires to claw of the piping cover and then pass them so that they are stored in the groove A...

Page 77: ...as original before being removed NOTE Pinch lead wire of the drain pump and float switch with lead wire fixing claws of the bell mouth and perform wiring along the guide 1 Detachment 1 Perform work of procedure 7 1 2 Take off the nut M6 nut 1 pc of the turbo fan NOTE Use a box wrench for attachment and detachment of the turbo fan If using a monkey wrench etc the other parts may be damaged in work ...

Page 78: ...of the fan motor fixing nuts otherwise contact or damage for other parts may be caused 2 Attachment 1 Mount the fan motor with the fixing nuts NOTE Tightening torque of turbo fan 5 9 0 6N m Apply looseness preventing agent as paints to the nut after tightening 2 Attach the fan motor lead wire holder NOTE For the fan motor lead wire fix the lead wire holding bracket along concave part of the ceilin...

Page 79: ...er of the drain cap and then insert the drain cap until it strikes on the socket of the drain pan 2 Draw each lead wire to the correct positions and then insert the drain pan into the main unit NOTE Draw lead wires of the drain pump and the float switch along the guide of the cabinet Insert the drain pan along the guides of sensors TC1 TC2 TCJ and PMV lead wire The drain pan and each lead wire are...

Page 80: ...hile holding the heat exchanger remove fixing band and fixing screws Ø4 10 3 pcs and then remove the heat exchanger 2 Attachment 1 Mount parts in order heat exchanger fixing band piping cover drain pan bell mouth electric parts box as original NOTE Arrange wires as original 2 Attach the removed connectors and wires as original 3 Connect the refrigerant pipe as original and then perform vacuuming R...

Page 81: ... Filter 304 43497012 Screw 305 43100322 Cover Panel Ass y 306 43107259 Grille Catch 307 43122089 Cover Joint For Joint 308 43022451 Cover Joint For Motor 309 43122091 Joint Kit A Location Part No Description No 310 43122092 Joint Kit B 311 43122093 Louver 312 43107261 Outlet Air Form 313 43100412 Panel 314 43107262 Fix Motor 315 43107263 Fix Motor 316 43160580 Lead Motor 317 4306S940 P C Board Ass...

Page 82: ...E 202 218 220 213 215 230 225 226 222 237 236 235 209 RAS M10SMUV E RAS M13SMUV E RAS M10SMUCV E RAS M13SMUCV E 210 RAS M16SMUV E RAS M16SMUCV E 203 205 238 240 231 201 228 221 223 234 215 211 217 214 242 239 233 247 219 216 212 211 230 227 224 213 220 14 2 4 way Air Discharge Cassette Type ...

Page 83: ...43049776 Socket 1 2 IN 218 43047609 Bonnet 3 8 IN 219 43147195 Bonnet 1 2 IN 220 43049697 Bonnet 1 4 IN 221 43170244 Hose Drain 222 43079249 Band Hose 223 43060029 Filter Noise 224 43163052 Holder Lead Fan Motor 225 43119482 Cover Ass y Body 226 43170248 Hose Drain 227 43119483 Cover Pipe 228 43097212 Nut 230 43019904 Holder Sensor 231 43179135 Band Hose 233 43139137 Rubber Cushion 234 43162056 Co...

Page 84: ...ation Part No Description No 403 4306S935 P C Board Ass y MMC 5056 220V 240V 404 43160565 Terminal Block 3P AC250V 20A Location Part No Description No 401 43050425 Sensor Ass y Service TC TCJ F6 402 43050426 Sensor Service TA ...

Page 85: ... the number of high concentration buildings however the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space individual control energy conservation by curtailing heat and carrying power etc Most importantly the multi air conditioner system is able to replenish a large amount of refrigerant compared with conventional individual air co...

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