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Service Manual

Room Air Conditioners

Contents

Features .......................................................... 1

Functions ................................................... 2 – 4

Product Specifications ............................... 5 – 8

Dimensions .............................................. 9 – 10

Refrigeration Cycle Diagram ......................... 10

Block Diagram ............................................... 11

Wiring Diagram .............................................. 12

Operation Details ................................... 13 – 22

Installation Information .......................... 23 – 24

3-way Valves ......................................... 25 – 31

Servicing Information ............................. 32 – 35

Troubleshooting Guide .......................... 36 – 37

Technical Data ....................................... 38 – 40

Exploded View ......................................... 41, 43

Replacement Parts List ........................... 42, 44

Electronic Parts List ............................... 45 – 46

CS-A181KR / CU-A181KR
CS-A241KR / CU-A241KR

ORDER NO. MAC9903022C3

 

1999 Matsushita Air-Conditioning Corp. Sdn. Bhd.

(183914D)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.

Untitled-5

6/10/00, 3:21 PM

1

Содержание CS-A181KR

Страница 1: ... Information 23 24 3 way Valves 25 31 Servicing Information 32 35 Troubleshooting Guide 36 37 Technical Data 38 40 Exploded View 41 43 Replacement Parts List 42 44 Electronic Parts List 45 46 CS A181KR CU A181KR CS A241KR CU A241KR ORDER NO MAC9903022C3 1999 Matsushita Air Conditioning Corp Sdn Bhd 183914D All rights reserved Unauthorized copying and distribu tion is a violation of law Untitled 5 ...

Страница 2: ...by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death High Efficiency High Efficiency Airflow Circuit Compact Design Removable and Washable Front Panel Auto Restart after Power Failure Long Piping up to 25m Deodo...

Страница 3: ...DE TIME Time Timer Setting Hours and minutes setting Clock Setting Current time setting Sleep Mode Operation OFF ON SLEEP Indoor Fan Speed Selection FAN SPEED h j k Low Speed l h j k Medium Speed lll h j k High Speed lllll AUTOFAN Automatic Fan Speed SWING Automatic Airflow Direction Control MANUAL Airflow Direction Manual Control Airflow Direction Control 24 hour OFF ON Real Timer Setting ON TIME...

Страница 4: ...airflow Airflow Direction Control The indoor fan stops until the indoor heat exchanger temperature over 30 C The indoor fan operates at SLo and Lo when indoor heat exchanger temperature reaches 30 C 42 C Hot start is completed when indoor heat exchanger reaches 42 C Auto Operation Switch Used when the remote control cannot be used AUTO OFF ON Remote Control Signal Receiving Sound Control It can be...

Страница 5: ...when outdoor temperature reaches to 31 C Lo speed when outdoor temperature reaches to 29 C For Heating Operation Hi speed when outdoor temperature reaches to 13 5 C Lo speed when outdoor temperature reaches to 15 5 C For Over heating Protection the Fan is switched ON or OFF depending on the piping temperature and the outdoor tem perature Overload Protector Inner protector Compressor Fan Motor Deic...

Страница 6: ...L liquid side 1 4 16 0 75 2 1 3 1 5 mm2 11 7 16 290 38 19 32 980 7 11 16 195 29 13 Cross flow Fan AS Glass Fiber 30 Transistor 4 poles 61 9 20 Cooling 980 Heating 980 Cooling 1 090 Heating 1 090 Cooling 1 200 Heating 1 240 Unit kW Btu h kW Btu h s h Pint h Phase V Cycle OUTLET INTAKE m3 min cfm m3 min cfm m3 min cfm m3 min cfm dB A kW A W W A inch inch inch inch mm m m inch mm inch mm inch mm lb k...

Страница 7: ...L CS A181KR Evaporator Copper Aluminium Slot Fin 2 14 21 732 294 25 4 Electronic Control P P Honeycomb µF VAC µF VAC Specifications are subject to change without notice for further improvement Unit mm cm3 g oz mm s min mm 769 2 732 9 CU A181KR Condenser Copper Aluminium Corrugated Fin 2 26 14 660 4 44 Capillary Tube SUNISO 4GDID or ATMOS M60 700 1 590 56 1 Inner Protector Cooling 690 Heating 650 C...

Страница 8: ...nion 5 8 L Half Union 1 4 G gas side 5 8 L liquid side 1 4 16 0 75 2 1 3 2 5 mm2 11 7 16 290 38 19 32 980 7 11 16 195 29 13 Cross flow Fan AS Glass Fiber 30 Transistor 4 poles 72 2 30 Cooling 1 100 Heating 1 200 Cooling 1 200 Heating 1 320 Cooling 1 320 Heating 1 410 CU A241KR TOP VIEW G 3 way valve 5 8 L 3 way valve 1 4 G gas side 5 8 L liquid side 1 4 26 31 32 685 31 1 2 800 11 13 16 300 146 66 ...

Страница 9: ...Type Row Stage FPI Size W H L µF VAC µF VAC Specifications are subject to change without notice for further improvement 769 2 732 9 CS A241KR Evaporator Copper Aluminium Slot Fin 2 14 21 732 294 25 4 Electronic Control P P Honeycomb CU A241KR Condenser Copper Aluminium Corrugated Fin 2 26 16 660 4 44 Capillary Tube SUNISO 4GDID or ATMOS M60 1 130 1 770 62 5 Inner Protector Cooling 700 Heating 649 ...

Страница 10: ...980 290 195 59 direction Air intake Air outlet direction Left piping hole Right piping hole 6 Lower piping hole 52 60 165 2 100 Approx Front View Top View Side View 48 5 39 892 49 276 7 59 5 165 100 100 Slot 2 places Slot 2 places Indoor unit external dimensions line Installation plate Left piping hole Arrow Arrow Centre Right piping hole Installation plate positioning gauge 350 7 561 13 5 Ø 70 Ø ...

Страница 11: ... 5 100cm 10cm 10cm Required space for installation Anchor bolt pitch 330 x 540 Unit mm COOLING HEATING PROCESS STRAINER 3 WAY VALVE 3 WAY VALVE LIQUID SIDE GAS SIDE INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGER EVAPORATOR SENSOR SENSOR PIPE TEMP CAPILLARY TUBE CHECK VALVE COMPRESSOR OIL SEPARATOR HEAT EXCHANGER CONDENSER 4 WAY VALVE ACCUMULATOR SUB TEMP PIPE SENSOR ONLY OIL V SENSOR INTAKE AIR TEMP INTA...

Страница 12: ...R 4 4 3 3 TRANSFORMER2 FUSE 3 15A FUSE 3 15A ZNR2 RY HOT ZNR1 COMP F M RY V RY OFF RY DEICE 2 WAY TRANSFORMER1 RY H L TRANS FORMER 4 WAY VALVE VALVE CU A241K ONLY O L P P C B RECEIVER SENSOR 6C S M INDICATORS 5C 4C SENSOR 4C ZNR3 ZNR4 3C F M ELECTRONIC CONTROLLER THERMAL FUSE 102 C Indicates the number of core wires Example 6C 6 core wires C Indicates the electronic control unit MAIN PC1 ZNR2 STEP...

Страница 13: ...C B A CN DISP WHT WHT WHT RECEIVER CONTROLLER ELECTRONIC DISPLAY LAMP CONTROL REMOTE WIRELESS BLU MAIN SW 1 2 3 4 YLW GRN AC 240 230V 50Hz RED RED RED RED BRW BLK WHT CONTROL No TRANSFORMER BLK BLK T BLK ZNR CN T WHT DEICE BLU RY HOT 3 3 1 2 4 4 CAPACITOR 4 WAY VALVE COIL TRANSFORMER1 ZNR2 COMP VLT AC WHT TRANSFORMER2 RY HOT RY V FUSE 3 15A RY DEICE RY OFF 1 SENSOR AIR TEMP PIPE TEMP SENSOR CN TH ...

Страница 14: ... automatically if it has stopped for 7 minutes even if the room temperature is below the compressor ON temperature Time Delay Safety Control 3 minutes 7 minutes Time Saved Control Anti Freezing Control If the temperature of the indoor heat exchanger falls continously below 2 C for 4 minutes the compressor turns off to protect the indoor heat exchanger from freezing The fan speed setting remains th...

Страница 15: ...n of operation d g Time Delay Safety Control waiting for 3 minutes g h 60 sec Forced Operation h o 7 min Time Saved Control q t Anti Freezing Control v y Outdoor Fan Control Indoor Fan Comp SLo SLo SLo SLo ON ON OFF stop stop stop 30 stop 30 160 1 40 40 20 2 a b c d e f g h i j k l m n o p q r s t u v w x y z Basic Time Compressor Indoor Fan Outdoor Fan Operation LED 4 Way Valve 2 Way Valve A241K ...

Страница 16: ...oor Fan Compressor and Outdoor Fan Stop for 6 minutes Once the compressor stops it will not start for 3 minutes during Cooling operation Same as Anti Freezing Control for Cooling Mode operation For Soft Dry region 6 minutes waiting is valid during compressor stops When Automatic Fan Speed is selected at Remote Control during Soft Dry Operation Fan speed rotates at SLo speed Deodorizing Control Tim...

Страница 17: ...tion q t Anti Freezing Control Operation Stop a b c d e f g h i j k l m n o p q r s t u v Basic Time Compressor Indoor Fan Outdoor Fan Operation LED 4 Way Valve 2 Way Valve A241K 1 1 1 1 6 6 6 6 4 1 Cooling ON Cooling OFF Soft Dry OFF ON 1 5 C 1 0 C SLo SLo SLo SLo SLo SLo SLo SLo SLo SLo SLo SLo 6 Intake Air Temperature Set Temp Indoor Heat Exchanger Temp 10 C 2 C Untitled 2 6 10 00 9 30 AM 16 ...

Страница 18: ...aiting 4 way Valve Control 4 way valve ON during Heating operation except deicing operation When the unit is switched to OFF during Heating operation 4 way valve stays at Heating position for 5 minutes Hot Start Control When Heating operation starts Indoor Fan will not start until the indoor heat exchanger reaches 30 C as diagram shown Hot Start is completed when indoor heat exchanger reaches 42 C...

Страница 19: ...atic Fan Speed is selected at Remote Control during heating operation Fan speed rotates in the range of Me SLo according to the heat exchanger temperature Automatic Fan Speed Mode Heating Operation Time Diagram Description of operation a c Hot start Indoor fan OFF c d Hot start Indoor fan SLo h k o s Indoor fan control controlled during thermostat OFF Blinking Operation Stop Operation or Stop SLo ...

Страница 20: ...ressor starts for 1 minutes deicing starts Deicing ends when a 12 minutes after deicing operation starts b The outdoor piping temperature rises to about 12 C After deicing operation compressor stops for 30 seconds and 4 way valve stays at cooling position for 10 seconds a Normal Deicing Time Diagram Description of operation a c Deicing operation judging condition established c f Deicing operation ...

Страница 21: ...t Judgement 4 Automatic Mode Operation a When the Automatic Mode Operation is selected the indoor fan operates at SLo fan speed for 20 second to sense intake air temperature and determine the 1st operation mode b Operation mode will be determine again after 1hour of operation if the room temperature reaches to set temperature and compressor off time is over 7 minutes 30 seconds continuously Indoor...

Страница 22: ... will be risen by 2 C at the start of operation and by 3 C one hour later The operation will stop after 8 hours When using together with the Timer the ON Timer has priority 6 Auto Restart Control If there is a power failure operation will be automatically restarted when the power is resumed It will start with previous operation mode and airflow direction Time Delay Safety Control is valid Auto Res...

Страница 23: ...with airflow direction louver Airflow Direction Manual Control When the Delayed ON Timer is set by using the remote control the unit will start operate slightly before the set time so that the room will reach nearly to the set temperature by the desired time For Cooling and Soft Dry mode the operation will start 15 minutes before the set time For Heating mode the operation will start 30 minutes be...

Страница 24: ...ted There should not be any animal or plant which could be affected by hot air discharged Keep the spaces indicated by arrows from wall ceiling fence or other obstacles Do not place any obstacles which may cause a short circuit of the discharged air If piping length is over 10m additional refrigerant should be added as shown in the table No 1 2 3 4 5 Accessories part Installation plate Installatio...

Страница 25: ...ge test remove the air filters and pour water into the heat exchanger Connecting cable 3 CORE WIRE 2 5 mm2 Locally approved cable Vinyl tape Narrow This illustration is for explanation purposes only The indoor unit will actually face a different way Air purifying filter 8 Left and right are identical Bushing Sleeve Putty Gum Type Sealer 5 cm or more 5 cm or more 100 cm or more 10 cm or more 10 cm ...

Страница 26: ...old gauge Open Connected manifold gauge Open Connected manifold gauge Open Connected manifold gauge Open Connected manifold gauge Works Shipping Evacuation Installation and Re installation Operation Pumping down Transferring Evacuation Servicing Gas charging Servicing Pressure check Servicing Gas releasing Servicing Valve cap Shaft Position Closed With valve cap Closed Clockwise Open With valve ca...

Страница 27: ...s 6 Tighten the service port caps of both the 3 way valves at a torque of 18 N m with a torque wrench 7 Remove the valve caps of both the 3 way valves Position both of the valves to open using a hexagonal wrench 4 mm 8 Mount valve caps onto both of the 3 way valves Be sure to check for gas leakage Caution If gauge needle does not move from 0 cmHg 0 MPa to 76 cmHg 0 1 MPa in step 3 above take the f...

Страница 28: ...ooling cycle and stop it when the gauge indicates 0 kg cm2 G 0 MPa If the unit cannot be operated at the cool condition weather is rather cool press the Pump Down Switch on the Indoor unit So that the unit can be operated 7 Immediately set the gas side 3 way valve to the close position Do this quickly so that the gauge ends up indicating 1 to 3 kg cm2 G 0 1 MPa to 0 3 MPa 8 Use refrigerant reclaim...

Страница 29: ...en using a hexagonal wrench 4 mm 9 Mount valve caps onto the 3 way valves Procedure 1 Connect a charging hose with a push pin to the Low and High sides of a charging set and the service port of the 3 way valve Be sure to connect the end of the charging hose with the push pin to the service port 2 Connect the centre hose of the charging set to a vacuum pump 3 Turn on the power switch of the vacuum ...

Страница 30: ...rt Confirm whether the pressure indicates more than 0 1 MPa 1 kg cm2 G 3 Connectthechargeset scentrehosetorefrigerant reclaiming equipment 4 Open the valve Low side on the charge set and loosen the hose connected with the Refrigerant Reclaiming Equipment to purge the air from the hose 5 Turnonrefrigerantreclaimingequipmenttocollect the refrigerant until the needle indicates 0 no refrigerant is rem...

Страница 31: ...e vaccuum pump to evacuate the unit Confirm that the gauge needle has moved toward 76 cmHg 0 1 MPa Apply the vacuum for approximately 1 hour vaccuum of 4 mmHg or less 3 Close the valves Low side and High side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approxi mately 5 minutes after the vacuum pump is turned off 4 Disconnect the charge hose from the v...

Страница 32: ...to open only the High side valve on the charge set to charge the system from the liquid side high presure pipe If the system cannot be charged with the specified amount of refrigerant operate the compressor until the specifiedamountcanbecharged andthenclosethevalve at the bottom of the charge cylinder 4 Immediately disconnect the charge hoses from both 3 way valve service ports Indoor unit Chargin...

Страница 33: ...ctor CN STM GREEN of stepping motor from the electronic controller Release the earthwire YELLOW GREEN fromthecontrolboard terminal and sensors from its holders Refer Fig 2 2 Remove the Control Board As shown in Fig 3 remove the 3 screws and release the tab at the top of Control Board Pull the Control Board forward slightly Caution RemovalofDischargeGrillebeforeremoving the control board is necessa...

Страница 34: ...ove the Indoor Fan Motor Loosen the Fan Mounting Screw at the junction with Cross Flow Fan Remove the screw that hold the metal plate and remove the metal plate Pull off the Bearing at the left of the Cross Flow Fan and remove the Indoor Fan motor Fig 4 Fig 7 Fan Motor Fan mounting screw Cross Flow Fan Fig 5 Fig 6 Fan Motor Metal plate Screw Bearing Untitled 3 6 10 00 3 14 PM 33 ...

Страница 35: ...t side of the evaporator 3 Pull the left side of the evaporator forward slightly and remove the cross Flow Fan B Disassembly of the parts Outdoor Unit Inspection points for the Outdoor Electronic Controller 1 The Electronic Controller Can be seen by removing thecabinetTopplateandFrontplate asshowninthe Fig 10 Screws Evaporator Fig 8 Evaporator Fig 9 Cross Flow Fan Fig 10 Electronic Controller Unti...

Страница 36: ...r units are installed in the same room in order to prevent operating errors caused by using two remote controls set up the remote control B A switch SW1 The unit is set to A when it is shipped Reset terminal Remote Control Switch By adding a jumper wire to the remote control side and a carbon resistor 1 4 W 10 kΩ to the indoor printed circuit board it is possible to select from 4 types of transmis...

Страница 37: ...ence Less than 8 C at the cooling mode Less than 14 C at the heating mode Troubleshooting Guide Condition Indoor fan speed High Outdoor temperature 35 C at the cooling mode and 7 C at the heating mode Gas pressure MPa kg cm2 G 0 4 0 6 4 6 1 5 2 1 15 21 More than 8 C 15 minutes after an operation is started at the cooling mode More than 14 C 15 minutes after an operation is started at the heating m...

Страница 38: ...ed Electric current during operation becomes approximately 20 lower than the normal value The discharge tube of the compressor becomes abnormally hot nor mally 70 to 90 C The difference between high pressure and low pressure becomes almost zero Electric current reaches a high level abnormally and the value exceeds the limit of an ammeter In some cases a breaker turns off The compressor is a hummin...

Страница 39: ... 46 TC SHC IP 6 08 5 38 3 60 6 79 5 38 3 63 7 49 3 90 3 70 Outdoor Temp C Heating Indoor Wet Bulb Temp 17 0 C 19 0 C 19 5 C 22 0 C 35 TC SHC IP 5 70 5 33 2 26 6 20 2 28 6 32 4 53 2 28 7 01 3 97 2 30 40 TC SHC IP 5 33 4 96 2 42 5 89 4 46 2 44 6 51 3 53 2 49 46 TC SHC IP 4 84 4 28 2 60 5 39 4 28 2 62 5 95 3 10 2 67 Outdoor Temp C 16 16 C Thermostat Setting Remote Control Intake Air Temperature 18 28...

Страница 40: ...m 13 12 11 10 9 14 0 13 5 13 0 12 5 12 0 0 46 0 45 0 44 0 43 0 42 5 6 5 4 5 2 5 0 4 8 4 6 230V 240V I Q Current A Cooling Capacity kW LP O Outlet Gas Side Piping Pressure MPa Air Temperature C I LP Q O 6 4 2 0 2 4 6 8 OUTDOOR AIR TEMPERATURE C Condition Room temperature 20 C Heating operation High fan Piping length 7 5 m 13 12 11 10 9 44 42 40 38 36 1 8 1 7 1 6 1 5 1 4 1 3 6 0 5 5 5 0 4 5 4 0 230V...

Страница 41: ...Gas Side Piping Pressure MPa Air Temperature C Condition Room temperature 27 19 C Outdoor air temperature 35 24 C Cooling operation High fan I LP Q O Heating Characteristic Piping Length Characteristic Heating 6 4 2 0 2 4 6 8 OUTDOOR AIR TEMPERATURE C Condition Room temperature 20 C Heating operation High fan Piping length 7 5 m 16 15 14 13 12 11 46 44 42 40 38 36 2 2 2 0 1 8 1 6 1 4 8 0 7 5 7 0 6...

Страница 42: ... 41 MAC9512086C2 CS A181KR Exploded View CS A181KR CS A241KR 5 9 7 6 4 3 5 3 1 4 2 7 6 8 1 2 0 V0 V 0 V _ Untitled 4 6 10 00 3 18 PM 41 ...

Страница 43: ...TALLATION PLATE BAG COMPLETE INSTALLATION SCREW AIR PURIFYING FILTER COMPLETE AIR PURIFYING FILTER NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 CS A181KR CWD50C369 CWD93956 CWA98273 CWH02C058 CWH4580304 CWH64K007 CWB30C284 CWH6002140 CWT25007 1 2 CWE20C574 CWA98267 CWH4612103 CWE24443 CWH10943A CWA28C584 CWA2...

Страница 44: ... 43 MAC9512086C2 CS A181KR Exploded View CU A181KR CU A241KR 7 4 3 5 8 3 2 1 2 4 6 7 9 1 0 6 9 _ 5 8 V Untitled 4 6 10 00 3 18 PM 43 ...

Страница 45: ...CHECK VALVE V COIL COMPLETE TERMINAL COVER NUT FOR TERMINAL COVER TUBE ASS Y CAPILLARY TUBE CONTROL BOARD ASS Y CAPACITOR FAN MOTOR CAPACITOR COMPRESSOR HOLDER CAPACITOR TERMINAL BOARD ASS Y ELECTRONIC CONTROLLER SENSOR COMPLETE HOLDER SENSOR HOLDER SENSOR OVERLOAD PROTECTOR HOLDER OVERLOAD PROTECTOR CABINET FRONT PLATE COMPLETE CABINET REAR PLATE COMPLETE CABINET FRONT PLATE COMPLETE SOUND PROOF ...

Страница 46: ...UIT INTEGRATED CIRCUIT INTEGRATED CIRCUIT PHOTO COUPLER TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR DIODE BRIDGE DIODE BRIDGE DIODE DIODE DIODE DIODE DIODE DIODE ZENER DIODE ZNR V COIL V COIL NOISE FILTER NOISE FILTER TRANSFORMER TRANSFORMER RELAY ELECTRO MAGNETIC RELAY ELECTRO MAGNETIC SLIDE SWITCH PUSH SWITCH FUSE RESONATOR BUZZER SOUND GENERATOR VARIA...

Страница 47: ...00160 A00160 A00160 CU A241K ONLY XBA2C31TR0 A45ST4 0MGWT SYMBOL IC1 IC2 IC3 IC4 Q1 Q2 D1 D6 DB1 DB2 ZD1 ZNR2 ZNR4 T1 T2 CR1 CR2 RY HOT RY DEICE RY OFF RY H L RY V FUSE X1 DESCRIPTION NAME INTEGRATED CIRCUIT INTEGRATED CIRCUIT INTEGRATED CIRCUIT INTEGRATED CIRCUIT TRANSISTOR TRANSISTOR DIODE DIODE BRIDGE ZENAR DIODE ZNR TRANSFORMER SURGE ABSORBER SURGE ABSORBER RELAY RELAY RELAY RELAY RELAY FUSE R...

Страница 48: ... 5 1k C39 1000P D7 10k 10k b e c DTC114E Q13 Q14 DTC114E c e b 10k 10k DTC114E Q15 10k 10k b e c R63 10k R62 10k R61 10k D10 D9 D8 C38 1000P R60 14 7k 3 32k R59 1000P C37 D11 D12 D13 10k R64 10k R65 10k R66 R58 510k 7 5 6 C36 1000P R50 3 3k 1W 8 4 R48 620 C35 100V 10µ A54MA165TA5 X 6 D8 D13 A52MPC393C IC6 CN MTR 3 2 1 XH 3 GREEN FAN MOTOR C14 35V 2200µ C17 0 1µ R14 5 1k A52C096 IC2 DB2 S1VB20 CN F...

Страница 49: ...c 42 sec 0 sec 0 sec 36 sec 60 sec 4 sec 7 sec 2 sec 18 sec 4 sec 36 sec 0 sec 3 sec 30 sec When test point Short circuited How to use electronic circuit diagram Indications for resistance a K kΩ M MΩ W watt Not indicated 1 4W b Type Not indicated carbon resister Tolerance 5 metal oxide resister Tolerance 1 TIMER TABLE ELECTRONIC CIRCUIT DIAGRAM REMOTE CONTROL 17 18 19 20 21 22 23 24 25 26 27 28 2...

Страница 50: ...Printed in Malaysia P990400500YW MACC Untitled 5 6 10 00 3 21 PM 2 ...

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