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Indoor Unit Outdoor Unit CS-RE18QKE CS

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1. SENSOR PIPE TEMP SENSOR HEAT EXCHANGER HEAT EXCHANGER EVAPORATOR CONDENSER COMPRESSOR TEMP SENSOR COMPRESSOR COOLING HEATING 13 6 1 2 CS RE24QKE CU RE24QKE INDOOR OUTDOOR 5 EXPANSION RECEIVER STRAINER STRAINER persi P ES 5 SENSOR SENSOR EVA INLET TEMP SENSOR PIPE TEMP TEMP SENSOR SENSOR EVAPORATOR CONDENSER 2299249 5522422 2227 DISCHARGE MUFFLER IPM COMPRESSOR TEMP SENSOR TEMP SENSOR COMPRESSOR COOLING HEATING 14 7 Block Diagram CS RE18QKE CU RE18QKE 7 1 YOOGLNO 209 AOEZ 2 E AlddNs H 25 i JTONIS ZUMA AY Loeasn4 fal LING 15 7 2 CS RE24QKE CU RE24QKE 3SION Loeasna LINN YHOOGLNO LINN YOOQNI os AM ZHOS AO c 9 5 5 8 Wiring Connection Diagram 8 7 Indoor Unit GROUNDING TERMINAL ELECTRONIC CONTROLLER EM gt 9 TERMINAL 87 BOARD
2. 1312011 Service Manual Air Conditioner Indoor Unit Outdoor Unit CS RE18QKE CU RE18QKE CS RE24QKE CU RE24QKE Destination Europe E Europe L America Turkey WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public It does not contain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered 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 IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety These parts are marked by A in the Schematic Diagrams Circuit Board Diagrams Exploded Views and Replacement Parts List It is essential that these critical parts should be replaced with manufacturer s specified parts to prevent shock fire or other hazards Do not modify the original design without permission of manufacturer PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit Panas n ic Panasonic Corporation 2013 TABLE OF CONTENTS 1 Safety Precautions
3. 3 2 5 3 i one ooo Po rene PE 8 4 Location of Controls and Components 9 4 1 9 4 2 Outdoor 9 4 3 Remote 9 5 Dimensions 10 5 1 Indoor Unit amp Remote Control 10 5 2 tasca tratte 11 6 Refrigeration Cycle Diagram 13 7 Block Diagram iier er eoa cerro reas 15 7 1 CS RE18QKE CU RE18QKE 15 T 2 CS RE24QKE CU RE24QXKE 16 8 Wiring Connection Diagram 17 8 1 Hacor UBI oen ceo iter Sheed pce bo 17 8 2 Outdoor 18 9 Electronic Circuit Diagram 20 9 1 Haor d rar 20 9 2 OUtdoor 21 10 Printed Circuit Board 23 Indoor Unit osa toe Erde Scy rota ce ve es 23 10 2 Outdoor prr odes ved ee peces 24 11 Installation Instruction 27 111 Select the Best Location 27 Te oco eee 28 1 9 OUO Or 33 12 Operation
4. e Correct the connection YES Check the outdoor discharge pipe temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor discharge pipe temperature sensor Defect in outdoor discharge pipe temperature sensor Is the measured resistance of the outdoor gas pipe temperature sensor matches the value specified in its Replace the outdoor discharge pipe characteristic chart temperature sensor YES e Defect in outdoor unit PCB Replace the outdoor unit PCB 65 15 5 15 H37 Outdoor Liquid Pipe Temperature Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection For safety reason and to prevent Turn off the power A component breakdown always switch Caution Check the connector connection off the power before remove and connect the component Is the connector connection normal NO e Correct the connection YES Check the outdoor discharge pipe temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance o
5. CN TH1 o BLU WHITE WHITE 2 1 3 1 59 00909900 oo 0990 FAN MOTOR CABINET CONTROL BLU OUTDOOR SIDE BOARD TEMP SENSOR PLATE ELECTRO MAGNETIC COIL N THERMISTOR 4 WAYS VALVE COMP TEMP PIPING TEMP ELECTRO MAGNETIC COIL SENSOR SENSOR EXPANSION VALVE THERMISTOR THERMISTOR Resistance of Compressor Windings MODEL CU RE18QKE CONNECTION 5RD132XBA21 Note Resistance at 20 C of ambient temperature 18 8 2 2 CU RE24QKE BER GRY REACTOR REACTOR P V v y ACL1 FGI CNBLK ACBIK LM 124 L2 0 BLACK GREEN BLACK BLACK GRAY GRAY p RED RED FUSE3 NOISE FILTER CN WHT AC WHT TERMINAL 25A 250V CIRCUIT WHITE wHT WHITE E KV Q BOARD ACN NT a Ww RA 2 2 WHT m RED COMMUNICATION O WHT E COM3 CIRCUIT STWHT 27219 RED op wer fwar Pi o TBU V MOTOR YLW GRN YELLOW oyiw S ELECTRONIC CONTROLLER NOISE FILTER PFC RECTIFICATION CIRCUIT CIRCUIT OUTDOOR AIR TEMP SENSOR THERMISTOR YELLOW CONTROL CABINET BOARD SIDE PLATE 1 CN TH1 WHITE FUSE1 T2 5A L250V 25 PIPING TEMP SENSOR THERMISTOR 4 ELECTRONIC CONTROLLER CN TANK 1 BLUE RED TRADE MARK MAIN COMP TEMP SENSOR COMP TERMINAL THER
6. Check the rotation feedback output from fan motor Rotate the fan motor by hand is the rotation feedback NO voltage 15Vdc pin 1 amp 4 generated Is the motor control voltage 15Vdc pin amp 4 generated Operate the fan is the rotation command voltage 1 5Vdc pin 2 amp 4 generated e Replace indoor PCB Replace fan motor 67 15 5 17 H98 Error Code Stored Memory and no alarm is triggered TIMER LED flashing Malfunction Decision Conditions e Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation e Phenomena unit is stopping and re starting very often in heating mode Malfunction Caused e Indoor heat exchanger thermistor e Clogged air filter or heat exchanger Over bent pipe liquid side Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown always switch Caution off the power before remove and Check the indoor unit intake air filter connect the component YES Is the air filter dirty e Clean the air filter NO Check the dust accumulation on the indoor unit heat exchanger clean tne indoor unit heat exchanger _ e Clean the indoor unit heat exchanger Is the indoor unit heat exchanger dirty Check the indoor pipe temperature thermistor e Plug out connector CN TH from the indoor unit PCB e Measur
7. is ewwwR eme _ 16 TUBE ASSY CO CAP TUBE 1 CWTO01C5849 ir 3 s _ _ O x ewwvaw 1 _ 1 O O s omweso 1 _ _ x _ 1 Wes _ _ sewonco cow ge o _ AN 1 _ VCOLGOMPETEFOREXPANSONVANE 1 o _ sesw cwaeg A s me 1 _ RBEGTONCCONIOUuER WAN 3 _ 1 _ owens _ e ww s s ewm 1 _ 3 2 wwe swa somosoWWERA _ _ sa sowmosoowwEma _ 3 _ s secmowccowmoueg w _ ow ee 3 eem 5 sweswecomerg _ 1 _ 100 PART amp DESCRIPTION CU RE24QKE REMARK 1 61 SHOCK ABSORBER LEFT CWG712880 Note All parts are supplied from PAPAMY Malaysia Vendor Code
8. 3SION ME PEPE ALIHM ZvH 5 9 1 Eae ER itum aa DES HOLON L lot EB NMOG o Yo J je E CHMd AB 0645 2 i E Cou Qo c zu 556 TVNIIASH3LL r1 lt Qo g 108095 duie 2 NIVIN H3TIOH LNOO 9140519373 peers 5 edid V V T aem 0 ONIGNNOYD 5915191281845 40 s1UJJ8U JOSUaS 0 06 07 09 09 20 9 2 Outdoor Unit 9 2 1 CU RE18QKE INDOOR UNIT PIESESIOLSS BLK WHT RED BOARD BLK GRY GRY COMP TEMP SENSOR THERMISTOR 50kQ 3950 COMMUNICATION CIRCUIT OUTDOOR AIR TEMP SENSOR THERMISTOR AC BLK 15 3950 WHT 20A 250V PIPING TEMP SENSOR AC WHT FUSE2 2 THERMISTOR T3 15A L250V 4 96kQ 3800 SWITCHING POWER SUPPLY CIRCUIT NOISE FILTER RECTIFICATION GRN CIRCUIT CIRCUIT CONTROL BOARD RED CONTROL BOARD ee COMPRESSOR 2 5 L250V YLW GRN CN DCFM O L L WHITE CONTE 3 ELECTRONIC CONTROLLER FAN MOTOR BLU ELECTRO MAGNETIC COIL ELECTRO MAGNETIC COI
9. EN L3 EN EN 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Note All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 marked parts are recommended to be kept in stock 98 19 2 2 CU RE24QKE ASIM 90020 9 7 1 d 6 Y b Y S Y C Y 5 452 6 E X EOY OSY SY SY EY EO QUESO Qu qu SRR Qa Sui 69 SS 225 oO a m 9 gt 27 3 qa AN CL 9 09 TYAN v py 0 74 N 4 3 AS Se N 7 The above exploded view is the purpose of parts disassembly replacement The non numbered parts are not kept as standard service part Note 99 PART amp DESCRIPTION QTY CU RE24QKE REMARK 1 CHASSIS COMPLETE 1 CWD52K1190 2 w vemmoNBUNNG 3 3 CWB81043 A 5 NUT COMPRESSOR MOUNT 3 CWH561049 s wwonmewoer Ww A o L SeEW PANWOTORBRAGRE _ o scew mwwormwowr amp _
10. SAN NN E 22 1 Vg M EN Ny NN 1 ES ES N 4 Q Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service part 97 PART amp DESCRIPTION QTY CU RE18QKE REMARK 1 CHASSIS COMPLETE 1 CWD52K1261 2 _ 3 COMPRESSOR 1 5RD132XBA21 _______ Nw cowmssonwowr 3 5 SOUND PROOF MATERIAL CWG302632 o PROPELLER FAN ASSY CWHO03K1065 1 EN SCREW FAN MOTOR BRACKET NUT PROPELLER FAN CWH56053J CWB32C3764 CWB051016J EXPANSION VALVE 1 REACTOR TERMINAL BOARD ASSY CWAT73C8127R a EE EN 14 A 7 A 03x 3 ELECTRONIC 8 86 _ 6 CABINET FRONT PLATE CO CONTROL BOARD COVER TOP CABINET SIDE PLATE CO LEFT CWE041560A CABINET TOP PLATE EN EN NN rom EN _ EM _ NEN 8 NR EN Le 0 za EN L1 w EM ___ __ EM 14 1 NN a NN NENNEN NM ____ EN
11. maintain DC voltage level supply to power transistor To detect high DC voltage level after rectification Malfunction Caused e During startup and operation of cooling and heating when Power Factor Correction PFC protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors When DC voltage detected is LOW transistor switching will turn ON by controller to push up the DC level When DC voltage detected is HIGH 391Vdc 425Vdc active LOW signal will send by the controller to turn OFF relay RY C Troubleshooting When abnormality indication starts again Reset the error code and turn on the unit again NO Is AC power supply normal fluctuation power supply abnormal surge YES Verify PFC abnormality by measuring DC voltage between DCP and DCN at the capacitor YES 280Vdc e Defect in PFC circuitry 2 Is the DC voltage between DCP DCN normal Replace the outdoor unit PCB NO 391 2 425Vdc Confirm the DC voltage between CN FM 1 and 4 when compressor is running Normal voltage range should be between 265 325Vdc Is the DC voltage between CN FM1 and 4 of the outdoor fan NO e Defect in outdoor fan motor motor normal e Replace outdoor fan motor Check the compressor winding resistance For safety reason and to prevent e Turn off the power and disconnect the harnesses U V A component breakdown always switch
12. o wmeomuecowere _ _ amu SS 2 6 scew mowemug ew mowomue e www 1 ae msmuwowmeE 1 s ssscowiere mermiemoNscRE 3 ar owmmwemsmuov _ 3 e memueowmsmuno _ 3 Owen s memueowmsmuow 1 ws _______ s dT o OWemw s owesmss memuenowmsmuow 1 memuwowmsmucn _ 3 _ 95 SAFETY PART amp DESCRIPTION m CS RE18QKE CS RE24QKE INSTALLATION INSTRUCTION CWF616275 om eme INSTALLATION INSTRUCTION CWF616277 om emm INSTALLATION INSTRUCTION CWF616279 ommum _ Note e All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 marked parts are recommended to be kept in stock 96 19 2 Outdoor Unit 19 2 1 CU RE18QKE NN ANN WANN REN y
13. CAUTION This indication shows the possibility of causing injury or damage to properties e The items to be followed are classified by the symbols This symbol denotes item that PROHIBITED from doing e Carry out test run to confirm that no abnormality occurs after the servicing Then explain to user the operation care and maintenance as stated in instructions Please remind the customer to keep the operating instructions for future reference WARNING Do not modify the machine part material during repairing service If wiring unit is supplied as repairing part do not repair or connect the wire even only partial wire break Exchange the whole wiring unit Do not wrench the fasten terminal Pull it out or insert it straightly Engage dealer or specialist for installation and servicing If installation of servicing done by the user is defective it will cause water leakage electrical shock or fire Install according to this installation instructions strictly If installation is defective it will cause water leakage electric shock or fire Use the attached accessories parts and specified parts for installation and servicing Otherwise it will cause the set to fall water leakage fire or electrical shock Install at a strong and firm location which is able to withstand the set s weight If the strength is not enough or installation is not properly done the set will drop and cause injury For electrical wo
14. Temperature C 58 15 5 8 27 Outdoor Temperature Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting Resistance When abnormality indication starts again Check the connector connection Turn off the power Check the connector connection NO Is the connector connection normal YES Check the outdoor air temperature sensor e Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor air temperature sensor Is the measured resistance of the outdoor air temperature NO sensor matches the value specified in its characteristic chart YES Sensor Thermistor Characteristics DOutdoor Air Sensor 2 Outdoor Heat Exchanger Sensor Temperature 59 For safety reason and to prevent component breakdown always switch off the power Caution remove and connect the component Connector poor contact e Correct the connection Defect outdoor unit PCB e Replace the outdoor unit PCB e Defect in outdoor air temperature sensor e Replace the outdoor air temperature sensor 15 5 9 H28 Outdoor Pipe Temperature Sensor Abnormality Malfunction Decision
15. 5 C239 133 FUSE2 438 z iz gt 442 T 3 15A L 250V 423 INE 6229 E 1821 1 4 RED AW gt 5 E E COMI L 73 el ve n gt WHITE LJP122 LJP115 ox ec e WHITE x N gt n 2 it 212 LJP117 w O 201 2 9 4195 GREEN 9 gt BLACK 028 4313 5 S C 5 LJP114 WHITE geese LJP125 J54 5 _ e 2 J128 bis R452 R453 EE 1200 RY PWR gt 5 R203 gt 7 1 E R443 J13 5 162 5 _ N BLACK 2 T em 94 LJP108 P 935 34 20 ____ 2 43 21 Sg O BLACK a 55 Ti J219 GREEN 59 259 8 2 2601 ri 557 al Se a GREEN ES 3 a gt pop gt 4 JP15 LJP118 R202 a 5 RED RED 02 9 PC1 Pe RED _ RED gt 8 LJP112 LJP123 TH2 m 5 LJP108 LJP111 C100 T TY da C124 RED U 4309 12 S J288 Res 5 947 4315 qu ggg 2 73 A 4290 sl ise gt m 4298 SU 5 5 2018 5 2 BLUE V 4143 2020 9 5 cs S Sor 5 128 4181 cn Hy s d ar J13 253 ORANGE L mu 4140 em N ZD19 D32 9114 EET E a
16. Cover for Cover for the the left Cover for bottom piping piping Drain hose the right piping Install the indoor unit Hooks at installation Hook the indoor unit onto the upper portion of plate installation plate Engage the indoor unit with Sinaia tar the upper edge of the installation plate Ensure the hooks properly seated the 122 Piping installation plate by moving it in left and right Indoor unit Drain Secure the Indoor Unit 1 Press the lower left and right side of the unit against the installation plate until hooks engages with their slot sound click Installation plate To take out the unit push the marking at the bottom unit and pull it slightly towards you to disengage the hooks from the unit marking Insert the connection cable Connection cable Gas side piping Guide surface Connection cable Drain hose This can be used for left rear piping and left bottom piping also Connection cable More than Drain hose 1190 mm cb Sleeve for piping hole Adjust the piping slightly downwards e How to pull the piping and drain hose out in case e n case of left piping how to insert of the embedded piping the connection cable and drain Apply putty or hose caulking material to seal the wall opening Noe TT Drain hose from main unit PVC tube VP 65 for piping PVC tube for and connection cabl
17. Inverter Technology o Wider output range o Energy saving precise temperature control Environment Protection o Non ozone depletion substances refrigerant R410A Long Installation Piping o CS CU RE18QKE long piping to 20 meter o CS CU RE24QKE long piping up to 30 meter Easy to use remote control Quality Improvement o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect compressor o Noise prevention during soft dry operation Serviceability Improvement o Breakdown Self Diagnosis function 4 Location of Controls and Components 4 7 Indoor Unit Anti Bacterial filter Auto OFF ON button Use when remote control is misplaced or malfunction occurs Aluminium Fin INDICATOR POWER Green TIMER Orange Horizontal Airflow direction louver Do not adjust by hand Remote Control receiver Vertical Airflow direction louver Do not adjust by hand 4 2 Outdoor Unit Air inlet rear Air inlet s Air outlet 4 3 Remote Control AIR CONDITIONER Jn AUTO oo Remote control display Operation mode gt Airflow direction Temperature setting e selection AIR SWING SPEED Fan speed selection SU SET SET CHECK CLOCK RESET Panasonic 5 Dimensions 5 1 lt 5 Vi
18. connector abnormality or short circuit Compressor Compressor temperature e Compressor temperature H15 temperature sensor Continuous for 5s sensor open short circuit sensor lead wire and connector abnormality Current transformer faulty e Outdoor PCB faulty or H16 transformer CT compressor faulty compressor faulty abnormality H19 H12 e Fan motor lead wire and Indoor fan motor lock or connector Indoor fan motor Continuous merchanism lock happen for 7 times feedback abnormal 5 Indoor heat Indoor heat exchanger e Indoor heat exchanger exchanger 23 Continuous for 55 temperature sensor open temperature sensor lead wire temperature sensor nage i or short circuit and connector abnormality Indoor heat exchanger e Indoor heat exchanger H24 9 Continuous for 5s temperature sensor 2 open temperature sensor 2 lead wire temperature sensor or short circuit and connector H25 Indoor ion device Port is ON for 1 Os ion device PCB abnormality during ion device off Outdoor air Outdoor air temperature Outdoor air temperature sensor H27 temperature sensor Continuous for 5s sensor open short circuit lead wire and connector abnormality neat EM Outdoor heat exchanger e Outdoor heat exchanger 2 abnormality H28 Continuous for 55 temperature sensor 1 open temperature sensor 1 lead wire temperature
19. r L BR 9 RY PWR2 UP DOWN LOUVER MOTOR CN STM1 WHT Q d 1 FUSE301 lt a AC304 3 15 L250V RED decre AC303 FUSE WHT eles 8 TEMP BR OUTDOOR CIRCUIT FUSE O R UNIT 1402 LEFT RIGHT YLW Y LOUVER MOTOR Y G COMMUNICATION NUT EM CIRCUIT 1 GROUNDING TERMINAL PIPING TEMP SENSOR 2 _ RECTIFICATION E CIRCUIT EVAPORATOR PIPING TEMP SENSOR 1 THERMISTOR fe SUCTION TEMP SENSOR THERMISTOR 4 FAN MOTOR CN FM WHT REMARKS BLUE P PINK BR BROWN O ORANGE 5 BL BLACK Y YELLOW W WHITE G GREEN ELECTRONIC CONTROLLER NTROLLER R RED Y G YELLOW GREEN DISPLAY amp RECEIVER cere 17 8 2 Outdoor Unit 8 2 1 CU RE18QKE TO INDOOR UNIT YELLOW TERMINAL BLUE RED TRADE MARK RED GRY GRY COMP TERMINAL 12 0 os REMARKS BLU BLUE ELECTRONIC CONTROLLER BLK BLACK WHT WHITE AC BLK FUSE2 RED RED Oe T3 15A L250V YLW YELLOW SWITCHING GRY GRAY NOISE FILTER RECTIFICATION 20 250V CIRCUIT CIRCUIT CIRCUIT GRN GREEN AC WHT pes ORG ORANGE WHT WHITE YLW GRN YELLOW GREEN PFC mE d 9 CIRCUIT CIRCUIT pe CONTROL BOARD COMPRESSOR GRN CN DCFM ills FUSE1 WHITE T2 5A L250V CONTROL L RED BOARD YLW GRN
20. 00029488 O marked parts are recommended to be kept in stock PAPAMY Printed in Malaysia SB1213 0 101
21. Exchanger Temp Indoor Heat Exchanger Temp RE18QK 13 3 4 Cold Draught Prevention Control RE24QK When indoor pipe temperature is low cold draught operation starts where indoor fan speed will be reduced 13 3 5 Deice Operation When outdoor pipe temperature and outdoor air temperature is low deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks 14 Servicing Mode 14 1 Auto OFF ON Button Auto OFF ON Auto OFF ON Auto OFF ON Button pressed Button pressed Button pressed 5 sec 5 Auto Operation Test Run Operation Stop Test Run Operation Stop Forced cooling operation Forced heating operation Beep Beep x 2 1 AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF ON button is pressed This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction 2 TEST RUN OPERATION FOR PUMP DOWN SERVICING PURPOSE The Test Run operation will be activated if the Auto OFF ON button is pressed continuously for more than 5 seconds sound will occur at the fifth seconds in order to identify the starting of Test Run operation Forced cooling operation Within 5 minutes after Forced cooling operation start the Auto OFF ON button is pressed for more than 5 seconds 2 sounds will occur at the fifth seconds in order to identify the starting of Forced heating operation The
22. Is the measured DC voltage fluctuate between 18 25V lt m Measure the AC voltage at terminal 1 4 2 of indoor unit terminal board NO Improper connection at terminals indoor outdoor Check indoor outdoor connecting cable Is the measured voltage 230 240V lt m Measure the DC voltage at terminal 2 of indoor unit terminal board NO Improper connection at terminals indoor outdoor Check indoor outdoor connecting cable Is the measured DC voltage fluctuate between 18 25V Defect in receiver transmitter module of YES the communication circuitry in indoor unit PCB Replace the indoor unit PCB 15 5 2 H12 Indoor Outdoor Capacity Rank Mismatched Malfunction Decision Conditions e During startup error code appears when different types of indoor and outdoor units are interconnected Malfunction Caused e Wrong models interconnected Wrong indoor unit or outdoor unit PCBs mounted Indoor unit or outdoor unit PCBs defective Indoor outdoor unit signal transmission error due to wrong wiring Indoor outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown always switch Check the indoor and outdoor unit connection wires Caution off the power before remove and connect the component Is there any wiring error YE
23. J59 24 428 9 LJP106 ES B EA J142 em 0114 0135 M Jag E 5 5 0151 em 2 T es 770 em 043 z 22 CN 101 5 J215 22 0215 4 gt 7021 4310 J215 J304 4 4202 n G 460 YELLOW W Ote _ 4230 DN HEE R402 I PES wl 1136 gt _ 4r Ty z LJP101 e 5 Y e J188 Thick 3 P S 5 BLACK 0 2154 b LJP109 2118 T4J9 Z eile a 3 al gt o am 1204 i PRA e 3213 R 234 gt m 148 af gt m 2185 2 1 ou 4111 455 e s C54 e 112 S emm 147 BLACK LJP104 Q 84 9 2 Z lt 84 24 10 2 1 2 CU RE24QKE LJP101 4198 cem 4244 oam 5 4142 5 4131 4212 om gt 4157 J186 4134 4151 oemo 4163 camo J167 oem O 161412108 4 C118 LJP110 POWER TRANSISTOR IPM J125 29 lt gt 4198 a 0 omo 4113 ommo J240 Ocimum OCD ommo 312 13 J322 oo oummoJ112 4184 4323 a m9 LJP108 TRANSFORMER CT AC WHT AC BLK CN HOT CN TANK CN TH1 gt 2 CN HT CN ACFM 4 41114 a
24. and W Caution of the power before remove and e Measure the winding resistance between U V V W and connect the component W U Are the compressor s winding resistance U V V W U W NO e Defect in compressor uniform e Replace compressor Check the reactor impedance Is the impedance of the reactor low YES e Defect in reactor e Replace reactor lt m 15 5 22 F91 Refrigeration Cycle Abnormality Malfunction Decision Conditions input current is low while the compressor is running at higher than the setting frequency Malfunction Caused e Lack of gas 3 way valve close Troubleshooting When F91 indication happens For safety reason and to prevent component breakdown always switch Caution off the power before remove and Check 3 way valve connect the component NO closed 3 way valve opened e Open 3 way valve YES Check for gas leaking source Refer to H16 Check for gas leaking source Repair or replace defected part s YES Gas leaking Re claim and then re charge the right amount NO gas amount is OK Check other parts in refrigeration cycles 15 5 23 F93 Compressor Rotation Failure Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused Compressor terminal disconnect e Outdoor PCB malfunction Troubleshooting When F93 indicatio
25. gt GRY Nm REACTOR L2 RED RED us COMPRESSOR re RED YLW O POWER SUPPLY CIRCUIT ELECTRO MAGNETIC COIL 3 4 WAYS VALVE CN HOT BLUE ELECTRONIC CONTROLLER MAIN Compressor Temp Sensor 120 140 60 80 100 Temperature C 10 Printed Circuit Board 10 1 Indoor Unit Main Printed Circuit Board 10 1 1 ay 02 zv 4 RED gt 4 5 l 0103 R328 a KE C305 AC304 C343 c306 PRI CN STM1 CN DISP CN TH JP1 Random Auto Restart enable disable Indicator Printed Circuit Board 10 1 2 a 9 Q 2 10 2 Outdoor Unit it Board Ircul Main Printed C 10 2 1 CU RE18QKE 10 2 1 1 BLACK LJP110 44 au EV TH1 BLK TRANSFORMER HOT DCFM CURRENT e 2 2 2 2 Z 71 ty O O OQ O i 1 BLACK CN DCFM 015 CN EV D RED LJP120 ew O N ORANGE LJP101 WHITE GRAY N 1 2 TON EJP105 9 LJP126 Lions 7 2112 sons B Jus 5 J238 62471 0213 5 4 Y 4218 2 1 24 em 208 BLACK ie em J198 L1 0 CN25 J32 77 7854 5
26. piping and valves at opened condition will caused suck in of air abnormal high pressure in refrigeration cycle and result in explosion injury etc WARNING During pump down operation stop the compressor before remove the refrigeration piping Removal of compressor while compressor is operating and valves are opened will cause suck in of air abnormal high pressure in refrigeration cycle and result in explosion injury After completion of installation or service confirm there is no leakage or refrigerant gas It may generate toxic gas when the refrigerant contacts with fire Ventilate if there is refrigerant gas leakage during operation It may cause toxic gas when refrigerant contacts with fire Do not insert your fingers or other objects into the unit high speed rotating fan may cause injury Must not use other parts except original parts described in catalog and manual Using of refrigerant other than the specified type may cause product damage burst and injury etc N CAUTION Do not install the unit at place where leakage of flammable gas may occur In case gas leaks and accumulates at surrounding of the unit it may cause fire Carry out drainage piping as mentioned in installation instructions If drainage is not perfect water may enter the room and damage the furniture Tighten the flare nut with torque wrench according to specified method If the flare nut is over tightened after a long period the fl
27. 1 75HP or 4 x 2 5 2 0 2 5HP flexible cord type designation 60245 IEC 57 or heavier cord Do not use joint connection cable Replace the wire if the existing wire from concealed wiring or otherwise is too short Allowable connection cable length of each indoor unit shall be 30 m or less 6 Bind all the indoor and outdoor connection cable with tape and route the connection cable via the right escapement 30 7 Remove the tapes and connect power supply cord and connection cable between indoor unit outdoor unit according to the diagram below Terminals on the outdoor unit Colour of wires connection cable Terminals on the indoor unit Power supply cord Terminals on the isolating devices Disconnecting means 8 Secure the power supply cord and connection cable onto the control board with the holder 9 Close grille door by tighten with screw and close the front panel N WARNING This equipment must be properly earthed Terminal Board Control Board Earth wire ale lelelelell B longer than length mm others AC wires Recommended g for safety length mm 55135135150140135160 reason Sta Power supply Indoor amp outdoor cord connection cable Power supply cord lsolating Devices Outdoor unit Connection cable Note Isolating Devices Disconnecting means should have minimum 3 0 mm contact gap Ensure the colour of wires of outdoor
28. CS RE24QKE PARTNAMERDESCRPHON CEREMGKE REMARK ewsscomee LA 9 a eossnowmwcowur __ s fewness owe scew mossmRowEw 7 3 Los pmeewren 11 FLARE NUT GAS CWT251032 CWT251033 L w uemwswon owe n cowmosowoosmo Tmwwusowpcowire 1 9 REcrowccowmoutn ueN cwarscene cwarscenr o AN 55 3 lo 7 sewocmmee o omes 9 cowmosowpToGowR momoo e o s cowmorsowormowGowRco bscwacecmuecowtere swxcoenwes o s remm o _ cmwcmesw cmwcmesm wem _ LA x amwwoog owe 9 asmen 1 3 o 7 o ewe 3 Hononrat vane commiete 3 comer 1 9 s rewrowuecowiere Owencses
29. emm a i p 14 Remove 4 screws holding the h control board then pull the TT control board des wml 1 Figure 6 82 16 1 6 remove cross flow fan and indoor fan motor Ld m 1 ean Rr ge we 15 Remove the screw that holding the cross flow fan and fan motor axis 17 Remove the bearing by pulling it out gently 16 Remove the screw from the evaporator Figure 8 18 Push the holdfast to the left and lift up the evaporator Evaporator 19 Remove the cross flow fan from 20 Fan motor can be removed after the the unit by pulling it to the left and removal of cross flow fan downward Reminder To reinstall the fan motor adjust the fan motor connector to 45 towards you before fixing control board Figure 9 83 gt TI i il i ln j 444444444 Yr YA vns vl rea Vey mm TRIS Tr A 0 Ain o e Reminder To reinstall the cross flow fan ensure cross flow fan is in line as shown in figure 10 Figure 10 84 16 2 Outdoor Electronic Controller Removal Procedure 16 2 1 CU RE18QKE 1 Remove the 8 scre
30. flare or union nuts Reclaim and recharge refrigerant NO Check refrigerant amount NO Excess refrigerant YES e Reclaim and recharge with correct amount of refrigerant NO Replace outdoor unit PCB Replace outdoor unit compressor 78 15 5 28 99 DC Peak Detection Malfunction Decision Conditions During startup and operation of cooling and heating when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry Malfunction Caused DC current peak due to compressor failure DC current peak due to defective power transistor s DC current peak due to defective outdoor unit PCB DC current peak due to short circuit Troubleshooting When indication starts again Reset the error code and turn on the unit again Outdoor electronic circuit defect due to power transistor short Replace the outdoor unit PCB NO Compressor stops Is there a sound when compressor starts YES NO Quite a lot of vibration at Amplification IC defect start operation Diode defect Defect in microcontroller Replace the outdoor unit PCB Is compressor vibration even YES Is there no change even if all refrigerant NO Normal is discharged Excessive amount of refrigerant YES Stops after 2 3 seconds of noise during operation Check the compressor winding resistance Turn off the power disconnect the harnesses U V and W For safety reason and to preve
31. indoor intake temperature remote control setting temperature lt 2 C HEAT mode is decided 12 1 6 Indoor Fan Motor Operation A Basic Rotation Speed rpm Manual Fan Speed Cooling Dry Fan motor s number of rotation is determined according to remote control setting Heating Fan motor s number of rotation is determined according to remote control setting CO cowl 5 ej CN Tab rpm Sh Auto Fan Speed Cooling Dry e According to room temperature and setting temperature indoor fan speed is determined automatically e When set temperature is not achieved the indoor fan will operate according to pattern below Fan 1 pattern 10 s Speed b e f g h a b Higher n Medium Lower e When set temperature achieved the fan speed will be fixed 37 Heating e According to indoor pipe temperature automatic heating fan speed is determined as follows RPM Increased RPM Maintain RPM Reduced 39 C 19 C 16 C Indoor Pipe Temp B Feedback control e Immediately after the fan motor started feedback control is performed once every second e During fan motor on if fan motor feedback 2 2550 rpm or lt 50 rpm continue for 10 seconds then fan motor error counter increase fan motor is then stop and restart If the fan motor counter becomes 7 times then H19 fan motor erro
32. indoor unit PCB YES z o Defect in indoor unit PCB E Replace the indoor unit PCB O 9 15 5 19 11 4 Malfunction Decision Conditions e When indoor heat exchanger is cold during heating except deice or when indoor heat exchanger is hot during cooling and compressor operating the 4 way valve is detected as malfunction Malfunction Caused e Indoor heat exchanger pipe thermistor 4 way valve malfunction Troubleshooting When abnormality starts again Check the indoor pipe temperature thermistor e Plug out connector CN TH from the indoor unit PCB Measure the resistance of the indoor heat exchanger temperature thermistor A Caution Defect in indoor pipe temperature thermistor Replace the indoor pipe temperature thermistor 5 the measured resistance of the indoor pipe temperature thermistor matches the value specified in its characteristic chart YES YES Problem occurs in heating mode only NO it happen in cooling dry as well YES Is 4 way solenoid valve being energised Outdoor PCB fault 4 way valve not working e Replace not energize NO Outdoor PCB The 4 way valve may have been damaged Check CN HOT or wrongly connected between discharge and suction tube connection 4 way valve connector e Check connecting tubes to 4 way valve OK Check V coil attach to solenoid valve OK Check valve v coil continuity Remove CN HOT V co
33. minutes Timer LED blinking F95 outdoor high pressure rise protection 13 2 3 Dew Prevention Control 1 2 4 To prevent dew formation at indoor unit discharge area This control activated if o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller if fulfilled o When Cooling or Dry mode is operated more than 20 minutes or more This control stopped if o Compressor stopped o Remote control setting changed fan speed temperature o Outdoor air temperature and indoor intake temperature changed Fan speed will be adjusted accordingly in this control 13 2 4 Freeze Prevention Control 1 1 2 3 4 When indoor heat exchanger temperature is lower than 0 continuously for six minutes compressor will stop operating Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 5 C At the same time indoor fan speed will be higher than during its normal operation If indoor heat exchanger temperature is higher than 5 for five minutes the fan speed will return to its normal operation 13 2 5 Freeze Prevention Control 2 1 2 Control start conditions o During Cooling operation and soft dry operation During thermo OFF condition indoor intake temperature is less than 10 Compressor stops for freeze prevention control o Either one of the conditions above occurs 5 times in 60 minutes Control contents Operation stops o Timer LED
34. not release refrigerant during piping work installation servicing reinstallation and during repairing a refrigerant parts Take care of the liquid refrigerant it may cause frostbite Installation or servicing work It may need two people to carry out the installation or servicing work 10 Do not install this appliance a laundry room or other location where water may drip from the ceiling etc Do not sit or step on the unit you may fall down accidentally Do not touch the sharp aluminium fins or edges of metal parts 12 f you are required to handle sharp parts during installation or servicing please wear hand glove Sharp parts may cause injury 2 Specifications Indoor CS RE18QKE CS RE24QKE CU RE18QKE CU RE24QKE Performance Test Condition EUROVENT EUROVENT Power Supply kW 0 98 6 00 0 98 8 10 Capacity BTU h 3340 20500 3340 2 600 O Kcal h 8 6970 BTU hW 11 93 Kcal hW 3 00 W W 6 7 ErP Consumption Power Factor 97 dB A 44 37 47 1 38 Power Level dB 60 dB A 47 Power Level dB 61 kW 0 98 8 00 0 98 5160 2 03k 380 2 67 2 96 10 10 2 54 2 58 8 79 2 21 3 03 10 34 2 61 Cooling Indoor Noise L OO t NO Outdoor Noise L scor Annual Consumption OO kWh 1502 2026 dB A 44 37 47 38 N Ind
35. off the power before remove and connect the component NO H33 intermittently during operation unit has operated normally before NO H33 occurs right after servicing and has never occur before Match the compatible model follow specification Has the AC power input dropped Has the PCB indoor or outdoor being replaced YES more than 50 of rating in most Has the AC power input dropped cases customers do not aware of Confirm the replaced PCB part more than 50 of rating the voltage drop but the installed versus listed in Service anual H33 occurs right after installation Has the indoor and outdoor model matched in voltage rating area has known power supply issue NO e Change outdoor main Check DC Voltage after e Replace with correct PCB indoor main and PCB rectification at outdoor or indoor PCB DC Voltage drops below 180Vdc 63 e Change outdoor PCB Match the compatible model follow specification 15 5 13 H34 Outdoor Heat Sink Temperature Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection For safety reason and to p
36. sensor pee or short circuit and connector 1 abnormality Outdoor discharge Outdoor discharge pipe e Outdoor discharge pipe H30 pipe temperature Continuous for 5s temperature sensor open temperature sensor lead wire sensor abnormality or short circuit and connector Mum Outdoor heat exchanger e Outdoor heat exchanger H32 9 Continuous for 55 temperature sensor 2 open temperature sensor 2 lead wire temperature sensor re or short circuit and connector 2 abnormality Indoor outdoor Indoor and outdoor rated H33 misconnection voltade dilereni Indoor and outdoor units check abnormality 9 Outdoor heat sink Outdoor heat sink H34 temperature sensor Continuous for 2s temperature sensor open e Outdoor heat sink sensor abnormality or short circuit Outdoor gas pipe Heating Outdoor gas pipe H36 temperature sensor Continuous for 5s protection temperature sensor open MAC 4 abnormality operation only or short circuit Outdoor liquid pipe Cooling Outdoor liquid pipe sae H37 temperature sensor Continuous for 5s protection temperature sensor open 2 2 abnormality operation only or short circuit Indoor Outdoor H38 mismatch brand Check indoor outdoor Wrong wiring and connection wire and connection Abnormal indoor connecting pipe expansion pipe 3 times happen 39 operating unit or within do minutes valve abnormality indoor e Indoor heat exchanger sensor cod
37. the connection cable Bushing for tube assembly JS through hole Putty or caulking compound 4 Finish by sealing the sleeve with putty caulking compound at the final stage 970 mm 28 11 2 3 Indoor Unit Installation e Do not turn over the unit without it s shock absorber during pull out the piping It may cause intake grille damage e Use shock absorber during pull out the piping to protect the intake grille from damage Intake grille For the right rear piping Pull out the Indoor piping 11 2 3 1 Step 1 A SIE Install the Indoor Unit 5170260 Secure the Indoor Unit Step 4 e 3 lt 5 5 5 ct 5 Insert the cables from bottom of the unit through the control board hole until terminal board area 11 2 3 2 the right right bottom piping Pull out the Indoor piping we Install the Indoor Unit T Step 3 Insert the power supply cord and connection cable insert the cables from bottom of the unit through the control board hole until terminal board area Secure the Indoor Unit 11 2 3 3 For the embedded piping NIE Replace the drain hose SIUE Bend the embedded piping Use a spring bender or equivalent to bend the piping so that the piping is not crushed Pull the connection cable into Indoor
38. within 20 minutes the unit will Stop operation Timer LED blinks and F91 indicated 13 1 6 Low Frequency Protection Control 1 When the compressor operate at frequency lower than 24 Hz RE18QK and 20 Hz RE24QK continued for 20 minutes the operation frequency will be changed to 23 Hz RE18QK and 21 Hz RE24QK for 2 minutes 13 1 7 Low Frequency Protection Control 2 When all below conditions comply the compressor frequency will change to lower frequency Temperature T for Cooling Soft Dry Indoor intake air 2 lt 14 30 T lt 14 or T 2 28 Outdoor air C T 130r T 2 38 T 4orT 2 24 indoor heat exchanger C 42 13 2 Protection Control For Cooling amp Soft Dry Operation 13 2 1 Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below This control will begin 1 minute after the compressor starts Compressor frequency will adjust base on Outdoor Air Temperature 25 C Limited Frequency Outdoor Air Temperature 13 2 2 Cooling Overload Control Pipe temperature limitation restriction RE24QK only O O O Detects the Outdoor pipe temperature and carry out below restriction limitation Limit the compressor Operation frequency The compressor stop if outdoor pipe temperature exceeds 63 C 18 and 65 C RE24QK If the compressor stops 4 times 20
39. 0 2 4 6 8 10 12 14 16 18 20 22 24 Outdoor Air Temperature 91 18 2 2 CS CU RE24QKE Current A Outlet Air C High Pressure MPa 55 00 50 00 45 00 40 00 35 00 30 00 25 00 16 14 12 10 8 6 4 2 0 2 4 6 8 10 12 3 40 3 20 3 00 2 80 2 60 2 40 2 20 pf o E 16 14 12 10 8 6 4 2 0 2 4 6 8 10 12 2 00 Outdoor Air Temperature C 92 18 3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length 18 3 1 CS CU RE18QKE CS CU RE24QKE 2 3 4 5 6 7 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 0 99 Cooling Capacity Correction Factor Pipe Length m 1 01 1 00 0 99 0 96 LE 0 95 Heating Capacity Correction Factor 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 Pipe Length m Note The graphs show the factor after added right amount of additional refrigerant 93 19 Exploded View and Replacement Parts List 19 1 Indoor Unit vv CWH55025 J CWH55051 J Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts 94 Model CS RE18QKE
40. 1 12 70 1 2 Standard length m ft 5 0 16 4 m TELS m 30 0 10 32 Length range min I D amp O D Height different Additional Gas Amount Length for Additional Gas Inner Diameter Drain Hose Length 75045 6 g m oz ft m ft U 5 g D 3 3 mm Thermostat Protection Device Electronic Contol Electronic Contol Dry Bulb Wet Bulb Dry Bulb Wet Bulb Cooling Operation Heating ooling Operation Heating 1 Cooling capacities are based on indoor temperature of 27 C Dry Bulb 80 6 F Dry Bulb 19 0 C Wet Bulb 66 2 F Wet Bulb and outdoor air temperature of 35 C Dry Bulb 95 F Dry Bulb 24 C Wet Bulb 75 2 F Wet Bulb Heating capacities are based on indoor temperature of 20 C Dry Bulb 68 F Dry Bulb and outdoor air temperature of 7 C Dry Bulb 44 6 F Dry Bulb 6 C Wet Bulb 42 8 F Wet Bulb Heating low temperature capacity Input Power and COP measured at 230 V indoor temperature of 20 C outdoor 2 1 C Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature of 20 C outdoor 7 8 C Standby power consumption lt 2 0w when switched OFF by remote control except under self protection control Specifications are subjected to change without prior notice for further improvement 5 5 Indoor ee Features
41. 140 130 2 O 420 11 0 10 0 3 5 7 9 1113 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 Outdoor Air Temperature C lt t 5 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 5 U o A 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 Outdoor Air Temperature 89 18 1 2 CS CU RE24QKE 14 0 13 5 _ 130 125 lt 12 0 2 115 5 410 10 5 10 0 lt 5 T CL on CL z Outdoor Air Temperature C 90 18 2 Heat Mode Outdoor Temperature Characteristic Condition Indoor room temperature 20 C DryBulb Wet Bulb Unit setting Standard piping length forced heating at 30 C Hi fan Compressor frequency Rated for Heating operation Voltage 230V 18 2 1 CS CU RE18QKE 55 00 50 00 7 45 00 E lt 40 00 5 35 00 30 00 25 00 46 14 12 10 8 56 4 2 2 4 6 8 10 12 14 16 18 20 22 24 26 Outdoor Air Temperature lt gt 1 l1 1 1 L1 1 L1 1 1 Ll 1 _ LE 5 o 70 A AZ D I ee eee ee E 16 14 412 10 8 6 4 2
42. 5 7 23 Indoor Pipe Temperature Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection For safety reason and to prevent component Plug out connector from the indoor unit breakdown always switch off the power e Measure the resistance of the indoor pipe temperature Caution before remove and connect the component sensor 5 the connector connection normal NO e Connector poor contact e Correct the connection YES Check the outdoor air temperature sensor e Plug out connector from the outdoor unit PCB o Measure the resistance of the outdoor intake air temperature sensor Is the measured resistance of the outdoor intake air temperature sensor matches the value specified in its characteristic chart Defect in outdoor intake air temperature sensor Replace the outdoor intake air temperature sensor YES e Detect in outdoor unit e Replace the outdoor unit PCB Sensor Thermistor Characteristics MN Pipe temp Sensor INI Qintake Air Temp Sensor SSR ANSE AL Resistance 10 0 10 20 30 40 50
43. 55 A J111 nn dist am 5 Mi camm 1117 c 5 9233 4187 Jiss S Campo 243 qw 9110 el VITIS A yy SES 2 w 4 JE n gt 2 28 5 6 as oemummm o J300 m A 5 3 5 LES 5 153 LJP104 25 10 2 2 Noise Filter Printed Circuit Board 10 2 2 1 CU RE24QKE 26 11 11 7 Select the Best Location Installation Instruction 11 1 1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen workshop and etc e There should not be any heat source or steam near the unit e There should not be any obstacles blocking the air circulation A place where air circulation in the room is good e Aplace where drainage can be easily done e Aplace where noise prevention is taken into consideration Do not install the unit near the door way e Ensure the spaces indicated by arrows from the wall ceiling fence or other obstacles e Recommended installation height for indoor unit shall be at least 2 5 m 11 1 2 Outdoor Unit lf an awning is built over the unit to prevent direct sunlight or rain be careful that heat radiation from the condenser is not obstructed e There should not be any animal or plant which could be affected by hot air discharged e Keep the spaces indicated by arro
44. Auto OFF ON button may be used together with remote control to set change the advance setting of air conditioner operation Auto OFF ON button pressed Main unit always continue Test forced cooling operation 5 8 11 16 Auto Operation Test Run Operation Test Run Operation Remote Control Number Remote Control Receiving Forced Cooling Operation Forced Heating Operation Switch Mode Sound OFF ON Beep Beep x 2 Beep x 3 t Beep x 4 t Press AC RESET then Press AC RESET at any key at remote control remote control 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF ON button is pressed continuously for more than 11 seconds 3 beep sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition and press AC RESET button and then press any button at remote control to transmit and store the desired transmission code to the EEPROM There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit The indoor unit will only operate when received signal with same transmission code from remote control This could prevent signal interference when there are 2 or more indoor units installed nearby together To change remote control transmission code short or open jumpers at the remote control printed circuit board T Remote Control Prin
45. B e Replace the outdoor unit PCB Compressor Temp Sensor Thermistor Characteristics H E N ES m NI Sd B RS 40 60 80 773 120 140 P Temperature C NISI BEES e 55 15 5 5 H16 Outdoor Current Transformer Malfunction Decision Conditions current detected by Current Transformer CT is below threshold value when the compressor is operating at certain frequency value for 3 minutes Malfunction Caused Lack of gas Broken CT current transformer Broken Outdoor PCB Troubleshooting When abnormality indication starts again For safety reason and to A prevent component Caution breakdown always switch off Refer to Service Manual Technical Graph the power before remove and for Temp vs Current and Pressure connect the component Suction pressure and running current is In forced cooling check suction ressure Running current is much too low and normal versus running current suction pressure is much too high Compressor Lack Compression Replace Compressor e Check amp replace defected CT Running current and suction pressure is very low Check gas leaking source Repair or replace defected part s Capillary tube expansion valve blockage Replace defected part s 56 15 5 6 H19 Indoor Fan Motor DC Motor Mechanis
46. Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again For safety reason and to prevent Check the connector connection Ab component breakdown always switch e off the power Caution off the power before remove and e Check the connector connection connect the component Is the connector connection normal contact YES Check the outdoor heat exchanger temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor heat exchanger temperature sensor e Defect in outdoor heat exchanger Is the measured resistance of the outdoor heat exchanger temperature sensor temperature sensor matches the value specified in its e Replace the outdoor heat exchanger characteristic chart temperature sensor YES e Defect in outdoor unit PCB e Replace the outdoor unit PCB Sensor Thermistor Characteristics Outdoor Air Sensor Resistance a 10 0 10 20 30 40 50 gt Temperature 60 15 5 10 30 Compressor
47. Discharge Temperature Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection For safety reason and to prevent Turn off the power A component breakdown always switch e Check the connector connection Caution off the power before remove and connect the component NO Is the connector connection normal e Connector poor contact e Correct the connection YES Check the outdoor discharge pipe temperature sensor e Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor discharge pipe temperature sensor Defect in outdoor discharge pipe temperature sensor Is the measured resistance of the outdoor discharge pipe temperature sensor matches the value specified in its Replace the outdoor discharge pipe temperature sensor YES e Defect in outdoor unit PCB e Replace the outdoor unit PCB 61 15 5 11 H32 Outdoor Heat Exchanger Temperature Sensor 2 Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sens
48. L H EXPANSION VALVE LI 4 WAYS VALVE pui Sensor Thermistor Characteristics Outdoor Air Sensor 2 Sensor Compressor Temp Sensor Resistance Resistance a EET a No SE 10 0 10 20 30 40 50 20 40 60 100 120 140 Temperature C Temperature C 21 9 2 2 CU RE24QKE TERMINAL BOARD NOISE FILTER CIRCUIT FUSES 25A 250V TO OUTDOOR UNIT A CIRCUIT lt Ww i iz YLW GRN m PI T 5 5125 1 10W CONTROL CABINET BOARD SIDE PLATE G1 ELECTRONIC CONTROLLER NOISE FILTER C49 SV TANK TEMP SENSO 3950 OUTDOOR TEMP SENSOR 15KQ 3950 PIPE TEMP SENSOR CN TH1 4 96kQ 3800 Sensor Thermistor Characteristics Outdoor Air Sensor Outdoor Heat Exchanger M Sensor Resistance a Hi ES Qi IN ES 0 10 20 30 1 1 40 50 Temperature C REACTOR GRN ACL1 FG1 CN BLK AC BLK 200 GREEN BLACK BLACK 22 1 GRAY GRAY CN WHT AC WHT WHITE WHT WHITE 4 WAY VALVE CIRCUIT Resistance
49. LED will light up again operation after breakdown repair the Timer LED will no more blink The last error code abnormality will be stored in IC memory 15 3 2 To Make a Diagnosis 1 2 3 Timer LED start to blink and the unit automatically stops the operation Press the CHECK button on the remote controller continuously for 5 seconds will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking Press the TIMER A or V button on the remote controller The code HOO no abnormality will be displayed and signal will be transmitted to the main unit Every press of the button up or down will increase abnormality numbers and transmit abnormality code signal to the main unit When the latest abnormality code on the main unit and code transmitted from the remote controller are matched power LED will light up for 30 seconds and a beep sound continuously for 4 seconds will be heard If no codes are matched power LED will light up for 0 5 seconds and no sound will be heard The breakdown diagnosis mode will be canceled by pressing the CHECK button continuously for 5 seconds or without any operation the remote control for 30 seconds The LED will be off if the unit is turned off or the RESET button on the main unit is pressed 15 3 3 To Display Memorized Error Code Protective Operation status Turn p
50. MISTOR REMARKS gt BLU BLUE EXPANSION VALVE BLK BLACK SWITCHING WHT WHITE 4 21 POWER SUPPLY RED RED CIRCUIT YLW YELLOW ELECTRO MAGNETIC O COIL E 4 WAYS VALVE BLUE ORG ORANGE Pore Resistance of Compressor Windings MODEL CU RE24QKE CONNECTION SKD240XAF 21 Note Resistance at 20 C of ambient temperature 19 it Diagram Ircul 9 Electronic C Indoor Unit 9 1 S NEEN ALIHM LOZO3 2 670 979 i SIG NO S MOL L LOZO vd MOTI3A pad Ho pee 1 dSIQ NO or lt ezo Ao st 5 AG AS m 969 LOl HOLSIINS3H L MOL L Zt M3AI3O3M 8 AVIdSIC 6024 Z MOSN3S 4 31 SNIdld 12 0 YOLSINYSHL 20809 AS 7 6 HOSN3S 4 54 eee 1 e HOISIWH3HI HOSN3S 777 iz HiIN3L NOILONS DA 469 AG AG AG 1 c0cq31 968 MOL L PA eBueJo LHM W3 NO YOLOW ZW1S NO ble ge YOLOW 1 918 1427 962 ory NOILVOIJILO3M I D A 5 On TVNINHBL ONIGNNOYD LINDUIO NOILVOINNWIWOO 196 55201 LINDUID 3504 1 lt Do eymejeduie ve 9 20 o o 6 9
51. Outdoor DB C wel low p SHC TC SHC TC SHC 5229 3971 1273 5000 4040 1470 404 3886 1552 532 3063 1126 5688 3192 1015 5318 3024 1262 4785 2847 1580 3291 4477 1661 Dry bulb value based on 46 humidity 5 24 21 Indoor Outdoor DB C 10 7 0 5 16 25 35 src sxc ie sec ve sc e sxe e suc e Dry bulb value based on 46 humidity 87 17 2 Heat Mode Performance Data Unit setting Standard piping length Hi Fan Heat mode at 30 C Voltage 230V 17 2 1 CS RE18QKE CU RE18QKE Outdoor WB L Te J c 1e d P 17 2 2 CS RE24QKE CU RE24QKE Outdoor WB m q To yg gt p we p de Te po de TC Total Cooling Capacity KW SHC Sensible Heat Capacity kW IP Input Power KW 88 18 Service Data Service data provided are based on the air conditioner running under rated frequency during forced cooling forced heating mode 18 1 Cool Mode Outdoor Air Temperature Characteristic Condition Indoor room temperature 27 C DryBulb 19 C Wet Bulb Unit setting Standard piping length forced cooling at 16 C Hi fan Compressor frequency Rated for cooling operation Voltage 230V 18 1 1 CS CU RE18QKE 18 0 17 0 _ 16 0 xm 15 0 lt
52. S Correct the indoor outdoor units connection wires NO Check indoor and outdoor units model number Is indoor unit and outdoor unit model numbers matched NO Match the compatible model s YES Check the spare part numbers of the indoor and outdoor unit PCBs and compare with their Part Lists YES NO Matched compatibility UR for the specified indoor or outdoor unit Replace the indoor and outdoor unit PCBs o3 15 5 3 H14 Indoor Intake Air Temperature Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again I For safety reason and to prevent component Check the connector connection breakdown always switch off the power e Turn off the power Caution before remove and connect the component Check the connector connection Is the connector connection normal NO e Connector poor contact Correct the connection YES Check the indoor intake air temperature sensor Plug out connector from the indoor unit PCB E Measure the resistance of the indoor intake air temperature sensor Is the measured resistance of the indoor intake air NO Defect in indoor intake air temperature sensor temperature sensor matches the value speci
53. Unit The power supply cord and indoor unit and outdoor unit connection cable can be connected without removing the front grille Cut and flare the embedded piping When determining the dimensions of the piping slide the unit all the way to the left on the installation plate Refer to the section Cutting and flaring the piping Install the Indoor Unit Step 5 Connect the piping Please refer to Connecting the piping column in outdoor unit section Below steps are done after connecting the outdoor piping and gas leakage confirmation Step 7 Insulate and finish the piping Please refer to Insulation of piping connection column as mentioned in indoor outdoor unit installation Secure the Indoor Unit Shock absorber Right Rear piping Tape it with piping in a position as mentioned in Fig below Piping Deu m c Cover Cover for the for the bottom piping iil Cover for the piping PIPING bottom piping Cover for Drain hose the right Cover for pipin How to keep the cover AS In case of the cover is cut keep the cover at the rear of chassis as shown in the illustration for future reinstallation Left right and 2 bottom covers for piping Right and Right Bottom piping Tape it with piping in a position as mentioned in Fig below _ Piping MS NO
54. a charging hose with a push pin to the Low side of a charging set and the service port of the 3 way valve o Besure to connect the end of the charging hose with the push pin to the service port 2 Connect the center hose of the charging set to a vacuum pump 3 on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg 0 MPa to 76 cmHg 0 1 MPa Then evacuate the air approximately ten minutes 4 Close the Low side valve of the charging set and turn off the vacuum pump Make sure that the needle in the gauge does not move after approximately five minutes Note BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERENT GAS LEAKAGE 5 Disconnect the charging hose from the vacuum pump and from the service port of the 3 way valve 6 Tighten the service port caps of the 3 way valve at a torque of 18 Nem with a torque wrench 7 Remove the valve caps of both of the 2 way valve and 3 way valve Position both of the valves to OPEN using a hexagonal wrench 4 mm 8 Mount valve caps onto the 2 way valve and the 3 way valve Be sure to check for gas leakage If gauge needle does not move from 0 cmHg 0 MPa to 76 cmHg 0 1 MPa in the step above take the following measure If the leak stops when the piping connections are tightened further continue working from step G If the leak does not stop when the connections are retightened repair location of leak Do not release refrigerant du
55. alve and lead wire and connector ECONAVI sensor defective or disconnected e ECONAVI PCB e High pressure sensor e Lead wire and connector e Light sensor defective or disconnected e Outdoor fan motor lead wire and connector e Fan motor lock or block e Check indoor heat exchanger e Air filter dirty e Air circulation short circuit e Check indoor heat exchanger e Air filter dirty e Air circulation short circuit e 4 way valve e Lead wire and connector e Check indoor outdoor connection wire and pipe e Indoor heat exchanger sensor lead wire and connector e Expansion valve lead wire and connector e Outdoor PCB faulty ie JEEP abnormality within 20 minutes abnormal close m umm P abnormal revolution within 20 minutes revolution or compressor lock Compressor 4 times happen Compressor discharge discharge overshoot ace i within 30 minutes pressure overshoot protection e Check refrigeration system Outdoor cooling high 4 times happen Cooling high pressure e Check refrigeration system F95 2 SC pressure protection within 20 minutes protection e Outdoor air circuit Bel 4 times happen Power transistor module e PCB faulty within 30 minutes overheat e Outd it f t protection utdoor air circuit fan motor Compressor 3 times happen overheating Compressor overheat e Insufficient refrigerant protection e Check refrige
56. and Control 36 12 1 Basie FUhCOllOD 36 12 2 Airflow 38 12 3 ON Timer Control 40 12 4 OFF Timer 40 12 5 Auto Restart Control 40 13 Protection 41 13 1 Protection Control For All Operations 41 13 2 Protection Control For Cooling amp Soft Dry 43 13 3 Protection Control For Heating Operation 44 14 Servicing Mode 45 14 1 Auto OFF ON Button 45 14 2 Remote Control Button 46 15 Troubleshooting Guide 47 15 1 Refrigeration Cycle System 47 15 2 Relationship Between The Condition Of The Air Conditioner And Pressure And Electric eter 48 15 3 Breakdown Self Diagnosis Function 49 15 4 Error Codes 50 15 5 Self diagnosis Method 52 16 Disassembly and Assembly Instructions 80 16 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal PIOGGGOUIGS tare se
57. are may break and cause refrigerant gas leakage Do not touch outdoor unit air inlet and aluminium fin It may cause injury Select an installation location which is easy for maintenance Pb free solder has a higher melting point than standard solder typically the melting point is 50 F 70 F 30 C 40 C higher 6 Please use a high temperature solder iron In case of the soldering iron with temperature control please it to 700 20 F 370 10 Pb free solder will tend to splash when heated too high about 1100 F 600 C Power supply connection to the room air conditioner Use power supply cord 3 1 5 mm 1 0 1 75HP x 2 5 2 0 2 5HP type designation 60245 IEC 57 or heavier cord Connect the power supply cord of the air conditioner to the mains using one of the following method Power supply point should be in easily accessible place for power disconnection in case of emergency some countries permanent connection of this air conditioner to the power supply is prohibited 1 Power supply connection to the receptacle using power plug Use an approved 15 16A 1 0 1 75HP 16A 2 0HP 20A 2 5HP power plug with earth pin for the connection to the socket 2 Power supply connection to a circuit breaker for the permanent connection Use an approved 16A 1 0 2 0HP 20A 2 5HP circuit breaker for the permanent connection It must be a double pole switch with a minimum 3 0 mm contact gap 8 Do
58. blinks and H99 indicated 43 13 2 6 Odor Cut Control To reduce the odor released from the unit o Start Condition AUTO FAN Speed is selected during COOL or DRY operation During freeze prevention control and timer preliminary operation this control is not applicable o Control content Depends on compressor conditions 1 Compressor OFF Compressor ON The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds 2 Compressor ON Compressor OFF The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds 13 3 Protection Control For Heating Operation 13 3 1 Intake Air Temperature Control Compressor will operate at limited frequency if indoor intake air temperature is 30 C or above 13 3 2 Outdoor Air Temperature Control The maximum current value is regulated when the outdoor air temperature rises above 14 C in order to avoid compressor overloading Current Regulated 14 C 12 C Free within Max Limit Outdoor Air Temperature 13 3 3 Overload Protection Control e The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures If the heat exchanger temperature exceeds 60 C compressor will stop RE18QK 60 C 60 C Frequency Reduce Frequency Reduced 550 55 Frequency Limited 52 Frequency Limited 49 C 49 C 46 C Free 46 C Indoor Heat
59. circuitry of IPM IPM overheats due to defective IPM temperature sensor Multi Models Only e Compressor OL connector poor contact e Compressor OL faulty Troubleshooting When F96 indication happens For safety reason and to prevent component breakdown always switch off the power Caution before remove and connect the component Check the outdoor unit installation condition during cooling or soft dry operation um Reinstall the outdoor unit 7 YES Is there any improper heat radiation Remove the obstacle s Clean the outdoor heat exchanger NO Is outdoor fan motor operating NO Replace the outdoor fan motor YES Defect in IPM Replace the outdoor unit PCB 76 15 5 26 F97 Compressor Overheating Malfunction Decision Conditions During operation of cooling and heating when compressor tank temperature data 112 C is detected by the compressor tank temperature sensor Malfunction Caused e Refrigerant shortage refrigerant leakage e 2 3 way valve closed e Detection error due to faulty compressor tank temperature sensor Troubleshooting When 97 indication happens Check the compressor tank temperature sensor Does it conform to the sensor characteristic chart YES 2 3 way valve closed NO Check for gas leakage Oil oozing out from the 2 3 way valve NO Capillary tube or dryer clogged NO Charge for a specified amount of fresh refrigerant Refrigerant cyc
60. d However if total outdoor unit running current exceeds Y value compressor will be stopped immediately for three minutes RE18QKE RE24QKE Operation Mode X A Y A X A Y A 11 73 14 52 Cooling Soft Dry A Cooling Soft Dry B 8 82 12 31 14 67 19 04 Cooling Soft Dry 12 31 The first 30 minutes of cooling operation A will be applied 38 5 C Outdoor air temperature Outdoor air temperature RE18QK RE24QK IPM Power transistor Prevention Control e Overheating Prevention Control O When the IPM temperature rises to 120 RE18QK and 110 C RE24QK compressor operation will stop immediately Compressor operation restarts after three minutes the temperature decreases to 110 C RE18QK and 95 C RE24QK If this condition repeats continuously 4 times within 20 minutes timer LED will be blinking F96 is indicated e DC Peak Current Control O When electric current to IPM exceeds set value of 30 0 5 0 A the compressor will stop operate Then operation will restart after three minutes If the set value is exceeded again more than 30 seconds after the compressor starts the operation will restart after one minute If the set value is exceeded again within 30 seconds after the compressor starts the operation will restart after one minute If this condition repeats continuously for seven times all indoor and outdoor relays will be cut off timer LED will be blinking F99 is i
61. d operation will start operate earlier than the set time as shown below Indoor intake air Indoor intake air temperature C temperature C 15 min 25 min 30 15 25 5 Outdoor air Outdoor air 30 35 temperature C temperature 12 4 OFF Timer Control OFF timer can be set using remote control the unit with timer set will stop operate at set time 12 5 Auto Restart Control 1 When the power supply is cut off during the operation of air conditioner the compressor will re operate within three to four minutes there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly after power supply resumes 2 This type of control is not applicable during ON OFF Timer setting 3 This control can be omitted by short the circuit of JP1 at indoor unit printed circuit board 40 13 Protection Control 13 7 Protection Control For All Operations 13 1 1 O O Time Delay Safety Control The compressor will not start for three minutes after stop of operation This control is not applicable if the power supply is cut off and on again or after 4 way valve deices condition 13 1 2 Total Running Current Control 1 2 3 4 13 1 3 When the outdoor unit total running current AC exceeds X value the frequency instructed for compressor operation will be decreased If the running current does not exceed X value for five seconds the frequency instructed will be increase
62. e standby units heat exchanger sensor lead wire and connector open circuit e Expansion valve and lead wire and connector Diagnosis Abnormality Abnormality Protection Problem Check location display Protection control Judgment Operation H70 H98 F90 Wrong wiring and connecting pipe expansion valve abnormality Abnormal wiring or piping connection Continuous for 25s Continuous for 1 minutes Continuous for 24 hours 15days ECONAVI sensor abnormality Outdoor high pressure sensor abnormality Light sensor abnormality ECONAVI sensor open or short circuit High pressure sensor open circuit during compressor stop Light sensor open or short circuit Outdoor fan motor lock or feedback abnormal Outdoor fan motor mechanism lock 2 times happen within 30 minutes Indoor freeze protection 4 times happen 4 way valve switching within 30 minutes abnormal Wrong wiring and connecting pipe expansion valve leakage indoor heat exchanger sensor open circuit Indoor high pressure protection Indoor high pressure protection Heating Indoor operating unit freeze protection 4 way valve switching abnormality Indoor standby units freezing abnormality 3 times happen within 40 minutes Power factor correction 4 times happen Power factor correction PFC circuit within 10 minutes circuit abnormal protection e Check indoor outdoor connection wire and connection pipe e Expansion v
63. e drain hose VP 20 PVC tube drain hose VP 30 More than 700 mm PVC tube for drain hose For the right piping follow the same procedure 11 2 4 Connect the Cable to the Indoor Unit The power supply cord indoor and outdoor unit connection cable can be connected without removing the front grille Install the indoor unit on the installing holder that mounted on the wall 2 Open the front panel and grille door by loosening the screw 3 Cable connection to the power supply through Isolating Devices Disconnecting means Connect approved type polychloroprene sheathed power supply cord 1 5 mm 1 0 1 75HP 3 x 2 5 2 0 2 5HP type designation 60245 IEC 57 or heavier cord to the terminal board and connect the others end of the cord to Isolating Devices Disconnecting means not use joint power supply cord Replace the wire if the existing wire from concealed wiring otherwise is too short o In unavoidable case joining of power supply cord between isolating devices and terminal board of air conditioner shall be done by using approved socket and plug with earth pin rated 15 16 20A Wiring work to both socket and plug must follow to national wiring standard 4 Bind all the power supply cord lead wire with tape and route the power supply cord via the left escapement 5 Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1 5 mm 1 0
64. e the resistance of the indoor heat exchanger temperature thermistor Defect in indoor pipe temperature thermistor Replace the indoor pipe temperature thermistor Is the measured resistance of the indoor pipe temperature NO thermistor matches the value specified in its characteristic chart YES Check the piping amp installation condition Replace piping reinstall the unit if necessary 68 15 5 18 H99 Indoor Freeze Prevention Protection Cooling or Soft Dry Error code will not display no TIMER LED blinking but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place when indoor pipe temperature is lower than 2 Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting When abnormality indication starts again Check the air passage Is there any short circuit YES e Provide sufficient air passage Z O Check the air filter Clean the air filter Is the air filter dirty Z Check the dust accumulation the indoor unit heat exchanger YES Clean the indoor unit heat Is the indoor unit heat exchanger dirty exchanger Z O Check the indoor heat exchanger temperature sensor Z O Does it conform to the sensor characteristic chart e Replace the
65. ew gt at Left piping hole Indoor Unit amp Remote Control lt Top View gt Air intake direction Air outlet direction 748 Installation Indoor unit external dimensions line piping hole piping 10 lt Side View gt Right piping hole lt Remote Control Transmitter gt 13 3 264 3 5 2 Outdoor Unit 5 2 1 CU RE18QKE Space necessary for lt Top View gt installation 77 22 34 5 Anchor Bolt Pitch 360 5 x 613 2 way valve at Liquid side High Pressure 3 way valve at Gas side Low Pressure Front View Side View Side View 11 5 2 22 CU RE24QKE Top View gt Space necessary for installation 875 70 13 131 uii S a 613 gt Anchor Bolt Pitch 360 5 x 613 lt Side View gt lt Side View gt SS mmus Se CN RU SEEN 12 6 Refrigeration Cycle Diagram 6 1 1 CS RE18QKE CU RE18QKE INDOOR OUTDOOR LIQUID EXPANSION DES VALVE RECEIVER 3 344 lt 29 SENSOR TEMP SENSOR EVA INLET INTAKE
66. f the outdoor discharge pipe temperature sensor Defect in outdoor discharge pipe temperature sensor Is the measured resistance of the outdoor liquid pipe temperature sensor matches the value specified in its characteristic chart Replace the outdoor discharge pipe temperature sensor YES Defect in outdoor unit PCB Replace the outdoor unit PCB 66 15 5 16 H97 Outdoor Fan Motor DC Motor Mechanism Locked Malfunction Decision Conditions e The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall malfunction Operation error due to faulty outdoor unit PCB Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown always switch Caution off the power before remove and Turn off power supply and rotate fan by hand connect the component NO Does fan rotate smoothly Replace fan motor YES Turn power supply on and operate fan Does it rotate Stop fan motor Turn off power supply and disconnect fan motor connector then turn power on Check the output of fan motor from indoor PCB Is the motor power supply voltage 325Vdc pin 7 amp 4 generated
67. fet a Normal difference air temperatures More than 8 15 minutes after an operation is started at cooling mode Above 14 C 15 minutes after an operation is started at heating mode Less than 8 C at the cooling mode Less than 14 C at the heating mode Value of electric Higher than specified Dusty condenser e Measuring electric current preventing heat radiation during operation current during operation Lower than specified Gas side Cooling Mode High pressure Heating Mode 47 15 2 Relationship Between Condition Of The Conditioner Pressure And Electric Current Condition of the Cooling Mode Heating Mode air conditioner Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current during operation during operation Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Heat radiation deficiency of the outdoor unit Carry out the measurements of pressure electric current and temperature fifteen minutes after an operation is started 48 15 3 Breakdown Self Diagnosis Function 15 3 1 Self Diagnosis Function Three Digits Alphanumeric Code 6 When the latest abnormality code on the main e Once abnormality has occurred during operation the unit will stop its operation and Timer LEDs blink e Although Timer LED goes off when power supply is turned off if the unit is operated under a breakdown condition the
68. fied in its characteristic chart Replace the indoor intake air temperature sensor YES Defect in indoor unit PCB Replace the indoor unit PCB sensor Thermistor Characteristics Resistance Temperature C 54 15 5 4 H15 Compressor Temperature Sensor Abnormality Malfunction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection e Turn off the power Check the connector connection For safety reason and to prevent component breakdown always switch off the power Caution before remove and connect the component NO Is the connector connection normal 8 contact e Correct the connection Resistance Check the outdoor compressor temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor compressor temperature sensor Is the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart Defectin outdoor compressor temperature sensor e Replace the outdoor compressor temperature sensor YES e Defect in outdoor unit PC
69. il only Measure continuity of the coil OK Measure voltage supplied to CH HOT at the start of heating No supply Outdoor PCB fault e Replace Outdoor PCB Check gas side pipe for hot gas flow in cooling mode 70 For safety reason and to prevent component breakdown always switch off the power before remove and connect the component 4 WAYS VALVE YELLOW COIL COMPLETE No Good e Reconnect CN HOT 4 way valve connector No Good e Attach and screw the V coil to solenoid valve No continuity open usi V coil fault URS e Replace VALVE CN HOT VH9 2 OK Depending on 4 way valve model Reverse solenoid valve faulty e Replace the 4 way valve 15 5 20 F17 Indoor Standby Units Freezing Abnormality Malfunction Decision Conditions pipe temperature is below 1 0 C Remark When the different between indoor intake air temperature and indoor pipe temperature is above 10 C or indoor When the indoor standby unit is freezing the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit s Malfunction Caused e Wrong wiring connection e Faulty sensor e Faulty expansion valve Troubleshooting When abnormality starts again Check the indoor pipe temperature thermistor e Plug out connector CN TH from the indoor unit PCB Measure the resistance of the indoor heat exchanger temperature thermistor Is the measured resistance of
70. ing is in the room where dew may form please increase the insulation by using POLY E FOAM with thickness 6 mm or above 11 3 5 1 Cutting and flaring the piping 1 Please cut using pipe cutter and then remove the burrs 2 Remove the burrs by using reamer If burrs are not removed gas leakage may be caused Turn the piping end down to avoid the metal powder entering the pipe 3 Please make flare after inserting the flare nut onto the copper pipes m Improper flaring m a Mas Inclined S rface damaged thickness Clam en Red arrow mark Copper When properly flared the internal surface of the flare will evenly shine be of even thickness 1 To cut 2 To remove burrs 3 To flare Since the flare part comes into contact with the connections carefully check the flare finish 35 12 Operation and Control 12 1 Basic Function Inverter control which equipped with a microcomputer in determining the most suitable operation mode as time passes automatically adjusts output power for maximum comfort always In order to achieve the suitable operation mode the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and i
71. ir Temperature Internal Setting Temperature gt Compressor OFF point 12 1 4 Heating Operation 12 1 4 1 Thermostat control e Compressor is OFF when Intake Air Temperature Internal Setting Temperature gt 2 0 C continued for 3 minutes e Compressor is ON after waiting for 3 minutes if the Intake Air Temperature Internal Setting Temperature lt Compressor OFF point 12 1 5 e This mode set using remote control and the operation is decided by remote control setting temperature remote control operation mode and indoor intake air temperature e During operation mode judgment indoor fan motor with speed of Lo is running for 30 seconds to detect the indoor intake air temperature e Every 10 minutes the indoor temperature is judged For the 1st judgment 1 If indoor intake temperature remote control setting temperature gt 2 C COOL mode is decided 2 If 2 C lt indoor intake temperature remote control setting temperature lt 2 C DRY mode is decided 3 If indoor intake temperature remote control setting temperature lt 2 C HEAT mode is decided For the 2nd judgment onwards 1 If indoor intake temperature remote control setting temperature gt 3 C if previous operate in DRY mode then continue in DRY mode otherwise COOL mode is decided 2 If 2 C lt indoor intake temperature remote control setting temperature lt 3 C maintain with previous mode 3 If
72. ir conditioner is stopped using remote control the vane will shift to close position Side View 58 C 50 C 36 C 30 C Indoor Heat Exchanger Temperature Close position 12 2 2 Horizontal Airflow 1 Automatic horizontal airflow direction can be set using remote control the vane swings left and right within the angles as stated below does not swing during fan motor stop For heating mode operation the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below Operation Mode Vane Angle 68 115 Heating with heat exchanger temperature B oo Cooling and Soft Dry 68 115 40 fix front Indoor Heat Exchanger Temperature 2 Manual horizontal airflow direction can be set using remote control the angles of the vane are as stated below and the positions of the vane are as Figure 2 above Pattern Airflow Direction Patterns at Remote Control Vane Angle 39 12 3 ON timer can be set using remote control the unit with timer will start operate earlier than the setting time This is to provide a comfortable environment when reaching the set ON time 60 minutes before the set time indoor at fan speed of Lo and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time From the above judgment the decide
73. is 80 16 2 Outdoor Electronic Controller Removal m 019 218 NETTE 85 17 Technical Data 87 17 1 Cool Mode Performance Data 87 17 2 Heat Mode Performance Data 88 T8 Service Data 89 18 1 Cool Mode Outdoor Air Temperature 5 89 18 2 Mode Outdoor Air Temperature 5 91 18 3 Piping Length Correction Factor 93 19 Exploded View and Replacement Parts List 94 19 1 Indoor 94 19 2 Outdoor 97 1 Safety Precautions e Read the following SAFETY PRECAUTIONS carefully before perform any servicing e Electrical work must be installed or serviced by a licensed electrician Be sure to use the correct rating of the power plug and main circuit for the model installed e The caution items stated here must be followed because these important contents are related to safety The meaning of each indication used is as below Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage and the seriousness is classified by the following indications WARNING This indication shows the possibility of causing death or serious injury
74. lace the outdoor fan motor Check the outdoor heat exchanger thermistor e Turn off the power and disconnect the connector of outdoor heat exchanger YES Is the voltage supplied to the outdoor OV e Defect in outdoor unit fan motor normal e Replace the outdoor unit PCB For safety reason and to prevent component thermistor from the PCB Measure the resistance olihe breakdown always switch the power before heat exchanger thermistor Caution remove and connect the component e Defect in outdoor heat exchanger Is the measured resistance of the outdoor thermistor heat exchanger thermistor matches the value specified in its characteristic chart e Replace the outdoor heat exchanger thermistor YES e Defect in outdoor unit PCB e Replace the outdoor unit PCB 75 15 5 25 F96 IPM Overheating Malfunction Decision Conditions e During operating of cooling and heating when IPM temperature data 100 C is detected by the IPM temperature sensor Multi Models Only Compressor Overheating During operation of cooling and heating when the compressor OL is activated Heat Sink Overheating During operation of cooling and heating when heat sink temperature data 90 C is detected by the heat sink temperature sensor Malfunction Caused IPM overheats due to short circuit of hot discharge air flow e IPM overheats due to defective of outdoor fan motor e IPM overheats due to defective of internal
75. le abnormality error again NO NO YES XB YES YES 77 For safety reason and to prevent component breakdown always switch off the power Caution before remove and connect the component Replace the compressor tank temperature sensor e Open the 2 3 way valve e Repair the pipe flare or union nuts Reclaim and recharge refrigerant Replace the capillary tube or dryer e Replace outdoor unit PCB Replace outdoor unit compressor 15 5 27 F98 Input Over Current Detection Malfunction Decision Conditions During operation of cooling and heating when an input over current X value in Total Running Current Control is detected by checking the input current value being detected by current transformer CT with the compressor running Malfunction Caused Over current due to compressor failure Over current due to defective outdoor unit PCB Over current due to defective inverter main circuit electrolytic capacitor Over current due to excessive refrigerant Troubleshooting When F98 indication happens For safety reason and to prevent component breakdown always switch off the power Caution before remove and connect the component Get restarted and measure the input current Input current 16 8A NO Replace the outdoor unit PCB YES Turn off power supply Check the main circuit electrolytic capacitor Normal YES Repair the pipe
76. ling should more than From installation plate center to unit s left side is G From installation plate center to unit s right side is For left side piping piping connection for liquid should be about from this line For left side piping piping connection for gas should be about from this line 1 Mount the installation plate on the wall with 5 screws or more at least 5 screws If mounting the unit on the concrete wall consider using anchor bolts o Always mount the installation plate horizontally by aligning the marking off line with the thread and using a level gauge 2 Drill the piping plate hole with 070 mm hole core drill o Line according to the left and right side of the installation plate The meeting point of the extended line is the center of the hole Another method is by putting measuring tape at position as shown in the diagram above The hole center is obtained by measuring the distance namely 128 mm for left and right hole respectively o Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor side 11 2 2 To Drill a Hole in the Wall and Install a Sleeve of Piping 1 Insert the piping sleeve to the hole 2 Fix the bushing to the sleeve 15 mm 3 Cutthe sleeve until it extrudes about 15 mm Sleeve from the wall for tube assembly wnen the wall is hollow please be sure to use the sleeve for tube assembly to prevent dangers caused by mice biting
77. m Locked Malfunction Decision Conditions e The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor feedback of rotation gt 2550rpm or lt 50 Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall malfunction Operation error due to faulty indoor unit PCB Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown always switch Caution off the power before remove and Turn off power supply and rotate fan by hand connect the component NO Does fan rotate smoothly e Replace fan motor YES Turn power supply on and operate fan Does it rotate Mais Stop fan motor Turn off power supply and disconnect fan motor connector Check the rotation feedback output from fan motor then turn power on Check the output of fan motor from indoor PCB Rotate the fan motor by hand is the rotation feedback voltage 15Vdc pin 7 amp 4 generated Is the motor power supply voltage 325Vdc pin 1 amp 4 generated Is the motor control voltage 15Vdc pin 5 amp 4 generated Operate the fan is the rotation command voltage 1 5Vdc pin 6 amp 4 generated NO e Replace indoor Replace fan motor 97 15
78. n happens For safety reason and to prevent component breakdown always switch off the power Caution before remove and connect the component Turn off power supply Disconnect U V and W wires Check with inverter checker Normal NO e defective Replace outdoor unit PCB e Replace compressor 74 15 5 24 F95 Outdoor High Pressure Protection Cooling or Soft Dry Malfunction Decision Conditions e During operation of cooling or soft dry when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor Malfunction Caused Outdoor heat exchanger temperature rise due to short circuit of hot discharge air flow Outdoor heat exchanger temperature rise due to defective of outdoor fan motor Outdoor heat exchange temperature rise due to defective outdoor heat exchanger thermistor Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB Troubleshooting When abnormality indication starts again Check the outdoor unit installation condition during cooling or soft dry operation YES e Reinstall the outdoor unit e Remove the obstacle s e Clean the outdoor heat exchanger Is there any improper heat radiation NO Reset the error code and turn on the unit again NO Measure the AC DC voltage between pins of connector CN FM outdoor unit PCB Is the outdoor fan motor operating YES 240VAC 265 325VDC e Defect in outdoor fan motor e Rep
79. ndicated 41 13 1 4 Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor top temperature The changes of frequency are as below figure lf compressor discharge temperature exceeds 107 C RE18QK and 112 C RE24QK compressor will be stop occurs 4 times per 20 minutes timer LED will be blinking 97 is to be confirmed Compressor OFF Compressor OFF 107C 110 C 97 C Compressor Frequency Ses Compressor 103 C _ Reduce Frequency Reduced 105 C Compressor Frequency Compressor 100 Maintain Frequency Maintain 90 C 85 C 95 C Comp Discharge temperature Comp temperature Comp Discharge temperature RE18QK RE24QK 13 1 5 Low Pressure Prevention Control Gas Leakage Detection e Control start conditions For 5 minutes the compressor continuously operates and outdoor total current is between 1 38A and 1 65 RE18QK only o For 5 minutes the compressor continuously operates and outdoor total current is between 1 88A 2 85A Cooling 2 85A 3 57A Heating RE24QK only o During Cooling and Soft Dry operations Indoor suction temperature indoor piping temperature is below 4 C o During Heating operations Indoor piping temperature indoor suction is under 5 C Control contents o Compressor stops and restart after 3 minutes Ifthe conditions above happen 2 times
80. nt component breakdown always switch off the power Caution before remove and connect the component Measure the winding resistance between U V V W and W U YES Compressor defective due to mechanical locked Replace compressor Are the compressor s winding resistance NO Normal U V V W or U W shorted Compressor defective due to winding shorted Replace compressor e Checking the power transistor e Never touch any live parts for at least 10 minutes after turning off the circuit breaker f unavoidable necessary to touch a live part make sure the power transistor s supply voltage is below 50V using the tester Forthe UVW make measurement at the Faston terminal on the board of the relay connector Tester s negative terminal Power transistor UVW Power transistor UVW Tester s positive terminal UVW Power transistor UVW Power transistor Normal resistance Several kO to several MO 79 16 Disassembly and Assembly Instructions WARNING High Voltage are generated in the electrical parts area by the capacitor Ensure that the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks 16 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures 16 1 1 To remove front grille 7 3 Hold both sides of the front grille and remove it by pulling up and toward yo
81. ntake air temperature 12 1 1 Internal Setting Temperature Once the operation starts remote control setting temperature will be taken as base value for temperature shifting processes These shifting processes are depending on the air conditioner settings and the operation environment The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit Remote Control Setting Temperature 16 C 30 C Auto Operation Mode Shifting Y Setting Temperature Limit Checking Min 16 30 Outdoor Air Temperature Shifting Setting Temperature Limit Checking Min 16 C Max 30 C Internal Setting Temperature 12 1 2 Cooling Operation 12 1 2 1 Thermostat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature lt 1 5 C continue for 3 minutes e When compressor is OFF Thermostat OFF and AUTO FAN is set the fan will stop periodically Compressor is ON after waiting for 3 minutes if the Intake Air Temperature Internal Setting Temperature gt Compressor OFF point 12 1 3 Soft Dry Operation 12 1 3 1 Thermostat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature lt 2 0 continue for 3 minutes When compressor is OFF Thermostat OFF and AUTO FAN is set the fan will stop periodically Compressor is ON after waiting for 3 minutes if the Intake A
82. o 7 4111 gt J127 SN PTCi RY AC A WHT 5 CN TAN CN DIS AN 38 4162 mmo CN TH1 J179 oam o 4211 J146 oam J133 oao 4216 m OD 190 5 124 116 5 4101 R180 8410 o fo 1 2 4197 FUSE1 a R33 o E o T 204 CN V2 34 C29 pu e 205 i So B wegl SSe D20 2 55552 2025 2554 amp hel 2 5555 6 2 ES i 5 5 2 gt 9 00 8 205 c eus oa a 9261 camo 9263 C124 o 4257 4278 7 c e o o 2 50 4 21 LJP111 oam o P 1 c121 0330 181 6 Em l 4129 00251 7 5 031 174 oam o om 4114 9 21 CN CPU SW a i J232 559 o J215 campo camo 1755 x1 JT 2 2310 o 2010 J 30cemmmo 090904287 53 52 4308 3 d 7 ommo 5 CK CC J 154 gt 2 oam J178 382 5 4252 9 N 5 20 4 D aeo 6121 ommo 183 9100 ommo CN NMODE E JAAS C248 J106 5 c 149 9 zl 4291 11 C69
83. oor Noise L Power Level dB 61 Low Temp Capacity kW W 5 80 2 35k 2 47 7 17 2 77k 2 59 Extr Low Temp Capacity KW 1 W COP 4 98 2 41k 2 07 6 13 2 75k 2 23 Max Current A Max Input Power W 11 4 2 60k 14 5 3 13k Starting Current A 6 9 11 7 NO Outdoor Noise L Hermetic Motor Rotary Type Compressor Motor Type Output Power DC Transistor 8 poles DC Transistor 8 poles 40 1000 BA rpm _____ 8 5 Input Power 8 pee Moisture Removal L h Pt h 2 8 5 9 3 9 8 2 m min ft min 12 65 447 12 08 427 m min ft min 14 25 503 13 34 471 indt Cool m min ft min 14 45 510 15 30 540 m min ft min 16 30 575 18 40 650 m min 17 90 630 m min 39 2 1385 Airflow m min ft min 37 9 1340 x cS Refrigerant Type g oz 24104 1 22 43 1 24104 1 80k 63 5 Indoor Fan Outdoor Fan m min ft min Height I D O D mm inch 290 11 7 16 695 27 3 8 290 11 7 16 795 31 5 16 Dimension Width I D O D mm inch 1070 42 5 32 875 34 15 32 1070 42 5 32 875 34 15 32 Depth I D O D mm inch 240 9 15 32 320 12 5 8 240 9 15 32 320 12 5 8 kg Ib 12 26 46 101 12 26 67 148 ipe Di Liquid Gas mm inch 6 35 1 4
84. or errors Malfunction Caused Faulty connector connection Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection For safety reason and to prevent Turn off the power A component breakdown always switch Check the connector connection Caution off the power before remove and connect the component Is the connector connection normal NO e Connector poor contact Correct the connection YES Check the outdoor discharge pipe temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor discharge pipe temperature sensor Defect in outdoor discharge pipe temperature sensor Is the measured resistance of the outdoor heat exchanger temperature sensor matches the value specified in its characteristic chart Replace the outdoor discharge pipe temperature sensor YES e Defect in outdoor unit PCB Replace the outdoor unit PCB 62 15 5 12 H33 Unspecified Voltage between Indoor and Outdoor Malfunction Decision Conditions e The supply power is detected for its requirement by the indoor outdoor transmission Malfunction Caused e Wrong models interconnected e Wrong indoor unit and outdoor unit PCBs used e Indoor unit or outdoor unit PCB defective Troubleshooting When abnormality indication starts For safety reason and to prevent again component breakdown always switch Caution
85. ower on Press the CHECK button on the remote controller continuously for 5 seconds will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking Press the TIMER A or V button on the remote controller The code HOO no abnormality will be displayed and signal will be transmitted to the main unit The power LED lights up If no abnormality is stored in the memory three beeps sound will be heard Every press of the button up or down will increase abnormality numbers and transmit abnormality code signal to the main unit 49 Check button 5 e unit code transmitted from the remote controller are matched power LED will light up for 30 seconds and a beep sound continuously for 4 seconds will be heard If no codes are matched power LED will light up for 0 5 seconds and no sound will be heard The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds The same diagnosis can be repeated by turning power on again le OFF SET CHECK 15 34 Clear Memorized Error Protective Operation Status after Repair Turn power on in standby condition Press the AUTO button for 5 seconds A beep receiving sound on the main unit to operate the
86. r is detected Operation stops and cannot on back 12 1 7 Outdoor Fan Motor Operation Outdoor fan motor is operated with one fan speed only It starts when compressor starts operation and it stops 30 seconds after compressor stops operation ON ON Compressor OFF ON Fan Speed ON Outdoor Fan 5 30 sec OFF 12 2 Airflow Direction 1 There two types of airflow vertical airflow directed by horizontal vane and horizontal airflow directed by vertical vanes 2 Control of airflow direction can be automatic angles of direction is determined by operation mode heat exchanger temperature and intake air temperature and manual angles of direction can be adjusted using remote control 12 2 1 Vertical Airflow Vane Angle Operation Mode i Usual Ventilation Auto Control with dew Usual Ventilation i ma ps m 5 1 Automatic vertical airflow direction can be set using remote control the vane swings up and down within the angles as stated above For heating mode operation the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below It does not swing during fan motor stop When the air conditioner is stopped using remote control the vane will shift to close position 38 2 Manual vertical airflow direction be set using remote control the angles of the vane as stated above and the positions of the vane are as Figure 2 below When the a
87. r unit at veranda of high rise building child may climb up to outdoor unit and cross over the handrail and causing accident This equipment must be properly earthed Earth line must not be connected to gas pipe water pipe earth of lightning rod and telephone Otherwise it may cause electric shock in case equipment breakdown or insulation breakdown Keep away from small children the thin film may cling to nose and mouth and prevent breathing Do not use unspecified cord modified cord joint cord or extension cord for power supply cord Do not share the single outlet with other electrical appliances Poor contact poor insulation or over current will cause electrical shock or fire Tighten the flare nut with torque wrench according to specified method If the flare nut is over tightened after a long period the gt flare may break and cause refrigerant gas leakage For R410A model use piping flare nut and tools which is specified for R410A refrigerant Using of existing R22 piping flare nut and tools may cause abnormally high pressure in the refrigerant cycle piping and possibly result in explosion and injury Thickness or copper pipes used with R410A must be more than 0 8 mm Never use copper pipes thinner than 0 8 mm It is desirable that the amount of residual oil less than 40 mg 10 m During installation install the refrigerant piping properly before run the compressor Operation of compressor without fixing refrigeration
88. ration system Total running current 3 times happen within 20 minutes Continuous happen for 7 times Total current protection protection Outdoor direct current DC peak detection Power transistor module current protection 51 Power source compressor lock e Power transistor module faulty or compressor lock 15 5 Self diagnosis Method 15 5 4 H11 Indoor Outdoor Abnormal Communication Malfunction Decision Conditions e During startup and operation of cooling and heating the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal Malfunction Caused Faulty indoor unit PCB Faulty outdoor unit PCB Indoor unit outdoor unit signal transmission error due to wiring error Indoor unit outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown always switch Caution off the power before remove and Measure the AC voltage at terminal 1 amp 2 of outdoor unit connect the component terminal board NO Is the measured voltage 230 240V e power supply abnormal fluctuation Measure the DC voltage at terminal 2 amp 3 communication terminals of outdoor unit terminal board lt m Defect communication circuitry of outdoor unit PCB Replace the PCB
89. revent e Turn off the power component breakdown always switch e Check the connector connection Caution off the power before remove and connect the component Is the connector connection normal NO Connector poor contact e Correct the connection YES Check the outdoor discharge pipe temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor discharge pipe temperature sensor Defect in outdoor discharge pipe temperature sensor 15 the measured resistance of the outdoor gas pipe temperature sensor matches the value specified in its Replace the outdoor discharge pipe characteristic chart temperature sensor YES e Defect in outdoor unit PCB Replace the outdoor unit PCB 64 15 5 14 H36 Outdoor Gas Pipe Sensor Abnormality Malfunction Decision Conditions e During startup and operation of cooling and heating the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors Malfunction Caused e Faulty connector connection e Faulty sensor e Faulty PCB Troubleshooting When abnormality indication starts again Check the connector connection For safety reason and to prevent e Turn off the power component breakdown always switch e Check the connector connection Caution off the power before remove and connect the component the connector connection normal NO
90. ring piping work for installation and reinstallation Take care of the liquid refrigerant it may cause frostbite 34 11 3 4 Connect the Cable to the Outdoor Unit 1 Remove the control board cover from the unit by loosening the screw 2 Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1 5 1 0 1 75 or 4 x 2 5 2 0 2 5HP flexible Earth Wire cord type designation 60245 IEC 57 or longer than heavier cord Do not use joint connection others AC cable Replace the wire if the existing wire wires for from concealed wiring or otherwise is too safety reason short Allowable connection cable length of each indoor unit shall be 30 m or less Indoor and outdoor cable connection 3 Secure the cable onto the control board with the holder clamper Indoor Unit A Attach the control board cover back to the original position with screw 5 For wire stripping and connection requirement WARNING refer to instruction 11 2 4 of indoor unit This equipment must properly earthed Earth wire shall be Yellow Green Y G in colour and longer than other AC wires for safety reason 11 3 5 Piping Insulation 1 Please carry out insulation at pipe connection portion as mentioned in Indoor Outdoor Unit Installation Diagram Please wrap the insulated piping end to prevent water from going inside the piping 2 If drain hose or connecting pip
91. rk follow the local national wiring standard regulation and the installation instruction An independent circuit and single outlet must be used If electrical circuit capacity is not enough or defect found in electrical work it will cause electrical shock or fire This equipment is strongly recommended to install with Earth Leakage Circuit Breaker ELCB or Residual Current Device RCD Otherwise it may cause electrical shock and fire in case equipment breakdown or insulation breakdown Do not use joint cable for indoor outdoor connection cable Use the specified Indoor Outdoor connection cable refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor outdoor connection Clamp the cable so that no external force will be acted on the terminal If connecting or fixing is not perfect it will cause heat up or fire at the connection Wire routing must be properly arranged so that control board cover is fixed properly If control board cover is not fixed perfectly it will cause heat up or fire at the connection point of terminal fire or electrical shock When install or relocate air conditioner do not let any substance other than the specified refrigerant eg air etc mix into refrigeration cycle piping Mixing of air etc will cause abnormal high pressure in refrigeration cycle and result in explosion injury etc Do not install outdoor unit near handrail of veranda When installing air conditione
92. rting flare nut locate at joint portion of tube assembly onto the copper pipe In case of using long piping Connect the piping e Align the center of piping and sufficiently tighten the flare nut with fingers e Further tighten the flare nut with torque wrench in specified torque as stated in the table 11 3 2 2 Connecting the Piping to Outdoor Decide piping length and then cut by using pipe cutter Remove burrs from cut edge Make flare after inserting the flare nut located at valve onto the copper pipe Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table 33 Model A B C D RE9 UE9 YE9 570 mm 105 mm 18 5 mm 320mm UETZ RE12 RE15 540 mm UE18 RE18 613 131 mm 16mm 360 5 mm RE24 160 mm 18 5 mm 330 mm Do not overtighten overtightening may cause gas leakage 6 35 mm 1 4 18 1 8 kgf m 9 52 mm 3 8 42 4 3 kgf m 12 7 mm 1 2 55 5 6 kgf m 15 88 mm 5 8 65 6 6 kgf m 19 05 mm 3 4 100 10 2 kgf m Torque wrench opanner or Wrench 11 33 Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure Indoor unit Outdoor unit 2220 E Vacuum Pana Pana xis gem 1 Connect
93. ted Circuit Board ss m Fes at ery m o 4l Ji T ne Jumper D1 Jumper B D2 Remote Control No J is A 1 2 2 8 Short with diode A Default Ems 2H Sa 022 Open Open O Short with diode Short with diode Short with diode Diode is field supplied Part number SOD 323 IN4148WS LMDL914T1G During Remote Control Number Switch Mode press any button at remote control to transmit and store the transmission code to the EEPROM 45 4 REMOTE CONTROL RECEIVING SOUND The Remote Control Receiving Sound OFF ON Mode will be activated if the Auto OFF ON button is pressed continuously for more than 16 seconds 4 beep sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off On Mode is in standby condition and press AC Reset button at remote control Press Auto OFF ON button to toggle remote control receiving sound Short beep Turn OFF remote control receiving sound Long beep Turn ON remote control receiving sound After Auto OFF ON button is pressed the 20 seconds counter for Remote Control Receiving Sound OFF ON Mode 15 restarted 14 2 Remote Control Button 14 2 1 SET BUTTON ocheck remote control transmission code and store the transmission code to EEPROM o Press SET button for more than 10 seconds by using pointer o Press TIMER SET button unit a beep so
94. ter into the heat exchanger X Vinyl tape Attaching the remote control holder to the wall Remote control holder fixing screws 6 Remote control C e Saddle Remote control holder 5 It is advisable to avoid more than 2 blockage directions For better ventilation amp multiple outdoor installation please consult authorized dealer specialist Connection cable Liquid side piping Gas side piping This illustration is for explanation purposes only The indoor unit will actually face a different way 11 2 Indoor Unit 11 2 1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration Wall Wall Wall 7 More than 1 More than 1 N More 2 screw v than 2 Measuring XT For best strength of O TORPE ce SS INDOOR unit installation Here it is highly recommended 8 a to locate at 5 position as shown p NK Model RE9 UE9 YE9 RE12 0 12 YE 12 490 mm 82 mm 439 mm 432 mm 43 mm 95 mm RE15 RE18 UE18 RE24 590mm 532 mm 532 169mm 169mm 219mm 219mm The center of installation plate should be at more than at right and left of the wall The distance from installation plate edge to cei
95. the indoor pipe temperature thermistor matches the value specified in its characteristic chart Caution For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Defect in indoor pipe temperature thermistor Replace the indoor pipe temperature thermistor YES YES Problem occurs in heating mode only NO it happen in cooling dry as well YES 4 WAYS VALVE Is 4 way solenoid valve being energised Outdoor PCB fault 4 way valve not working SE Replace not energize NO Outdoor PCB 4 may been damaged wrongly connected between discharge and suction tube e Check connecting tubes to 4 way valve COIL COMPLETE No Check CN HOT Good connection e Reconnect CN HOT 4 way valve connector 4 way valve connector OK No Good attach to e Attach and screw the V coil solenoid valve to solenoid valve OK No continuity Coi open eee ves v coll cope V coil fault 4 WAYS continuity e Replace VALVE VH9 2 Remove V collonly Measure continuity of the coil OK OK Depending on 4 way valve model Reverse solenoid valve faulty e Replace the 4 way valve Measure voltage supplied to CH HOT at the start of heating No supply Outdoor PCB fault e Replace Outdoor PCB 71 15 5 24 F90 Power Factor Correction Protection Malfunction Decision Conditions
96. und is heard as confirmation of transmission code change 14 2 2 RESET RC e clear and restore the remote control setting to factory default o Press once to clear the memory 14 2 3 RESET AC To restore the unit s setting to factory default o Press once to restore the unit s setting 14 2 4 TIMER A indoor unit indicators LED intensity o Press continuously for 5 seconds 14 2 5 TIMER change remote control display from Degree Celsius to Degree Fahrenheit o Press continuously for 10 seconds 46 1 5 bleshooti ng Gu ide Normal Pressure and Outlet Air Temperature Standard Gas pressure Outlet air 15 1 Refrigeration Cycle System MPa kg cm G temperature C In order to diagnose malfunctions make sure that there are no electrical problems before inspecting the refrigeration cycle Cooling Mode 0 9 1 2 9 12 12 16 Such problems include insufficient insulation problem with the power source malfunction of a compressor and a fan Heating Mode 2 3 2 9 23 29 36 45 The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions the standard Condition Indoor fan speed High values for them are shown in the table on the right Outdoor temperature 35 C at cooling mode and 7 C at heating mode Compressor operates at rated frequency Difference in the intake e Measuring the air temperature and aut
97. unit and the terminal Nos are the same to the indoor s respectively Earth wire shall be Yellow Green Y G in colour and longer than other AC wires as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage Recommended 31 Wire stripping Conductor Conductor Conductor not WIRE STRIPPING Indoor outdoor fully inserted over inserted fully inserted CONNECTING connection 5 5 CR R gt loose strand om or more when inserted ACCEPT PROHIBITED PROHIBITED RISK OF FIRE JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE A WARNING Q Do not joint wires Use complete wire without joining Use approved socket and plug with earth pin Q Wire connection in this area must follow to national wiring rules 32 11 3 Outdoor Unit 11 3 4 Install the Outdoor Unit e After selecting the best location start installation according to Indoor Outdoor Unit Installation Diagram 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut 910 2 When installing at roof please consider strong wind and earthquake Please fasten the installation stand firmly with bolt or nails A B _ Ei ES O 8 11 3 2 Connect the Piping 11 3 2 1 Connecting the Piping to Indoor Please make flare after inse
98. unit at Forced Cooling Operation mode Press the CHECK button on the remote controller for about 1 second with a pointed object to transmit signal to main unit A beep sound is heard from main unit and the data is cleared 15 3 5 Temporary Operation Depending On Breakdown Status Press the AUTO button A beep receiving sound on the main unit to operate the unit Remote control will become possible The unit can temporarily be used until repaired Temporary ems H23 Operation with limited power H27 H28 Cooling Heating Cooling Heating 15 4 Error Codes Table Diagnosis Abnormality Abnormality Protection Problem Ch ckdoeation display Protection control Judgment Operation Indoor fan only Indoor outdoor operation can Indoor outdoor Indoor outdoor wire terminal After operation for H11 abnormal start by entering communication not Indoor outdoor PCB T 1 minute communication into force cooling establish Indoor outdoor connection wire operation Total indoor capability Indoor outdoor connection wire more than maximum limit Indoor unit capacity 90s after power Indoor outdoor PCB or less than minimum limit 2275774 unmatched supply ornurmberofindesr t Specification and combination table in catalogue less than two Indoor intake air Indoor intake air Indoor intake air temperature H14 temperature sensor Continuous for 5s temperature sensor open
99. urself gently 1 Lift to open the vertical vane and make intake grille gently 2 Remove 3 caps and 4 screws at the bottom of discharge vane and 1 screw at the front grille Figure 1 16 1 2 To remove horizontal vane 2 hooks left hand side 4 Remove the control board cover by releasing the 2 books Figure 2 80 16 1 3 remove electronic controller Pull out the Main Electronic Controller halfway Detach the Earth wire screw Remove screws to remove Terminal Board complete and earth wire aM 1 Detach CN DISP connector then remove the Indicator Complete Figure 3 9 Detach AC303 WHT and RY PWR Black and Brown wires from PCB then detach AC304 Red wire from Terminal Board Complete 4 AC303 G301 4 10 Detach connectors as labelled from the electronic controller Then pull out main controller gently CN RMT pee CN STM2 1 CN STM1 E Figure 4 81 16 1 4 discharge grille 4 12 Remove stepping motor lead wire connectors 2 pcs 11 Pull out to remove the drain hose from the discharge grille 13 Then pull the discharge grille downward gently to dismantle it Figure 5 16 1 5 To remove control board mm dA m Win Sm mmm Hom ml
100. ws from wall ceiling fence or other obstacles e Do not place any obstacles which may cause short circuit of the discharged air e f piping length is over the piping length for additional gas additional refrigerant should be added as shown in the table Piping Length Additional Model Refrigerant RES UES 1 0HP 9 52mm RE12 UE12 YE12 1 5 38 15 RE15 1 75 1 75HP 12 7mm 6 35mm UE18 m y 15 20HP 12 1 4 RE18 RE24 2 5 19 88 20 3 a 30 10 5 8 Example For RE9 If the unit is installed at 10 m distance the quantity of additional refrigerant should be 500 10 7 5 x 20 g m 50 g 27 11 1 3 Indoor Outdoor Unit Installation Diagram Attention not to bend up drain hose Piping direction Front side Right Right R P Right Left P Left bottom Rear Left bottom Installation parts you should purchase Installation plate Bushing Sleeve X Sleeve X Putty X Gum Type Sealer Bend the pipe as closely on the wall as possible but be careful that it doesn t break Left and right are identical Insulation of piping connections Power supply cord X Carry out insulation after checking for gas leaks and secure with vinyl tape Vinyl tape wide X Apply after carrying out a drainage test To carry out the drainage test remove the air filters and pour wa
101. ws of the Top Panel 4 Remove the Control Board Screws Top Panel Release the Hooks Screws Screws Control Board 4 2 4 Release 6 connectors NE Release 3 terminal connectors Release 2 ground wire Fig 1 2 Remove the 8 screws of the Front Panel Fig 4 Screws 5 Remove the 6 screws of the Electronic Controller Screws Front Panel Screws Fig 2 Electronic Controller 3 Remove the Top Cover of the Electronic Controller Fig 5 Hooks Caution When handling electronic controller be careful of electrostatic discharge Fig 3 85 16 2 2 CU RE24QKE 1 Remove the 8 screws of the Top Panel Screws Screws Helease 7 terminal connectors Release the hooks Control board Screws connectors Fig 4 5 Remove the 6 screws of the Electronic Controller Screws Fig 1 2 Remove the 8 screws of the Front Panel d INVERTER Screws EN Fig 2 3 Remove the Top Cover of the Electronic Caution When handling electronic controller be careful of Controller electrostatic discharge Top Cover 4 Remove the Control Board 86 17 Technical Data Technical data provided are based on the air conditioner running under free frequency 17 1 Cool Mode Performance Data Unit setting Standard piping length Hi Fan Cool mode at 16 C Voltage 230V CS RE18QKE CU RE18QKE Indoor C

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