Ceiling Cassette Inverter Service Manual
Contents
1. Unit mm A c wssoDuanre so 6 ae 3 33 Outdoor Units Electric Characteristics B 1 Unit mm Monee n SE SE 600 376 340 360 34 Outdoor Units Operation Limits 2 Service Space Wall or obstacle Air than 60cm More than 30cm Maintain channel I Air inlet EM More than 60cm Air outlet than 200 Outdoor Units R Electric Characteristics 3 Piping Diagrams KV24ODU ARF21 KV36ODU ARF21 INDOOR OUTDOOR Electronic LIQUID SIDE CAPILIARY TUBE expansion valve 000007 T3 Condenser temp sensor u HEAT EVAPORATOR 2 Dene P temp sensor T2 Evaporator temp sensor Accumulator 5 Discharge p temp2. Note 8000 2400 0Btulh R22 36000 4800 OBtulhR22 Series B 240nm Seres B 310nm Chart 3 Hook A TOT Nut L m m Ceiling 880mm Panel Chart 2 Drain side A Tubing side ja 780 Hook lo 880 C tting hole 950 Panel Chart 4 Unit mm Installation pape r board Bolt M6X12 Chart 5 12 Four way Ceiling Cassette Type Field Wiring 4 Wiring Diagrams KV24CC ARF21 KV36CC ARF21 WIRING DIAGRAMING HIE 202042890195 1 FUNCTION OF SWITCH FOR UNIT ADDRESS 10 TO WIRE DISPLAY BOARD coNTROLLER 81 52 SWITCH 70 of the 52 and ON OFF of the 51 mean the addresses of the different units Respectively 5 ADD NET CN10 to JR 12 Li 2 52 ENGI 132 51 SW Es SW4 MAIN CONTROL BOARD CN6 CN5 WHITE BLACK UAE VNe summon no Yes ALARM ENCI SWITCH FOR POWER ON OFF POWER l 53001 reus Maite 1 i BLACK 5 1 Goo 1 ej mow FOR COMPENSATIO
3. LCP INVERTER 1 1 MODELS INDOOR UNIT Four way Ceiling Cassette KV 24CC ARF21 KV 36CC ARF21 KV 48CC ARF21 Ceiling floor Mount Convertible KV 24CM ARF21 KV 36CM ARF21 KV 48CM ARF21 OUTDOOR UNIT Universal Outdoor Unit KV 24ODU ARF21 KV 36ODU ARF21 KV 48ODU ARF21 SERVICE MANUAL C LIGHT COMMERCIAL AIR CONDITIONING 20 4 2 Contents CONTENTS Part 1 General 1 Part 2 UN uum 6 Part 3 i u gt 32 Part 4 Q 63 Part 5 inue ERR 74 Contents i General Information Part 1 General Information 1 Model 2 2 External dali 3 2 1 Indoor Units cecus 3 22 QUIOOGE DIIS usi lu EIU PA a 3 aucune M 4 eee eH 5 3 Piping Diagrams euer 36 General Information 1 Nomenclature 1 Model Lists 1 1 Indoor Units R410A capacity multiplied by 1000Btu h Cooling Only 1 2 Outdoor Units Universal Outdoor unit Model Compressor t
4. 3 a c2 on s e 2 ERROR l oureur REMOTE CONTROL CONTROLLER INDOOR POWER INDOOR UNIT POWER WIRING DIAGRAM INDOOR FAN VJ T2B OUTER PIPE TEMP T2 MIDDLE PIPE TEMP am CONNECTORS 2 WAY CONNECTOR TRANSFORMER 6 WAY CONNECTOR 1 CODE TITLE JONI SW2 SWITCH i 1 ON FLOOR CEILING BLACK WHITE A xs4 SWITCH Bos 1 ANA BERR OUTDOOR CO 6 Conu BUS EST 1 According to E function coos rw rawoon c FAN MOTOR CAPACITOR GMA SWING MOTOR ______ Room TEMP __ 128 OUTER PIPE ____ T2 ____ MIDDLE PIPE TEMP AA CONNECTORS 51 X83 54 2 WAY CONNECTOR CONNECTOR TRANSFORMER 6 WAY CONNECTOR NUM 8 POWER S ENC2 SWI ENCI MAIN CONTROL BOARD ADDRESS NET DISPLAY BOARD TO OUTDOOR COMM BUSI COMM BUS 24 Ceiling amp Floor Type Field Wiring 5 Capacity Tables 6 1 Cooling Capacity KV24CM ARF21 Outdoor conditions DB Indoor Conditions kW 21 15 C 24 17 C 27 19 C DB WB 32 23 C DB WB KV36CM ARF21 28 35 58 5 80 5 75 5 68 5 52 2 38
5. 4 5 Drainage test 1 Drainage without drain pump After finishing drainpipe installation pour some water into the water receiver plate to check if the water flows smoothly 2 Drainage with drain pump Poke the Water Level Switch remove the cover use water pipe to pour 2000ml water into the water receipt plate through the water inlet SS eed Iw CS VM Water inlet VM pour Water Turn on the power to Cooling operation Check the pump s operation and switch on the Water Level Switch Check the pump s sound and look into the transparent hard pipe in the outlet at the same time to check if the water can discharge normally 69 Water Stop the air conditioner running turn off power and put back cover Stop the air conditioner After 3 minutes check if it has abnormity If the collocation of drainpipes is illogical the water will flow back overfull which will cause the alarm lamp flashes even overflow from the water receipt plate Keep on pouring water until it gives an alarm signal for high water level check if the pump drains water at once If the water level can t fall below the alarmed water level after 3 minutes the air conditioner will stop Turn off the power and drain the remained water and then turn on the air conditioner Note the drain stuff in the main water receipt plate is for maintenance Stuff up the drain stuff to prevent water leakage
6. Jorg COMPEXHAUSTSENSORR MAIN BOARD YELLOW PFC INDUCTOR TO INDOOR COMM BUS NOTE PLEASE USE 3 CORE SHIELDED WIRE 38 Outdoor Units Operation Limits KV48ODU ARF21 PEC CONTORL 202075790360 CODE PART NAME COMPRESSOR 4 MOTOR CAPACITOR ELECTROLYTIC CAPACITOR Ac CURRENT DETECTOR DIODE MODULE ELECTRIC EXPANSIVE VALVE FAN1 FAN2 OUTDOOR FAN MOTOR L IPM MODULE L PRO KM PTCLPTC2 EXHAUST TEMPERATURE SENSOR CONDENSER TEMPERATURE SENSOR OUTDOOR AMBIENT TEMPERATURE SENSOR sss TEMPERATURE SENSOR gt 2 S sv H T fre v TO INDOOR COMM BUS POWER SUPPLY NOTE PLEASE USE 3 CORE SHIELDED WIRE Outdoor Units 39 Electric Characteristics 5 Electric Characteristics Outdoor Unit Hz em Mm Mae KV24ODU ARF 1 6 220 240 254 KV36ODU ARF 1 6 220 240 254 KV48ODU ARF 1 6 220 240 254 40 Outdoor Units Operation Limits 6 Operation Limits Temperature 0 50 Outdoor temperature 15 C 50 C For the models with low temperature cooling system
7. 7 Features 1 Features 1 Low operation noise Streamline plate ensures quietness Creates natural and comfortable environment 2 Efficient cooling Equal fast and wide range cooling k 3 Excellent performance optimal evaporator amp sufficient airflow volume guarantees the excellent capacity 4 The adoption of the most advanced 3 Dimensional Screw fan Reduces the air resistance passing through Smoothes the air flow Makes air speed distribution to the heat exchange uniform 3 Dimensional Screw Fan 5 Fresh air makes life healthier and more comfortable Fresh Air Intake Lean over 1 50 8 Four way Cassette Type Features 8 Swing angle of louver 1 Add one more swing motor one motor driving two louvers Controlling the interspace of each part minimizing the angle loss 2 The swing angle of the first louver are 40 42 degrees and the second louver are 37 38 degrees New evaporator and inner configuration designed can acquire high heat exchanger effect Say 9 More strengthening rib design around the panel preventing the distortion for the panel N 10 New outlet frame design to make the phenomena of coagulation great improvement prevent the condensing water from damaging the air guide strip 11 Adding rib on the panel of fan outlet which can avoid the air outlet direct flow to people Adding Rib 12 4 speeds available
8. 70 Operation 5 Insulation Work 5 1 Insulation material and thickness 1 Insulation material Insulation material should adopt the material which is able to endure the pipe s temperature no less than 70 in the high pressure side no less than 120 in the low pressure side For the cooling type machine no requirements at the low pressure side Example Heat pump type Heat resistant Polyethylene foam withstand above 120 C Cooling only type Polyethylene foam withstand above 100 C 2 Thickness choice for insulation material Insulation material thickness is as follows Pipe diameter mm Adiabatic material thickness Refrigerant pipe 6 4 25 4 0286 0381 Drainage pipe inner diameter 20 032 5 2 Refrigerant pipe insulation 1 Work Procedure Before laying the pipes the non jointing parts and non connection parts should be heat insulated When the gas proof test is eligible the jointing area expanding area and the flange area should be heat insulated 2 Insulation for non jointing parts and non connection parts Gas pipe and liquid pipe should Insulate the gas pipe Insulate the gas pipe and not be put together to insulate cooling only liquid pipe Heat insulation Binder Liquid pipe 71 Wiring For construction
9. Notes MFA Max Fuse Amps A 8 Sound Levels Air outlet side 1m Air outlet side indoor unit Ceiling Floor Noise level dB A Model KV 6CM ARF21 KV48CM ARF21 28 Ceiling amp Floor Type Field Wiring 9 Accessories 1 Hook Installation fittings 2 Hanging arm 3 Remote controller Remote controller amp Its holder 4 Remote controller holder 5 Mounting screw ST2 9x10 C H 6 Alkaline dry batteries AM4 7 Owner s manual 8 Installation manual 9 Remote controller manual Others Ceiling amp Floor Type 29 The Specification of Power 10 The Specification of Power KV24CM ARF21 Type KV36CM ARF21 KV48CM ARF21 Frequency and Voltage 220V 60Hz Indoor unit Power Power Wiring mm 3X1 0 Frequency and Voltage 220V 60Hz Outdoor unit Power Power Wiring mm 3X3 3 Indoor outdoor connection wiring Weak Electric Signal Indoor outdoor connection wiring Strong Electric Signal mm 30 Ceiling amp Floor Type Field Wiring 11 Field Wiring Wiring chart Power supply 220 240V 50Hz OR 220V 60Hz 1 phase Power supply 220 240V 50Hz 220V 60Hz E Circuit breaker 1 pha Power wiring indoor Communication Bus Air Condition Link Circuit INDOOR mnd Nn N Power supply V 1 Phase 220 240V NY Use 3 core cable 3 2 5 2 MM for the models which with Use 3 core cable 3x1 0mm
10. Measure the necessary length of the connecting pipe and make it by the following way a Connectthe indoor unit at first then the outdoor unit Bend the tubing in proper way Do not harm them Specially Notice the pipe length height dim ension of each capacity Max Length Max Elevation 240008tuf E Maximum pipe length 36 00B x m j m m Piping sizes w 2500081 9 m j 35 OEE m so00Buf r CAUTIONS Daub the surfaces of the flare pipe and the joint nuts with frozen and wrench it for 3 4 rounds With hands before fasten the flare nuts Be sure to use two wrenches simultaneously when you connect or disconnect the pipes Pipe gauge Tightening torque Flare dimension A Flare shape Min mm Max 144 176 kgf cm 333 407 504 616 630 770 kgf cm 19 97 2 118 6 990 1210kgf cm b The stop value of the outdoor unit should be closed absolutely as original state Every time you connect it firsi loosen the nuts at the part of stop value then connect the flare pipe immediately in 5 minutes If the nuts have been loosened for a long time dusts and other impurities may enter the pipe system and may cause malfunction later So please expel the air out of the pipe with refrigerant before connection c Expelthe air after connecting the refrigerant pipe with the indoor unit and the outdoor unit Then fasten the
11. Fittings Drainpipe Fittings Remote controller amp Its Frame 2 Remote controller amp Mounting screw ST2 9x10 C H 2 22 1 md Others Installation manual Installation accessory Expansible hook The product you have ___ ___ qo a 4 following accessories Orifice Four way Ceiling Cassette Type 17 The Specification of Power 10 The Specification of Power Frequency and Voltage 220 240V 60Hz 220 240V 60Hz Outdoor unit Power Power Wiring mm 3X2 5 3X3 3 Indoor outdoor connection wiring Weak Electric Signal Indoor outdoor connection wiring Strong Electric Signal 18 Four way Cassette Type Field Wiring 11 Field Wiring Wiring chart Power supply 220 240V 50Hz 220V 60Hz 1 phase Power supply 220 240V 50Hz OR 220V 60Hz jg Circuit breaker 1 phase Power wiring indoor Communication Bus Outdoor Unit CENTRAL CONTROL MONITOR CCM COMPUTER KV24CC ARF21 KV36CC ARF21 KV48CC ARF21 Air Condition Link Circuit 202042890198 INDOOR UNIT INDOOR UNIT an NN AMD ere Power supply 1 Phase 220 240V WA AO Use 3 core cable 3x2 5mm for the models which with Use 3 core cable 3x1 0mm for the others for the others 3 core shielded cable 3x 0 5mm 3 core shielded cable 3 0 5mm Power 1 220 240V 18 30 3 cable 3 2 5m
12. Low pressure protection Judge 1 The wiring between the low pressure switch and main control No board is connected well or correctly Connect it well Yes Judge 2 Whether the low pressure switch is broken Method Short connect the low pressure switch socket check Yes whether the system can run normally Replace low pressure switch No Check whether the refrigerant system is ok Yes Judge 3 Check whether the outdoor ambient temperature is too low Stop the unit No Judge 4 The refrigerant of the system is leakage Leak hunting Charge nitrogen or refrigerant to the system if the leakage is serious there will be distinct gas leakage cici sound if the leakage is slight use the suds mixture of water Yes and abluent is also ok if it can make bubble or electronic leak detector Method Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 14MPa No Yes Let the refrigerant out then use the high pressure Judge 5 The refrigerant pipe is blocked nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Replace outdoor main board Outdoor Units 55 Electric Characteristics 11 P3 malfunction P3 display Current protection of compressor Judge 1 Check whether the input current of the power supply wire is more than 20A For 36K amp 48K with 1 phase it is 30A Yes Check whether the refrigerant sys
13. optional super high fan speed design suitable for the large building over 3m high 13 Adding digital tube displaying on the display board LED can display the Error Code to make the malfunction checking easier Four way Ceiling Cassette Type 9 The Specification of Power 14 Reserve spaces for air side outlet it is available to connect duct pipe hence air supplying from the four sides to nearby small room For duct connecting gt 15 The connecting pipe and drop height is higher pipe length up to 50m refer to and drop height up to 30m refer to 2 16 Optimal design smaller Control Box Space saving and convenient for wiring Using fire resistance galvanized steel for E box material Metal box make the control part more stable and prevent damaging 10 Four way Ceiling Cassette Type Field Wiring 2 Dimensions Tubing side 680 Hook location Unit mm Connecting point of Connecting point of drain pipe refriger ant pipe Liquid side Unit mm MODEL 24 E 0159 KV36CC ARF21 Four way Ceiling Cassette Type The Specification of Power 3 Service Space Necessary room 2 outlet intlet outlet Chart 1 Note18000 24000Btu h R22 36000 48000BtulhR 22 ground Series A 260mm Series A 330mm
14. sensor GAS SIDE COMPRESSOR Notes KV24ODU ARF21 220075301740 amp KV36ODU ARF21 220075502120 have no EXV KV480DU ARF21 INDOOR OUTDOOR Electronic LIQUID SIDE CAPILIARY TUBE expansion valve 000007 T3 Condenser temp sensor 1 1 Room temp T4 Ambient 0 CONDENSER sensor temp sensor T2 Evaporator temp sensor T5 Discharge Oil separator ptemp sensor Er Re od GAS SIDE COMPRESSOR EE Oil return Capillary Outdoor Units Operation Limits 4 Wiring Diagrams KV24ODU ARF21 220075301510 202075390470 0001000100 Electronic expansive X we A BLACK COMPRESSOR GRAY 5 55 9 w TO INDOOR COMM BUS SSL XX YELLOW wc 8 BLACK BLACK FAN CAPACITOR u ly MAIN BOARD Y G NOTE PLEASE USE 3 SHIELDED WIRE nt 5 OUTDOOR FAN CURRENT DETECTOR REACTORI RIRIS AC CAPACITOR CN32 T T REACTOR2 1325 RED RED RECTIFILER2 RECTIFILER BLUE BLACK WHITE wy yN WHITE REACTOR3 R2503 KV240DU ARF21 2200753017
15. 710 Necessary 724 vacuum degree 755 760 Tenp 80 10 0 10 20 30 40 50 60 70 2 Vacuum dry procedure There are two methods of vacuum dry due to different construction environment common vacuum dry special vacuum dry Common vacuum dry procedure Vacuum dry for the first time connect the all purpose detector to the inlet of liquid pipe and gas pipe and run the vacuum pump more than two hours the vacuum pump should be below 755mmHg If the pump can t achieve below 755mmHg after pumping 2 hours moisture or leakage point will still exist in the pipe At this time it should be pumped 1 hour more pump can t achieve 755mmHg after pumping hours please check if there are some leakage points Vacuum placement test place 1 hour when it achieves 755mmHg pass if the vacuum watch shows no rising If it rises it shows there s moisture or leakage point Vacuuming from liquid pipe and gas pipe at the same time Sketch map of common vacuum dry procedure 2 kgf cm 5 05 5 o lt Vacuum 700 755 Vacuum dry Add refrierant Vacuum laying test Oh 65 Water Q Special vacuum dry procedure This vacuum dry method is used in the following conditions There s moisture when flushing the refrigerant pipe Rainwa
16. DB WB 2 61 S Input 228 24 24 266 32 23 C DB WB 43 ojo CO 27 19 DB WB KV36CC ARF21 21 15 C DB WB H6 ben AE OE l 90 24 17 C DB WB Te 1188 15 33 1100 1023 27 19 C DB WB 37 392 413 43 32 23 C DB WB KV48CC ARF21 Outdoor conditions DB 21 15 C DB WB 24 17 C DB WB 4 83 TC 1512 442 140 1302 27 19 C DB WB 422 445 469 492 15 40 14 84 14 56 13 44 32 23 13 09 12 91 12 81 12 50 Notes TC Total capacity kW SC Sensible heat capacity kW Input Input power kW 14 Four way Ceiling Cassette Type Field Wiring 6 Air Velocity and Temperature Distributions Airflow velocity 2 7 em On Temperature 2 77 Ler 4m 3m 4 Four way Ceiling Cassette Type 15 The Specification of Power 7 Electric Characteristics eae Indoor Unit Power Supply me 2020 198 24 15 777 eo 220240 19 24 15 weccaRrs eo 220240 19 24 15 Notes MFA Max Fuse Amps A 8 Sound Levels Noise level dB A Model 16 Four way Cassette Type Field Wiring 9 Accessories INSTALLATION FITTINGS Tubing amp
17. before the test operation The indoor unit and outdoor unit are installed properly Tubing and wiring are correctly completed The refrigerant pipe system is leakage checked The drainage is unimpeded The ground wiring is connected correctly The length of the tubing and the added stow capacity of the refrigerant have been recorded The power voltage fits the rated voltage of the air conditioner There is no obstacle at the outlet and inlet of the outdoor and indoor units The gas side and liquid side stop values are both opened The air conditioner is pre heated by turning on the power 3 According to the user s requirement install the remote controller when the remote controller s signal can reach the indoor unit smoothly 4 Test operation Set the air conditioner under the mode of COOLING with the remote controller and check the following points Indoor unit eee Whether the switch the remote controller works well Whether the buttons on the remote controller works well Whether the air flow louver moves normally Whether the room temperature is adjusted well Whether the indicator lights normally Whether the temporary buttons works well Whether the drainage is normal Whether there is vibration or abnormal noise during operation utdoor unit Whether there is vibration or abnormal noise during operation Whether the generated wind noise or condensed of by the air conditioner have influ
18. keep pushing more than 2 seconds the louver will swing up and down automatically 5 HORIZ SWING Used to stop or start vertical louver movement 6 AIR DIRECTION Used to set the desired up down air flow direction The louver changes 6 degree in angle for each press 7 ON OFF For turning on or turning off the air conditioner 8 FAN SPEED Fan speed will be selected in following sequence once pressing this button AUTO LOW MED HIGH 9 TIME ON For time ON setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour Adjusting the figure to 0 00 will cancel time ON setting 10 ECO Activate or turn off economic operation mode It is suggested to turn on this function when sleeping Only available when remote controller is used with corresponding unit 11 TIME OFF For time OFF setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour Adjust the figure to 0 00 will cancel time ON setting 12 C H inner located Press this button with a needle of 1mm to shift the mode between Cooling only and Cooling amp Heating according to the feature of the machine 13 RESET inner located Press this button with a needle of 1mm to cancel the current setting and reset remote controller 76 A Tr
19. 2 for the others 3 core shielded cable 3x 0 5mm Power supply 3 Phase 380 415 30K 60K 5 core cable 5x2 5mm OUTDOOR UNIT Li For30K 60K Btu h with 3 Phase outdoor unit auxiliary electric heater PTC CENTRAL CONTROL MONITOR CCM COMPUTER 202042890198 INDOOR UNIT NI Power supply UU t Phase 220 240 M Use 3 core cable 3 2 5 2 for the models which with auxiliary electric heater PTC Use 3 core cable 3x1 0mm for the others W WA 3 core shielded cable 3 0 5mm Power supply 1 Phase 220 240V 18 30 3 cable 3 2 5 36 60 3 cable 3x4 0mm2 OUTDOOR UNIT L1 For 18K 60K Btu h with 1 Phase outdoor unit I I I I 1 I Ceiling 8 Floor Type 31 Outdoor Unit Part 3 Outdoor Units ou HEEL LLL 33 oett 35 d Wiring u uu l 37 5 Electric Characteristics 40 6 Operation LIMES en nnn eni en idd 41 En 42 hooti RR 43 32 Outdoor Unit Operation Limits 1 Dimensions
20. 2 49 7 52 7 30 5 79 5 69 2 28 2 41 2 54 2 66 7 74 7 59 6 73 6 68 2 38 2 49 2 66 2 76 Indoor conditions DB at Indoor Conditions kW 21 15 C 24 17 C DB WB 27 19 C 32 23 C DB WB KV48CM ARF21 28 35 10 82 10 29 9 77 7 92 7 81 3 44 3 73 3 89 4 02 364 39 46 426 3 64 Outdoor conditions DB Indoor Conditions 21 15 C 24 17 C 27 19 C 32 23 C DB WB Notes TC Total capacity kW SC Sensible heat capacity kW Input Input power kW 28 35 1309 1250 13 09 12 91 12 81 12 50 4 60 4 92 Ceiling amp Floor Type 25 The Specification of Power 6 Air Velocity and Temperature Distributions Discharge angle 60 CEILING Airflow velocity 3m 15 Lom 0 m sec 1m Om Om im em 3m 4m Temperature 3m 22 Im T T T T Om Om em 3m 4m 26 Ceiling amp Floor Type Discharge angle 60 FLOOR Airflow velocity 3m 0 5m sec Om Om im 2m 3m Temperature 4m 3m Om 3m Field Wiring Ceiling amp Floor 27 The Specification of Power 7 Electric Characteristics Hz Voltage Min MFA KV24CM ARF21 60 220 240 KV36CM ARF21 60 220 240 KV48CM ARF21 60 220 240
21. 40 202075390556 5 BLACK OMPRESSOR GRAY YELLOW Y G wo 2 CJ BLACK FAN CAPACITOR 5 1000110 Q NW A 555 TO INDOOR COMM BUS y NS Q m NOTE PLEASE USE 3 CORE SHIELDED WIRE OUTDOOR FAN ORANGE Tl T BLUE 1 R1815 RECTIFILER2 RECTIFILERI AC CAPACITOR x J N i REACTOR R1325 BLACK WHITE WHITE REACTOR3 R2503 Outdoor Units 37 Electric Characteristics KV36ODU ARF21 220075501730 202075590479 BLUE COMPRESSOR LOW PRESSURE PROTECT Electronic expansive Valve HIIGH PRESSURE PROTECT COMP EXHAUSTSENSORR YQ AM o MAIN BOARD KV36ODU ARF21 220075502120 CURRENT CN32 Q m AA x XX RY XX AN TO INDOOR COMM BUS NOTE PLEASE USE 3 CORE SHIELDED WIRE 202075590598 COMPRESSOR BROWN LOW PRESSURE PROTECT HIGH PRESSURE PROTECT
22. CAUTION 1 If the air conditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 8096 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 The optimum performance will be achieved during this operating temperature zone Outdoor Units 41 Electric Characteristics 7 Sound Levels Outdoor Unit Microphone 1 0m Note H 0 5 x height of outdoor unit Model Noise level dB A 42 Outdoor Units Operation Limits 8 Troubleshooting 9 1 Indoor unit malfunction 9 1 1 Display board Normal 4 way cassette Temporary button Infrared signal receiver 7 Operation lamp Timer indicator Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type Ceiling amp Floor 10 Operation lamp OPERATION CD D TIMER DEF FAN As indicator cooling and I or fan only indicator cooling only type indicator Alarm indicator Temporary button Infrared signal receiver Outdoor Units 43 Electric Characteristics 9 1 2 Troubleshooting
23. N af 88 SWITCH LN ___ elelele i ding t v wi v a a BU Factory EL d EC A RARA 7 VOA gt INDOOR POWER waite BERR NOTE PLEASE USE SHIELD LINE TO OUTDOOR CCM COMM BUS COMM BUS KV48CC ARF21 202042790060 eN 10 LL To wire BOARD CONTROLLER 59 XP9 WIRING DIAGRAM INDOOR UNIT Ex In 9 FUNCTION OF SWITCH CN14 51 FOR UNIT o Em e 0 F of the S2 and ON OFF swi ENC2 ENC 51 52 of the S1 mean the addresses of the different units respectively MAIN CONTROL BOARD SWITCH ron POWER 4500W 1 600 c2 2 560 s _ ca orP gt 2 sow cs 2 e 10500v o 14000 5 OHP OR 16000W 6 NUMBER POWER 22004 BHP e 2 1 2 3 5 TO OUTDOOR TO CCM INDOOR UNIT POWER wite COMM BUS COMM BUS Four way Ceiling Cassette Type 13 The Specification of Power 5 Capacity Tables 5 1 Cooling Capacity KV24CC ARF21 Outdoor conditions DB Indoor Conditions O TC TC 7 15 6 79 sc TC SC TC C EN 21 15 24 17 C
24. NO Malfunction Running Timer Defrosting Alarm Display nixie lamp lamp lamp lamp tube Communication malfunction between indoor and outdoor units x E1 2 Open or short circuit of T1 temperature E2 sensor Open or short circuit of T2 temperature E3 sensor Open or short circuit of T2B temperature E4 sensor Full water malfunction EE 6 EEPROM malfunction E7 Outdoor unit malfunction X Ed X off flash at 5Hz o flash at 0 5Hz 1 Running lamp flashes Judge 1 Indoor temp sensor is Running lamp flashes at 5Hz Judge 1 Indoor temp sensor is abnormal Running lamp flashes at 5Hz Check whether the resistance of the evaporator temp sensor is correct according to Annex 1 Yes Judge 2 Room temp sensor is abnormal No Check whether the resistance of the room temp Replace room temp sensor sensor is correct according to Annex 1 Yes Replace indoor PCB 44 Outdoor Units Operation Limits 2 Timer lamp flashes Timer lamp flashes at 5Hz Judge Indoor outdoor unit communication is abnormal Refer to the outdoor unit LED display E2 malfunction in the following part 3 Alarm lamp slow flash Indoor alarm lamps flash at 1Hz Condenser temp sensor or outdoor unit is malfunction Judge 1 Condenser temp sensor is abnormal Check whether the resistance of the condenser temp sensor is No correct according to Annex 1 Replace condenser temp sensor Yes Judge 2 Outdoor unit is abn
25. YPE V Inverter BRAND NAME K Koppel Indoor Units Features 4 Features 4 1 Universal outdoor unit design Indoor unit with the same capacity can match with the same outdoor unit 4 2 High efficiency and energy saving Thanks to the DC inverter technology and optimized piping system the EER and COP of whole series can easily reach A class 4 3 Low noise and low starting current Thanks to the DC inverter technology the system can work with low noise and very small starting current 4 4 Intelligent refrigerant adjustment technology Throttle part is made up of capillary and electronic expansion valve EXV The outdoor unit can output the most accurate capacity in any condition 4 5 Working in cooling mode under 15 Outdoor unit built in with low ambient kit it can control the outdoor unit s fan and cooling can be performed throughout the year for computer rooms banquet halls etc Wide operation range covers outdoor temperatures as low as 15 for cooling 4 6 Indoor amp outdoor unit s power supply is separate 4 7 All indoor units have network control function 4 8 All indoor units have Auto restart function General Information 5 Indoor Units Part 2 Indoor Units 6 Indoor Units Four way Ceiling Cassette Four way Ceiling Cassette Type 8 Sound 16 17 Four way Ceiling Cassette
26. adition of leadership and for over 50 years KOPPEL INC Manila Office ACSIE Avenue West Service Road Km 16 South Super Highway City 1700 Philippines Tel Nos 632 823 2366 823 1580 Sales 632 823 7310 Service Fax Nos 632 823 6995 Customer Service 632 823 7310 24 Hour Hotline 632 843 4343 loc 2154 Website www koppel ph Cebu Office A Cortez Avenue Mandaue City Tel No 032 846 7278 Fax No 032 346 7279 Davao Office J P Cabagiuo Avenue Davao City Tel Nos 082 221 6419 082 221 6585 Fax No 082 221 6418 specifications are subject to change without prior notice for continous product improvement PDED REV No 01 0412
27. convenience before laying pipes use insulation material to insulate the pipes to be deal with at the same time at two ends of the pipe remain some length not to be insulated in order to be welded and check the leakage after laying the pipes 3 Insulate for the jointing area expanding area and the flange area Insulate for the jointing area expanding area and the flange area should be done after checking leakage of the pipes Make sure there s no clearance in the joining part of the accessorial insulation material and local preparative insulation material No clearance at connecting part Heat insulation material should be overlap insulation material On Field 5 3 Drainage pipe insulation 1 The connection part should be insulated or else water will be condensing at the non insulation part 5 4 Note 1 The jointing area expanding area and the flange area should be heat insulated after passing the pressure test 2 The gas and liquid pipe should be heat insulated individually the connecting part should be heat insulated individually 3 Use the attached heat insulation material to insulate the pipe connections pipes tie in expand nut of the indoor unit 6 Wiring Please refer to the Wiring Diagram 72 Operation 7 Test Operation 1 The test operation must be carried out after the entire installation has been completed 2 Please confirm the following points
28. d slowly f Always use protective gloves and protect your eyes when charging refrigerant The outdoor unit is factory charged with refrigerant Calculate the added refrigerant according to the diameter and the length of the liquid side pipe of the outdoor unit indoor unit 012 7 Less than 5m One way Added Refrigerant When sacs L 5 s L 5 e L 5 Over 5m One wa Remark R g Additional refrigerant to be charged L m The length of the refrigerant pipe one way D mm Liquid side piping diameter 67 Water 4 Water Drainage 4 1 Gradient and Supporting 1 Keep the drainpipe sloping downwards at a gradient of at least 1 50 Keep the drainpipe as short as possible and eliminate the air bubble 2 The horizontal drainpipe should be short When the pipe is too long a prop stand must be installed to keep the gradient of 1 50 and prevent bending Refer to the following table for the specification of the prop stand 3 Precautions The diameter of drainpipe should meet the drainage requirement at least the drainpipe should be heat insulated to prevent atomization Drainpipe should be installed before installing indoor unit After powering on there is some water in water receiver plate Please check if the drain pump can operate correctly connection should be firm G Wipe color on PVC pipe to note connection Climbing horizontal and bending conditions are prohibi
29. display EEPROM malfunction Judge Check whether the EEPROM is inserted well Insert the EEPROM well Yes Replace outdoor main board Outdoor Units 47 Electric Characteristics 2 E2 malfunction E2 display Communication malfunction between indoor IC and outdoor IC Judge 1 Check whether the indoor unit power is on Yes Judge 2 Check whether the signal wiring is shield cable or whether the shield cable is earthed Yes Judge 3 Check whether the signal wiring between the indoor and outdoor units is wrong polarity Judge 4 Check whether the signal wiring between the indoor and outdoor units is broken No Indoor or outdoor main board is broken Replace the main board until the malfunction disappears No No Yes Yes Turn on the indoor unit power Adopt the shield cable let shield cable earthed Connect the signal wiring correctly Replace the broken wiring 48 Outdoor Units Operation Limits 3 E3 malfunction For 18K amp 24K amp 30K E3 display Communication malfunction in outdoor IC and DSP Check whether the indicator lights LED1 on the main board is flashing ks Replace the outdoor main board Check whether the connecting wiring between the IPM module and the CN4 on the main board is broken off Insert the connecting wiring well over again Disconnect the connecting wiring between the IPM module and the CN4 on the main board us
30. e the multimeter to measure the voltage between the IPM module CN1 port s 3 and 4 pillar check whether it is 5V the third pillar on the main board Replace outdoor main board labels 45V Check whether the connecting wiring between the IPM module positive pole and the CN12 on the power board is broken off m Insert the connecting wiring well over again Check whether the connecting wiring between the IPM module negative pole and the CN13 on the power board is broken off Insert the connecting wiring well over again Use the multimeter to measure whether the voltage between the CN12 and Yes the CN13 on the power board is between 277 345 V Replace the IPM module Replace the power board Outdoor Units 49 Electric Characteristics 4 E3 malfunction For 36K amp 48K amp 60K E3 display Communication malfunction in outdoor IC and DSP Ye Check whether the indicator lights LED1 or LED2 on the main s control board are flashing Replace PCB Yes Install the IC U3 chip of the PCB over again check whether the system run normally Trouble is solved No Yes Check whether the output of the transformer to CN4 socket is well Replace PCB No Replace the transformer 50 Outdoor Units Operation Limits 5 E4 malfunction 4 display Judge 1 Outdoor condenser temp sensor T3 is malfunction Yes Check whether the wiring of the condenser temp sensor is broken off Connect the wiring well N
31. e un it will stop and unit runs again when outdoor pipe temp less than 525 P5 display High temperature protection of condenser Check whether the condenser temperature is more than 65 C Check whether the resistance of condenser temp the t t Clean the heat exchanger Replace outdoor main board Stop the unit Yes Judge1 The outdoor temp is too high No Clean the heat exchanger Judge 2 Check whether the heat exchanger is dirty N Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow pipe vacuumize and Judge 3 The refrigerant pipe is blocked charge the refrigerant again p N Replace outdoor main board 58 Outdoor Units Operation Limits 14 P6 malfunction For single phase units P6 display Module protection Check whether the voltage range of P N on IPM module is normal DC277 356V for 18K 24K 30KBtu h DC277 410V for Regulate it to correct then check whether the system can work normally 36K 48KBtu h Check whether the input power supply is correct 220 240V 1N 60Hz Yes Check whether the connecting line Check whether the power between main board and the IPM Connect it tightly supply line is connected Connect it correctly and module is connected tightly check ok or not correctly and tightly tightly check ok or not Yes No Check whether the lines in E Connect it tightly Check whether the co
32. ect and Yes Judge 2 Whether refrigerant circulation volume is Whether protector is No Replace the protector normal normal Yes No Yes Method Charge refrigerant Check the outdoor Replace the protector main PCB Is there some problem Whether abnormality is the same after gas charging No Check refrigerant system such as clogging of capillary etc Outdoor Units 53 Electric Characteristics 9 P1 malfunction P1 display High pressure protection Judge 1 Whether the wiring between the high pressure switch and main Connect it well control board is connected well or correctly Yes Judge 2 Whether the high pressure switch is broken Yes Method Short connect the high pressure switch socket check Replace high pressure switch whether the system can run normally No Check whether the refrigerant system is ok Yes Judge 3 Check whether the outdoor ambient temperature is too high Stop the unit No Yes Judge 4 Check whether the outdoor unit is bad ventilation Make the outdoor unit ventilate well No Yes Judge 5 Check whether the heat exchanger is dirty Clean the heat exchanger No Yes Let the refrigerant out then use the high pressure Judge 6 Check whether the refrigerant pipe is blocked nitrogen 1 DOW pipe vacuumize and charge the refrigerant again No Replace outdoor main board 54 Outdoor Units Operation Limits 10 P2 malfunction P2 display
33. enced your neighborhood Whether any of the refrigerant is leaked 73 Control Part 5 Control 1 Wireless Remote Controller 75 74 Control 1 Wireless Remote Controller 1 1 RG51Q1 BG C E SET TEVPERATURK C AUTO FAN C HGH DRY MD HEAT LON m ne T Y ADUST A DOHC gt 7 ear MODE __ FAN SPEED DOC 8 PS SNNG TIMER 10 Hariz Swing 5 C 90 Cre 13 G4 o cJ General Function for wireless remote controller Model and Specification Model RG51Q1 BG C E Rated voltage 3 0V Dry batteries R03 LR03x2 8m when using 3 0 voltage Effective receiving distance it Gets 11m Operation condition 5 6 75 Buttons and functions 1 Adjust Decrease the set temp Keeping pressing will decrease the temp with 1 C 0 55 2 Adjust Increase the set temp Keeping pressing will increase the temp with 1 C per 0 55 3 MODE Once pressing running mode will be selected in the following sequence deum NOTE heating mode for cool only unit 4 VERT SWING Used to stop or start horizontal louver movement or set the desired up down air flow direction The louver changes 6 degree in angle for each press If
34. ly requirement 1 5 Water proof by utilizing the absorbing plastic film on water collector 1 6 Easy operation 1 7 Remote control and optional wired control method Ceiling amp Floor Type 21 The Specification of Power 2 Dimensions a Wall mounting installation A D Connecting point of refrigerant pipe D gas side Drain point E Connecting point of refrigerant pipe E Liquid side b Ceiling installation D Connecting point of refrigerant pipe D gas side E Connecting point of refrigerant pipe E Liquid side eeo 203 ms gt wecwanem 180 em 20 22 Ceiling amp Floor Type Field Wiring 3 Service Space gt 35mm gt 35mm 23 Ceiling amp Floor Type The Specification of Power 4 Wiring Diagrams KV24CM ARF21 KV36CM ARF21 WIRING DIAGRAMING 202044490396 FUNCTION OF SWITCH FOR CCM UNIT ADDRESS 0 of the 52 and ON OFF of the 51 mean the addresses of the different units Respectively SWITCH SWITCH FOR POWER NUMBER POWER 5300W 7100W KV48CM ARF21 202044690039 FUNCTION OF SWITCH 51 FOR CCM UNIT s2 SWITCH ADDRESS of the S2 and ON OFF of the S1 mean the addresses of the different units respectively 2 3 7 14000W 5 16000 6 OHP Lo
35. m 36 60 3 cable 3x4 0mm2 Power supply 3 Phase 380 415V 30K 60K 5 core cable 5x2 5mm OUTDOOR UNIT OUTDOOR UNIT I 1 I wi Y Use 3 core cable 3x1 0mm auxiliary electric heater PTC I 1 1 1 tI For30K 60K Btu h For 18K 60K Btu h with 3 Phase outdoor unit with 1 Phase outdoor unit Four way Ceiling Cassette Type 19 Ceiling amp Floor Ceiling amp Floor Type 8 Sound EO 28 S 2 u u aAA 29 20 Ceiling amp Floor Type Field Wiring 1 Features 1 1 New design more modern and elegant appearance 1 2 Convenient installation ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow It is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting 1 3 Two direction auto swing vertical amp horizontal and wide angle air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction range of horizontal air discharge is widened which secures wider air flow distribution to provide more comfortable air circulation no matter where the unit is set up 1 4 Three level fan speed more humanism design meets different air supp
36. nnecting part box are connected tightly check ok or not line of the compressor is Connect it well connected correctly or tightly check ok or not Yes No Yes Check whether the single phase bridge is normal Use the multimeter to measure the resistance between each two terminals Yes check whether there is the condition that value of resistance is 0 Replace the single phase bridge Replace the IPM module check whether the system can work normally No Trouble is solved Replace the main board check whether the system can work normally Yes Trouble is solved Yes No Check whether the connecting line of every reactor is normal If the line is broken the resistance of Replace the the two ports is co connecting line Yes Replace the compressor check Yes whether system can work Trouble is solved normally Replace with the same model fuse Check whether the fuse on No the power board is normal Yes Replace the power board Outdoor Units 59 Electric Characteristics 15 P6 malfunction For three phases units P6 display Module protection Regulate it to correct then check whether the system can work normally Check whether the voltage range of P N on Check whether the input power supply IPM module is normal DC 350 650V is correct 380 415V 3N 60Hz Yes Check whether the connecting line DR Check whether the power between main board and the IPM C
37. nuts at the repair points 2 Locate The Pipe a Drill a hole in the wall suitable just for the size of the wall conduit then set on the fittings such as the wall conduit and its cover b Bind the connecting pipe and the cables together tightly with binding tapes Do not let air in which will cause water leakage by condensation c Pass the bound connecting pipe through the wall conduit from outside Be careful of the pipe allocation to do no damage to the tubing 3 Connect the pipes 4 Then open the stem of stop values of the outdoor unit to make the refrigerant pipe connecting the indoor unit with the outdoor unit in fluent flow 5 Be sure of no leakage by checking it with leak detector or soap water 6 Coverthe joint of the connecting pipe to the indoor unit with the soundproof insulating sheath fittings and bind it well with the tapes to prevent leakage 64 Operation 2 Dry and Checking 1 Vacuum Dry use vacuum pump to change the moisture liquid into steam gas in the pipe and discharge it out of the pipe to make the pipe dry Under one atmospheric pressure the boiling point of water steam temperature is 100 C Use vacuum pump to make the pressure in the pipe near vacuum state the boiling point of water falls relatively When it falls under outdoor temperature the moisture in the pipe will be vaporized Rolative pressure
38. o Check whether the resistance of condenser temp sensor is wrong Yes refer to the Annex 1 Replace condenser temp sensor No Judge 2 Outdoor ambient temp sensor T4 is malfunction Yes Check whether the wiring of the outdoor ambient temperature sensor T4 is broken off Connect the wiring well Check whether the resistance of outdoor ambient temperature sensor T4 is wrong refer to the Annex 1 4 Replace outdoor ambient temperature sensor No Replace PCB Outdoor Units 51 Electric Characteristics 6 E5 malfunction display protection of compressor Check the voltage of outdoor unit power supply whether the voltage No Check the power supply between L 1 and N is about 172 265V Yes Yes Replace the power board then check whether the system can run normally Trouble is solved No Replace outdoor main board 7 E6 malfunction Only for 30K 36K with 1 phase E6 display PFC module protection Check whether the connecting line between main board and the PFC module is connected tightly Connect it tightly check normal or not No Check whether the voltage between P and N of IPM module is 380 390V Replace the outdoor main board No Replace the PFC module 52 Outdoor Units Operation Limits 8 PO malfunction PO display Top temperature protection of compressor No Judge 1 Whether compressor operates Whether the connection is good Yes No Reconn
39. onnect it tightly supply line is connected Connect it correctly and module is connected tightly check ok or not correctly and tightly tightly check ok or not Yes Check whether the lines in E Connect it tightly i heck ok Check whether the connecting Connect it tightly part box are connected tightly oe or not line of the compressor is check ok or not connected tightly Yes Check whether the three phase bridge Replace the three phase is normal bridge Replace the IPM module check Yes whether 2 work Trouble is solved Yes Check whether the 3300uF 400V Replace this electrolytic electrolytic capacitor is normal capacitor No Replace the main board check whether the Yes system can work normally Trouble is solved Replace the compressor check whether Yes Trouble is solved the system can work normally 16 P7 malfunction 60 Outdoor Units Operation Limits P7 display High temperature protection of evaporator No Whether compressor operates Whether the connection is good Yes No Reconnect and Yes Check whether the heat exchanger is dirty the air Whether the No Replace the outlet is blocked and the indoor fan is normal temperature sensor temperature sensor is normal No Yes Replace the indoor Whether the indoor Clean the heat exchanger and the air outlet PCB is normal Check whether the indoor fan is normal i No Check refrigerant
40. ormal Refer to the outdoor unit LED display E4 P2 malfunction in the following part Outdoor Units 45 Electric Characteristics 4 Alarm lamp quick flash Alarm lamp flashes at 5Hz Judge Water level switch is abnormal No Replace water pump Check whether the water pump can work normally Yes Yes Select the cooling mode to make water pump work for a few minutes then Trouble is solved check whether the system can run normally No Yes Solve to make the water can flow Check whether the water drain pipe is blocked fluently No Replace indoor PCB 5 Defrost lamp flashes Defrost lamp flashes Judge Mode conflicts malfunction Turn the indoor unit to heating mode or turn off the unit 46 Outdoor Units 5 5 3 o 9 2 Outdoor unit malfunction Display Malfunction or Protection EO EEPROM malfunction E2 Communication malfunction between indoor IC and outdoor IC ES Communication malfunction in outdoor IC and DSP 4 Malfunction of outdoor temperature sensor E5 Voltage protection of compressor E6 PFC module protection Only for 36K 48K P0 Top temperature protection of compressor P1 High pressure protection P2 Low pressure protection P3 Current protection of compressor P4 Discharge temperature protection of compressor P5 High temperature protection of condenser P6 Module protection P7 High temperature protection of evaporator 1 E0 malfunction E0
41. system such as clogging of capillary etc Outdoor Units 61 Electric Characteristics Appendix Indoor Temp and Pipe Temp Sensor Resistance Value Table C K C 20 115 266 108 146 18 101 517 2 35774 0 62973 2 27249 0 61148 2 19073 0 59386 12 6431 2 11241 0 57683 12 0561 11 5000 10 9731 17 96 3423 10 4736 16 89 5865 2 03732 0 56038 10 000 1 96532 0 54448 9 55074 052912 051426 045969 0 48600 0 47256 045957 044699 045462 148 04250 041164 0 40060 m nr 038991 037956 lt 9 738 5 026954 59 En 52 2438 49 3161 46 5725 44 0000 N 025962 025042 05415 03246 032390 01569 020754 029974 029216 0 2882 027770 027076 025408 025757 025125 024512 023916 023338 022776 022231 178005 7 7 1 8 19 62 Outdoor Units Installation Part 4 Installation 1 Precaution Installation 64 2 Vacuum Dry and Leakage 65 3 Additional Refrigerant Charge 67 db gt 68 Mirre rei me 71 En 72 Installation 63 Water 1 Precaution on Installation 1
42. ted The dimension of drainpipe can t less than the connecting dimension of indoor drainpipe Heat insulation should be done well to prevent condensation Indoor units with different drainage type can t share one convergent drainpipe 4 2 Drainpipe Trap 1 If the pressure at the connection of the drainpipe is negative it needs to design drainpipe trap 2 Every indoor unit needs one drainpipe trap 3 Aplug should be designed to do cleaning 4 3 Upwards drainage drain pump For Four way cassette compact Lean over 1 50 0 Pump pipe the fittings 68 Operation For Four way cassette Lean over 1 50 Pump pipe clasp 4 4 Convergent drainage 1 The number of indoor units should be as small as possible to prevent the traverse main pipe overlong 2 Indoor unit with drain pump and indoor unit without drain pump should be in different drainage system Air ventilation 100mm or above Gradient 1 50 or above 3 Selecting the diameter Number of connecting indoor units Calculate drainage volume Select the diameter Calculate allowed volume Total cooling capacity of indoor units HP x2 hr Material Allowed volume lean 1 50 hr mm Thick Hard PVC lt 14 25 3 0 14 lt lt 88 30 3 5 Hard PVC 88 lt x 334 40 4 0 Hard PVC 175 lt 334 50 45 334 v 80 6 0
43. tem is ok Yes Judge 2 Check whether the outdoor ambient temperature is too high Stop the unit i No Yes Judge 3 Check whether the outdoor unit is bad ventilation Make the outdoor unit ventilate well No Yes Judge 4 Check whether the heat exchanger is dirty Clean the heat exchanger No Yes Let the refrigerant out then use the high pressure Judge 5 The refrigerant pipe is blocked nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again p No Replace outdoor main board 56 Outdoor Units Operation Limits 12 P4 malfunction When compressor discharge temperature is higher than 115 C the unit will stop and unit runs again when compressor discharge temperature is lower than 90T P4 display Discharge temperature protection of compressor Check whether the compressor discharge temp is more than 115C Check whether the wiring connection is right between compressor discharge temp sensor and Correct the wiring connection PCB according to wiring diagrams Check whether the refrigerant is leak Yes Stop leaking and add refrigerant Judge The discharge temp sensor is broken Method Check whether the resistance of compressor discharge Replace the compressor temp sensor is right refer to the Annex 2 discharge temp sensor Replace outdoor main board Outdoor Units 57 Electric Characteristics 13 P5 malfunction When condenser high temp is more than 65 th
44. ter may enter into the pipe Vacuum dry for the first time 2h pumping Vacuum destroy for the second time Fill nitrogen to 0 5Kgf cm Because nitrogen is for drying gas it has vacuum drying effect during vacuum destroy But if the moisture is too much this method can t dry thoroughly So please pay more attention to prevent water entering and forming condensation water Vacuum dry for the second 1h pumping Determinant Pass if achieving below 755mmHg If 755mmHg can t be achieved in 2h repeat procedure and Vacuum placing test 1h Sketch map of special vacuum dry procedure kgf cm 0 5 5 qa v 3234 S4 lt 0 2004 5 400 755mmHg gt 6004 4 700 760 Vacuum dry 2h Vacuum destroy Vacuum dry h Vacuum laying test Vacuum dry eh 66 Operation 3 Additional Refrigerant Charge Caution Refrigerant cannot be charged until field wiring has been completed b Refrigerant may only be charged after performing the leak test and the vacuum pumping c When charging a system care shall be taken that its maximum permissible charge is never exceeded in view of the danger of liquid hammer d Charging with an unsuitable substance may cause explosions and accidents so always ensure that the appropriate refrigerant is charged e Refrigerant containers shall be opene
45. ype r Matched indoor units KV24CC ARF21 KV24ODU ARF21 Rotary DC Inverter KV24CM ARF21 KV36CC ARF21 KV36ODU ARF21 Rotary DC Inverter MITSUBISHI KV36CM ARF21 KV48CC ARF21 KV48ODU ARF21 Rotary DC Inverter MITSUBISHI KV48CM ARF21 Indoor Units Features 2 External Appearance 2 1 Indoor Units Four way Ceiling Cassette Ceiling floor Mount Convertible 2 2 Outdoor Units KV24ODU ARF21 KV48ODU ARF21 KV36ODU ARF21 s Super INVERTER Super INVERTER General Information 3 3 Nomenclature 3 1 Indoor Unit KV24CC ARF21 L SERIES CODE REFRIGERANT TYPE RF2 R410a POWER SUPPLY A 220 230 V 1 60 Hz 380 420 V 3 Ph 60 Hz C 220 230 V 3 Ph 60 Hz UNIT TYPE CC Ceiling Cassette CM Ceilng floor Mount Convertible COOLING CAPACITY 24 24 000 BTU hr 36 36 000 BTU hr 48 48 000 BTU hr COMPRESSOR TYPE V Inverter BRAND NAME K Koppel 3 2 Outdoor Unit KV240DU ARF21 T e seres CODE POWER SUPPLY A 220 230 V 1 Ph 60 Hz B 380 420 V 3 Ph 60 Hz C 220 230 V 3 Ph 60 Hz UNIT TYPE ODU Universal Outdoor Unit COOLING CAPACITY 24 24 000 BTU hr 36 36 000 BTU hr 48 48 000 BTU hr COMPRESSOR T
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