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Service Manual KXL DCI (brand Airwell

1. Pak Jumpers JP100 3 LP DI I GREA Oe D I pen 4 15 2121618 15 1106 mu NIGHT n n 2 1 OPTIONAL E J115 EE 4 tw Port ot a 1 DI i STAND BY 112 1 JOPTIONALI nig Jf B sito mt maa 4 HB GRD LP GRD HST m T POWER 1 nat FI j SHEDDING e L OP TIONALI Ie OO vere ee Qu uM ua FLASH OUTDOOR UNIT DIGITAL BOARD I ALARM 1 J0PTIONALI LZ J 1 Du ww I I 2 MEGATOOL mig OPTIONAL A ane 4 ed 1 1 MMI BOARD ou Jus 1 IOPTIONALI 1 El 2 0101 1 k m5 2216 OFAN 3 POWER 2 102 CHOCK I OUTDOOR UNIT POWER BOARD Na UI J201 COMM 2 CHOCK Lc Ferrite BHIBASE nm Du HEATERI L N DUN Core IOPTIONALI Ferrite Core OUTDOOR UNIT FILTER LINE BOARD WaT 3202 1209 L N IDU N Ground J207 J208 TERMINAL BLOCKS e Chassis e Main Supply For Power Supply from To ID Unit ECH Part NO 468600013 03 8 2 SM KXLDCI 2 A 2 GB Airwell REFRIGERATION DIAGRAMS 9 REFRIGERATION DIAGRAMS 9 1 Heat Pump Models 9 1 1 KLX 24 KLX 30 DCI Cooling mode
2. UTDOOR UNIT C h E o IX INDOOR UNIT lt Sensor 5 2 IK 2 Ya E Sensor d U 5 Volves Flared Reverse O volve a Indoor coil a FEV DH Outdoor Stramer Strainer N Coil COOLING amp DRY MODE Heating mode coil OUTDOOR UNIT E A A INDOOR UNIT lt 5 Sensor 5 5 u E b ore Reverse 6 VALVES connection 5 volve 4 Indoor coil Outdoor Strainer Strainer E HEATING MODE SM KXLDCI 2 A 2 GB 9 1 firwell TUBING CONNECTIONS 10 TUBING CONNECTIONS Outdoor E Suction line GAS Tube bending Liquid line A Flare nut D Pipe insulation 4 0 Insulating sleeve D Indoor _ Unit a k 8 v magan 02 pe Flare Nuts 15 60 65 80 85 18 33 15 18 45 Valve Cap 13 20 13 20 18 25 40 50 Service Port Cap 11 13 11 13 11 13 11 13 11 13 Valve Protection Cap end Refrigerant Valve Port use Allen wrench to open close Valve Protection Cap Refrigerant Valve Service Port Cap Flare Nut Unit Back Side Coppe
3. RATING CONDITIONS OUTLINE DIMENSIONS PERFORMANCE DATA amp PRESSURE CURVES SOUND LEVEL CHARACTERISTICS ELECTRICAL DATA E WIRING 85 2 222 REFRIGERATION 8 TUBING CONNECTIONS TROUBLESHOOTING 22205000000 CONTROL SYSTEM EXPLODED VIEWS AND SPARE PARTS LISTS APPENDIX inenen rent entree SM KXLDCI 2 A 2 GB TABLE OF CONTENTS Airwell INTRODUCTION 1 2 1 3 SM KXLDCI 2 A 2 GB INTRODUCTION General The new KXL DCI split cassette range comprises the following RC heat pump models e KXL 24 DCI KXL 30 DCI The New KXL units can be easily fitted to residential and commercial applications featuring esthetic design compact dimensions and low noise operation Main Features The DCI KXL series benefits from the most advanced technological innovations namely DC inverter technology e R410A High COP Lego Concept e Pre Charged units to the max allowing tubing distance Networking system connectivity Adry contract for presence detector or power shedding Cooling operation at out
4. 0 0 0 0 0 0 SM KXLDCI 2 A 2 GB 11 13 TROUBLESHOOTING Airwell 11 2 3 2 Outdoor fault corrective actions No FaultName Probable Cause Corrective Action 1 OCT bad J not connected or Check Thermistor OFAN halls or wires bad OFAN Compressor Check OFAN motor and Compressor wire cable bad or Feedback Loss compressor IPM bad or compressor bad Check no obstruction to controller air opening Check OFAN motor Check motor type matches motor jumpers in controller OFAN Lock Fan does not rotate Check OFAN motor Check motor type matches motor jumpers in controller Make necessary arrengments in unit installation location to avoid back wind Avoid EMC problems Check no obstruction to controller air opening Check Compressor Compressor Lock Compressor does not rotate Check Compressor Compressor Vospd E Try again and replace controller exceeded EXC Sas Speed limit if still have the problem Compressor High pressure Current reduces Check Compressor Foldback compressor speed DC under voltage DC voltage is lower than limit Replace controller Check if input voltage higher than limit 270VAC if not and the problem presist replace controller If voltage is high shut off the power and recommend the customer to fix the power supply Over current Over temperature OFAN IPM fault of OFAN IPM OFAN Vospd exceeded A Exceeds speed high limit
5. Deicing interval time when compressor is first started in heat mode is 10 minutes if OCT 2 and is 40 minutes in other cases Deicing interval time is changed increased decreased in 10 minutes steps as a function of deicing time If deicing time is shorter then former deicing time the deicing interval time will be increased If deicing time is longer then former deicing time the deicing interval time will be decreased SM KXLDCI 2 A 2 GB 12 11 CONTROL SYSTEM Airwell gt Deicing Operation Procedure OCT 12 0 Threshold COMP T1 T2 mex 12minutes ak HEAT DT RV ON OFAN OFF EEVDeicerOpen EEV Any T1 50 secondes T2 36 secondes T3 6 secondes 12 7 8 Condensate Water Over Flow Protection Each of the pins P1 P2 P3 can have two options 1 When it is shorted with P4 0 When it is not shorted to P4 gt Water Level Protection 1 level bere omne 2 onn 1 Pin P1 P2 or P3 is connected to P4 0 Pin P1 P2 or is not connected to P4 12 12 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM Overflow when Overflow when Overflow unit is ON unit is OFF Water Level Normal I I I I I I I I I I I I I I I I ON I I I I I I I I OPER JOFF I LED I 1 I ANY NLOAD is I NLOAD fo forced to 0 I I 1 1 I 1 1 I I 1 1 1 i ON I PUMP off gt 8 12 8 In
6. 5 4 3 2 1 1 1 0 0 0 O 1 2 RT tisshorted 0 0 0 1 0 3 RT2isdiconeced 0 0 0 1 4 RT 2isshoted L5 Reseved 0 0 0 1 0 1 7 Communicationmismatch 0 0 1 1 8 NoCommunication j 0 1 0 0 0 9 NoEncoder 210 1 O 0 10 Reserved 7 j 0 1 0 1 0 11 OutdoorUnitFaut 0 1 0 1 1 Reserved r j 17 Defrostprotection 1 0 0 O 18 DeicingProtection o o 1 O O 1 O 19 Outdoor Unit Protection 1 0 0 1 0 IndoorCoilHPProtecion 1 0 1 0 O 1 OveflowProtecion 1 0 1 Reserved CE EN 0 1 Using EEPROM data Egi E KAA E TARA EME SM KXLDCI 2 A 2 GB 11 3 TROUBLESHOOTING Airwell 11 1 4 1 Indoor Unit Diagnostics and Corrective Actions No Fault Probable Cause Corrective Action 4 Sensor failures of Check sensor connections or all types replace sensor Indoor and Outdoor controllers are with Replace Indoor controller different versions Communication mismatch Communication or No Communication grounding wiring is not good Check Indoor to Outdoor wiring and grounding Check motor wiring if ok No Encoder Indoor electronics
7. 8 8 60 OATLmt2H 18 t 62 MaxFregAsDATIH 8 neg 12 18 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM Model dependent parameters for GC 24 Z DCI Marma 9 owe EE Formen RER o 26 EEVMaxOperOpenH 480 HeaterDisableFlag 5 0 5 5 5 5 8 5 1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 HST Enable 15 INIM a EEN a Ec EN BER 22 EN EN 25 ES EA EM 3o 3 OATLimit2H 15 a waren 27 28 29 30 1 SM KXLDCI 2 A 2 GB 12 19 CONTROL SYSTEM Airwell Model dependent parameters for GC 30 DCI Compressor Parameters Value MinOFFTime MinOnTime MaxCTT1 MaxCTT2 MinSpeedAsCTT1 MinSpeedAsCTT2 MaxSpeedC MaxSpeedH Step1RPS Step2RPS Step3RPS NormAcc sec RPS NormDec sec RPS Down1 Sec RPS Down2 Sec RPS DeiceAcc Sec RPS DeiceDec Sec RPS N EEV Parameters EEvcamp0rFrime o euer o EEwwmOpecpemimDU 12 20 SM KXLDCI 2 A 2 GB Airwell EXPLODED VIEWS AND SPARE PARTS LISTS 13 EXPLODED VIEWS AND SPARE PARTS LISTS 13 1 Indoor Unit KXL 24 KXL 30 DCI ES SM KXLDCI 2 A 2 GB EXPLODED VIEWS AND SPARE PARTS LISTS Airwe
8. Compressor IPM Over current Over temperature Fault of compressor IPM pos A DC voltage exceeds its high 16 DC over voltage limit Check if input voltage lower than limit 170VAC if not and AC input voltage is lower than the problem presist replace limit controller If voltage is low recommend the customer to fix the power supply 17 AC under voltage 7 11 14 SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING ea 18 No communication A No signals in line A Check communication 19 Compressorstiegal Exceeds speed low limit See 13 Speed System Configuration Communication lines changed No problem just an Changed from last operation announcement Miss match between the IDUs System Configuration OS to por m arD Change configuration if or the total capacity code of IDUs is higher than the ODU 85050 maximum capacity code sealing rau heatsink protection running free Check fan motor Protection 0 Deicing Protection During deicing procedure No action required 2 Compressor Over Compressor stopped due to Check if gas is missing in the Heating Protection over heat protection system 2 System over power Compressor stopped due to No action required Protection over power protection Power reset Replace 26 Bad EEPROM EEPROM not operating Controller just in case you need EEPROM Power reset Replace Not Configured Cannot start the control Controller if d
9. 70 70 60 60 S NCc 60 50 50 i SS K N 40 40 N N N NORE i ONE ON 1 maes 30 sQ 20 APPROXIMATE 1 PS 20 APPROXIMATE i THRESHOLD OF Ls H THRESHOLD OF TI N3 I HEARING FOR E i i 1 1NC 20 HEARING FOR X i I e CONTINUOUS 1 i NOISE i zE T CONTINUOUS 4 NOISE 1 i Sg d 10 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 002 MICRO BAR OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz FAN SPEED SM KXLDCI 2 A 2 GB 6 1 SOUND LEVEL CHARACTERISTICS Airwell 6 3 Outdoor units Unit Mic Ground Figure 2 6 4 Sound Pressure Level Spectrum Measured as Figure 2 90 90 GC 24 Z Cooling GC 24 Z Heating 80 80 Se 70 70 60 60 50 50 1NC 50 i 30 1 3 1 SE Nn NE 3 1 i E 0 20 APPROXIMATE d THRESHOLD OF INI 1 1 1 HEARING FOR s 1 CONTINUOUS i 40 40 WN
10. Check diagnostics Check RV Check refrigeration system Check compressor phase order Connect base heater Check for EMC problems 11 11 TROUBLESHOOTING Airwell TA Other home appliances operation is faulty such as noise appears in the television picture or the EMS inlonerance by the A C unit Check for EMC problems picture is distorted or static occurs in the radio sound 22 All others specie probemsor ot eddiaqnostics indoor or outdoor units 11 2 2 Checking the refrigeration system Checking system pressures and other thermodynamic measures should be done when system is in technician Mode where the system operates as in fixed settings The performance curves given in this manual are given for unit performance in Technician mode when high indoor fan speed is selected 11 2 3 Diagnostics 11 2 3 1 Outdoor unit diagnostics If any fault exists in the system it will be shown according to tlf no fault exists in the system no fault code will be displayed during normal operation mode and the status led will be on while the compressor is enable he following coding method Two LEDs display the system diagnostics on real time as follows STATUS LED is blinking 5 times in 5 seconds and shut off for the next 5 seconds FAULT LED will blink during the same 5 seconds according to the following table 11 12 SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING No Problem 5 4 3 2 1 0 0 0 0
11. a00 9 00o aoo eso ooo eso 1080 7 40 53 120 MaxNLOADIF4C 127 127 700 800 950 700 0 850 50 85 120 127 800 800 950 0 0 5 12 16 CONTENT SM KXLDCI 2 A 2 GB Airwell Model dependent parameters PXD Unit o PXD50 PXD60 PXD72 PXD80 Nemea 6 6 6 6 7 oo 6 a es 127 12 a 127 42 a 42 tr 12 MaxNLOADIESC a 127 42 127 5 5 ce so eo 6 MaxNLOADPSH 77 e2 eo 67 SM KXLDCI 2 A 2 GB CONTROL SYSTEM 12 17 CONTROL SYSTEM 12 12 2 Outdoor Units SW Parameters Model dependent parameters for DCI50 60 6 NormDecel 1 1 8 8 Step2Freg 1 0 tSteosFreq L 29 MW 31 58 3 LOFLOWH 6 17 18 19 20 21 CTTOH2 98 71 9 28 DECT 60 j O 60 k 30 _____ 31 ProtFregLimit 1 60 33 OptimDeicFreq 1 490 34 EEVMinOperOpenC 5 4 35 EEVMaxOperOpenC 30 9530 36 EEVMinOprOpeH 50 60 144 1 86 60 45 HeaterDisableFlag 0 0O 46 DeiceFregChRY 0 1 0 1 48 SUCTEnable 1 0 0 53 MaxlargCTIC 95 9 55 9 gp Ca EE 59 Jonim
12. 200 205 209 24 218 30 228 233 237 242 246 8 93 Sc 591 600 610 620 629 Pi 2 56 260 265 270 274 8 52 PI 28 288 293 297 302 46 PI 317 322 3 26 331 335 LEGEND TC Total Cooling Capacity kW SC Sensible Capacity kW Power Input kW WB WetBulb Temp DB DryBulb Temp ID Indoor OD Outdoor 5 2 2 Capacity Correction Factors Cooling Cooling Capacity Ratio Vs Outdoor Temperature Capacity Ration 25 30 35 Outdoor Temperature deg C 5 6 SM KXLDCI 2 A 2 GB Airwell PERFORMANCE DATA amp PRESSURE CURVES ID COIL ENTERING AIR DB TEMPERATURE C OD COIL ENTERING AIR DB WB DATA TEMPERATURE 45 16 _ PI O 4182 195 20 P 20 229 J 232 Bh 295 1h 236 249 spp 099 ff 2 7 m P 238 25 24 w IZ oL Ba P 27 2606 02 PI 22 1 25 28 5 P 25 20 283 85 105 of nominal LEGEND TH Total Heating Capacity kW Power Input kW WB WetBulb Temp DB DryBulb Temp ID Indoor OD Outdoor 5 2 4 Capacity Correction Factors Heating Heating Capacity Ratio Vs Outdoor Temperature Capacity Ration 10 5 0 5 Outdoor WB Temperature deg C SM KXLDCI 2 A 2 GB 5 7 PERFORMANCE DATA amp PRESSURE
13. 30 20 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE i OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR NOISE 2 10 10 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz GC 30 DCI Cooling GC 30 DCI Heating 90 1 I I I I I j 90 80 80 Ss ed 70 60 THAT Ll 50 5 40 30 30 7 1NC 30 20 APPROXIMATE 20 APPROXIMATE I THRESHOLD OF LIN THRESHOLD OF ag N3 I T 1 i I HEARING FOR x Ce i 1 TNC HEARING FOR x HE CONTINUOUS TI z SEIT CONTINUOUS NOISE i I i I 1 I NOISE i T CT T Ee 5 10 10 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR NC 20 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz 6 2 SM KXLDCI 2 A 2 GB firwell ELECTRICAL DATA T ELECTRICAL DATA 7 1 Single Phase
14. 1 erregt 30 10 70 1 1 10 13 HSTbad 4 OATbad EX RE 6 Rorbd 7 OFAN CompressorFeedbackLoss 0 8 OFAN IPM fault 0 1 0 0 9 OFANLck 10 OFAN Vospdexceeded 1 0 1 0 1 11 Compressor IPMFautt o 0o 1 0o 1 12 Compressor Lock 7011 1 0 710 ECRIRE NI 1 13 Compressor Vospdexceeded 0 14 Compressor Foldback 10 15 DC undervoltage LD 1 NES FEEN 1 1 Notes 1 ON 0 OFF Whenever this table is updated the installation test procedure and the alarm output function should be updated Only one code is shown Order of priority is 1 32 Diagnostics is continuously ON as long as power is on Heat Sink Over Heating Protection Compressor Over Heating Protection and System Over Power Protection are declared only whenever in Stop Compressor status All faults except the thermistor faults will remain at least 10 seconds This rule comes to serve the monitoring utilities in a case the fault is released quickly it will be still shown under the monitoring utilities Thermistor faults are reported only when they are enabled When the outdoor unit is in fault not protection an in fault signal is sent to the indoor When all the outdoor unit faults are cleared no fault signal is sent to the indoor ofo 2071702 KAI 0 1 ENEN GEEN EEEN 0 EEEN OEREN NUN mW EN
15. 100 to 200 Change to Stand by or Power OFF and re start If the fault is still active replace controller 11 2 5 5 Checking the Compressor Check Compressor connections Repair if needed Use a current probe Clamp to assure that there is an AC current on each phase no more than 15A In case there is no current check the resistance between the three poles Assure the three coil resistances are almost the same between 0 8Q to 1 50 Change to Stand by or Power OFF and re start If the fault is still Active replace controller 11 2 5 6 Checking the Reverse Valve RV The RV has two parts Solonoid and valve Solonoid Running in heating mode check the voltage between two pins of reverse valve connector normal voltage is 230VAC if no power supply to RV Check RV operation with direct 230VAC power supply if OK replace outdoor controller Valve if RV solonoid is OK as above but still no heating operation while compressor is On replace the valve 11 2 5 7 Checking the electrical expansion valve EEV The EEV has two parts drive and valve When Outdoor unit is powered on EEV shall run and have click and vibration For assuring the problem is of the EEV parts perform the installation test and if fails and no other indications in the diagnostics than the problem is with the EEV one or more Drive a step motor ringed on the valve Check the drive voltage should be12VDC Valve if drive is OK as above
16. In case no problematic peripheral check the resistance on the DC bank B amp B on the Power board if it is less than 30Q replace the controller Otherwise replace the burnt fuse In case of frequent burning fuse replace the controller 11 2 5 3 Checking PFC Chock coil Check PFC chock connection repair if needed Dis connect the chock from the controller wire extensions check if the 2 wires of the chock are shorted If shorted OK check between each wire and the metal box If shorted replace chock if not OK open the controller top cover and check if the wire extensions are connected well and if shorted If not shorted replace wires if shorted OK than might be a controller problem replace controller SM KXLDCI 2 A 2 GB 11 17 TROUBLESHOOTING Airwell 11 2 5 4 Checking the Outdoor Fan Motor Check FAN Power and FAN Halls connections Repair if needed Rotate the fan slowly by hand If the fan does not rotate easily check whether something is obstructing the fan or if the fan itself is coming into contact with the outer case preventing it from rotating Correct if necessary otherwise the fan motor bearings have seized Replace the motor If the fan rotates easily use a current probe Clamp to assure AC current on each phase and it is less than 1A In case there is no current check the resistance between the three poles Assure the three coil resistances are almost the same The normal value should be between
17. Units KLX 24 DCI KLX 30 DCI 220 240VAC S0HZ a Starting current is the current when starting the compressor NOTE Power wiring cord should comply with local lows and electrical regulations requirements SM KXLDCI 2 A 2 GB 7 1 Frirwell WIRING DIAGRAMS 8 WIRING DIAGRAMS 8 1 Indoor Unit KLX 24 KLX 30 DCI TRANSFORMER WATER SWITCH CONJ P9 P18 P2 PLUG MAIN KISS SER Ka P3 PA PLUG ROOM SENSOR RAS 2 E SENSOR a MegaTool L gt LEGEND BU BLUE BN BROWN RD RED Y G YELLOW GREEN N L C SM SWING MOTOR xT TERMINAL BLOCK OUTDOOR UNIT 8 2 Outdoor Unit GC 24 Z DCI CHOKE BASE COIL HEATER OPTIONAL P3 Po d GE P4 P1 i ODU CONTROLLER PCBA P10 P12 JP9 LINCOMIN COM EARTH 112131415 6 YIG AC MAINS EMI FILTER PCBA ii EARTH OJ BLACK Mec RED FERRITE CORE COMO COM FERRITE CORE SM KXLDCI 2 A 2 GB 8 1 WIRING DIAGRAMS Airwell 8 3 Outdoor Unit GC 30 DCI DANGER HIGH DC VOLTAGE DO NOT TOUCH WHILE LEDS ARE ON AND 1 MINUTE AFTER POWER OFF OUTDOOR UNIT WIRING DIAGRAM AUXILIARY PORT IOPTION LI OMT CTT OAT
18. according to the indoor fan speed setting Minimum Capacity Setting During test mode protections are disabled except for stop compressor status 12 12 SW Parameters 12 12 1 Indoor Units SW Parameters Model dependent parametes KLX A B KLX 24 KLX 30 NomLoad NomLoadd 59 MaxNLOADIFIC 44 MaxNLOADIF2C 50 120 102 6 4 MaxNLOADIF4C 127 MaxNLOADIF5C 127 MinRTC 2 2 6 127 127 127 127 127 127 127 127 MaxRTH MaxNLOADPSC 61 MaxNLOADPSH 59 1 67 59 67 4 85 50 0 0 7 7 1 67 59 67 SM KXLDCI 2 A 2 GB 12 15 CONTENT CONTROL SYSTEM Model dependent parameters DNG Unit Les IDNG60 onera ones DNG60 DNG72 DNG80 NomLoadC 62 77 57 6 NomLoadH 74 80 5 6 MaxNLOADPSH 74 80 Model dependent parameters WNG WNG Wall Mounted Models Parameter name 25 35 50 60 72 80 NLOAD limits as a function of selected indoor fan speed MaxNLOADIF1C 40 45 50 53 MaxNLOADIF2C 53 62 85 75 EEE 120 42 EER EZA SS KM MaxNLOADIF3C 0 12 7 12 7 12 Indoor Fan speeds 0 70 850 0 0 0 0 0 4 5 12 12 12 MaxNLOADIF5C 53 75 0 7 127 7 127 IFVLOWC 0 850 IFLOWC IFMEDC IFHIGHC IFTURBOC IFVLOWH IFLOWH IFMEDH IFHIGHH IFTURBOH 70 7 soo eso eso 950 1050 oo 1200 70 80 1050 1150 1100 1200 700
19. but still the indoor unit perform no conditioning replace the valve no need to take out the refrigerant just pump down and shut off the main valves 11 2 5 8 Checking the termistors Check Thermistor connections and wiring Repair if needed Check Thermistor resistance between 09 and 40 C should be between 35KQ and 5KQ 11 2 5 9 Checking the communication Change to Stand by or Power OFF and re start If the fault is still Active check Indoor to Outdoor Communication wiring and grounding connections should be less than 2 0Q Repair if needed If IDU failure replace IDU controller that does not respond If ODU failure replace ODU 11 18 SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING 11 2 5 10 Checking for electromagnetic interferance EMC problems EMC troubles to the A C unit Locations most susceptible to noise 1 Locations near broadcast stations where there are strong electromagnetic waves 2 Locations near amateur radio short wave stations 3 Locations near electronic sewing machines and arc welding machines Trouble Either of the following trouble may occur 1 The unit may stop suddenly during operation 2 Indicator lamps may flicker Correction The fundamental concept is to make the system less susceptible to noise insulate for noise or distance from the noise source 1 Use shielded wires 2 Move unit away from the noise source 11 2 5 11 troubles to near by home appliances Loc
20. display board and TROUBLESHOOTING Check the connections and the wiring on the main terminal Repair if needed leds are off PFC Chock coil Check the PFC Chock coil Check 20A fuse on the Filter EEV problem Refrigerant leakage Compressor operates but no capacity Indoor coil block Outdoor coil block EEV problem Refrigerant leakage Compressor is over heated and unit does not generate capacity Indoor coil block Outdoor coil block Compressor stops during Electronic control operation Refrigerant leakage 11 Unit is not operating Communication problems 12 Compressor does not start Electronics control problem or protection Unit works in wrong mode cool instead of heat or heat instead of Electronics or RV problem All components are operating properly but no cooling or no Refrigerant leak heating Compressor motor is generating Phase order to noise and no suction occurs compressor is wrong Freezing of outdoor unit in heat mode and outdoor unit base is blocked with ice The unit stop suddenly during operation EMC interference to the Indoor unit s Indicator s leds unit may flicker SM KXLDCI 2 A 2 GB Check EEV Check refrigeration system Clean filters and or remove block Remove block and or avoid air by pass Check EEV Check refrigeration system Clean filters and or remove block Remove block and or avoid air by pass Check diagnostics Check refrigeration system
21. of outdoor air temperature OAT OAT Range Cooling Mode limits Heating Mode limits 6 lt lt 15 MaxFreqAsOATC MaxFreqAsOAT1H 15 x OAT 28 MaxFreqAsOAT2H 12 1 3 2 Target Frequency Setting for GC 30 The compressor Target Speed is calculated according to the following formula 127 MiniSpeed MaxSpeed are defined as following When the unit is in the cool mode MiniSpeedC 15Hz MaxSpeed 75Hz When the unit is in the heat mode MiniSpeedH 20Hz MaxSpeed 95Hz ODU NLOAD is caculated according to the IDU NLoad DUN Target Speedy max MinSpeed Maxspeed P load ODU NLOAD nin 200020 27 ODUCode ODUCodeC ODUCodeC IDUNLOAD Refer to sect 112 1 2 1 12 1 4 Frequency Changes Control When the unit is running normally the compressor frequency change rate is 1 Hz sec 12 1 5 Compressor Starting Control 12 1 5 1 Compressor starting control for GC 24 Z Step3 Step2 Step1 12 2 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM 12 1 5 2 Compressor starting control for DCI72 80 Step 1 Whenever the compressor starts up after it has been off for more than 45 minutes the compressor frequency cannot go below Step 1RPS for continuous minutes this rule comes to ensure oil return to the compressor Step 2 The compressor speed cannot go above Step2RPS once after each compressor start up for 3 continuous minutes this rule comes to prevent oil exit from the compressor after its start up S
22. 11 2 1 General System Failures and Corrective Actions No Symptom Probable Cause Corrective Action Check power supply If OK check display and display wiring if OK replace controller Indoor unit power supply indicator Red LED does not light up No power supply Check remote control batteries if OK check display and display wiring if OK replace display PCB If still not OK replace controller Remote control message not reached the indoor unit Indoor unit does not respond to remote control message Indoor unit responds to remote control message but Operate Problem with display indicator Green LED does not PCB light up Replace display PCB If still not OK replace controller Unit in heat mode and t Change to cool mode coil is still not warm EE HESE Change operation mode opposite mode Change to high speed and Check power supply to motor is higher than 130VAC for triack controlled motor or higher than 220VAC for fixed speed motors if OK replace capacitor if not OK replace controller Indoor fan does not start louvers are opened and Green LED is ON Problem with controller or capacitor Indoor fan works when unit is OFF and indoor fan speed is not changed by remote control command Water leakage from indoor unit Indoor unit drainage Check and open drainage tube is blocked tube 11 10 Controller problem Replace controller SM KXLDCI 2 A 2 GB No power supply Outdoor unit
23. 5 C DB Heating Indoor 20 C DB Outdoor 7 DB 6 WB 3 1 Operating Limits FC DB 15 C WB 10 C DB Upper limit 27 DB 24 DB 18 WB 10 C DB 15 C DB 16 C WB 198 264V Voltage Upper limit 32 DB 23 WB 46 DB Cooling em 2 SM KXLDCI 2 A 2 GB 3 1 Airwell OUTLINE DIMENSIONS 4 OUTLINE DIMENSIONS 4 1 Indoor Unit KLX 24 KLX 30 DCI 950 Panel 5 vale o T e l Hook E el Ch Nut T Ts AE Ceiling es eee cri 880mm a rud aA we wr ER ur KN 60 DCI KN 72 DCI B 240mm KN 80 DCI B 310mm Remark KN 60 DCI is the same as KN 72 DCI 4 1 SM KXLDCI 2 A 2 GB OUTLINE DIMENSIONS Airwell 4 2 Outdoor Unit GC 24 Z DCI GC 30 DCI H LE m Co mm Co lt AIR OUTLET 4 2 SM KXLDCI 2 A 2 GB Airwell 5 5 1 5 1 1 SM KXLDCI 2 A 2 GB PERFORMANCE DATA amp PRESSURE CURVES KXL 24 DCI GC 24 Z DCI Cooling Capacity kW ID COIL ENTERING AIR DB WB TEMPERATURE OD COIL ENTERING AIR DB TEMPERATURE DATA 22 15 24 17 27 19 29 21 32 23 C 10 20 80 110 96 of nominal protection range SC 80 105 of nominal 25 50 of nominal 25 SC 609 619 628 637 646 PI 181 185 189 193 197 30 Pi 206 210 214 218 222 TC 636 678 720 762 804 35 Sc 562 5 71 580 58
24. 64250004 ContrllrConnectPlate 7721 39 4526968 Grounding wire with magnetic ring LI 40 452674 Outdoor Air Thermistor OAT Ir 41 4523657 PaintedTopCoverAssy Tt 42 4522600 LefiHande 14012 SM KXLDCI 2 A 2 GB 13 7 Airwell APPENDIX APPENDIX A INSTALLATION AND OPERATION MANUAL gt INSTALLATION MANUAL KLX 24 30 DCI gt OPERATION MANUAL KLX 24 30 DCI SM KXLDCI 2 A 2 GB
25. 71 4 452960400 OUTDOORFAN 11 5 461600002 4 WayValveAssy Tt 6 452956700 4 wayvalvecol 7 4526522 Fou WayVaveR410A 8 466130001 DC Motor 70W 830rpm SIC 71FW F170 1 9 4522601 X T nt angel 1 10 4523653 Right Cabinet Assy 1 11 452966200 CompressorTopThermisto CTT 11 12 452956500 SuctionThermisto SUCT 11 13 452677601 OutdoorCoilThermsto OCT 11 14 452809900 Base Plate Painting Assy 1 15 452803300 Compressor Assy TNB220FLBM1 1 16 452783600 Oi SeparatorAssy f 17 452783200 Liquid Gas Separator 121 18 453256100 Support Painting Assy Gas Liquid Separator 1 19 4526080 ValvePlatePaintAssy LL 20 4526513 LowPressValveRATOA 1 1 21 4526514 High Press 11 22 4523654 Painted Right Back Cabinet Assy JL 1 23 4522602 VaveCover 1 24 4518950 jFiterDierBEK 053S5 7 1 1 25 467300005 DispayAssy optona 1 26 2040 CableclipNylon lz 27 467420003 7 Poles Terminal Block 1 28 453138800 TerminalPlate 1 29 4526215 Electronic Expansion Valve ZDPF L 1 6C 01 RK 11 30 4526216 EEVCOILQAL 2 MD O2 171 32 453175500 Guard Net PainingAssy 1 33 453083800 jOATSupprt 171 34 453256000 ChokeAssy 171 35 452809700 Partition Plate 1 36 453170000 Controller 1 37 452888500 Motor Support 38 4
26. 9 5 98 PU 231 235 239 23 247 TC 600 642 684 725 767 40 SC 528 547 556 565 5 74 PI 256 260 264 268 272 TC 556 598 640 682 724 46 SC 510 519 528 527 546 PI 286 290 294 298 3 02 TC SC TC SC TC SC LEGEND TC Total Cooling Capacity kW SC Sensible Capacity kW Power Input kW WB WetBulb Temp DB DryBulb Temp ID Indoor OD Outdoor Cooling Capacity Ratio Vs Outdoor Temperature c c 2 o S a S o 25 30 35 Outdoor Temperature deg C PERFORMANCE DATA 8 PRESSURE CURVES 5 1 PERFORMANCE DATA amp PRESSURE CURVES Airwell 5 1 3 Heating OD COIL ENTERING AIR DB WB TEMPERATURE 10 9 15 12 15 Protection Range 80 120 of nominal LEGEND TH Total Heating Capacity kW Power Input kW WB WetBulb Temp DB DryBulb Temp ID Indoor OD Outdoor 5 1 4 Capacity Correction Factors Heating Heating Capacity Ratio Vs Outdoor Temperature Capacity Ration 10 5 0 5 Outdoor WB Temperature deg C 5 2 SM KXLDCI 2 A 2 GB Airwell PERFORMANCE DATA amp PRESSURE CURVES 5 1 5 Pressure Curves Cooling Test Mode Suction Pressure VS Outdoor Temp Indoor DB WB Temp 29 21 e e 32 23 Sucti
27. CI Outdoor Fan Variable speed DC Inverter M2L cable Port Tubing Connections Flare type interconnecting tubing to be produced on site For further details please refer to the Installation Manual Inbox Documentation Each unit is supplied with its own installation and operation manuals Matching Table R410A INDOOR UNITS OUTDOOR UNITS NN REFRIGER KXL 24 DCI KXL 30 DCI The above table lists outdoor units and KXL DCI indoor units which can be matched together In addition the listed outdoor units can be matched with other types of indoor units such as cassettes floor ceiling For further information please refer to the relevant Service Manual 1 2 SM KXLDCI 2 A 2 GB Airwell 2 PRODUCT DATA SHEET 2 1 KXL 24 DCI GC 24 Z DCI RA10A PRODUCT DATA SHEET Model Indoor Unit KLX 24 DCI Model Outdoor Unit GC 24 Z DCI R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Capacity N Btu hr 24570 5120 27300 27300 5120 30030 kW 7 20 2 50 8 00 8 00 2 50 8 80 Power input kW 2 39 0 60 2 75 2 22 0 50 2 50 EER Cooling or COP Heating 2 W W 3 01 3 63 Energy efficiency class B A Power supply V Rated current Power factor Prated IDU 140 Prated IDU ODU 3000 Sta
28. CURVES Airwell 5 2 5 Pressure Curves Cooling Test Mode Indoor DB WB Temp 22 15 24 17 29 21 32 23 Suction Pressure kPa 35 Indoor DB WB Temp 29 21 32 23 Discharge Pressure kPa 25 30 35 Outdoor DB Temperature C 5 8 SM KXLDCI 2 A 2 GB Airwell PERFORMANCE DATA amp PRESSURE CURVES 5 2 6 Pressure Curves Heating Test Mode Suction Pressure VS Outdoor Temp Indoor DB Temp Suction Pressure kPa 5 0 5 Outdoor WB Temperature C Discharge Pressure VS Outdoor Temp Indoor DB Temp Discharge Pressure kPa 0 Outdoor WB Temperature C SM KXLDCI 2 A 2 GB 5 9 PERFORMANCE DATA amp PRESSURE CURVES Airwell 5 2 7 o z c gt o c Capacity ratio 5 10 Capacity Correction Factor Due to Tubing Length Cooling 12 14 16 18 20 22 24 26 28 30 Tubing length m Heating 12 14 16 158 20 22 24 26 28 30 Tubing Length m SM KXLDCI 2 A 2 GB Airwell SOUND LEVEL CHARACTERISTICS 6 SOUND LEVEL CHARACTERISTICS 6 1 Sound Pressure Level Figure 1 6 2 Soud Pressure Level Spectrum Measured as Figure 1 KLX 24 DCI KLX 30 DCI 90 ER SS 1 T E j 1 90 80 80
29. Hz per minute Stop Compressor SC Compressor is stopped 12 7 1 Indoor Coil Defrost Protection ICT Fast Increasing No Change Decreasing Fast Increasing ICT lt 2 emp EE 5 12 7 2 Indoor Coil Overheating Protection 12 7 2 1 Indoor Coil Overheating Protection For GC 24 Z ICT Trend ICT Fast Fast Decreasing No Change Increasing Decreasing Increasing ICT gt 62 IeT 45 SM KXLDCI 2 A 2 GB 12 7 CONTENT CONTROL SYSTEM Airwell 12 7 2 2 Indoor Coil Overheating Protection For 72 80 ICT Trend a T u 0 lt ICT lt 62 ICT 52 12 7 3 Compressor Overheating Protection 12 7 3 1 Compressor Overheating Protection for GC 24 Z DCI Compressor temperature can be in one of 5 control zones 4 in protection and 1 normal according to the following chart CTT Stop Compressor 105 P3 102 P2 98 P1 94 Normal Compressor Temperature Control Status P Else Increases Stop Compressor Stop Compressor 12 8 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM 12 7 3 2 Compressor Overheating Protection for GC 30 DCI CTT Trend pal Decreasin pact gt 105 gt 105 CTT gt 105 CIT 700s CTT CC AA 12 7 4 Compressor Over Current Protection Only For GC 24 Z DCI CCR A Stop Compresor CCROC4 4 HzDown2 CCROC3 ES HzDown1 NG CCROG2 EMAN UE AMA HOPES ES Stop
30. LOENCASSENE 1 Fs 2114200005 2 E Pans Box Cover tor spr oem cassee o No 2234209183 EPans Box Assy or OEM CASSETIESPL 1 leen wss s 2224200001 Receive waterassy aroem CASSETTES o 9 2224200005 Evaporator Base Assy for OEM casserres 7 ele 282014400 moer Unit Frame Assy OEM GASSETTE90X90 KNAS Amer AUS 1 beer or OEM CASSETIESPL O O 13 2154200010 cassetes 5 ra 200100004 Merai Motor sew eooo o is 2124200001 Base Pan asoy roem casserresee o io 4525590 Pump PSE 12for OEM casserreooen o as oeer Estar len balay EES 20 483043100 OEM CASSETTES0X90 indoor Unit Frame ARWELL Austala214209099 ao anos 73 O I 5 album oee aroutet ao munere 1 md f mo uo O fu A3 fu fud fud _ sech SM KXLDCI 2 A 2 GB 13 3 EXPLODED VIEWS AND SPARE PARTS LISTS Airwell 13 4 Outdoor Unit GC 24 Z DCI MAYA ATE we m 65 17 Te 13 4 SM KXLDCI 2 A 2 GB Airwell EXPLODED VIEWS AND SPARE PARTS LISTS 13 5 Outdoor Unit GC 24 Z DCI Item Description Quan 1 465100000 engm 1 465100000 Grill DCI Trio 1 2 4523652 PANTEDLEFTCABNETASSY 1 s Line COC 5 461025 4WayV
31. Rise CCROC1 rers US MUS LM OE Normal 12 7 5 Heat Sink Overheating Protection 12 7 5 1 Heat Sink Overheating Protection For GC 24 Z DCI HST Trend Fast d i Fast Decreasing No Change Increasing Decreasing Increasing SM KXLDCI 2 A 2 GB 12 9 CONTENT CONTROL SYSTEM Airwell 12 7 5 2 Heat Sink Overheating Protection For GC 30 DCI Delta HST HST e2 fp 12 7 6 System Over Power Protection Only For GC 30 DCI Delta PWR e2000 ramo o 02000 gt 2000_ mm e j j 00 lt PWR lt PWR lt 2950 PWR lt 2300 Norm There are two sets of OVRPWR values the selection of the values are set according to the state of the Power Shed input Power Shed input open Set values 1 Power Shed input sort Set values 2 12 7 7 Outdoor Coil Deicing Protection 12 7 7 1 Outdoor coil Deicing Protection For GC 24 Z DCI gt Entering Deicing Conditions Deicing operation will start when either one of the following conditions exist Case 1 OCT lt OAT 8 AND TLD gt DI Case 2 OCT lt OAT 12 AND TLD gt 30 minutes Case 3 OCT is Invalid AND TLD gt DI Case 4 Unit is just switched to STBY AND OCT lt OAT 8 Case 5 NLOAD 0 AND OCT lt OAT 8 Case 6 OCT lt 19 AND TLD gt 60 minutes All this condition will exist during 10 seconds OCT Outdoor Coil Temperature OAT Outdoor Air Temperature TLD Time from Last Deicing DI Deicing Interval Time Interval Between Two De
32. Service Manual KXL DC Inverter Series Indoor Units Outdoor Units KXL 24 DCI GC 24 DCI Z KXL 30 DCI GC 30 DCI REFRIGERANT R410A HEAT PUMP SM KXLDCI 2 A 2 GB OCTOBER 2008 CONTENT LIST OF EFFECTIVE PAGES Airwell LIST OF EFFECTIVE PAGES Note Changes in the pages are indicated by a Revision in the footer of each effected page when none indicates no changes in the relevant page All pages in the following list represent effected non effected pages divided by chapters Dates of issue for original and changed pages are Original July 2006 Total number of pages in this publication is 122 consisting of the following TIG iatis 2 Pr 2 2 1 1 1 2 2 2 1 2 2 2 On peti a masis 2 4 1 4 2 2 5 1 5 10 2 6 1 6 2 2 gt 2 8 1 8 2 2 Q arein ogean 2 TOS E ituri ats 2 11 1 11 20 2 12 1 12 20 2 13 1 13 7 2 VAN n es 2 Zero in this column indicates an original page Due to constant improvements please note that the data on this service manual can be modified with out notice Photos are not contractual A SM KXLDCI 2 A 2 GB Airwell 10 11 12 13 14 Table of Contents INTRODUCTION namana d ua nie ddr pads PRODUCT DATA SHEET
33. actions N Fault Probable Cause Corrective Action 0 Sensors not connected or Check sensor connections 1 4 Sensor failures damaged or replace sensor Communication Indoor and Outdoor controllers 7 TS Replace Indoor controller mismatch are with different versions D Communication or grounding Check Indoor to Outdoor No Communication BE NG wiring is not good wiring and grounding Check motor wiring if ok No Encoder Indoor electronics or motor replace motor if still not ok replace Indoor controller 1 Outdoor Unit Fault Outdoor controller problem WILD lo ROO diagnostics System is using ROM No action unless special jou Net parameters and not EEPROM parameters are required for P parameters unit operation No action unless special 25 Bad EEPROM parameters are required for unit operation 26 Bad Communication Communication quality is low Check Indoor to Outdoor reliability wiring and grounding 11 2 5 Procedures for checking Main Parts 11 2 5 1 Checking Mains Voltage Confirm that the Mains voltage is between 198 and 264 VAC If Mains voltage is out of this range abnormal operation of the system is expected If in range check the Power Circuit Breaker and look for broken or loosed cable lugs or wiring mistake s 11 2 5 2 Checking Main fuse Check 20A fuse on the Filter Board If burnt check the compressor fan or any other peripheral that can cause a short In case of a problematic peripheral replace it
34. ations most susceptible to noise 1 A television or radio is located near the A C and A C wiring 2 The antenna cable for a television or radio is located close to the A C and A C wiring 3 Locations where television and radio signals are weak Trouble 1 Noise appears in the television picture or the picture is distorted 2 Static occurs in the radio sound Correction 1 Select a separate power source 2 Keep the A C and A C wiring at least 1 meter away from wireless devices and antenna cables 3 Change the wireless device s antenna to a high sensitivity antenna 4 Change the antenna cable to a BS coaxial cable 5 Use a noise filter for the wireless device 6 Use a signal booster 11 2 6 Precaution Advise and Notice Items 11 2 6 1 High voltage in Outdoor unit controller Whole controller including the wires connected to the Outdoor unit controller may have the potential hazard voltage when power is on Touching the Outdoor unit controller may cause an electrical shock Advise Don t touch the naked lead wire and don t insert finger conductor or anything else into the controller when power is on 11 2 6 2 X Charged Capacitors Three large capacity electrolytic capacitors are used in the Outdoor unit controller Therefore charging voltage 380VDC remains after power down Discharging takes about one minute after turned off Touching the Outdoor unit controller before discharging may cause an electrical shock Wh
35. aweAey 1 6 462209 1 7 4526622 FOURWAYVANERMOR s DoMdor wsP 1 9 49 90 1 10 4523653 PAINTEDRIGHTGABINETASSY 1 462675 CompesserTopThemstrCT To EU OMTThermisiofomT 18 482877601 Outdoor Col Themis 452809000 BasePlatePainingAssy 15 4600800008 compressor Assy C 7RVNTSSHOW SANYO Shenvang 1 16 CSCC Support Painting Support Assy Gas Liquid Separator 4523654 PAINTED RIGHT BACK CABINET ASSY 4518950 Filter Drier BFK 053S 204107 Cable clip Nylon 467420003 7 Poles Terminal Block 464280001 Terminal Plate DCI 72Z 4526215 Electronic expansion valve ZDPF L 1 6C 01 RK for R410A 462300002 Condenser Assy DCI 3 0KW EMI Fillter Board 901A 574 00 SM KXLDCI 2 A 2 GB 13 5 EXPLODED VIEWS AND SPARE PARTS LISTS Airwell 13 6 Outdoor Unit GC 30 DCI La j 4 7 X o acr d pa y b 7 4 13 6 SM KXLDCI 2 2 GB Airwell EXPLODED VIEWS AND SPARE PARTS LISTS 13 7 Outdoor Unit GC 30 DCI E 2 4503659 PAINTED LEFT ASNETASSY 3 4523758 NutMBleft C 1
36. door Unit Dry Contact Indoor unit Dry contact has two alternative functions that are selected by J9 Presence Detector J9 open limit Force to STBY Connection J9 short Power Shedding Function Limit NLOAD 12 9 Operating the Unit from Mode Button Forced operation allows to start stop and operate in Cooling or Heating in pre set temperature according to the following table Forced operation Mode Pre set Temperature SM KXLDCI 2 A 2 GB 12 13 CONTROL SYSTEM 12 10 12 10 1 On Unit Controls and Indicators Indoor Unit controller Controls and Indicatiors for All Models Except for Floor Ceiling model During OFF Fan Cool Heat Dry and Auto modes for operation in other modes see at the relevant spec paragraph STAND BY INDICATOR OPERATION INDICATOR FILTER INDICATOR COOLING INDICATOR HEATING INDICATOR Mode SWITCH COOL HEAT OFF RESET FILTER SWITCH 12 10 2 Unit has three LED s 1 Lights up when the Air Conditioner is connected to power and ready to receive the R C commands 1 Lights up during operation 2 Blinks for 300 msec to announce that a R C infrared signal has been received and stored 3 Blinks continuously during protections according to the relevant spec section TIMER INDICATOR Lights up during Timer and Sleep operation Lights up when Air Filter needs to be cleaned Lights up when system is switched to Cool Mode by using the Mode Switch on th
37. door temperature down to 10 C Heating operation at outdoor temperature down to 15 C Supports Indoor Air Quality features such as lonizer Active Electro Static Filter Indoor large diameter cross flow fan allowing low noise level operation Bended indoor coil with treated aluminum fins and coating for improved efficiency Easy access to the interconnecting tubing and wiring connections Automatic treated air sweep Low indoor and outdoor noise levels Easyinstallation and service Refrigerant pipes can be connected to the indoor unit from 6 different optional directions Water condensate tray is equipped with two optional drain connections Control The microprocessor indoor controller and an infrared remote control supplied as standard provide complete operating function and programming Remote controllers RC 3 4 uBMS Networking system Airconet version 4 2 and up MIU SW version H8 and up For further details please refer to the Operation Manual Appendix A 1 1 INTRODUCTION Airwell 1 4 1 5 1 6 1 7 1 7 1 Outdoor Unit The DCI outdoor units can be installed as floor or wall mounted by using a wall supporting bracket The metal sheets are protected by anti corrosion paint work allowing long life resistance All outdoor units are pre charged For further information please refer to the Product Data Sheet Chapter 2 GC 242 GC 30 Outdoor Unit Feature GC 24 Z GC 30 D
38. e unit Lights up when system is switched Heat Mode by using the Mode Switch on the unit Every short pressing the next operation mode is selected in this order SB Cool Mode Heat Mode SB In long pressing system enters diagnostic mode For short pressing When Filter LED is on turn off the FILTER INDICATOR after a clean filter has been reinstalled When Filter LED is off enable disable the buzzer announcer if selected In long pressing system enters set up mode if in SB Outdoor Unit controller Indicatiors SB LED is ON when power is ON 230 VAC even when no communication STATUS LED is ON when COMP is ON and Blinks according to diagnostics mode definitions when either fault or protection occurs FAULT LED Blinks according to diagnostics mode definitions when either fault or protection occurs 12 14 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM 12 11 Test Mode 12 11 1 Entering Test Mode System can enter Test mode in two ways Automatically when the following conditions exists for 30 minutes continuously Mode Cool Set point 16 Room temperature 27 1 2 Outdoor temperature 35 2 1 Or Mode Heat Set point 30 Room temperature 2041 Outdoor temperature 7 1 2 Manually when entering diagnostics with the following settings Mode Cool Set point 16 Mode Heat Set point 30 12 11 2 Unit Operation in Test Mode In test mode the unit will operate in fixed settings
39. en open the Outdoor unit controller cover don t touch the soldering pin by hand or by any conductive material SM KXLDCI 2 A 2 GB 11 19 TROUBLESHOOTING Arwel 11 2 6 3 Advise Open the Outdoor unit controller cover only after one minute from power off Measure the electrolytic capacitors voltage before farther checking controller Additional advises When disassemble the controller or the front panel turn off the power supply When connecting or disconnecting the connectors on the PCB hold the whole housing don t pull the wire there are sharp fringes and sting on shell Use gloves when disassemble the A C units 11 20 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM 12 CONTROL SYSTEM 12 1 General Functions and Operating Rules The DCI software is fully parametric All the model dependent parameters are shown in Blue color and with Italic style parameter The parameters values are given in the last section of this control logic chapter of the service manual 12 1 1 System Operation Concept The control function is divided between indoor and outdoor unit controllers Indoor unit is the system Master requesting the outdoor unit for cooling heating capacity supply The outdoor unit is the system Slave and it must supply the required capacity unless it enters into a protection mode avoiding it from supplying the requested capacity The capacity request is transferred via indoor to outdoor communication and is represented by apa
40. icing Deicing interval time when compressor is first started in heat mode is 10 minutes if OCT lt 2 and is 40 minutes in other cases Deicing interval time is changed increased decreased in 10 minutes steps as a function of deicing time If deicing time is shorter then former deicing time the deicing interval time will be increased If deicing time is longer then former deicing time the deicing interval time will be decreased CONTENT 12 10 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM gt Deicing Operation Procedure OCT Threshold ON T1 12 2471 Gs FEET r DeiceFreqdhRv DT max 12 minutes HEAT RV COOL 43 13 lt ON OFAN OFF EEVDeicerOpen EEV x Any T1260 secondes T2 36 secondes T3 6 secondes 12 7 7 2 Outdoor coil Deicing Protection For GC 30 DCI gt Entering Deicing Conditions Deicing operation will start when either one of the following conditions exist Case 1 OCT lt OAT 8 AND TLD gt Case 2 OCT lt OAT 12 AND TLD gt 30 minutes Case 3 OCT is Invalid AND TLD gt DI Case 4 Unit is just switched to STBY AND OCT lt 8 Case 5 NLOAD 0 AND lt OAT 8 Case 6 OAT is invalid AND OCT 8 AND TLD gt D AND Compressor ON Time gt 15 minutes All this condition will exist during 400 seconds OCT Outdoor Coil Temperature OAT Outdoor Air Temperature TLD Time from Last Deicing DI Deicing Interval Time Interval between Two
41. idn t help Bad Communication Bad communication lines See 18 21 Heatsink Over Check that the airflow around Compressor stopped due to the ODU is free and the fan is 20 21 2 3 4 5 7 8 SM KXLDCI 2 A 2 GB 11 15 TROUBLESHOOTING Airwell 11 2 4 Fault Code for Indoor unit Pressing Mode button for long will activate diagnostic mode by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LED s Entering diagnostics in STBY mode allows only viewing of status fault display In diagnostic mode system problems information will be indicated by blinking of Heat amp Cool LED s The coding method will be as follows Heat led will blink 5 times in 5 seconds and then will be shut off for the next 5 seconds Cool Led will blink during the same 5 seconds according to the following table N FautName 1 0 3 RE25dsemesd Jolo ol 4 RE2semd ER Remd 7 Communication mismatch 9 i 78 NoCommunicaion La ES 9 No Ensor La ES 10 Reseved 3 outdoor unita fo IL _ 1 ON 0 OFF Only one code is shown Order of priority is lower to the higher number Diagnostics is continuously ON as long power is on 1 EBEN ENEN 2 0 1 102 IE ER 11 16 SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING 11 2 4 1 Indoor unit diagnostics and corrective
42. ions Remove obstructions Replace capacitor Replace motor 11 5 TROUBLESHOOTING Probable Cause Corrective Action Overload safety device on compressor is cut out low voltage or high temperature Check for proper voltage switch off power and try No cooling or 9 again after one hour heating takes place indoor and outdoor fans working Replace compressor capacitor Compressor run capacitor faulty Compressor windings Replace compressor are shorted Check voltage repair wiring Indoor fan motor is if necessary blocked or turns slowly indoor fan run capacitor faulty motor windings are shorted No air supply at indoor unit compressor operates Check fan wheel if it is tight enough on motor shaft tighten if necessary Replace indoor fan motor Lack of refrigerant will accompanied by whisteling noise cause ice formation on indoor unit coil in cooling mode Partial limited air supply at indoor indoor unit Charge the unit after localizing leak Water accumulates and overflow from indoor unit section Water dripping from outdoor unit base heating mode Freeze up of outdoor coil in heating mode poor heating effect in room indoor fan operates 11 6 Drain tube or spout of drain pan clogged Water drain outlet is clogged Faulty outdoor thermistor Faulty control cable Outdoor temperature is too low belo
43. lem with display Replace display PCB Operate indicator Green PCB If still not OK replace controller LED does not light up hoat mode ang Change to cool mode and check coil is still not warm Change to high speed and Check Indoor fan does not start power supply to motor is higher ONE dre Opened gno eE on than 130VAC for triack controlled Green LED does light up motor or higher than 220VAC for capacitor 5 fixed speed motors if OK replace capacitor if not OK replace controller unit is OFF and indoor fan speed is not changed PCB problem Replace controller by remote control command Compressor does not Electronics control Perform diagnostics and follow start problem or protection the actions described Compressor stops during operation and Green LED remains on Electronic control or Perform diagnostics and follow power supply problem the actions described Check outdoor fan motor according to the procedure below if not OK replace controller Compressor is on but Problem with outdoor outdoor fan does not work electronics or outdoor fan Indoor fan works when 5 SM KXLDCI 2 A 2 GB TROUBLESHOOTING Airwell No Symptom Probable Cause Corrective Action Check RV power connections if Unit Works in wrang mode Electronics or power OK F cool instead of heat or Connection to RV check RV operation with direct heat instead of cool 230VAC power supply if OK replace outdoor control
44. ler All components are 10 operating properly but no Refrigerant leak Check refrigeration system cooling or no heating Compressor is over heated and unit does not EEV problem Check EEV generate capacity Units goes into 12 Control problem or refrigeration system problem protections and compressor is stopped with no clear reason Perform diagnostics and follow the actions described Compressor motor is 13 generating noise and no suction occurs Water leakage from Indoor unit drainage tube Check and open drainage tube indoor unit is blocked Freezing of outdoor unit in heat mode and outdoor 19 unit base is blocked with Connect base heater ice Unit operates with wrong Perform diagnostics and check 16 fan speeds or wrong Wrong jumper settings if units is operating by EEPROM frequency parameters Phase order to Check compressor phase order compressor is wrong 11 1 2 Checking the refrigeration system Checking system pressures and other thermodynamic measures should be done when system is in Test Mode in Test mode system operates in fixed settings The performance curves given in this manual are given for unit performance in test mode when high indoor fan speed is selected Entering test mode Set unit to Cool 16 degrees High indoor fan speed or Heat 30 degrees High indoor fan speed and enter diagnostics SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING 11 1 3 Judgment by Indoor Outdo
45. ll 13 2 Indoor Unit KXL 24 DCI No Part No Item Description essor Boue morora SF 72 aersooss DOI KN contoleringoor Units ERKEND 7 a OOOO 4 2114200004 Box Cover forSPLOEW 75 2114200005 2 E Pans Box Cover2forSPLOEM CASSETTE 1 76 2114200008 e Pars fr SPL OEM CASSETTE 1 Ear 2224200052 Recieve materAssy or SPLOEM o 2224209003 Evaporator Base Assy oem casserres 1 oem 283014400 indoor Unt Frame Assy OEM CASSETTES0X90 KNZ4 Amer AUS 1 Erem Fanassy r spr cassee a 1 eoo meal weer sam 0740700022 15 2124200080 Base Pan Assy orse oem CASSETTE 1 e Pump PSB 12 or OEM CASSETTE Ji Earias Ear 27 be r men ze Jansma ao 483043100 OEM CASSETTES0X90 Indoor Uni Frame ARWELL Asp 1 Backboard amount 73 aneor 2 ac ao amomo Back boar artis UI mma lt AI sech sech sech gt gt gt 13 2 SM KXLDCI 2 A 2 GB CONTENT Airwell EXPLODED VIEWS AND SPARE PARTS LISTS 13 3 Intdoor Unit KXL 30 DCI No ranno Ja 72 Lem ee KN Contolerndoor Unis Horia i lee TRANSFORWERASSY 111 Na 2114200004 veearts Box Covert tor SP
46. meters are required for unit operation DC under over Voltage Electronics HW prob Check outdoor unit pow lem er supply voltage Indoor Outdoor unit Indoor and Outdoor Communication mis controllers are with Replace Indoor controller match different versions Laos Communication ei Check Indoor to Outdoor 7 No Communication grounding wiring is not e wiring and grounding Switch unit to STBY and Compressor Lock restart Communication quality is Check Indoor to Outdoor Bad Communication Kms e low reliabilit wiring and grounding SM KXLDCI 2 A 2 GB 11 7 CONTENT 5 AC under Voltage Check outdoor unit pow er supply voltage TROUBLESHOOTING Arwel 11 1 6 Judgment by MegaTool MegaTool is a special tool to monitor the system states Using MegaTool requires A computer with RS232C port A connection wire for MegaTool A special MegaTool software Use MegaTool according to following procedure Setup MegaTool software copy the software to the computer Connect RS232C port in computer with MegaTool port in Indoor Outdoor unit controller by the connection wire Run the software and choose the COM port you can monitor the A C system state In monitor tab 11 1 7 Simple procedures for checking the Main Parts 11 1 7 1 Checking Mains Voltage Confirm that the Mains voltage is between 198 and 264 VAC If Mains voltage is out of this range abnormal operation of the system is expected If in range check the Po
47. nted Compensation Disabled Compensation Enabled Compensation Enabled Compensation Disabled Ducted Compensation Enabled Compensation Disabled Floor Ceiling Compensation Disabled Compensation Enabled 12 4 2 Indoor Fan Control in Heating Mode Indoor fan speed depends on the indoor coil temperature IFAN Speed Turbo Any VL Stop Stop Fan ICTVLSpeed ICTLSpeed ICTHSpeed ICTTSpeed 12 5 Auto Cool Heat Mode When in auto cool heat mode unit will automatically select between cool and heat mode according to the difference between actual room temperature and user set point temperature T Unit will switch from cool to heat when compressor is off for 3 minutes and T 3 Unit will switch from heat to cool when compressor is off for 5 minutes and T 3 12 6 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM 12 6 Dry Mode As long as room temperature is higher then the set point indoor fan will work in low speed and compressor will work between 0 and MaxNLOADIF1C Hz When the room temperature is lower than the set point compressor will be switched OFF and indoor fan will cycle 3 minutes OFF 1 minute ON 12 7 Protections There are 5 protection codes Normal Norm unit operate normally Stop Rise SR compressor frequency can not be raised but does not have to be decreased HzDown1 D1 Compressor frequency is reduced by 2 to 5 Hz per minute HzDown2 D2 Compressor frequency is reduced by 5 to 10
48. on Pressure kPa e e 20 25 30 35 Outdoor DB Temperature C Discharge Pressure VS Outdoor Temp Indoor DB WB 29 21 32 23 Discharge Pressure kPa 25 30 35 Outdoor DB Temperature C SM KXLDCI 2 A 2 GB 5 3 PERFORMANCE DATA amp PRESSURE CURVES Airwell 5 1 6 Pressure Curves Heating Test Mode Suction Pressure VS Outdoor Temp Indoor DB Temp Suction Pressure kPa 0 Outdoor WB Temperature C Discharge Pressure VS Outdoor Temp Indoor DB Temp Discharge Pressure kPa 0 5 Outdoor WB Temperature C 5 4 SM KXLDCI 2 A 2 GB Airwell PERFORMANCE DATA amp PRESSURE CURVES 5 1 7 Capacity Correction Factor Due to Tubing Length Cooling 9 c gt O Q 12 14 16 18 20 22 24 26 28 30 Tubing Heating Capacity ratio 12 14 16 18 20 22 24 26 28 30 Tubing Length m SM KXLDCI 2 A 2 GB 5 5 PERFORMANCE DATA amp PRESSURE CURVES Airwell 5 2 KLX 30 DCI GC 30 DCI 5 2 1 Cooling Capacity kW ID COIL ENTERING AIR DB WB TEMPERATURE OD COIL ENTERING AIRDB DATA 22 5 24 17 27 19 29 21 32 23 TEMPERATURE C 40 20 80 110 96 of nominal 80 105 of nominal protection range 25 50 of nominal 25 Sc 641 651 660 670 679 Pi
49. oor fan does not function correctly The compressor does not start up The refrigeration system does not function correctly No cooling or heating only indoor fan works Only indoor fan and compressor working Only indoor fan working SM KXLDCI 2 A 2 GB Check the voltage between indoor fan terminals on the main P C B There is voltage between outdoor fan terminals on the outdoor unit There is no voltage between outdoor fan terminals on the outdoor unit Check voltage on compressor terminals on the outdoor unit with ampmeter Check if there is correct voltage between compressor terminals on the outdoor unit Check for leaks or restrictions with ampmeter pressure guage or surface thermometer Outdoor fan motor faulty or other fault caused compresssor overload protection cut out Outdoor fan blocked Run capacitor of outdoor fan motor faulty Windings of outdoor fan are shorted If there is no voltage replace main P C B Replace capacitor or motor Check and repair electrical wiring between indoor and outdoor units If no voltage replace main If low voltage repair power supply If the voltage corrrect replace capacitor or compressor If there is no voltage repair electrical wiring between indoor and outdoor units Repair refrigeration system and charge refrigerant if necessary Replace P C B Outdoor fan blocked remove obstruct
50. or Unit Diagnostics Enter diagnostics mode press for five seconds Mode button in any operation mode Acknowledgment is by 3 short beeps and lights of COOL and HEAT LED s Then every short pressing of Mode button will scroll between Indoor and Outdoor unit diagnostic modes by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LED s During the Outdoor unit diagnostics all four Indoor LED s STBY Operate Filter and Timer are blinking When Indoor diagnostics is displayed all four LED s STBY Operate Filter and Timer are ON When system enters diagnostics mode only one fault code is shown Order of priority is from the lower to the higher number Diagnostics is continuously ON as long as power is ON The current system operation mode will not be changed If no fault occurred in the system no fault code will be displayed during normal operation mode The last fault code will be displayed even if the system has recovered from that fault The last fault will be deleted from the EEPROM after the system has exit diagnostics mode In diagnostics mode system fault status will be indicated by blinking of Heat amp Cool LEDs The coding method will be as follows Heat LED will blink 5 times in 5 seconds and then will be shut off for the next 5 seconds Cool LED will blink during the same 5 seconds according to the following Indoor Outdoor unit tables Note 0 OFF 1 11 1 4 Indoor Unit Diagnostics IN
51. or motor replace motor if still not ok replace Indoor controller Outdoor Unit Fault Outdoor controller problem SEH lo meen diagnostics EEPROM Not System is using ROM No action unless special Updated parameters and not parameters are required for i EEPROM parameters unit operation No action unless special 7 Bad EEPROM parameters are required for unit operation Bad Communication quality is Check Indoor to Outdoor Communication low reliability wiring and grounding No problem System is Using EEPROM using EEPRRRROM data parameters If the voltage is low repair power supply 4 3 5 There is no correct voltage between the line and neutral terminals on main P C B The power supply indicator red led doesn t light up If there is no voltage repair general wiring x If there is correct voltage replace main or display P C B S TThe operating indicator green The remote control Replace batteries of the led does not light batteries are discharged remote control up The operating indicator green led does not light up when starting from unit Check main P C B and display P C B Replace P C B if necessary Check the voltage between indoor fan If there is voltage replace terminals on the main capacitor or motor P C B The indoor fan does not function correctly SM KXLDCI 2 A 2 GB Probable Cause TROUBLESHOOTING Corrective Action The outd
52. r Tube ONDAN When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along the suction line at the lowest point of the riser Incase the indoor unit is installed above the outdoor no trap is required Applicable for DNG18 only for DNG24 44 oil traps are not required Outdoor 1 E H F Indoor 19 10 1 SM KXLDCI 2 2 GB CONTENT Airwell TROUBLESHOOTING 11 TROUBLESHOOTING 11 1 Troubleshooting for GC 24 Z DCI WARNING When Power Up the whole outdoor unit controller including the wiring is under HIGH VOLTAGE Never open the Outdoor unit before turning off the Power When turned off the system is still charged 400V It takes about 3 Min to discharge the system Touching the controller before discharging may cause an electrical shock 11 1 1 Single Split System failures and Corrective Actions No Symptom Probable Cause Corrective Action Check power supply If power supply is OK check display and display wiring if OK replace controller Power supply indicator Red LED does not light No power supply up Check remote control batteries Remote control message if batteries are OK check display not reached the indoor and display wiring if OK replace unit display PCB If still not OK replace controller Unit does not respond to remote control message Unit responds to remote control message but Prob
53. r will be ON continuously in HEAT mode 12 2 Fan Mode In high medium low indoor fan user setting unit will operate fan in selected speed In AutoFan user setting fan speed will be adjusted automatically according to the differencebetween actual room temperature and user set point temperature SM KXLDCI 2 A 2 GB 12 5 CONTROL SYSTEM Airwell 12 3 Cool Mode NLOAD is calculated according to the difference between actual room temperature and user set point temperature by PI control In high medium low indoor fan user setting unit will operate fan in selected speed In AutoFan user setting fan speed will be adjusted automatically according to the calculated NLOAD 12 4 Heat Mode NLOAD is calculated according to the difference between actual room temperature and user set point temperature by PI control In high medium low indoor fan user setting unit will operate fan in selected speed In AutoFan user setting fan speed will be adjusted automatically according to the calculated NLOAD 12 4 1 Temperature Compensation In wall mounted ducted and cassette models 3 degrees are reduced from room temperature reading except when in l Feel mode to compensate for temperature difference between high and low areas in the heated room and for coil heat radiation on room thermistor The temperature compensation can be enabled disabled by shortening of J2 on the indoor unit Controller J2 Shorted J2 Opened Wall mou
54. rameter called NLOAD NLOAD is an integer number with values between and 127 and it represents the heat or cool load felt by the indoor unit 12 1 2 Compressor Frequency Control 12 1 2 1 NLOAD setting The NLOAD setting is done by the indoor unit controller based on a PI control scheme The actual NLOAD to be sent to the outdoor unit controller is based on the preliminary LOADcalculation the indoor fan speed and the power shedding function NLOAD limits as a function of indoor fan speed Indoor Fan Speed Maximum NLOAD Cooling Maximum NLOAD Heating Indoor Fan Speed Maxium NLOAD Cooling Maxium NLOAD Heating w MaxNLOADIF1C MaxNLOADIF1H Medium MaxNLOADIF2C MaxNLOADIF2H High MaxNLOADIFC 1 MaxNLOADIFIH L Auge MaxNLOADIFSC MaxNLOADIF5H NLOAD limits as a function of power shedding Mode Power Shedding OFF Power Shedding ON Cooling No limit Nominal Cooling Heating Nolimit Nominal heating 12 1 3 Target Frequency Setting 12 1 3 1 Target Frequency Setting for GC 24 Z The compressor target frequency is a function of the NLOAD number sent from the indoor controller and the outdoor air temperature Basic Target Frequency Setting NLOAD 127 Maximum Frequenc 10 lt NLOAD lt 127 Interpolated value between minimum and maximum frequency 10 Minimum frequency Compressor is stopped SM KXLDCI 2 A 2 GB 12 1 CONTROL SYSTEM Airwell Target frequency limits as a function
55. rting current 15 Circuit breaker rating 20 Fan type amp quantity Centifugal x 1 Fan speeds 740 700 620 Air flow 2 1230 1120 980 External static pressure 0 Sound power level 9 61 59 56 Sound pressure level 52 50 47 Moisture removal Condenstate drain tube I D 2 5 16 INDOOR Dimensions 840x840x230 Net Weight 36 Package dimensions 1011x931x263 Packaged weight 40 Units per pallet 6 Stacking height 6 levels Refrigerant control EEV Compressor type model Two Rotary Sanyo Sheny C 7RVN153HOW Fan type amp quantity Propeller direct x 1 Fan speeds 850 Air flow 3600 Sound power level 66 Sound pressure level 4 Dimensions 56 950x835x412 Net Weight 64 5 Package dimensions 1080x910x477 Packaged weight 72 OUTDOOR Units per pallet 4 Stacking height 2 levels Refrigerant type R410A Standard charge 2 3kg Additional charge 7 5msLengths20m 0g 20msLengths30m 300g Connections between units Liquid line 3 8 9 53 Suction line Max tubing length 5 8 15 88 30 Max height difference 15 Operation control type Remote control Heating elements Others 1 Rating conditions in accordance with ISO 5151 and ISO 13253 for ducted units 2 Airflow in d
56. sor temperature A target compressor temperature is set depending on frequency and outdoor air temperature and the actual compressor temperature is compared to the target temperature to set the required correction to the EEV opening 12 4 SM KXLDCI 2 A 2 GB Airwell CONTROL SYSTEM 12 1 9 2 EEV Control for DCI72 7 27 80 The target EEV value is the sum of open loop value OL and a result of the accumulative correction values CV EEV gt EEV The EEV intial value OL is defined as follow EEV EEVBaseOpenLoop EEVOpenLoopCpctyCrct EEVTubeCompnst Basic EEV open loop Open Loop correction sa 05 SEI compensation GC30 GC 30 GC 30 For DCI72Z The initial EEV is defined in accordance to the compressor frequency EEVcv is a correction value for the EEV opening that is based on the compressor temperature During the first 6 minutes after SB the correction is not calculated After that the correction value is updated every 30 seconds 12 1 10 RV Reversing Valve Control Reversing valve is on in heat mode Switching of RV state is done only after compressor is off for over 3 minutes 12 1 11 loniser Control loniser is on when unit is on AND indoor fan is on AND loniser power switch on loniser is on 12 1 12 Base Heater Control The base heater will be working only when RV is ON according to the following graph Base Heater OFF ON 0 gt OAT When OAT is faulty the base heate
57. tems 11 1 8 1 High voltage in Outdoor unit controller Whole controller including the wires that are connected to the Outdoor unit controller may have the potential hazard voltage when power is on Touching the Outdoor unit controller may cause an electrical shock Advise Don t touch the naked lead wire and don t insert finger conductor or anything else into the controller when power is on 11 1 9 Charged Capacitors Three large capacity electrolytic capacitors are used in the Outdoor unit controller Therefore charging voltage 380VDC remains after power down Discharging takes about four minutes after power is off Touching the Outdoor unit controller before discharging may cause an electrical shock 11 1 10 Additional advises When disassemble the controller or the front panel turn off the power supply When connecting or disconnecting the connectors on the PCB hold the whole housing don t pull the wire There are sharp fringes and sting on shell Use gloves when disassemble the A C units SM KXLDCI 2 A 2 GB 11 9 TROUBLESHOOTING Airwell 11 2 Troubleshooting for GC 30 DCI WARNING When Power Up the whole outdoor unit controller including the wiring is under HIGH VOLTAGE Never open the Outdoor unit before turning off the Power When turned off the system is still charged 400V It takes about 1 Min to discharge the system Touching the controller before discharging may cause an electrical shock
58. tep 3 The speed cannot go higher than Step3RPS unless it was operating for more than 1 continuous minutes between Step3RPS 5 and Step3RPS After passing above Step3RPS this rule is re applied when passing below Step3RPS 5 12 1 6 Minimum On and Off Time 3 minutes 12 1 7 Indoor Fan Control 8 Indoor fan speeds are determined for each model 4 speeds for cool dry fan modes and 4 speeds for heat mode When user sets the indoorfan speed to a fixed speed Low Medium High unit will operate constantly at set speed When Auto Fan is selected indoor unit controller can operate in all speeds The actual speed is set according to the cool heat load 12 1 7 1 Turbo Speed The Turbo speed is activated during the first 30 minutes of unit operation when auto fan speed is selected and under the following conditions Difference between set point and actual room temperature is bigger then 3 degrees Room temperature gt 22 for cooling or 25 for heating 12 1 8 Outdoor Fan Control 12 1 8 1 Outdoor Fan Control for DCI50 60 7 outdoor fan speeds are determined for each model 3 speeds for cool and dry modes and 3 speeds for heat mode and a very low speed Outdoor fan speed is a function of compressor frequency and outdoor air temperature OAT 4 routines for fan control are determined The control routine selection depends on operation mode compressor speed outdoor air temperature OAT and heat sink temperature HST Routine Condi
59. tions Heating with OAT 15 Or Cooling with OAT gt 20 Or Faulty OAT Cooling with 20 gt OAT gt 7 C C Cooling with 7 C gt OAT D Heating with OAT gt 15 C SM KXLDCI 2 A 2 GB 12 3 CONTROL SYSTEM Airwell OFAN Speed Compressor When compressor is switched to OFF and the heat sink temperature is above 55 degrees the outdoor fan will remain ON in low speed for up to 3 minutes OFAN State HST at Cool Mode 3 Degrees A 3 Degrees re Change To Higher OFAN Cool state 1 N N N Ec lower OFAN Cool state Note Periorities gt gt 1 If State C change to B If State B change to A 12 1 8 2 Outdoor Fan Control for GC 24 Z GC 30 OFAN operates between any speed OFMinRPM to OFMaxRPM The fan speed is also related to protections and OMT value For DCI 722 in heating mode the OFAN speed is related to OCT 12 1 9 EEV Electronic Expansion Vavle Control 12 1 9 1 EEV Control for DCI50 60 EEV opening is defined as EEV EEVOL EEVCV EEVOL is the initial EEV opening as a function of the compressor frequency operation mode unit model and capacity EEVCV is a correction value for the EEV opening that is based on the compressor temperature During the first 5 minutes of compressor operation EEVCV 0 Once the first 5 minutes are over the correction value is calculated as follow EEVCV n EEVOV n 1 EEVCTT EEVCTT is the correction based on the compres
60. ucted units at nominal external static pressure 3 Sound power in ducted units is measured at air discharge 4 Sound pressure level measured at 1 meter distance from unit SM KXLDCI 2 A 2 GB 2 1 PRODUCT DATA SHEET Airwell 2 2 KXL 30 DCI GC 30 DCI Model Indoor Unit KXL 30 DCI Model Outdoor Unit GC 30 DCI Installation Method of Pipe Flared 1 Btu hr 27280 6800 30000 30690 5110 34100 Capacity 8 0 2 0 8 8 9 0 2 5 10 0 Power input 1 2 65 0 5 3 2 2 60 0 5 3 1 12 Circuit breaker rating Fantype amp quanty _ 58075401500 12701700070 Ewmasmicpesue MnMa Condenstate drain tube LD mm 1019375333 Sach Propeller direct x 1 Air flow Sound power level Sound pressure level a Dimensions kg Refrigeranttype ROA Connections between units Operation control type Remote control Heating elements Option Others ero v E 1 Rating conditions in accordance with ISO 5151 and ISO 13253 for ducted units 2 Airflow in ducted units at nominal external static pressure 3 Sound power in ducted units is measured at air discharge 4 Sound pressure level measured at 1 meter distance from unit x Q a 2 x Q a 2 2 2 SM KXLDCI 2 A 2 GB Airwell RATING CONDITIONS 3 RATING CONDITIONS Standard conditions in accordance with ISO 5151 and ISO 13253 for ducted units and EN 14511 Cooling Indoor 27 DB 19 WB Outdoor 3
61. w 2 Outdoor unit air outlet is blocked Disasemble plastic drain tube from spout of indoor unit drain pan Open outdoor unit cover clean out water outlet clean the base inside througly Replace thermistor Repair control cable Shut unit off outdoor temp is below design conditions and cannot function properly Remove obstructions SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING 11 1 5 Outdoor Unit Diagnosits N Probem 708 EEZ 2 OCTissoded _ 1 1 0 0o o 1 90 3 CITisdiscomeded 0 0 n 4 ctrisshoted total to 5 HST is disconnected when enabled 10 0 41 0 1 6 HST is shorted whenenabled 0 7 OAT is disconnected when enabled 0 0 1 10 TPMFat _ 2 55 0 WE H 11 IPM Fault 12 Bad CC 13 DC undervoltage 14 DC over voltage CC 15 AC under voltage 1 0 16 17 No Communication 1110 21 22 Compressor Over Heating 23 Compressor Over Current 24 No OFAN Feedback OFAN locked Compressor Lock Bad Communication 11 1 5 1 Outdoor Unit Diagnostics and Corrective Actions No Fault Probable Cause Corrective Action Sensors failures of all Check sensors connec types tions or replace sensors Check all wiring and 2 IPM Fault HW prob jumper settings if OK replace electronics No action unless special Bad EEPROM para
62. wer Circuit Breaker and look for broken or loosed cable lugs or wiring mistake s 11 1 7 2 Checking Power Input If Indoor unit power LED is unlighted power down the system and check the fuse of the Indoor unit If the fuse is OK replace the Indoor unit controller If the fuse has blown replace the fuse and power up again Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit 11 1 7 3 Checking the Outdoor Fan Motor Enter Test Mode where the OFAN speed is high Check the voltage between lead wires according to the normal value as following Between red wire and black wire 310VDC 20V Between orange wire and black wire 15VDC 1V Between yellow wire and black wire 2 6VDC 11 1 7 4 Checking the Compressor The compressor is brushless permanence magnetic DC motor Three coil resistance is same Check the resistance between three poles The normal value should be below 0 5 ohm TBD 11 1 7 5 Checking the Reverse Valve RV Running in heating mode check the voltage between two pins of reverse valve connector normal voltage is 220VAC 11 1 7 6 Checking the electrical expansion valve EEV The EEV has two parts drive part and valve The drive part is a step motor it is ringed on the valve Check the drive voltage 12VDC When Outdoor unit is power on EEV shall run and have click and vibration 11 8 SM KXLDCI 2 A 2 GB Airwell TROUBLESHOOTING 11 1 8 Precaution Advise and Notice I

Service Manual KXL DCI (brand Airwell

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