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Service Manual HGD(009-012) V1.0 April

1. 763 Unit mm 4 2 SM HGD 009 012 1 A 1 GB PERFORMANCE DATA AND PRESSURE CURVES Airwell 9 PERFORMANCE DATA 5 1 HGD009 5 1 1 Cooling Capacity kW ID COIL ENTERING AIR DB WB TEMPERATURE OD COIL ENTERING AIR DB TEMPERATURE C 80 110 96 of nominal 80 105 96 of nominal 25 50 96 of nominal 2 68 2 84 3 01 25 1 82 1 86 1 89 0 52 0 53 0 54 2 56 2 72 2 89 1 78 1 81 1 85 10 20 protection range LEGEND TC Total Cooling Capacity kW SC Sensible Capacity kW PI Power Input kW WB WetBulb Temp DB Dry Bulb Temp C ID Indoor OU Outdoor 5 1 2 Capacity Correction Factors Cooling Capacity Ratio Vs Outdoor Temperature 1 2 1 1 Tl Q 74 5 09 2 5 0 8 a 0 7 0 6 0 5 I 20 25 30 35 40 45 Outdoor Temperature deg C SM HGD 009 012 1 A 1 GB 5 1 Airwell PERFORMANCE DATA AND PRESSURE CURVES 5 1 3 15 16 Heating Capacity kW ID COIL ENTERING AIR DB TEMPERATURE C TC 1 83 1 70 1 57 PI 0 42 OD COIL ENTERING AIR DB WB TEMPERATURE DATA 15 20 25 0 46 1 91 0 50
2. 10 12 0 55 2 06 7 8 0 61 1 2 2 14 0 64 2 1 2 19 0 66 7 6 2 87 0 70 0 73 3 20 15 12 0 77 15 24 85 105 of nominal Protection Range 80 120 of nominal LEGEND TH Total Heating Capacity kW Power Input kW WB Wet Bulb Temp C DB Dry Bulb Temp C ID Indoor OU Outdoor 5 1 4 Capacity Correction Factors Heating Capacity Ratio Vs Outdoor Temperature 12 Lace 1 x gt 0 9 5 0 7 0 6 0 5 1 15 10 5 0 5 10 15 Outdoor WB Temperature deg 5 2 SM HGD 009 012 1 A 1 GB PERFORMANCE DATA AND PRESSURE CURVES 5 1 5 Pressure Curves Cooling 1400 Indoor 1300 DB WB 2 1200 22 15 J 3 id 24 17 27 19 a 50 29 21 5 800 2 223 600 500 T T T T T T T 10 15 20 25 30 35 40 45 Outdoor DB Temperature 4 00 4 lt 22 15 24 17 E 27 19 3 29 21 2 32 23 1 00 10 15 20 25 30 35 40 45 Outdoor DB Temperature SM HGD 009 012 1 A 1 GB 5 3 Airwell PERFORMANCE DATA AND PRESSURE CURVES Heating Input Current A Discharge Pressure kPa 3500 3250 4 3000 Indoor DB 2750 2500 15 2250 20 2000 1750 25 1500 1250 1000
3. a in va kaa anta ana ana natns 9 1 10 TUBING CONNECTIONS nn T enne 10 1 11 CONTROL 11 1 12 12 1 13 EXPLODED VIEW amp SPARE 118 242424 01001 13 1 Service Manual HGD 009 012 Revision 01 i INTRODUCTION Airwell 1 1 1 2 INTRODUCTION General HGD series is a monosplit DCI inverter air conditioner designed for residential buildings The ODU YGD009 012 product is a DC inverter outdoor with high technology By using DC compressor sine wave torque control technology this product provides more comfort and economical operating The IDU HGD 009 012 is a high wall mounted type indoor with modern apperance Product is available in two Capcities 9000 and 12000 Btu h Main Features The unit benefits from the most advanced technological innovations namely e DC inverter technology e R410A models e Microprocessor control and indoor LED display e High COP Energy efficiency class A in cooling heating mode e Torque control for compressor running in lower Fregency but with low vibration and little sound e Upto 10 m vertical high between indoor and outdoor units e Cooling operation at outdoor temperature up to 48 C e Heating operation at outdoor temperature down
4. SM HGD 009 012 1 A 1 GB 13 7 APPENDIX APPENDIX SM HDD HED 009 012 1 A 1 GB 13 1
5. 401 30 20 10 1 0 5 5 5 63 125 250 500 1000 2000 4000 8000 Octave Band Center Frequencies Hz Octave Band Center Frequencies Hz 63 125 250 500 1000 2000 4000 8000 Octave Band Center Frequencies Hz HGD012 Heating Noise spectrum amp NC Curves 90 4 80 a 8 5 704 m 5 60 NC65 5 NC60 o 2 50j NC55 3 NC50 N 2 40 NC45 40 2 30 NC35 9 NC30 20 5 NC25 a NC20 1 3 10 NC15 63 125 250 500 1000 2000 4000 8000 FAN SPEED LINE HI O ME LO f 6 2 SM HGD 009 012 1 A 1 GB ELECTRICAL DATA Air well 7 ELECTRICAL DATA MODEL YGD009 YGD012 To indoor 1PH 220 240V 50Hz Circuit Breaker A Power Supply Interconnecting Cable Model No X Cross Section mm NOTE Power wiring cord should comply with local laws and electrical regulations requirements SM HGD 009 012 1 A 1 GB 7 1 WIRING DIAGRAM Airwell 8 WIRING DIAGRAM 8 1 LEGEND BN BROWN WH WHITE BU BLUE YE YELLOW BK BLACK RD RED OG ORANGE YE GN YELLOW GREEN OCT OUTDOOR COIL THERMISTOR OAT OUTDOOR AIR THERMISTOR CTT COMP DISCHARGE THERMISTOR 8 2 HGD009 012 ROOM AIR INDOOR COIL DISPLAY L BN PONER THERMISTOR THERMISTOR 2222 VEJEN oy 0
6. 3 4 KOP Flare Nuts 15 18 4045 6065 70 75 80 85 Ne Valve 1320 1320 1825 18 25 40 50 On N Service Port Cap 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 Copper Tube 7 A J When the outdoor unit is installed above the indoor unit an trap is required every 5m along the suction line at the lowest point of the riser In case the indoor unit is installed above the outdoor no trap is required SM HGD 009 012 1 A 1 GB 10 1 CONTROL SYSTEM hirwell 11 CONTROL SYSTEM 11 1 Electronic Control 11 1 1 Abbreviations Heating Element Human Machine Interface Hz Hertz 1 sec electrical frequency Indoor Unit ODU Outdoor Unit RAT RPS Rounds per second mechanical speed 11 1 2 System Operation Concept The control function is divided between indoor and outdoor unit controllers Outdoor unit is the system Master requesting the indoor unit for cooling heating capacity supply The indoor 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 Target frequency is transferred via indoor to ou
7. 4 00 4 3 50 10 5 0 5 Outdoor WB Temperature 15 3 00 Indoor DB 2 50 15 20 2 00 25 1 50 15 5 0 5 Outdoor WB Temperature 10 15 SM HGD 009 012 1 A 1 GB PERFORMANCE DATA AND PRESSURE CURVES Airwell 5 2 HGD012 5 2 1 Cooling Capacity kW ID COIL ENTERING AIR DB WB TEMPERATURE C OD COIL ENTERING AIR DB TEMPERATURE C 80 110 of nominal 80 105 of nominal 25 50 of nominal 10 20 protection range SC 3 38 3 60 3 83 4 05 4 27 25 2 40 2 45 2 50 2 55 2 60 0 76 0 78 0 79 0 81 0 82 3 22 3 44 3 66 3 88 4 11 2 34 2 39 2 44 2 49 2 54 0 87 0 88 0 90 3 28 3 50 3 72 2 28 2 33 2 38 2 43 2 48 0 96 0 97 0 98 3 12 3 34 3 56 2 22 2 27 2 32 2 37 2 42 1 03 1 04 1 06 1 07 1 09 2 70 2 92 3 14 3 36 3 58 46 5 2 15 2 20 2 25 2 30 2 34 1 14 1 15 1 17 1 18 1 20 LEGEND TH Total Heating Capacity kW Power Input kW WB Wet Bulb Temp C DB Dry Bulb Temp C ID Indoor OU Outdoor 5 2 2 Capacity Correction Factors Cooling Capacity Ratio Vs Outdoor Temperature 1 2 4 1 1 4 0 9 4 0 8 4 0 7 4 0 6 4 0 5 20 25 30 35 40 45 Outdoor Temperature deg Capacity Ration SM HGD 009 012
8. 140 130 120 110 100 o 80 70 60 Resistance Kohm 50 40 30 20 Temperature C 11 16 2 Chart 80 70 60 50 40 30 20 00 90 80 70 60 50 40 30 20 Resistance Kohm 20 15 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 SM HGD 009 012 1 1 GB 11 15 Airwell CONTROL SYSTEM 11 16 3 CTT CTT R T Chart 50 40 30 20 00 90 80 70 60 50 40 30 20 Resistance Kohm 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Temperature C 11 16 SM HGD 009 012 1 A 1 GB TROUBLESHOOTING Airwell 12 TROUBLESHOOTING 12 1 ELECTRICAL amp CONTROL TROUBLESHOOTING 12 1 1 Precautions before Performing Inspection or Repair Be cautious during installation and maintenance Do operation following the regulations to avoid electric shock and casualty or even death due to drop from high attitude Static maintenance is the maintenance during de energization of the air conditioner For static maintenance make sure that the unit is de energized and the plug is disconnected Dynamic maintenance is the maintenance during energization of the unit Before dynamic maintenance check the electricity and ensure that there is ground wire on the site Check if there is elect
9. A A A A SM HGD 009 012 1 A 1 GB 13 5 irwell EXPLODED VIEW amp SPARE PART LIST 13 6 Exploded view of outdoor unit YGD012 ITT 4 n ef A IRA y R o Y 47 NE SE Y 7 7 52522 22 255 ul S oe n gt ANI II III nem SANA 7 7 7 7 7 7 0 A V AAN o B2 je o Rola le pa e a LORS 13 6 SM HGD 009 012 1 A 1 GB EXPLODED VIEW amp SPARE PART LIST Airwell 13 7 Spare part list of outdoor Unit YGD012 015330124 FrontPanel a 2 01233034 _ Clapboard Sub Assy a 3 06123401 Drainage Connecter 1 4 ____ 0120391901 Chassis Sub assy 7 O 1 5 7 390003106 _ Temperature Sensor CT 1 6 7 00103215 CompresorandFitinpg At 8 01713041 VaveSupprtt a 9 ____ 0130200404 RightSidePlateAssy 07100006 11 07133089 CutofVave 1 1 12 0306359 CapillarySub assy CT 14 26233433 BigHande 15 4300040047 MagnetCol 1 1 16 01403908695 ElectricBoxAssy CT 1 17 0260309601 Electicboxcoversubassy 1 04304 00 1 22 01163124 Condenser Assy 1 23 012543 Top Cover Plate a 24 017080501 Motor Support Sub Assy 43130185 26 01403616 ReactorASSY 1 29 ___ 10333427 AxialFlowFan
10. W19 YE GN eil yi Rn pas AR A smi ti rbd iso gui bons Qr ni cum sum uns qun uj vemi imei iam Gummi jum u 4 x I DAT CIT pum Wo BU H RTL ere RT3 amp dl P W3YE GN RD YE GN E 2 NB S OVC COMP CN2 lt E u ye BU gt COMU SN AN LX 2 LX 1 y y mio 11 0G WH 13 13 ut _1 8 2 SM HGD 009 012 1 1 GB REFRIGERATION DIAGRAM 9 REFRIGERATION DIAGRAMS 9 1 HGD009 YGD009 INDOOR UNIT Gas side Indoor Coll 9 2 HGD012 YGD012 INDOOR UNIT Liguid side Indoor Coil 1 I OUTDOOR UNIT 3 way valve Outdoor Coil Strainer H COOLING lt HEATING OUTDOOR UNIT 3 way valve gt I Outdoor Coll Check Valve 2 way valve Strainer Maln Caplllary Aux Capillary Stralner 2 5x1 37x500mm 2 5 1 37 450 4 COOLING HEATING SM HGD 009 012 1 A 1 GB 9 1 TUBING CONNECTIONS Airwell 10 TUBING CONNECTIONS Suction line Tube bending B Liquid line Flare nut D Pipe insulation E Insulating sleeve Indoor E 8 1 B 4 y E G E P g 1 4 3 4 54
11. oor Unit Diagnostics If there is malfunction error code will be shown from IDU display and the outdoor LEDs blinking can also show the faults from ODU Remark means LED Blink gt x 1 means blink once and the LED blink 0 5 second 0 5 second off between two error cycles it will be 2 seconds off interval means LED OFF Outdoor indicators LED 1 xx IDU Status Failure Possible Reasons Compressor operates operates a EITEE Compressor Protection Compressor protection i0 ext EPROMerror DCover voltage ar EB protection over current protection e Poor air return in indoor unit Fan speed is abnormal e Evaporator is dirty Abnormal power input voltage Compressor wiring mistake Liquid and gas valve are not open EEV damaged or not proper working e Poor heat exchange Over charged system Supply voltage is unstable e Supply voltage is too low and load is too high System is abnormal check if the evaporator and condenser is dirty and blocked EEV connection problem or damage e Refrigerant leakage Poor heat exchange e Connection of compressor OLP is loosen the resistance for this terminal should be less than 10hm EEV connection problem or damaged Capillary problem e Refrigerant leakage e Too high ambient temperature Poor heat exchange includin
12. w ye a BU 13 H 1 N FN A ES EAS N W2BK ROOM UBE DISP1 DISP2 COM OUT 1 W3B 7 lt gt M 44 R ac L L___ COMP 2 Tae 4 YE GN E GN JUMP WS A EVAPORATOR ELECTRIC BOX Opr BN BN r AIR L gt sop VENTILATING AIR N l DEVICE PGF PG SWING UDI SWING UDe Na Im Y HEALTH L HEALTH N Y y RD lu 5 CIL PLASA Y AS au SWING MUTOR UDD SWING MOTORCU DO gt j YEZGN FAN MOTOR O pe SM HGD 009 012 1 A 1 GB Airwell WIRING DIAGRAMS 8 3 8 4 YGD009 2 wei AC L3 EN hap BU i W8 PE igl E G YEGN PE APL H L en 3h ac FF BK F We BK 14 pz ep WIBULI nies OL N YE GN SEE AC L1 EIS Z pce PE ELECTRIC MIDISOLATION SHEET PEO PEO ji 2 W20 YE GN
13. 1 A 1 GB Airwell PERFORMANCE DATA AND PRESSURE CURVES 5 2 3 Heating Capacity kW ID COIL ENTERING AIR DB TEMPERATURE C OD COIL ENTERING AIR DB WB TEMPERATURE C 15 16 10 12 7 8 1 2 2 1 7 6 10 9 15 12 15 24 85 105 of nominal Protection Range 80 120 of nominal LEGEND TH Total Heating Capacity kW Power Input kW WB Wet Bulb Temp C DB Dry Bulb Temp C ID Indoor OU Outdoor 5 2 4 Capacity Correction Factors Heating Capacity Ratio Vs Outdoor Temperature Capacity Ration 15 10 5 0 5 10 15 Outdoor WB Temperature deg C 5 6 SM HGD 009 012 1 A 1 GB PERFORMANCE DATA AND PRESSURE CURVES 5 2 5 Pressure Curves Cooling 1400 1300 Indoor DB WB 1200 1100 1000 4 900 800 700 Suction Pressure kPa 600 4 22 15 24 17 27 19 29 21 32 23 500 6 00 5 50 20 25 30 35 Outdoor DB Temperature 40 5 00 45 4 50 4 00 3 50 3 00 Input Current A 2 50 2 00 10 15 20 25 30 35 Outdoor DB Temperature 40 45 22 15 24 17 27 19 29 21 32 23 SM HGD 009 012 1 A 1 GB PERFORMANCE DATA AND PRESSURE CURVES Heating Input Curr
14. C OCTs 6 C 5 C lt OATS 2 C OCTs 8 C OAT lt 5 C OCTSOAT 3 C 11 12 6 2 Deicing Protection Procedure Af Nf OHz 60sec 50 6005 505 ON Compressor OFF ON Four way valve Cue eee OFF ON Fan A PA ET OFF 450pps 350pps 450pps Electronic expansion valve opening Initial opening 11 12 6 3 Exiting Deicing The deicing operation can exit when any of the conditions below is satisfied 1 OCT 210 C 2 The continuous running time of deicing reaches to maximum deicing time 9K 9min 12K 7 5min 11 127 Communication malfunction Ifthe unit does not receive correct signal from indoor unit for 3min continuously the unit will stop as communication malfunction protection if communication malfunction resume and compressor has stopped for 3min the unit will resume running 11 12 8 IPM module protection When the compressor starts if there is over current or control voltage low for IPM module as some abnormal results IPM will detect module protection signal as the unit is on Once the SM HGD 009 012 1 A 1 GB 11 11 Airwell CONTROL SYSTEM module protective signal is detected stop the unit with module protection immediately If the module protection is resumed and compressor has stopped for 3min the unit will be allowed to operate If the module protection continuously occurs for 6 times it should not be resumed automatically it can resume by pressing O
15. H RM 90 Packaged weight kg Refrigeranttype tandard 1 Additional charge gt 20a m 5m lt L lt 20m 1 4 6 35 Connections 1 2 12 7 between units Operation control tyoe L Remote control 1 Airflow in ducted units at nominal external static pressure 2 Sound power in ducted units is measured at air discharge 3 Sound pressure level measured at 1 meter distance from unit 4 Rating conditions in accordance to ISO 5151 and ISO 13253 for ducted units Power supply x a lt OUTDOOR 2 2 SM HGD 009 012 1 A 1 GB RATING CONDITIONS Airwell 3 RATING CONDITIONS Rating conditions in accordance with ISO 5151 and ISO 13253 for ducted units Cooling Indoor 27 C DB 19 C WB Outdoor 35 C DB Heating Indoor 20 C DB Outdoor 7 C DB 6 C WB 3 1 Operating Limits R410A Indoor Outdoor Upper limit 32 C DB 23 C WB 48 C DB Cooling H ower limit 21 C DB 15 C WB 10 C DB Upper limit 27 DB 24 C DB 18 C WB Heating H ower limit 10 C DB 15 C DB 16 C WB Voltage 1 PH 50Hz 198 264 V SM HGD 009 012 1 A 1 GB 3 1 OUTLINE DIMENSION 4 OUTLINE DIMENSION 4 1 Indoor HGD009 012 4 2 En 320 SM HGD 009 012 1 A 1 GB 4 1 Airwell OUTLINE DIMENSION 4 3 Outdoor YGD012 848
16. Airwell Service Manual HGD 009 012 DCI Series AWSI HGDOO9 N11 AWAU YGD009 H 11 AWSI HGD012 N11 AWAU YGD012 H11 gt z REFRIGERANT R410A HEAT PUMP SM HGD 009 012 1 A 1 GB APRIL 2012 Version 1 LIST 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 OT es April 2012 Total number of pages in this publication is 61 consisting of the following Page Revision Page Revision Page Revision No No No No No No Zero in this column indicates an original page A SM HGD 009 012 1 1 GB Airwell TABLE OF CONTENTS Table of Contents 1 INTRODUC TION eer 1 1 2 PRODUCT DATA 44 11 2 1 3 RATING CONDITIONS aa S u qua X RE HO CUR RO da EE aaa 3 1 4 OUTLINE DIMENSION 4 1 5 PERFORMANCE DATA 5 1 6 SOUND LEVEL CHARACTERISTICS u asa 6 1 7 ELECTRICAL DATA 550 ie e SS 7 1 8 WIRING DIAGRAM 8 1 9 REFRIGERATION
17. B 12 3 Airwell TROUBLESHOOTING 12 1 4 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 please refer to section 11 Control system 12 2 Simple procedures for checking the Main Parts 12 2 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 12 2 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 12 2 3 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 1 764 Ohm at 20C Pay attention U V W are respective to connect to RED YELLOW BLUE wires 12 2 4 Checking the Reverse Valve RV Running in heating mode check the volta
18. N OFF 11 12 9 Compressor overload protection If the compressor OLP is over 115 C the system will stop as protection If the OLP is below 95 and compressor has stopped for 3min the unit will be allowed to operate If the unit stops as compressor overload protection occurred for 6 times continuously it can not resume running automatically and display malfunction it can resume by pressing ON OFF 11 13 Operating the Unit from the ON OFF Button The ON OFF button allows to operate the unit in AUTO mode the microcomputer will monitor the room temperature and select the COOL HEAT FAN mode automatically and temperature Fan speed settings can not be changed 11 14 Indoor Unit Controllers and Indicators The following is schematic drawing for the display HEAT LED COOL LED DRY LED Wu X Y RUN LED x DEICING B IR RECEIVER RUN INDICATOR 1 Lights up when the Air Conditioner is connected to power and the mode is STBY 2 When the unit is turned on remotely the RUN LED goes out while the current setting running mode is displayed DEICING INDICATOR 1 Lights up when the Air Conditioner is under deicing protection 11 12 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM COOL INDICATOR DRY INDICATOR HEAT INDICATOR 2 7 segments display Unit ON OFF Button Lights up during specified operation mode COOL DRY HEAT In normal situation the setting temperature is displayed Shows outdoor temperature or indoor
19. d can t be switched I RAT Visa SEES E S I 1 SPI AS A E S E TI gt 6min gt 3min gt COMP ON OFF ON OFF 305 ON 305 OFF I Anti cold function Max 5min IFAN Set Speed 60s I Set Speed 60s RV ON 11 4 1 Indoor Fan Control in Heat Mode Indoor fan speed depends on the indoor coil temperature Anti cold air function When starting the heating mode anti cold air function will be activated and indoor fan can run at low speed or stop running This function will terminate after the unit runs for 5min or the ICT reaches 40 degree SM HGD 009 012 1 A 1 GB 11 5 Airwell CONTROL SYSTEM Residual heat blowing function During heating when the stopping condition for the compressor is reached the compressor and the outdoor fan motor stop running while the louver moves to P2 The indoor fan will stop after running for 60s at low speed 11 5 Auto Cool Heat Mode In AUTO mode the system selects the running mode COOL HEAT FAN automatically according to the room temperature The display shows the actual running mode and setting temperature There will be 30s delay for mode conversion 1 When RAT226 C the cooling mode is selected 2 When RATS22 C the unit runs in heating mode 3 When 23 C lt lt 25 C upon initial startup the unit will enter auto mode and run in automatic fan mode If the other mode changes int
20. ent A 4000 3750 3500 Indoor DB 3250 3000 15 2750 20 2500 25 2250 2000 1750 Discharge Pressure kPa 1500 7 00 6 50 5 0 5 10 15 Outdoor WB Temperature 6 00 4 Indoor DB 5 50 4 5 00 4 15 20 4 50 25 4 00 3 50 4 3 00 15 10 5 0 5 10 15 Outdoor WB Temperature SM HGD 009 012 1 A 1 GB SOUND LEVEL CHARACTERISTICS Airwell 6 SOUND LEVEL CHARACTERISTICS 6 1 Sound Pressure Level Microphone Figure 1 Wall Mounted Figure 3 Ducted Figure 4 Cassette SM HDD HED 009 012 1 A 1 GB 6 1 Airwell SOUND LEVEL CHARACTERISTICS 6 2 Soud Pressure Level Spectrum Measured as Figure 1 HGD009 Cooling Octave Band Sound Pressure Level dB re 20 mPa Noise spectrum amp NC Curves 90 4 80 70 4 63 125 250 500 1000 2000 4000 8000 Octave Band Center Frequencies Hz HGD009 Heating Octave Band Sound Pressure Level dB re 20 mPa Noise spectrum amp NC Curves FAN SPEED LINE HI TH ME LO HGD012 Cooling Octave Band Sound Pressure Level dB re 20 mPa Noise spectrum amp NC Curves 90 4 80 707 60 1 504
21. g blockage and bad aa eo environment over Heating overload power supply voltage is less than 150VAC Outdoor circuit malfunction AC power REINE is higher than 265V REINE PCB circuit malfunction module assembly problem Poor heat exchange of Heatsink PFC reactor problem Abnormal power voltage circuit problem on over DCover voltage IDU ODU mismatch Check the jumper setting mit frequency Power supply voltage is too low en r current Higher system pressure and overload Lim mit frequency ystem overload mit frequency 119 ETE E OAT failure 2 Jes _ Fa oc aire 71 e eme J Overload or temperature is too high Insufficient refrigerant EEV Problem Too high ambient temperature Poor heat exchange including blockage and bad radiating environment Poor air return in indoor unit Fan speed is abnormal Evaporator is dirty it frequency mpressor overheating Senor was broken or damaged e PCB temperature detection circuit has problem 12 2 SM HGD 009 012 1 A 1 GB TROUBLESHOOTING dS ln temperature e Too sss ambient temperature x 13 Limit frequency Over power Poor heat exchange including blockage and bad s environment nen AAA Normal communication e PCB temperature detection circuit has SM HGD 009 012 1 A 1 G
22. ge between two pins of reverse valve connector normal voltage is 220 240VAC 12 4 SM HGD 009 012 1 A 1 GB EXPLODED VIEW SPARE PART LIST Airwell 13 EXPLODED VIEW amp SPARE PART LIST 13 1 Exploded view of indoor unit HGD009 HGD012 SM HGD 009 012 1 A 1 GB 13 1 Airwell EXPLODED VIEW amp SPARE PART LIST 13 2 Spare part list of indoor Unit HGD009 __ PartDescription _____________ 1 2 305513 Display Board CT 3 24252023 ScrewCover 7 1 4 20012681 FrontCaseSub Assy 71 5 11214 FiltrSubAssy 2 6 10126 GuideLouver2_ 1 7 1054202001 ShaftofGuidelouver 6 8 73705 Crank 9 1521212201 StepMotr 10 26423 LowerClampt 2 17 1054204 AxileBush sub assy 1 18 7651211 Dampingwashersub assy 1 19 24212128 Evaporator Support 1 Ls 21 01382010 _____ Shield board elbow 1 22 Motor Press Pate 23 10352044 CrossFlowFan 71 24 15012874 Motor FN20J PG 714 25 0125127 Wall Mounting Frame Pipe Clamp 27 1521210804 Step Motor 28 10512183 GuideLouver1 29 2012207507 Electric Box Cover 1 30 ____ 01592300 _____ Lower Shield sub assy ofElectricBox 1 31 20112121 ElectricBox CT 32 33010002 CapactorCBB 1 3 3013871 MainBoard 71 34 ____ 4202300102 ___ JumpingConnector 1 35 390000592 TemperatureSens
23. he frequency upper limit from such input current In case of heat pump model this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation Detail Compressor frequency is prohibited going up when AC current 2 7A Compressor will operate at reduced frequency when AC current 2 8A Compressor will stop when AC current 2 9A Compressor frequency is allowed to increase when AC currents6A If the unit stops as such protection for 6 times it can not resume running automatically and display malfunction it can resume by pressing ON OFF 11 12 6 Outdoor Coil Deicing Protection This protection is for Heat Pump Only This protection is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than its setting values when finishing the deicing protection In the deicing protection IFAN is forced OFF 11 10 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM Airwell 11 12 6 1 Deicing Starting Conditions The starting conditions must be made with the outdoor air temperature OAT and outdoor coil temperature OCT Under the conditions that the system is in heating operation duration of successive heating operation is more than 45min or accumulated heating time more than 90 min the unit will enter the deicing mode after 3 min with either of following condition OAT gt 5 C OCTs 2 C 2 C lt OATS5
24. ill be silent speed And in Auto Silent setting fan speed will be adjusted to silent fan speed or F1 according to conditions In AutoFan user setting fan speed will be adjusted automatically according to the difference between actual room temperature RAT and user set point temperature SPT Indoor Fan speed _ ale B j F OE 2 2 F1 RAT SPT 4 2 In DRY mode the automatic fan speed is forced to be low SM HGD 009 012 1 A 1 GB 11 3 Airwell CONTROL SYSTEM 11 1 4 1 Turbo Speed In COOL and HEAT mode not available in AUTO DRY FAN mode press the Turbo button the super high fan speed is selected on Remote control and the indoor fan rotates at super high speed 11 1 5 Outdoor Fan Control 11 1 5 1OFAN Speed The outdoor fan motor is a 2 speed DC motor Unit Model Mode High Low 600 Cooling 900 Heating 90 600 Cooling 900 600 Heating 900 11 1 5 2General rules 1 The outdoor fan is ON when compressor ON during cooling dring and heating mode Outdoor fan OFF will delay 30sec when compressor is OFF during cooling and heating mode In normal operating the OFAN speed depends on actual compressor frequency Outdoor fan control under outdoor deicing please refer to 11 12 6 CO N 11 1 6 Refrigerant control Electrical expansion valve is used in model 09 and capiliary is usued in model 12 11 1 7 Reversing Valve RV Control Reversing valve is on
25. in heat mode Switching of RV state is done only after compressor is off for over 2 minutes 11 2 Fan Mode In this mode the indoor fan may run at high medium low and automatic speed The compressor outdoor fan and 4 way valve will be OFF In this mode the range of setting temperature is 16 30 C 11 3 Cool Mode If RAT2SPT the unit starts cooling operation In this case the compressor and outdoor fan will operate and the indoor fan will run at the setting speed If RATSSPT 2 the compressor will stop operation and the outdoor fan will delay 30 seconds to stop While the indoor fan will run at the setting speed If SPT 2 RAT SPT the unit will maintain the previous status 11 4 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM hirwell SPT SPT 2 COMP OFAN IFAN 11 3 1 Indoor Fan operation under Cool Mode Under cooling mode the fan will operate at each manual setting fan speed In AutoFan user setting fan speed will be adjusted automatically according to the SPT and RAT rerfer to 11 1 4 11 4 Heat Mode If RATsSPT 2 the unit will operate in heating mode compressor outdoor fan and 4 way valve will operate and the indoor fan will delay 3min to start at the latest If SPT 2 lt RAT lt SPT 5 the unit will maintain the previous status If RAT2SPT 5 the compressor will stop the outdoor fan will delay 30s to stop and the indoor fan will blow for 60s at the low speed During this period the fan spee
26. nit low noise or quiet commands come from indoor unit the upper limit frequency must be lowered than the usual setting see 11 1 3 1 11 1 3 1 Frequancy range The compressor frequency limitation is set by the following table Minimum Frequency MinFreq Maximum Frequency MaxFreq Mode 09 12 See following table Cooling 15HZ 26HZ Heating 15HZ 26HZ The maximum allowed frequency is extracted from the following Maximum lt MaxFreq Night Mode 75HZ Cooling Heating 11 2 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM hirwell 11 1 3 2 Frequency Changes Control Frequency change rate is 1 Hz sec 11 1 3 3 Minimum On and Off Time Prohibit to turn ON the compressor for 3 minutes after turning it off except during deicing protection The compressor will not stop within 6 minutes regardless of room temperature changes except during protection 11 1 4 Indoor Fan Control 7 Indoor fan speeds are determined for each operating modes nit Turbo F5 F4 F3 F2 F1 Silent Model 1400 1200 1100 1000 900 800 170 1380 1250 1090 1020 90 900 1400 1250 1150 1050 1400 1180 1100 1040 eso 900 By short pressing FAN button to select each manual fan speed or AutoFan speed By long pressing FAN button to select Silent or Auto Silent Silent or Auto Silent can be swiched by another long pressing No Icon AUTO Auto Silent In Silent setting fan speed w
27. o auto mode the previous running mode will remain 11 6 Dry Mode If RAT gt SPT the unit starts drying operation Indoor fan outdoor fan and compressor will operate and the indoor fan will run at low speed If SPT 2SRATSSPT the unit will keep running in the original mode If RAT lt SPT 2 the compressor will stop running and the outdoor fan will delay 30 seconds to stop While the indoor fan will run at low speed In this mode the Reverse Valve will be OFF and the temperature setting range is 16 30 SPT SPT 2 COMP OFAN IFAN 11 7 Full open degree Max degree P7 _ Full dose degree Initial point 0 degree P2 P1 After power on the upper and lower swing louver will automatically open and then close completely 11 6 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM Airwell If swing function has not been set after unit stating up Under heating mode the upper and lower louver will rotate to position P4 Under other modes the upper and lower louver will rotate to position P7 If swing function has been set after unit stating up Under heating mode the up and down louver can be set to position P2 P3 P4 P5 P6 Under other modes the upper and lower louver can be set to position P7 P6 P5 P4 P3 Auto swing setting Under heating mode the up and down louver will rotate from P2 to P6 Under other modes the upper and lower louver will rotate from P7 to P3 Anti moisture pr
28. ofElectricBox 1 388 12020273802 Electric Box Assy 39 400204055 Connecting Cable 0 0 40 4002046422 Power Bord 41 30510460 Remote Controller 1 _ 11122129 Filter 011 _ aA A fa A A A A A SM HGD 009 012 1 A 1 GB 13 3 EXPLODED VIEW amp SPARE PART LIST Airwell 13 4 Exploded view of outdoor unit YGD009 SM HGD 009 012 1 A 1 GB 13 4 EXPLODED VIEW SPARE PART LIST Airwell 13 5 Spare part list of outdoor Unit YGD009 26233100 1 2 19347 AxialFlowFan 71 3 1501308502 __ Brushless DC Motor j 1 4 0170310401 Motor Support 1 5 01253454 Top Cover Sub Assy 1 6 0147309 RearGrll 71 _ 7 01113546 CondenerAssy 1 9 39000308046 TemperatueSenso a 10 01233385 ClapboardSubAssy 1 11 4300040050 MagntCol 1 _ 03123385 4 wayValveAssy 1 13 ____ 00103224 Compressor and Fittings 14 o130317801 Right Side Plate Sub Assy 1 15 01703089016 _ Valve 1 16 07005 Vale 1 _ 17 26233433 BigHandle 77 71 18 ___ 42011113 Terminal Board 71 _ 22 02603478011 Electric BoxAssy 1 _ 21 0612 01 Drainage Connecter 1 22 012059122 ChassisSubassy 771 23 0133009 FrotPanel 1 _ 4 22413433 FrontGril 1 _
29. oisture removal lh NEL Weight 7 de A EN Es Compressor type model Rotary LANDA QXA A086zC190 Fantype amp quantiy fPropelledirect x 1 Fanspeeds H RPM 90 Sound powerlevel 60 Sound pressure level 3 H dB A 5 Weight k 38 u Additional charge 20g m 5m lt sL lt 15m Connections 3 8 9 53 between units Max tubinglenath m Max 15 Max height difference Max 10 Operation control tyoe Remote control 1 Airflow in ducted units at nominal external static pressure 2 Sound power in ducted units is measured at air discharge 3 Sound pressure level measured at 1 meter distance from unit 4 Rating conditions in accordance to ISO 5151 and ISO 13253 for ducted units INDOOR OUTDOOR SM HGD 009 012 1 A 1 GB 2 1 Airwell PRODUCT DATA SHEET ModellndoorUnitt C C HGDO2 7 Characteristics 1 1 1 Unis Cooling Heating Energy efficiency class A A 1 Power fator o 097 097 Circuit breaker rating A Fantype amp quantiy Crossflowx1 Fan speeds External static pressure Mn Pa mm Refrigerant control Capillay Compressor type mde Rotary PANASONIC 5RS102ZJA21 Fan type amp quantity _ o Propellr drect x Fanspeeds
30. oor unit allow the operating frequency limitation and prevent abnormal high pressure Compressor frequency is prohibited going up when OCT2 55 C Compressor will operate at reduced frequency when OCT2 58 C Compressor will stop when gt 62 C And the indoor fan will run at preset speed SM HGD 009 012 1 A 1 GB 11 9 Airwell CONTROL SYSTEM Compressor will resume its original operation state when OCT lt 53 C AND Comp OFF time23min If the unit stops as such protection for 6 times it can not resume running automatically and display malfunction it can resume by pressing ON OFF 11 12 4 Compressor over Heating Protection The Discharging temperature is used as the compressor s internal temperature If the discharge temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further Compressor frequency is prohibited going up when CTT2 98 C Compressor will operate at reduced frequency when gt 103 C Compressor will stop when gt 110 C And the indoor fan will run at preset speed Compressor will resume its original operation state when lt 90 C AND Comp OFF time23min If the unit stops as such protection for 6 times it can not resume running automatically and display malfunction it can resume by pressing ON OFF 11 12 5 Compressor over Current Protection Detect an input current by the CT during the compressor is running and set t
31. or 7 1 36 390000455 ____ Temperature Sensor 14 37 0159201 Upper Shield Cover sub assy of ElectricBox 1 388 202027301 Electric Box Assy 39 1 400204055 Connecting Cable 0 40 4002046422 PowerCord a 41 30510460 Remote Controler 1 42 11122129 Fie 71 gt 8 A A A A A A 13 2 SM HGD 009 012 1 1 GB EXPLODED VIEW amp SPARE PART LIST Airwell 13 3 Spare part list of indoor unit HGD012 Part Code Part Description __________ FrontPanelAssy e 40512186 Guide Lower C 7 1054202001 ShaftofGuidelouver 8 ____ 73012005 Crak O 9 1521212201 Step Motor SSS O 10512184 12 26112264 LowverClamp2 13 10512185 Arlower2 1 14 22202200 RearCaseassy 71 15 05230014 _ DrainPipe ___ j 1 _ 16 26112262 HelicoidTongue 171 17 10542074 Axile Bush sub assy __ 18 76512011 Damping washer sub assy 1 19 24212128 Evaporator Support 1 Ls 21 01382010 Shieldboard elbow 1 122 26112261 Motor Press late m r 23 1035241 CrossFlowFan j 1 24 150120874 Motor FN20J PG 1 25 01252121 _ Wall Mounting Frame Pipe Clamp Step Motor 35 1 390000592 TemperatureSensor 36 390000455 Temperature Sensor 77741 37 01592301 Upper Shield Cover sub assy
32. otection In Cooling Auto Cooling and dry modes the rotation range of louver will be from P6 to P4 if the silent speed is selected 11 8 Clean function Clean function enables dring the indoor coil after Cool or Dry mode to avoid mould Press CLEAN button in Cool or Dry mode and the be shown remote control Under clean function the indoor fan will continue operation for 10 min at low speed after the unit is turned OFF Clean function is defaulted as OFF after unit is Power ON Clean function is not available in Auto Fan or Heat mode 11 9 Sleep function Pressing SLEEP button will enable the Sleep function will be shown on remote control Sleep function in Cool and Dry mode The SPT will be adjusted according to following chart SPT 3 SPT Sleep function in Heat mode SM HGD 009 012 1 A 1 GB 11 7 Airwell CONTROL SYSTEM The SPT will be adjusted according to following chart SPT Press either Sleep button or ON OFF button can cancel the Sleep function Sleep function will not be available in Auto mode or Fan mode 11 10 I Feel function Feel function maintains the room temperature by comparing the RCT on remote control Pressing IFEEL button will enable the I Feel function mx be shown on remote control Under Feel funtion remote control sends I Feel data every 10 min to IDU controller If the IDU controller does not received I Feel data after 11 min I Feel function will be interr
33. r heat exchanger Compressor will operate at reduced frequency when lt 2 C Compressor will stop when ICT lt 1 C for continuous 3 mins And the indoor fan and louver will remain at the original state Compressor will resume its original operation state when ICT210 C AND Comp OFF time23min If the unit stops as such protection for 6 times it can not resume running automatically and display malfunction it can resume by pressing ON OFF 11 12 22 Indoor Coil over Heating Protection Conditions for Start Controlling Judge the controlling start with the ICT after 2 sec from operation start During heating operation the signals being sent from the indoor unit allow the operating frequency limitation and prevent abnormal high pressure Compressor frequency is prohibited going up when ICT2 53 C Compressor will operate at reduced frequency when ICT2 56 C Compressor will stop when ICT2 60 C And the indoor fan will stop after residual heating blowing function finished Compressor will resume its original operation state when ICTs50 C AND Comp OFF time gt 3min If the unit stops as such protection for 6 times it can not resume running automatically and display malfunction it can resume by pressing ON OFF 11 12 3 Outdoor Coil over Heating Protection Conditions for Start Controlling Judge the controlling start with the OCT after 2 sec from operation start During heating operation the signals being sent from the outd
34. ricity on the housing and connection copper pipe of the air conditioner with voltage tester After ensure insulation place and the safety the maintenance can be performed Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power At time such as when the circuit board is to be replaced place the circuit board assembly in a vertical position Normally diagnose troubles according to the trouble diagnosis procedure as described below Refer to the check points in servicing written on the wiring diagrams attached to the indoor outdoor units Precautions when inspecting the control section of the outdoor unit A large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging voltage DC280V to 380V remains and discharging takes a lot of time After turning off the power source if touching the charging section before discharging an electrical shock may be caused The outdoor unit can not be started up until the unit is de energized for 20min 12 1 2 Confirmation 12 1 2 1 Confirmation of Power Supply Confirm that the power breaker operates ON normally 12 1 2 2 Confirmation of Power Voltage Confirm that power voltage is AC220 240V 10 If power voltage is not in this range the unit may not operate normally SM HGD 009 012 1 A 1 GB 12 1 Airwell TROUBLESHOOTING 12 1 3 Judgment by Indoor Outd
35. tdoor communication and the caculation is based on room temperature and set point temperature 11 1 3 Compressor Frequency Control The Compressor Frequency Control is based on the PI scheme SM HGD 009 012 1 A 1 GB 11 1 Airwell CONTROL SYSTEM When starting the compressor or when conditions are varied due to the change of the room condition the frequency must be initialized according to the AD value of the indoor unit and the Q value of the indoor unit Q value Indoor unit output determined from indoor unit capacity air flow rate and other factors 1 P control Calculate AD value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 2 control If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the AD value Obtaining the fixed AD value When the AD value is small decrease the frequency When the AD value is large increase the frequency 3 Frequency management when other controls are functioning When frequency is drooping Frequency management is carried out only when the frequency droops For limiting lower limit Frequency management is carried out only when the frequency rises 4 Maximum and minimum limits of frequency by PI control The frequency upper and lower limits are set depending on indoor unit When low noise commands come from the indoor unit or when outdoor u
36. temperature when receiving the corresponding demand from controller It resumes displaying setting temperature 5s later Shows the alarm code whenever there is an alarm Refer to Diagonostic part Short pressing Less than 56 Unit will swich between Auto mode and STBY System will select the COOL HEAT FAN mode automatically and temperature Fan speed settings can not be changed Long pressing 5 10s System will enter into Force cooling operating SM HGD 009 012 1 A 1 GB 11 13 Airwell CONTROL SYSTEM 11 15 Test Mode 11 15 1 Entering Test Mode Test mode Mode of testing capacity can be achieved through special remote control settings as following table depends on models Model Mode Settings of Remote control Operation of Remote Display Shown on display control 2 7 segments Cooling Heating 09 12 PO Minimum capacity SPT 16 SPT 27 Press light button 4 Show PO P1 Norminal capacity SPT 18 SPT 29 times in 3 secs Show P1 P2 Maximum capacity SPT 19 SPT 30 Show 2 P3 Medium capacity SPT 17 SPT 28 Show P3 11 15 2 Unit Operation in Test Mode Compressor frequency will be set in the following ways Moda Ee P0 Minimum capaci 1 capaci P2 Maxmum capaci P3 Medium capacity IFAN speed need to set to Turbo before entering test mode 11 14 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM hirwell 11 16 Characteristics of sensor 11 16 1 RAT OAT RAT OAT R T chart
37. to 15 C e Easy installation and service e Sleep mode from remote control to save energy e ON OFF timer and clock display e Vertical auto swing with motorized flap any position stop Intelligent Deicing e Memory from power failure e Rapid cooling heating e Feel function e Cold air prevention in heating e Clean function Blow dry e Multi speeds 7 speeds available for each mode e Self diagnosic Error indications for ease of maintenance SM HGD 009 012 1 A 1 GB 1 1 hirwell INTRODUCTION 1 3 1 4 1 5 e Air sterilization by Cold plasma that generating Active Hydrogen Oxygen and destory Bateria and Viruses Indoor Unit The indoor unit is wall mounted and can be easily fitted to many types of residential locations It includes e LED display e Variable speed with PG motor e Motorized flap e High efficiency filtration to ensure a best Air Quality Advanced filtering combine mechanical Photo catalytic Bi anti bacterial and observe bad gaseous and smokes e Air sterilization by Cold plasma that generating Active Hydrogen Oxygen destory Bateria and Viruses Control The microprocessor indoor controller and an infrared remote control supplied as standard provide complete operating function and programming Remote control RC08A Compact and economically design it offers excellent user comfort Combining modern design with high technology the RC8 remote control offers powerful f
38. unctions of real considering of user comfort and energy saving of air conditioner For detail of functions please refer to Appendix 1 Outdoor Unit The outdoor units can be installed as floor or wall mounted units 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 It includes Compressor mounted in a soundproofed compartment e Axial fan Outdoor coil with hydrophilic louver fins for RC units e Outlet air fan grill e Interconnecting wiring terminal block 1 2 SM HGD 009 012 1 A 1 GB INTRODUCTION Airwell 1 6 Tubing Connections Flare type interconnecting tubing to be produced on site For further details please refer to the Installation Manual 1 7 Inbox Documentation Each unit is supplied with its own installation operation and remote control manuals 1 8 Matching Table INDOOR UNITS AWSI HGD009 N11 AWSI HGD012 N11 OUTDOOR UNITS SM HGD 009 012 1 A 1 GB 1 3 PRODUCT DATA SHEET Airwell 2 PRODUCT DATA SHEET 2 1 HGD009 YDD009 Model Indoor Unit HGDO009 Characteristics Units Cooling 23 ll Energy efficiency class Power supply Rated current 11 A er Fr External static pressure Min Pa 0 M
39. upted and then the AC will work according to RAT on the IDU Feel function can not be remembered after power failure 11 11 8 degree heating mode Under heat mode press Eco button the system will enter into 8 Degree Heat Mode 1 8 Degree Heat Mode can not exist together with Sleep mode If Sleep Mode is selected 8 degree Heat Mode will be canceled 2 The SPT will be 8 degree and display will show the SPT Under this mode IFAN can not be changed manually Including Turbo speed 4 Under this mode IFAN will operate as following table when compressor is ON When compressor stops IFAN will operate as Residual heat blowing function refer to 11 4 1 Indoor Fan speed Low One speed should keep at least 210sec operating before switching to other speeds 11 12 Protections There are 4 protection codes Normal Norm unit operate normally Stop Rise SR compressor frequency can not be raised but does not have to be decreased HzDown Compressor frequency is reduced by 2Hz s Stop Compressor SC Compressor is stopped 11 8 SM HGD 009 012 1 A 1 GB CONTROL SYSTEM hirwell 11 12 1 Indoor Coil Defrost Protection Conditions for Start Controlling Judge the controlling start with the ICT Indoor Coil Temperature after 6min from operation start During cooling operation the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoo

Service Manual HGD(009-012) V1.0 April

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