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Haier 2U40S2SM1FA, Service Manual, Page: 1 / 73

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SERVICE MANAUL

Wall Mounted Type

DC Inverter FREE MATCH N-Series

2U40S2SM1FA

Model No.

This service information is designed for experienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or

Repair the product or products dealt with in this service information by anyone else could result in serious injury or death

WARNING

Version V1     Date 2019-12- 17

Summary of Contents for 2U40S2SM1FA

Page 1: ...s not contain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or Repair the product or products dealt with in this service information by anyone else could result in serious injury or death WARNING Versio...

Page 2: ...nsors list 8 4 Piping diagrams 9 5 Operation range 10 6 Printed Circuit Board Connector Wiring Diagram 11 7 Functions and Control 8 Dimensional drawings 9 Conter of gravity 10 Service Diagnosis 11 Performance and cerves diagrams 12 Sound level 13 Circuit diagrams 16 65 64 48 32 31 31 ...

Page 3: ... explanation 1 2 U 4 0 S 2 S M F 1 The maximum combination number Type of outdoor unit U normal type Nominal cooling capacity 14000BTU h Platform of outdoor units NEW1 5P Heat pump R32 refrigerant A Apply toT1 220 240V50HZ 1ph The second generation Supermatch Version 1 ...

Page 4: ...t before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharging refriger...

Page 5: ...e welder in an enclosed room can cause oxygen deficiency 1 2 2 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equ...

Page 6: ...ified power cable can cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable can damage the cable Do not mix air or gas other than the specified refrigerant R 410A R22 in the refrigerant system If air enters the cooling system an excessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to loc...

Page 7: ...an electrical shock or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires can cause an electrical shock excessive heat generation or fire Warning Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it can cause an electrical shock excessive heat generation or fire...

Page 8: ...able but may nevertheless be valuable to the reader such as tips and tricks Caution Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning Warning A warning is used when there is danger of personal injury Reference A reference guides the reader to other plac...

Page 9: ...CAL SPECIFICATIONS g n i t a e h g n i l o o c A t n e r r u c g n i n n u r l a n i m o N Maximum running current A A t n e r r u c g n i t r a t S TECHNICAL SPECIFICATIONS PARTS g n i t a e h g n i l o o c Compressor r o s s e r p m o C y r a t o R e p y T l e d o M W t u p t u o r o t o M Oil type RM LP56EG or equivalent 460 20 ml L e m u l o v e g r a h c l i O Fan n a f l a i x A e p y T 0 4 ...

Page 10: ... in the table below h t g n e l g n i p i P g n i t a e h g n i l o o c Indoor 27 DB 19 WB Outdoor 35 DB 24 WB Indoor 20 DB Outdoor 7 DB 6 WB 5m 3 Sensors list type Description Qty i t c e t e d r o f d e s u s t I r o s n e s t n e i b m A e d i s r o o d t u o f o e r u t a r e p m e t g n Suction sensor Its used for detecting suction pipe temperature of compressor to adjust gas flowing 1 Defros...

Page 11: ...Pinping diagrams Domes t ic air condit ioner 4 Pinping diagrams 9 ...

Page 12: ...Operation range Domestic air conditioner 5 Operation range 10 10 0 21 27 35 20 40 60 43 20 40 ...

Page 13: ...ector for four way valve coil 7 CN17 8 CN16 Connector for thermistors 9 CN18 10 CN20 11 CN31 12 CN25 13 CN21 14 CN22 Connector for electric expansion valves Connector for fan motor Connector for DC POWER 15Vand 5V to the module board 15 CN23 Connector for communicate between the control board and the module board 16 CN24 17 CN26 Connector to N and P of the module board 18 CN5 Connector for communi...

Page 14: ... e n n o c B C P s e i r e s 1 P CN8 2 N CN9 3 LO CN4 Connector for reactor 4 LI CN3 7 CN5 U 8 CN6 V 9 CN7 W 10 CN10 Connector for the DC power 5V and 15V form the control PCB 11 CN11 Connector for communicate between the control board and the module board Connector for CN26 CN24 on the control board 5 AC_L CN1 6 AC_N CN2 Connector for CN8 CN9 on the control board Connector for the compressor Wiri...

Page 15: ...wiring diagram Domestic air conditioner PCB 1 13 NOTE J3 OFF STATUS ...

Page 16: ...wiring diagram 14 Domestic air conditioner PCB 2 ...

Page 17: ...ROWN Y G YELLOW GREEN 1 Don t touch capacitor even after plug off danger of electric shock 2 The capacitor retains high voltage even after the plug off 3 For your safety be sure to wait at least 5 minutes The dotted parst are optional DC Fan motor A B Pipe temp sensor CG B XG B CG A XG A Sution temp sensor Ambient temp s Defrost temp s Comp temp s M A B Electronic expansion valve M Bottom heater 4...

Page 18: ...n should be prior to the calculated frequency 7 1 1 3 The speeds of increasing or decreasing the frequency of the compressor The speed of increasing or decreasing the frequency rapidly 1 1HZ second The speed of increasing or decreasing the frequency slowly 2 1HZ 10seconds 7 1 1 4 The calculation of the compressor s frequency 1 The minimum maximum frequency limitation A While refrigerating is the m...

Page 19: ...uency P 80 90 95 100 110 0 2 3 4 4 The percentage of the rated frequency P 80 90 98 105 115 The indoor set airflow speed Breeze Low Medium High Strong Quiet Healthy airflow Ki 60 70 85 100 108 60 60 Functions and control Domestic air conditioner 17 6 Wh_c 48 Max_hz4 71 HZ 7 Wh_c 48 Max_hz5 60 HZ 1 85 1 85 F reference frequency Fi reference frequency Note valid internal machine starting and running...

Page 20: ... during which the compressor is started during the course of self detection there s no such limitation TTC TTC 116 lasts for 20 seconds Overheating protection of air blowing alarm malfunction to the indoor others don t last TC high temperature preventing control of the indoor heating unit Tpg_indoor is the highest value of the effective indoor unit start it and it is in accord with the running sta...

Page 21: ...ng process of the compressor if the AC current is greater than 14A the frequency of the compressor decreases at the speed of 1HZ second During the starting process of the compressor if the AC current is greater than 13A the frequency of the compressor decreases at the speed of 0 1HZ second During the starting process of the compressor if the AC current is greater than 12A the frequency of the comp...

Page 22: ...ice_temp_3 3 the frequency of the compressor increases at the speed of 1HZ 10seconds For example Tpg_indoor 0 last for 2 minutes and then the outdoor unit will stop and report underload malfunction but don t send malfunction report to the indoor The compressor stops for more than 3 minutes Tpg_indoor ice_temp_3 2 the compressor recovers Temperature protection of the outdoor refrigerating coil When...

Page 23: ...6 700 when heaating compressor frequency Hz Twh 10 10 16 Functions and control In 3 minutes After 3 minutes The wind speed control is related to the frequency of the compressor and the temperature conditions of the outdoor environment After the compressor is started for 5 seconds the outdoor fan is started according to the temperature conditions of the outdoor environment In 3 minutes Twh Twh 10 1...

Page 24: ...dard opening size and then the compressor can be started When refrigeration is in vain the machine is shut down or is in the state of retrograde operation the opening size of the expansion valve of the indoor unit is 5 steps When heating is in vain the opening size of the expansion valve of the indoor unit is 80 steps Domestic air conditioner 22 Functions and control ...

Page 25: ... 3028 84 0695 76 5017 1 76 1 62 19 87 2775 79 6222 72 5729 1 74 1 60 18 82 5577 75 4384 68 8710 1 72 1 59 17 78 1230 71 5010 65 3815 1 70 1 57 16 73 9543 67 7939 62 0907 1 68 1 55 15 70 0342 64 3023 58 9863 1 66 1 54 14 66 3463 61 0123 56 0565 1 64 1 52 13 62 8755 57 9110 53 2905 1 62 1 51 12 59 6076 54 9866 50 6781 1 60 1 49 11 56 5296 52 2278 48 2099 1 58 1 47 10 53 6294 49 6244 45 8771 1 56 1 4...

Page 26: ...4 17 14 5748 14 0079 13 4510 0 93 0 92 18 13 9436 13 4185 12 9017 0 91 0 90 19 13 3431 12 8572 12 3778 0 88 0 87 20 12 7718 12 3223 11 8780 0 86 0 85 21 12 2280 11 8126 11 4011 0 83 0 83 22 11 7102 11 3267 10 9459 0 81 0 80 23 11 2172 10 8634 10 5114 0 78 0 78 24 10 7475 10 4216 10 0964 0 75 0 75 25 10 3000 10 0000 9 7000 0 75 0 75 26 9 8975 9 5974 9 2980 0 76 0 76 27 9 5129 9 2132 8 9148 0 80 0 8...

Page 27: ... 2 5246 2 3498 2 22 2 09 63 2 6232 2 4413 2 2700 2 26 2 13 64 2 5396 2 3611 2 1932 2 31 2 17 65 2 4591 2 2840 2 1195 2 36 2 21 66 2 3815 2 2098 2 0486 2 40 2 25 67 2 3068 2 1383 1 9803 2 45 2 29 68 2 2347 2 0695 1 9147 2 49 2 34 69 2 1652 2 0032 1 8516 2 54 2 38 70 2 0983 1 9393 1 7908 2 59 2 42 71 2 0337 1 8778 1 7324 2 63 2 46 72 1 9714 1 8186 1 6761 2 68 2 50 73 1 9113 1 7614 1 6219 2 73 2 54 7...

Page 28: ... 107 0 7247 0 6482 0 5792 4 51 4 07 108 0 7059 0 6308 0 5632 4 57 4 12 109 0 6877 0 6140 0 5478 4 63 4 16 110 0 6700 0 5977 0 5328 4 69 4 21 111 0 6528 0 5820 0 5183 4 74 4 26 112 0 6361 0 5667 0 5043 4 80 4 31 113 0 6200 0 5518 0 4907 4 86 4 36 114 0 6043 0 5374 0 4775 4 92 4 41 115 0 5891 0 5235 0 4648 4 98 4 45 116 0 5743 0 5100 0 4524 5 04 4 50 117 0 5600 0 4968 0 4404 5 10 4 55 118 0 5460 0 4...

Page 29: ...368 3158 2046 1961 2 60 2 26 3 2581 6752 2236 3876 1935 5371 2 58 2 25 2 2434 5487 2112 5459 1831 4826 2 56 2 24 1 2296 6230 1996 2509 1733 6024 2 55 2 23 0 2167 2730 1887 0018 1641 4966 2 53 2 22 1 2045 9191 1784 3336 1554 7931 2 52 2 21 2 1932 0242 1687 8144 1473 1460 2 50 2 20 3 1825 0899 1597 0431 1396 2333 2 48 2 19 4 1724 6540 1511 6468 1323 7551 2 47 2 17 5 1630 2870 1431 2787 1255 4324 2 4...

Page 30: ...61 224 4465 1 76 1 64 42 250 2676 232 0436 214 9529 1 74 1 63 43 239 0983 221 9825 205 9065 1 71 1 61 44 228 4809 212 4060 197 2844 1 69 1 59 45 218 3860 203 2887 189 0648 1 67 1 57 46 208 7855 194 6066 181 2273 1 65 1 55 47 199 6531 186 3369 173 7524 1 63 1 54 48 190 9639 178 4584 166 6217 1 60 1 52 49 182 6945 170 9508 159 8181 1 58 1 50 50 174 8228 163 7951 153 3249 1 56 1 48 51 167 3280 156 97...

Page 31: ...7996 1 03 1 02 87 40 3241 38 8545 37 4048 1 07 1 06 88 38 9643 37 5045 36 0668 1 11 1 09 89 37 6569 36 2078 34 7831 1 14 1 13 90 36 3996 34 9622 33 5513 1 18 1 16 91 35 1903 33 7653 32 3689 1 22 1 19 92 34 0269 32 6151 31 2338 1 26 1 23 93 32 9075 31 5096 30 1438 1 30 1 27 94 31 8302 30 4467 29 0970 1 33 1 30 95 30 7933 29 4246 28 0915 1 37 1 34 96 29 7950 28 4417 27 1254 1 41 1 37 97 28 8337 27 4...

Page 32: ...1 2003 2 54 2 39 124 12 5840 11 6965 10 8617 2 58 2 43 125 12 2270 11 3545 10 5348 2 63 2 47 126 11 8817 11 0240 10 2191 2 68 2 51 127 11 5475 10 7046 9 9142 2 72 2 55 128 11 2242 10 3957 9 6197 2 77 2 59 129 10 9112 10 0970 9 3352 2 81 2 63 130 10 6084 9 8082 9 0602 2 86 2 67 131 10 3151 9 5288 8 7945 2 91 2 71 132 10 0312 9 2586 8 5378 2 95 2 75 133 9 7563 8 9971 8 2895 3 00 2 80 134 9 4901 8 74...

Page 33: ...Dimensional drawing 31 Domestic air conditioner 8 Dimensional drawings 9 Center of gravity ...

Page 34: ... outdoor units In either case conduct the diagnostic procedure described in the following pages 10 2 Parameter of primary electronic appliance e r u t c i P r e t e m a r a P e m a N O N 1 Compressor Rated voltage 220 230V Rated current 8 4A Rated frequency 50 60Hz Resistance 0 93 2 Fan motor Rated voltage DC 224 336V Rated current 0 236 0 288A Rated frequency 50 60Hz Rated power 41W 3 Reactor Rat...

Page 35: ...es but does not cool or does not heat only for heat pump Check for faulty operation of the electronic expansion valve Set the units to cooling operation and compare the temperatures of the liquid side connection pipes of the connection section among rooms to check the opening and closing operation of the electronic expansion valves of the individual units Diagnosis by service port pressure and ope...

Page 36: ...EEPROM error Page 32 F1 2 The protection of IPM Page 36 F22 3 Overcurrent protection of AC electricity for the outdoor model Page 37 F3 4 Communication fault between the IPM and outdoor PCB Page 39 F19 6 Power voltage is too high or low Page 40 F4 8 Overheat protection for Discharge temperature Page 41 F21 10 Defrost temperature sensor failure Page 31 F7 11 Suction temperature sensor failure Page ...

Page 37: ...mpressor n o i t a r e p o n o i s i c e D Conditions Note The values vary slightly in some models Supposed Faulty connector connection Causes Faulty thermistor Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Thermistor resistance check method Remove the connector of the thermistor on the PCB and measur...

Page 38: ...e MCU Malfunction Detection Malfunction When the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed Faulty EEPROM data Causes Faulty EEPROM Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor or outdoor mainboard Service diagnosis Domestic air conditioner 36 ...

Page 39: ...t connector or parts damage may be occurred Service diagnosis Domestic air conditioner 37 when the detected rotation feedback signal don t received in 2 minutes Check whether terminals on indoor pcb is well Pull out the terminals on the indoor mainboard and reinsert them Turn off power switch and pull outthe fan motor Measure the resistances between balck line 0V and white line 15V balck line 0V a...

Page 40: ...r due to faulty indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Check whether terminals on indoor pcb is well Electrify the machine again and turn it on in the cooling operation Measure voltage between the positions 1and 3 of Terminal CN9 on the indoor PCB the voltage is about 90 220vac check wheth...

Page 41: ...on and so on Malfunction Detection Malfunction Decision Conditions Supposed DC fan motor protection dues to the DC fan motor faulty Causes DC fan motor protection dues to faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 39 when the detected rotation feedback signal don t received in 2 minutes ...

Page 42: ...ower switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller If malfunctions are reported before or upon the compressor being started up IPM Module is damaged and needs replacing The compressor is started normally but malfunctions are reported after it has run for some time 1 The system may have been o...

Page 43: ...r switch before connect or disconnect connector or parts damage may be occurred Electrify the machine again and turn it on with the remote controller If malfunctions are reported before or upon the compressor being started up IPM Module is damaged and needs replacing Repair the power supply The system may have been over or under charged with gas which can be judged through the pressure of the meas...

Page 44: ...f power switch before connect or disconnect connector or else parts damage may be occurred 1 Check whether Terminal CN22 and CN23 on the outdoor mainboard CN10 and CN11 on IPM module 2 Check whether the connected wire between IPM and outdoor Are they good Electrify the machine again and turn it on Check whether the voltage between 1 and 2 of Terminal CN23 is about DC5V Check whether the voltage be...

Page 45: ...odule is broken the outdoor PCB is broken Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller Check whether the compressor is started normally Is it ok Yes Maybe there is some disturbance NO No 230 is ok Yes Yes This question may be caused by the po...

Page 46: ... with the remote controller then measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit The temperature exceeds 116 shortly after the machine starts up 1 The cryogen may have been leaked during installation or there may be leakage in the piping system 2 There may be other causes to make the exhaust temperature too high Malfunctions occur after running for s...

Page 47: ...utdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault Decision The indoor PCB broken leads to communication fault Conditions Supposed Communication wiring disconnected Causes The indoor PCB is broken The outdoor PCB is broken The Module PCB is broken Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else pa...

Page 48: ...maged replace it with a new one NO Measure the voltage Between 3 and 4 of IC9 on the Outdoor mainboard with a Multimete The voltage is a constant value of 0V DC to 5V DC The outdoor pcb is damaged replace it with a new one YES NO The outdoor pcb is well and then check the cable If the voltage is a constant value of 0V DC to 5V DC Or the voltage between Communication line red and N white line is no...

Page 49: ...o turn off power switch before connect or disconnect connector or parts damage may be occurred Within 3 minutes after the machine is supplied with power and turned on with the remote controller check whether the compressor can start up 1 The wiring of compressor is incorrect or the connection is poor 2 The compressor is damaged At first the compressor start up soon the compressor stopped with the ...

Page 50: ...ent gas Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller check whether the wind temperature is below 65 The malfunction is reported after the machine has run for some time 1 Check room temperature and pipe temperature sensor 2 the temperature mon...

Page 51: ...8 3797 4607 4339 4018 2829 20 15 3253 3220 4314 3883 4714 4446 4125 2907 22 16 3351 3319 4401 4012 4821 4554 4286 2986 25 18 3549 3450 4530 4271 5089 4821 4661 3300 27 19 3647 3516 4616 4401 5250 4982 4768 3379 30 22 3877 3844 4961 4746 5732 5518 5357 3811 32 23 3910 3877 5048 4832 5839 5571 5411 3850 32 24 3976 3943 5134 4918 5946 5679 5518 3929 outdoor tem p hum idity 46 cooling value temerature...

Page 52: ...1 6 0 7 5 6 15 1 5 0 4 0 6 8 4 7 1 0 5 20 0 7 6 3 2 2 5 4 9 6 5 4 25 8 7 7 3 8 7 6 4 3 1 7 4 indoor tem p hum idity 46 heating capacity and indoor outdoor temp table 12 12 performancecurves heating capacity and indoor outdoor temp curves 11 2 heating capacity temp curves Performance curves diagram Domestic air conditioner 50 ...

Page 53: ...1726 1826 701 30 22 543 549 1006 1088 1718 1843 1926 750 32 23 552 539 1017 1121 1743 1876 1951 837 32 24 561 530 1034 1142 1768 1909 1975 899 outdoor tem p hum idity 46 power consumption value temp table 12 12 performancecurves 100 300 500 700 900 1100 1300 1500 1700 1900 2100 p o w e r co n su m p tio n w indoor tem pe DB W B power consum ption temp curves 18 20 25 32 35 40 43 46 11 3 Coolingpow...

Page 54: ... idity 46 power consumption value temp table 12 12 performancecurves conoling capacity w 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 15 5 5 7 6 15 20 25 co o lin g ca p a city w indoor tem pe DB W B heating capacity and indoor outdoor tem p curves 15 20 25 11 4 heating power consumption temp curves Performance curves diagram Domestic air conditioner 52 ...

Page 55: ...3281 3447 3447 45 2154 2154 2237 12 12 performancecurves cooling discharge pressure table indoor tem p 1500 2000 2500 3000 3500 4000 15 25 30 35 40 45 D IS C H A R G E P R E S S U R E Outdoor Tem p COOLING DISCHARGE PRESSURE 16 19 22 11 5 Cooling discharge pressure Performance curves diagram Domestic air conditioner 53 ...

Page 56: ...25 0 8 5 8 6 5 3 6 5 30 0 8 5 4 7 5 3 6 5 35 4 2 8 0 0 8 4 8 7 40 2 3 8 2 3 8 2 9 7 45 0 4 5 0 2 5 0 2 5 performance curves cooling suction pressure table indoor tem p 11 6 cooling suction pressure curves 12 12 Performance curves diagram Domestic air conditioner 54 ...

Page 57: ... 3090 15 2420 2492 2516 20 2317 2362 2384 12 12 performancecurves Heating discharge pressure table indoor tem p 1000 1500 2000 2500 3000 3500 4000 15 10 5 0 5 10 15 20 D IS C H A R G E P R E S S U R E Outdoor Tem p HEATING DISCHARGE PRESSURE 15 20 25 11 7 heating discharge pressure curves Performance curves diagram Domestic air conditioner 55 ...

Page 58: ...2 8 6 1 8 10 1 8 7 0 7 7 7 4 7 15 6 3 6 0 3 6 1 1 6 20 2 0 6 7 9 5 5 8 5 12 12 performancecurves heating discharge pressure table indoor tem p 400 500 600 700 800 900 1000 15 10 5 0 5 10 15 20 S U C T IO N P R E S S U R E Outdoor Tem p 15 20 25 11 8 heating suction pressure curves Performance curves diagram Domestic air conditioner 56 ...

Page 59: ...0 Octave band center frequency Hz approximate threshold hearing for continuous noise 63 125 250 500 1000 2000 4000 8000 20 30 40 50 60 70 80 53 106 212 425 850 1700 3400 6800 NC 70 NC 60 NC 50 NC 40 NC 30 NC 20 Model Sound presure level 230V 50Hz Cooling heating Measuring location sound power level cooling heating H L SL Location of microphone 53 63 AARIA MULTI 250 P 12 Sound level Sound level Dom...

Page 60: ... XG A 1 20 DEBUG TX1 1 18 DEBUG RX1 1 20 DEBUG TX1 FAULT LED C47 0 1uF 5V R111 10K R112 10K P06 1 P03 DA0 2 P04 3 VCL 4 PJ1 MTIOC3A 5 MD FINED 6 XCIN 7 XCOUT 8 RES 9 P37 XTAL 10 VSS 11 P36 EXTAL 12 VCC 13 P35 NMI 14 P34 MTIOC0A IRQ4 15 P32 MTIOC0C TXD6 IRQ2 16 P31 MTIOC4D IRQ1 17 P30 MTIOC4B RXD1 IRQ0 18 P27 MTIOC2B 19 P26 MTIOC2A TXD1 20 P21 MTIOC1B 21 P20 MTIOC1A 22 P17 MTIOC3A MTIOC3B SDA0 IRQ4...

Page 61: ...13 Circuit diagrams 13 1 Outdoor unit control board Circuit Diagrams Circuit diagrams Domestic air conditioner 59 ...

Page 62: ... 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 IC1 R5F562T7DDFK 5V R020 10K R021 10K R010 4 7K R025 10K 5V 5V 1 2 3 JP2 5V R001 10K TR4 MMBT9012 2SA1037AK R027 10K R028 2K R026 2K P N VUFB VP UN VVFB VWFB WP UP VP1 VN1 WN VNC VN FO CIN VNC VNO U V W 2 3 4 5 6 7 8 9 1...

Page 63: ...Domestic air conditioner Sincere Forever ...

Page 64: ...Wall Mounted Type DC Inverter FREE MATCH N Series 2U40S2SM1FA Model No ...

Page 65: ... front panel Outdoor unit s t n i o P e r u d e c o r P p e t S s e r u t a e F 1 1 Loosen the service cover screw and remove the service cover Be careful not to cut your finger by the fins of the heat exchanger ...

Page 66: ...air conditioner Step Procedure Points Step Procedure Points Step Procedure Points 2 Remove the panels 1 Loosen the 7 screws and lift the top panel 2 Loosen the screws of the panel 3 Pull and remove the front panel ...

Page 67: ...3 Domestic air conditioner s t n i o P e r u d e c o r P p e t S Remove the fixting screws then lift the electrical box ...

Page 68: ...air conditioner Remove the air filters and horizontal flap s t n i o P e r u d e c o r P p e t S 1 2 Loosen the fixting screws and remove The back protect net 1 Loosen the fixting screws and remove the side panel ...

Page 69: ...5 Domestic air conditioner Remove the casing s t n i o P e r u d e c o r P p e t S 1 Loosen the fixting screws and remove the side panel 2 Loosen the fixting screws and remove the cross beam ...

Page 70: ...6 Domestic air conditioner s t n i o P e r u d e c o r P p e t S 3 Loosen the fixting screws remove the fan Loosen the fixting screws and lift the fan motor ...

Page 71: ...mestic air conditioner Release stepping motor 2type s t n i o P e r u d e c o r P p e t S 1 Remove the fixing screws then lift the fan motor bracket 2 Cut down the and pull out the compressor and remove the ...

Page 72: ...8 Domestic air conditioner Removal of Heat Exchanger s t n i o P e r u d e c o r P p e t S Loosen the marked fixing screws Loosen the fixting hook ...

Page 73: ...9 Domestic air conditioner s t n i o P e r u d e c o r P p e t S Remove the fixing screw then lift the valve set ...

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