Haier N Series Service Manual
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Haier N Series Service Manual

Haier N Series Service Manual

Wall mounted type dc inverter free match
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SERVICE MANAUL
Wall Mounted Type
DC Inverter FREE MATCH N-Series
Model No.
2U14CS4ERA
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
Repair the product or products dealt with in this service information by anyone else could result in serious injury or death
2015 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version V1
Date 2015-11-12

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  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2015 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...

  • Page 2: Table Of Contents

    Contents Contents 1. Introduction ....................1 2. Specifications..................6 3. Sensors list ....................7 4. Piping diagrams ..................8 5. Operation range ..................9 6. Printed Circuit Board Connector Wiring Diagram .........10 7. Functions and Control................8. Dimensional drawings................9. Conter of gravity ................... 10. Installations ..................11.

  • Page 3: Introduction

    Introduction 1 Introduction 1.1 Safety Cautions Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.
  • Page 4 Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
  • Page 5 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 6 Introduction Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire. Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not installed properly, water can enter the room and wet the furniture and floor.
  • Page 7 Introduction Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock. Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M ohm or higher.

  • Page 8: Specifications

    Specification 2 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT 9+12 n i l n i l Capacity rated Btu/h 13310 13650 14000 14350 Power Consumption(Rated) 1000 1370 1030 1370 1471 1433 Annual energy consumption ³ 12 single:1.6x10 09 single:1.2x10 TECHNICAL SPECIFICATIONS-UNIT Dimensions...

  • Page 9: Sensors List

    Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type R410a Refrigerant charge Refrigerant Maximum allowable distance 30(double) 20(single) circuit between indoor an outdoor Maximum allowable level difference Refrigerant control Capillary Φ6.35 liquid Piping connections Φ9.52 (external diameter) Φ16 drain Heat insulation type Both liquid and Gas pipes Max.

  • Page 10: Piping Diagrams

    Pinping diagrams 4 Pinping diagrams Domestic air conditioner...

  • Page 11: Operation Range

    Operation range 5 Operation range Domestic air conditioner...

  • Page 12: Printed Circuit Board Connector Wiring Diagram

    Wiring diagram 6. Printed Circuit Board Connector Wiring Diagram Connectors PCB (1) Control PCB Connector for power N and L Connector for ground Connector for CN9,CN8 on the module board CN10 Connector for four way valve coil CN11 CN15 Connector for electric expansion valves CN16 CN17 CN18...
  • Page 13 Wiring diagram PCB (2) Module PCB P (CN1) Connector for CN28,CN25 on the control board N (CN5) LO (CN6) Connector for reactor LI (CN7) AC_L(CN8) Connector for CN10,CN9 on the control board AC_N(CN9) CN2(U) Connector for the compressor CN3(V) CN4(W) CN10 Connector for the DC power 5V and 15V form the control PCB Connector for communicate between the control board and the module...
  • Page 14 Wiring diagram CN36 CN10 CN49 CN11 CN15 CN45 CN16 CN47 CN17 CN18 CN19 CN20 CN21 CN22 CN23 CN24 CN25 CN28 PCB(1) Domestic air conditioner...
  • Page 15 Wiring diagram CN10 CN11 PCB(2) Domestic air conditioner...
  • Page 16 Wiring diagram Domestic air conditioner...

  • Page 17: Functions And Control

    Functions and Control 7 Founction and Control 7.1The control system of outdoor unit 7.1.1 The operation frequency of outdoor unit and its control 7.1.1.1 The operation frequency control of compressor The operation frequency scope of compressor Mode Minimum operation frequency Maximum operation frequency 7.1.1.2 The starting of compressor When the compressor is started for the first time, it must be kept under the conditions of...
  • Page 18 Functions and Control Serial No. Temperature scope Frequency limitation Twh 16 Max_hz1 34HZ 16<Twh 24 Max_hz2 40 HZ 24<Twh 32 Max_hz3 62 HZ 32<Twh 44 Max_hz4 72 HZ > Remarks: the above are not only the maximum frequency limitations of the complete appliance which are affected by the environment, but also the maximum ability limitation of the system.
  • Page 19 Functions and Control 7.1.2.1 The outdoor fan control when refrigerating or dehumidifying After the compressor is started for 5 seconds, the outdoor fan is started at the medium speed at first, after 30 seconds it begins to control the airflow speed according to the temperature conditions of the outdoor environment.
  • Page 20 Functions and Control 7.1.5 Protection function 7.1.5.1 TTC high temperature-preventing protection Once the machine is started, it can run TTC overheating protection of air-blowing, but air-blowing sensor malfunction must alarm after 4 minutes during which the compressor is started (during the course of self-detection, there’s no such limitation) Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms, detection method for each time: continuously sampling for 8 times, then order them and take the...
  • Page 21 Functions and Control N Decreasing at the speed of 1HZ/1 second P Decreasing at the speed of 1Hz/10 seconds Q Continue to keep the last-time instruction cycle R Increasing at the speed of 1Hz/10seconds Remarks: the outdoor unit 7.1.5.3 The control of preventing the overcurrent of the compressor During the starting process of the compressor, if the current of the compressor is greater than 17A for 3 seconds, stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3 times in 20 minutes, stop the compressor and alarm, and confirm the malfunction.
  • Page 22 Functions and Control 11 //ice_temp_3+5 ce_temp_3+3 Increasing slowly 8 //ice_temp_3+2 Keeping the frequency ice_temp_3 ice_temp_2 Decreasing slowly ice_temp_1 Decreasing rapidly ice_temp_1 Stop When Tpg_indoor ice_temp_1 , the frequency of the compressor decreases at the speed of 1HZ/1second. When Tpg_indoor ice_temp_2 , the frequency of the compressor decreases at the speed of 1HZ/10seconds.
  • Page 23 Functions and Control light should be off for 5 seconds. b) For the units’ malfunctions Annex 1 If there’s malfunction with the units, this will not affect the run of the complete appliance, but this can be displayed by the malfunction light, the light flashing frequency is 0.5HZ, the number of times is according to the malfunction table of the indoor units.
  • Page 24 Functions and Control 138.1285 124.3392 111.8256 -1.89 1.71 130.2371 117.4366 105.7989 -1.87 1.70 122.8484 110.9627 100.1367 -1.85 1.69 115.9272 104.8882 94.8149 -1.83 1.67 109.4410 99.1858 89.8106 -1.81 1.66 103.3598 93.8305 85.1031 -1.80 1.64 97.6556 88.7989 80.6728 -1.78 1.63 92.3028 84.0695 76.5017 -1.76 1.62...
  • Page 25 Functions and Control 14.5748 14.0079 13.4510 -0.93 0.92 13.9436 13.4185 12.9017 -0.91 0.90 13.3431 12.8572 12.3778 -0.88 0.87 12.7718 12.3223 11.8780 -0.86 0.85 12.2280 11.8126 11.4011 -0.83 0.83 11.7102 11.3267 10.9459 -0.81 0.80 11.2172 10.8634 10.5114 -0.78 0.78 10.7475 10.4216 10.0964 -0.75 0.75...
  • Page 26 Functions and Control 2.8000 2.6112 2.4328 -2.17 2.05 2.7099 2.5246 2.3498 -2.22 2.09 2.6232 2.4413 2.2700 -2.26 2.13 2.5396 2.3611 2.1932 -2.31 2.17 2.4591 2.2840 2.1195 -2.36 2.21 2.3815 2.2098 2.0486 -2.40 2.25 2.3068 2.1383 1.9803 -2.45 2.29 2.2347 2.0695 1.9147 -2.49 2.34...
  • Page 27 Functions and Control 0.7641 0.6845 0.6127 -4.40 3.97 0.7441 0.6661 0.5957 -4.46 4.02 0.7247 0.6482 0.5792 -4.51 4.07 0.7059 0.6308 0.5632 -4.57 4.12 0.6877 0.6140 0.5478 -4.63 4.16 0.6700 0.5977 0.5328 -4.69 4.21 0.6528 0.5820 0.5183 -4.74 4.26 0.6361 0.5667 0.5043 -4.80 4.31...
  • Page 28 Functions and Control 3276.5302 2818.6731 2422.6139 -2.64 2.28 3085.2854 2658.8058 2289.2164 -2.63 2.28 2906.2851 2508.9126 2163.9230 -2.61 2.27 2738.6777 2368.3158 2046.1961 -2.60 2.26 2581.6752 2236.3876 1935.5371 -2.58 2.25 2434.5487 2112.5459 1831.4826 -2.56 2.24 2296.6230 1996.2509 1733.6024 -2.55 2.23 2167.2730 1887.0018 1641.4966 -2.53 2.22...
  • Page 29 Functions and Control 315.5682 290.6199 267.4031 -1.84 1.71 301.1254 277.6976 255.8620 -1.82 1.70 287.4128 265.4119 244.8745 -1.80 1.68 274.3905 253.7288 234.4118 -1.78 1.66 262.0206 242.6161 224.4465 -1.76 1.64 250.2676 232.0436 214.9529 -1.74 1.63 239.0983 221.9825 205.9065 -1.71 1.61 228.4809 212.4060 197.2844 -1.69 1.59...
  • Page 30 Functions and Control 49.7063 48.2057 46.7083 -0.85 0.85 47.9835 46.4842 44.9911 -0.89 0.89 46.3286 44.8323 43.3452 -0.93 0.92 44.7385 43.2468 41.7672 -0.96 0.95 43.2105 41.7248 40.2540 -1.00 0.99 41.7386 40.2604 38.7996 -1.03 1.02 40.3241 38.8545 37.4048 -1.07 1.06 38.9643 37.5045 36.0668 -1.11 1.09...
  • Page 31 Functions and Control 12.2270 11.3545 10.5348 -2.63 2.47 11.8817 11.0240 10.2191 -2.68 2.51 11.5475 10.7046 9.9142 -2.72 2.55 11.2242 10.3957 9.6197 -2.77 2.59 10.9112 10.0970 9.3352 -2.81 2.63 10.6084 9.8082 9.0602 -2.86 2.67 10.3151 9.5288 8.7945 -2.91 2.71 10.0312 9.2586 8.5378 -2.95 2.75...

  • Page 32: Dimensional Drawings

    Dimensinal drawings 8.Dimensional drawings unit: mm 9.Center of gravity unit: mm Outdoor unit Domestic air conditioner...

  • Page 33: Installations

    Installations 10.Installations IMPORTANT INFORMATION REGA- EUROPEAN REGULATIONS RDING THE REFRIGERANT USED CONFORMITY FOR THE MODELS Contains fluorinated greenhouse gases covered by the Kyoto Protocol All the products are in conformity with the following R410A European provision: - Low Voltage Directive 73/23/EEC - Low Voltage Directive 2006/95/EC -Electomagnetic CompatibilitY 89/336/EEC -Electomagnetic CompatibilitY 2004/108/EC...
  • Page 34 Installations Indoor/Outdoor Unit Installation Drawings The models adopt HFC free refrigerant R410A. For installation of the indoor units,refer to the installation manual which was provided with the units. (The diagram shows a wall-mounted indoor unit.) Attention must be paid to the rising up of drain hose more than 15 cm Optional parts for piping...
  • Page 35 Installations WARNING CAUTION Domestic air conditioner...
  • Page 36 Installations Domestic air conditioner...
  • Page 37 Installations Domestic air conditioner...
  • Page 38 Installations Domestic air conditioner...
  • Page 39 Installations Domestic air conditioner...
  • Page 40 Installations Domestic air conditioner...
  • Page 41 Installations Domestic air conditioner...
  • Page 42 Installations Air outlet Wind direction Cushion rubber 4.Installation dimension(Unit:mm) Model 106.5 113.5 319.5...
  • Page 43 Installations 14K 18K Connection of pipes To bend a pipe, give the roundness as large as possible not to crush the pipe , and the bending radius should be 30 to 40 mm or longer. Connecting the pipe of gas side first makes working easier. The connection pipe is specialized for R410A.
  • Page 44 Installations Air outlet Wind direction Cushion rubber 4.Installation dimension(Unit:mm) Model 106.5 113.5 319.5 Domestic air conditioner...
  • Page 45 Installations 2-way valve 2-way valve 3-way valve 3-way valve 2-way valve 2-way valve 3-way valve 3-way valve Each indoor unit musts to be vacuumed , according to the above steps. If the refrigerant of the air conditioner leaks, it is necessary to discharge all the refrigerant. Vacuumize first, then charge the liquid refrigerant into air conditioner according to the amount marked on the name plate.
  • Page 46 Installations 14K 18K T 25A/250V. The type of connecting wire is H07RN-F. Outdoor unit A Outdoor unit A To Indoor unit A To Indoor unit A Model 14K 18K Outdoor unit B Outdoor unit B DOUBLE Connecting wiring 4G0.75mm To Indoor unit B To Indoor unit B DOUBLE Power cable...
  • Page 47 Installations Outdoor Unit When the The wiring of compressor is wrong or Suction temperature sensor failure the connection is poor Check if there is leakage in the unit. Lack of refrigerant Domestic air conditioner...

  • Page 48: Service Diagnosis

    Service diagnosis 11 Service Diagnosis 11.1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
  • Page 49 Service diagnosis 11.3 Problem Symptoms and Measures Symptom Check Item Details of Measure Check the power supply. Check to make sure that the rated voltage is supplied. None of the units operates Check the indoor PCB Check to make sure that the indoor PCB is broken Operation A power failure of 2 to 10 cycles can stop air conditioner Check the power supply.
  • Page 50 Service diagnosis 11.4 Error Codes and Description indoor display Code indication Indoor Reference Outdoor fault description displaying Page (LED1 flash panel code times) indication Indoor Communication fault between indoor and Page 58. Outdoor outdoor units Room temperature sensor failure Page 49. Indoor Malfunction Heat-exchange sensor failure Page 49.
  • Page 51 Service diagnosis . .1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Outdoor display LED1 flash 10 times Defrost temperature sensor failure LED1 flash 11 times Suction temperature sensor failure LED1 flash 12 times Ambient temperature sensor failure LED1 flash 13 times Discharge temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 52 Service diagnosis . .2 EEPROM abnormal Indoor Display E4: Indoor EEPROM error Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of The Data detected by the EEPROM are used to determine MCU malfunction detection Malfunction detection When the data of EEPROM is error or the EEPROM is damaged conditions ■...
  • Page 53 Service diagnosis . .3 Indoor DC fan motor fault Indoor display DC fan motor is detected by checking the fan running condition and so on Method of malfunction detection when the data of EEPROM is error or the EEPROM is damaged Malfunction detection conditions Conditions...
  • Page 54 Service diagnosis . .4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times DC fan motor is detected by checking the fan running condition and so on Method of malfunction detection when the data of EEPROM is error or the EEPROM is damaged Malfunction detection conditions Conditions...
  • Page 55 Service diagnosis . .5 IPM protection Outdoor display: LED1 flash 2 times IPM protection is detected by checking the compressor running condition and so on Method of malfunction detection ■ The system leads to IPM protection due to over current ■...
  • Page 56 Service diagnosis . .6 Over-current of the compressor Outdoor Display: LED1 flash 3 or 24 or 25 times The current of the compressor is too high Method of malfunction detection when the IPM Module is damaged or the compressor is damaged. Malfunction detection conditions power supply voltage is too low or too high...
  • Page 57 Service diagnosis . .7 The communication fault between IPM and outdoor PCB Outdoor display: LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB malfunction detection ■ The outdoor PCB broken leads to communication fault Malfunction detection ■...
  • Page 58 Service diagnosis . .8 Power Supply Over or under voltage fault Outdoor display: LED1 flash 6 times The power supply is over voltage abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Method of malfunction detection An voltage signal is fed from the voltage detection circuit to the microcomputer Malfunction detection conditions...
  • Page 59 Service diagnosis . .9 Overheat Protection For Discharge Temperature Outdoor display: LED1 flash 8 times Method of The Discharge temperature control is checked with the temperature being detected malfunction detection by the Discharge pipe thermistor when the compressor discharge temperature is above 110 Malfunction detection conditions ■...
  • Page 60 Service diagnosis . .10 The communication fault between indoor and outdoor Indoor display outdoor display LED1 flash 15 times Communication is detected by checking the indoor PCB and the outdoor PCB. Method of malfunction detection ■ The outdoor PCB broken leads to communication fault. Malfunction detection ■...
  • Page 61 Service diagnosis Check the indoor mainboard. Measure the voltage between Jumpers 3 and 4 of IC1 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter. If the voltage is of a constant value of 0V DCto5V DC If 230VAC is available but 310DC not, the power module is damaged, replace it...
  • Page 62 Service diagnosis . .11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display LED1 flash 18 times LED1 flash 19 times The position of the compressor rotor can not detected normally Method of malfunction detection when the wiring of compressor is wrong or the connection is poor; Malfunction detection or the compressor is damaged conditions...
  • Page 63 Service diagnosis . .12 High work-intense protection Outdoor display LED1 flash 21 times High work-intense control is activated in the heating mode if the temperature Method of being sensed by the heat exchanger thermistor exceeds the limit. malfunction detection Activated when the temperature being sensed by the heat exchanger rises above 65 twices in 30 minutes.

  • Page 64: Performance And Cerves Diagrams

    Performance curves diagram Performance Curves Diagram 12.1 cooling capacity-temp. curves (9+9)performancecurves cooling value-temerature table outdoor tem p.(hum idity 46% ) indoor tem p. D B /W B 18/12 2714 2686 4498 4030 3587 3499 3233 2400 2771 2743 4592 4123 3809 3587 3321...
  • Page 65 Performance curves diagram cooling capacity-temp. curves performance curves (9+12) cooling value-temerature table outdoor temp.(humidity 46%) indoor temp. DB/WB 18/12 2931 2867 2771 2649 3275 3567 3427 3396 3108 3035 3016 2967 2806 3363 3693 3659 3523 3328 21/15 3399 3380 3296 3054 3800...
  • Page 66 Performance curves diagram 12.2 heating capacity-temp.curves (9+9)performancecurves heating capacity and indoor/outdoor temp.table outdoor tem p. indoor tem p.(hum idity 46% ) D B /W B heating capacity and indoor/outdoor temp.curves Domestic air conditioner...
  • Page 67 Performance curves diagram heating capacity-temp.curves ( 9+12)performancecurves heating capacity and indoor/outdoor temp.table outdoor tem p. indoo r tem p.(hum idity 46% ) D B /W B heating capacity and indoor/outdoor temp.curves Domestic air conditioner...
  • Page 68 Performance curves diagram 12.3 Cooling power consumption-temp.curves (9+9)performancecurves power consumption value-temp.table outdoor tem p.(hum idity 46% ) indoor tem p. D B /W B 18/12 1235 1287 1323 1412 1331 18/14 1257 1309 1345 1441 1478 1279 1331 1367 1463 1514 20/15 1309...
  • Page 69 Performance curves diagram Coolingpower consumption-temp.curves ( 9+12)performancecurves power consumption value-temp.table outdoor tem p.(hum idity 46% ) indoor tem p. D B /W B 1494 1594 1502 18/12 1519 1627 1668 18/14 20/15 1544 1652 1710 1001 1569 1668 1743 22/16 1023 1619 1710...
  • Page 70 Performance curves diagram 12.4 heating power consumption-temp.curves (9+9)performancecurves power consumption value-temp.table in d o o r te m p .(h u m id ity 4 6 % ) o u td o o r te m p . D B /W B -1 5 9 4 1 1 0 1 3...
  • Page 71 Performance curves diagram heating power consumption-temp.curves (9+12)performancecurves power consumption value-temp.table o u td o o r te m p . in d o o r te m p .(h u m id ity 4 6 % ) D B /W B -1 5 9 4 1 1 0 1 3...
  • Page 72 Performance curves diagram 12.5 Cooling discharge pressure (9+9)performancecurves cooling discharge pressure.table outdoor tem p. indoor tem p. (hum idity 46% ) D B /W B 2465 2550 2635 3298 3332 3400 3298 3366 3400 3332 3400 3502 3366 3536 3536 2600 2600 2700...
  • Page 73 Performance curves diagram Cooling discharge pressure (9+12)performancecurves cooling discharge pressure.table outdoor tem p. indoor tem p. (hum idity 46% ) D B /W B 2465 2550 2635 3298 3332 3400 3298 3366 3400 3332 3400 3502 3366 3536 3536 2600 2600 2700 C O O LIN G D IS C H A R G E P R E S S U R E...
  • Page 74 Performance curves diagram 12.6 cooling suction pressure curves (9+9)performancecurves cooling suction pressure.table outdoor tem p. indoor tem p. (hum idity 46% ) D B /W B Domestic air conditioner...
  • Page 75 Performance curves diagram cooling suction pressure curves performancecurves cooling suction pressure.table outdoor tem p. indoo r tem p. (hum idity 46% ) D B /W B Domestic air conditioner...
  • Page 76 Performance curves diagram 12.7 heating discharge pressure curves (9+9)performancecurves Heating discharge pressure.table outdoor tem p. indoor tem p. (hum idity 46% ) D B /W B 2941 3069 3165 3005 3101 3197 3053 3133 3229 3101 3165 3261 3165 3197 3293 3062 3154...
  • Page 77 Performance curves diagram heating discharge pressure curves (9+ 12 )performancecurves Heating discharge pressure.table outdoor tem p. indoor tem p. (hum idity 46% ) D B /W B 294 1 306 9 316 5 300 5 310 1 319 7 305 3 313 3 322 9 310 1...
  • Page 78 Performance curves diagram 12.8 heating suction pressure curves (9+9)performancecurves heating discharge pressure.table outdoor tem p. indoor tem p. (hum idity 46% ) D B /W B O utdoor T em p Domestic air conditioner...
  • Page 79 Performance curves diagram heating suction pressure curves (9+12)performancecurves heating discharge pressure.table outdoor tem p. indoo r tem p. (hum idity 46% ) D B /W B O utdoor T em p Domestic air conditioner...

  • Page 80: Sound Level

    Sound level 13 Sound level Sound presure level 230V,50Hz sound power level Measuring location Model Cooling/heating (cooling/heating) Location of microphone cooling heating 1700 3400 6800 1700 3400 6800 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 approximate approximate threshold...

  • Page 81: Circuit Diagrams

    Circuit diagrams 14 Circuit diagrams 14.1 Outdoor unit control board Circuit Diagrams CN10 AC-L OUT AC-N OUT AC-N OUT AC-L OUT CN14 CN13 FUSE1 PTC1 2U/450V T25A 250VAC 400N/PSB400 AC-L 100/1W S14K350 225/275V 225/275V 225/275V 8MH/20A 8MH/20A 103/275V +12V CN16 AC-N 472/250V/275V AC-L...
  • Page 82 Circuit diagrams 14.2 Module board Circuit Diagram 5.2MH/15A D207 FFA30U60DN PS21965-AT C405 C404 C406 AC-L SGH40N60UF 104/275V 474/275V 680U/400V*2 104/275V R215 D25BX60B 0.015/5W 0.015/5W AC-N R214 R225 20K 9 10 11 12 13 14 15 16 17 D206 C023 R222 C413 24V/1W R223...
  • Page 83 Circuit diagrams Sincere Forever Haier Group Edited by : Liu Yujuan Haier Industrial Park, No.1, Haier Road Yang Xiaodong 266101, Qingdao, China_ Signed by : Yang Wenjun Http //www.haier.com Approved by: He shiquan Domestic air conditioner...
  • Page 84 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2015 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 85 Removal Procedure Domestic Air Conditioner...
  • Page 86 Removal Procedure Loosen the top panel screws Lift the top panel Domestic Air Conditioner...
  • Page 87 Removal Procedure Loosen the screws and pull the panel Domestic Air Conditioner...
  • Page 88 Removal Procedure Pull the wind circle Remove the inlet grill Push the hooks first Domestic Air Conditioner...
  • Page 89 Removal Procedure Domestic Air Conditioner...
  • Page 90 Removal Procedure Domestic Air Conditioner...
  • Page 91 Removal Procedure Loosen the fixing screws and remove the motor Domestic Air Conditioner...
  • Page 92 Removal Procedure Domestic Air Conditioner...
  • Page 93 Removal Procedure Loosen the screw and remove the reactor Domestic Air Conditioner...
  • Page 94 Removal Procedure Loosen the marked screws and pull out the backgurd Domestic Air Conditioner...
  • Page 95 Removal Procedure Loosen the marked screws and remove the stop valves Loosen the marked screws and remove the stop valves bracket Domestic Air Conditioner...
  • Page 96 Removal Procedure Remove the compre -ssor and pipe assay Remove the conden -ser Domestic Air Conditioner...

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