Download Print this page

Haier 1U18FS2ERA Service Manual

Hide thumbs

Advertisement

Table of Contents

SERVICE MANUAL

Order No.AC1012S001V0

Wall mounted Type

FREE MATCH EK
AS18ZS2ERA
1U18FS2ERA
indoor unit and remote controller
outdoor unit
2012

Advertisement

Table of Contents
loading

  Also See for Haier 1U18FS2ERA

  Related Manuals for Haier 1U18FS2ERA

  Summary of Contents for Haier 1U18FS2ERA

  • Page 1: Service Manual

    SERVICE MANUAL Order No.AC1012S001V0 Wall mounted Type FREE MATCH EK AS18ZS2ERA 1U18FS2ERA indoor unit and remote controller outdoor unit 2012...
  • Page 2: Table Of Contents

    Table of Contents Table of Contents 1. Introduction ……………………………………………………………………..1 2. List of Functions ……………………………………………………..………5 3. Specifications …………………………………………………………………...6 4. Printed Circuit Board ConnectorWiring Diagram ………………………...8 5. Functions and Control ………………..…………..…………….…..…..13 5.1 Main functions and control specifications of indoor unit…….…….………13 5.2 Main functions and control specifications of outdoor unit …………….….21 5.3 Value of Thermistor………………..…....………..……………...……..27 6.
  • 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: Cautions Regarding Products After Repair

    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: Inspection After Repair

    Introduction 1.1.3 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. If the plug has dust or loose connection, it can cause an electrical shock or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 7: List Of Functions

    AS18ZS2ERA Functions Category 1U18FS2ERA Healthy negative ion make your room full of an abundance natural negative ions. Avoid the child's wrong operation on the remote controller Child lock The 3D airflow is able to deliver the airflow horizontally and vertically.
  • Page 8: Specifications

    3. Specifications AS18ZS2ERA 5.65 19300 17700 4859 4472 400~1550~2250 405~1580~2350 6.35 12.7 16.0 15.0 14.2 13.5 12.7 13.0 11.2 0.15 0.15 960X235X310 1036X313X375 11.5 13.5 52/49/45...
  • Page 9 1U18FS2ERA SNB130FGYM2 FV50S R410a 1306.1 1306.1 1670 1550 820X310X682 919X106X715 45.5...
  • Page 10: Printed Circuit Board Connectorwiring Diagram

    Connector Wiring Diagram 4.Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors Connectors PCB(1) (Control PCB) For AS18ZS2ERA 1) CN9 Connector for fan motor 2) CN6 Connector for heat exchanger thermistor and Room temperature thermistor 3) CN5 Connector for UP&DOWN STEP motor 4) CN21 Connector for power N wire 5) CN52 Connector for power L 6) CN27 Connector for power GRN...
  • Page 11 Connector Wiring Diagram PCB(1) CN34 CN14 CN52 CN21 CN27 Domestic Air Conditioner...
  • Page 12 Connector Wiring Diagram 4.2: outdoor unit Connectors PCB(1) (Control PCB) for 1U18FS2ERA 1) CN1,CN2 Connector for power N and L 2) CN3 CN8 Connector for ground 3) CN23 Connector for DC POWER 15Vand 5V to the module board 4) CN9,CN10 Connector for CN9,CN8 on the module board...
  • Page 13 Connector Wiring Diagram CN36 CN10 CN49 CN11 CN11 CN15 CN45 CN16 CN47 CN17 CN18 CN19 CN20 CN21 CN23 CN24 CN25 CN28 Domestic Air Conditioner...
  • Page 14 Connector Wiring Diagram PCB(2) CN10 CN11 Domestic Air Conditioner...
  • Page 15: Functions And Control

    Funcitions and Control 5.Funcitions and Control 5.1 Main functions and control specification of indoor unit 5.1.1 Automatic operation When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode.
  • Page 16: Heating Operation Mode

    Funcitions and Control Funcitions and Control 5.1.3 Demoisture mode. * temperature control range: 16---30 * temperature difference: Control feature: send the demoisture signal to the outdoor system. When Tr>Ts+2 , the compressor will be turned on, the indoor fan will operate at the set speed. When Tr is between the Ts and Ts+2 , the outdoor system will operate at the high demoisture frequency for 10 minutes and then at the low demoisture mode for six minutes.
  • Page 17 Funcitions and Control If Tr<Ts+, the outdoor system will be turned on again, the indoor fan will be at the cold air proof mode. *Indoor fan control manual control: You can choose high, medium, low and automatic speed control. Automatic: When Tr<Ts, high speed. When Ts=<Tr=<Ts+2 , medium speed.
  • Page 18 Funcitions and Control When the system is at the automatic option with the strength/ mute function, if the system enters the cooling mode, the cooling strength/ mute function will be offered; if the system enters the heating mode, then the heating strength/ mute function will be offered; if the system enters the airflow mode, there will be no strength/ mute function.
  • Page 19 Funcitions and Control 1 hour later. The system will keep this status for 6 hours and then close. 2.2 Under the heating mode, after the setting of the dormant operation, the et temperature will fall 2 centigrades after 1 hour’s operation and will fall 2 centigrades 1 hours later. 3 hours after the preceding operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours and then close down.
  • Page 20 Funcitions and Control Funcitions and Control will be stored in the malfunction resume and will not be revealed. 5.1.12 High load protection control The outdoor system will be stopped if the coil temperature is above 65 for 2 minutes. The indoor fan will be controlled by the thermostat.
  • Page 21 Funcitions and Control to the original status, the malfunction code will not be revealed or processed. 4.transmission abnormality: If the indoor system can’t receive the outdoor system for 8 minutes, the communication abnormality can be confirmed and reported and the outdoor system will be stopped. 5.1.16 Single indoor system operation * Enter condition: First, set the high speed airflow and 30 centigrade set temperature, then press the dormant keys for 6 times within 7 seconds, the system will feedback with 6 rings.
  • Page 22 Funcitions and Control Funcitions and Control the system will enter the remote setting status. 5.1.19 Test program First, connect the test program terminal on the mainboard, then connect the system to the power circuit. The test program will operate as follows. HV series display: The buzzer rings for one time—the signal will be sent to outdoor system for 0.5 second—...
  • Page 23: Main Functions And Control Specifications Of Outdoor Unit

    Funcitions and Control 5.2 The control system of outdoor unit 5.2.1 The operation frequency of outdoor unit and its control 5.2.1.1 The operation frequency control of compressor The operation frequency scope of compressor Mode Minimun operation frequency Maximun operation frequency Heating 20Hz 110Hz...
  • Page 24: The Outdoor Fan Control (Exchange Fan)

    Funcitions and Control Wh_c<50 Max_hz4 80 HZ Max_hz5 60 HZ Wh_c 50 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. When the starting ability is not the maximum, its maximum frequency limitation is calculated by the following equations: The frequency limitation which is affected by the temperature and under the condition of actual ability...
  • Page 25: Protection Function

    Funcitions and Control The temperature of the The temperature of the outdoor Airflow speed outdoor air coil Te Ta 30 —— High Ta<30 —— Keeping the speed —— Medium Ta<26 Ta<24 —— Keeping the speed Ta<23 —— Ta<10 —— Ta<5 15 >Te Stop 5.2.2.2 The outdoor fan control when heating...
  • Page 26 Funcitions and Control 5.2.5.1 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 mean value of the middle 2 values), take the mean value.
  • Page 27 Funcitions and Control During the starting process of the compressor, if the current of the compressor is greater than 17.5A 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. Then continue to run it only after the the power is off.
  • Page 28 Funcitions and Control When Tpg_indoor begins to rise again, and ice_temp_2 Tpg_indoor ice_temp_3 , the frequency of thecompressor doesn’t change. When ice_temp_3 Tpg_indoor 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.
  • Page 29: Value Of Thermistor

    Funcitions and Control 5.3 Value of Thermistor 5.3.1 intdoor Unit Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600 125.0806 -1.93 1.74 146.5609 131.7022...
  • Page 30 Funcitions and Control 43.5912 40.5800 37.7429 -1.47 1.39 41.4249 38.6207 35.9739 -1.45 1.37 39.3792 36.7676 34.2983 -1.43 1.35 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26...
  • Page 31 Funcitions and Control 6.0170 5.7454 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430 4.6944 -1.41 1.36 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47...
  • Page 32 Funcitions and Control 1.3730 1.2525 1.1415 -3.27 3.01 1.3335 1.2153 1.1066 -3.32 3.06 1.2953 1.1794 1.0730 -3.38 3.10 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33...
  • Page 33 Funcitions and Control 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 87.2775 79.6222 72.5729 -1.74 1.60...
  • Page 34 Funcitions and Control 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 10.3000 10.0000 9.7000 -0.75 0.75 9.8975 9.5974 9.2980 -0.76 0.76...
  • Page 35 Funcitions and Control 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 2.1652 2.0032 1.8516 -2.54 2.38 2.0983 1.9393 1.7908 -2.59 2.42 2.0337 1.8778 1.7324 -2.63 2.46...
  • Page 36 Funcitions and Control 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 0.6200 0.5518 0.4907 -4.86 4.36 0.6043 0.5374 0.4775 -4.92 4.41 0.5891 0.5235 0.4648 -4.98 4.45 0.5743 0.5100 0.4524 -5.04 4.50...
  • Page 37 Funcitions and Control 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 2045.9191 1784.3336 1554.7931 -2.52 2.21 1932.0242 1687.8144 1473.1460 -2.50 2.20 1825.0899 1597.0431 1396.2333 -2.48 2.19 1724.6540 1511.6468 1323.7551 -2.47 2.17 1630.2870 1431.2787 1255.4324 -2.45 2.16...
  • Page 38 Funcitions and Control 239.0983 221.9825 205.9065 -1.71 1.61 228.4809 212.4060 197.2844 -1.69 1.59 218.3860 203.2887 189.0648 -1.67 1.57 208.7855 194.6066 181.2273 -1.65 1.55 199.6531 186.3369 173.7524 -1.63 1.54 190.9639 178.4584 166.6217 -1.60 1.52 182.6945 170.9508 159.8181 -1.58 1.50 174.8228 163.7951 153.3249 -1.56 1.48...
  • Page 39 Funcitions and Control 38.9643 37.5045 36.0668 -1.11 1.09 37.6569 36.2078 34.7831 -1.14 1.13 36.3996 34.9622 33.5513 -1.18 1.16 35.1903 33.7653 32.3689 -1.22 1.19 34.0269 32.6151 31.2338 -1.26 1.23 32.9075 31.5096 30.1438 -1.30 1.27 31.8302 30.4467 29.0970 -1.33 1.30 30.7933 29.4246 28.0915 -1.37 1.34...
  • Page 40 Funcitions and Control 9.7563 8.9971 8.2895 -3.00 2.80 9.4901 8.7441 8.0495 -3.05 2.84 9.2322 8.4993 7.8175 -3.09 2.88 8.9824 8.2623 7.5931 -3.14 2.92 8.7404 8.0329 7.3760 -3.19 2.96 8.5059 7.8108 7.1660 -3.24 3.00 8.2787 7.5958 6.9629 -3.29 3.04 8.0584 7.3875 6.7664 -3.33 3.09...
  • Page 42: Parts And Functions

    Parts and Functions Parts and Functions Remote controller Indoor Unit Air Purifying Filter (inside) Inlet Supplemented electrical Operation mode QUIET SLEEP HEALTH TURBO heating Remote controller 9. TURBO button Emergency 10. HEAT button Inlet grille Switch 11. COOL button 12. AUTO button Outlet 13.
  • Page 43 Parts and Functions Operation Air Flow Direction Adjustment Unit start / stop 1.Status display of air flow Press button to enter additional options, when cycle display to will flash. And then press Remote controller enter to up and down air flow function. Press button.
  • Page 44: Test Operation

    Parts and Functions Operation Timer On/Off On-Off Operation TURBO/QUIET Operation (This function is unavailable on some models.) 1.After unit starts, select your desired operation mode. TURBO Operation 2.Press TIMER button to change TIMER mode. Every When you need rapid heating or cooling, you can use this function. time the button is pressed, display changes as follows: Press TURBO button, the remote controller will show and then achieve to the turbo function.
  • Page 45: Operation Mode

    Parts and Functions Operation 5. When quiet sleeping function is set to 8 hours the quiet Comfortable SLEEP sleeping time can not be adjusted.When TIMER function is set,the quiet sleeping function can't be set up.After the sleeping function is set up,if user resets TIMER function, the SLEEP Press button , the remote controller will...
  • Page 46: Indoor Unit Installaion

    Installaion Indoor Unit Installaion Necessary Tools for Installation Power Source Torque wrench Driver Before inserting power into receptacle, check the voltage without (17mm,22mm,26mm) Nipper fail. Pipe cutter Hacksaw The power supply is the same as the corresponding nameplate. Flaring tool Hole core drill Install an exclusive branch circuit of the power.
  • Page 47: Indoor Unit Installation

    Installaion Indoor Unit Installation ・ [ Left Left-rear piping ] Fitting of the Mounting Plate and Positioning of the wall Hole In case of left side piping, cut away, with a nipper, the lid for left piping. In case of left-rear piping, bend the pipes according to the piping When the mounting plate is rst xed direction to the mark of hole for left-rear piping which is marked on heat insulation materials.
  • Page 48 Installaion Correct Incorrect When connecting the cable after installing the indoor unit 1. Insert from outside the room cable into left side of the wall Lean Damage of are Partial Too outside Crack hole, in which the pipe has already existed. 2.
  • Page 49: Replacement Of Air Purifying Filter

    Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper wipe the air conditioner by using a temperature soft and dry cloth.For serious stains, use a neutral detergent diluted with Do not usewater,wipe the controller water.Wring the water out of the...
  • Page 50: Trouble Shooting

    Installaion Trouble shooting Cautions Before asking for service, check the following grille of the air Do not obstruct or cover the ventilation first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner .In no Phenomenon Cause or check points...
  • Page 51: Installations

    Installation 7.Installation Installation Manual of Room Air Conditioner 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...
  • Page 52 Installation 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 15cm Optional parts for piping Non-adhesive tape...
  • Page 53 Installation WARNING CAUTION Domestic air conditioner...
  • Page 54: Safety Precautions

    Installation Safety Precautions WARNING Have the unit professionally installed. Be sure to carefully follow each step in this handbook when Improper installation by an unqualified person may result installing the unit. in water leak, electric shock, or fire. Improper installation may result in water leak, electric shock, smoke or fire.
  • Page 55 Installation Safety Precautions Precautions for Handling Units for Use with R410A Caution Do not use the existing refrigerant piping Use a vacuum pump with a reverse-flow check valve. If other types of valves are used, the vacuum pump oil will The old refrigerant and refrigerator oil in the existing piping contain a large amount of chlorine, which will cause the flow back into the refrigerant cycle and cause the refrigerator...
  • Page 56 Installation Safety Precautions Before Installing (Relocating) the Unit or Performing Electric Work Caution Ground the unit. Do not spray water on the air conditioners or immerse the Do not connect the grounding on the unit to gas pipes,water air conditioners in water. pipes, lightning rods, or the grounding terminals of Water on the unit presents a risk of electric shock.
  • Page 57 Installation Domestic air conditioner...
  • Page 58: Read Before Installation

    Installation Read Before Installation Piping Materials Types of Copper Pipes (Reference) Maximum Operation Pressure Applicable Refrigerants 3.4MPa R22, R407C 4.15MPa R410A Use pipes that meet the local standards. Piping Materials/Radial Thickness Use pipes made of phosphorus deoxidized copper. Since the operation pressure of the units that use R410A is higher than that of the units for use with R22, use pipes with at least the radial thickness specified in the chart below.
  • Page 59 Installation Domestic air conditioner...
  • Page 60 Installation Air outlet Wind direction Cushion rubber 4.Installation dimension(Unit:mm) Domestic air conditioner...
  • Page 61 Installation 1U09BS2ERA 1U12BS2ERA 1U18FS2ERA 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 rst makes working easier.
  • Page 62 Installation Domestic air conditioner...
  • Page 63 Installation (e.g.1U18FS1ERA) Domestic air conditioner...
  • Page 64 Installation 1U09BS2ERA 1U12BS2ERA 1U18FS2ERA T 25A/250V. FOR 18K FOR 09K 12K Outdoor unit Outdoor unit Model 1U09BS2ERA 1U18FS2ERA To Indoor unit 1U12BS2ERA To Indoor unit Connecting wiring 4G0.75mm 4G0.75mm POWER Power cable 3G1.5mm 3G2.5mm POWER Domestic air conditioner...
  • Page 65 Installation Outdoor Unit When the The wiring of compressor is wrong or Suction temperature sensor failure the connection is poor Lack of refrigerant Check if there is leakage in the unit. Domestic air conditioner...
  • Page 66: Error Codes And Descirption

    Service Diagnosis 8.Service Diagnosis 8.1 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.When a signal transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.
  • Page 67: Error Codes And Description Indoor Display

    Service Diagnosis 8.4.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 .77 Outdoor outdoor units Room temperature sensor failure Page .67 Indoor Malfunction Heat-exchange sensor failure Page .67...
  • Page 68: Thermistor Or Related Abnormality

    Service Diagnosis 8.4.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure outdoor display LED1 flash 10 times Frost-removing temperature sensor failure LED1 flash 11 times Suction temperature sensor failure LED1 flash 12 times Ambient temperature sensor failure LED1 flash 13 times Exhaust temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 69: Eeprom Abnormal

    Service Diagnosis 8.4.2 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 when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed...
  • Page 70 Service Diagnosis 8.4.3 Indoor fan motor malfunction Indoor Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection Malfunction when the detected rotation feedback singal don’t receiced in 2 minutes Decision Conditions Supposed...
  • Page 71 Service Diagnosis Turn off power supply and rotate fan by hand Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan Does it rotate? motor connector, then turn power ON Check output of fan motor connector Is motor power voltage DC310V...
  • Page 72: Outdoor Dc Fan Motor Fault

    Service Diagnosis 8.4.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed...
  • Page 73: Ipm Protection

    Service Diagnosis 8.4.5 IPM protection Outdoor display LED1 flash 2 times Method of IPM protection is detected by checking the compressor running condition and so on Malfunction Detection Malfunction The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions circuit component of IPM is broken and led to IPM protection...
  • Page 74 Service Diagnosis 8.4.6 Over-current of the compressor Outdoor Display LED1 flash 3 or 24 or 25 times Method of The current of the compressor is too high Malfunction Detection Malfunction when the IPM Module is damaged Decision or the compressor is damaged Conditions power supply.
  • Page 75: The Communication Fault Between Ipm And Outdoor Pcb

    Service Diagnosis 8.4.7 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 Malfunction The outdoor PCB broken leads to communication fault Decision The IPM module broken leads to communication fault Conditions...
  • Page 76 Service Diagnosis 8.4.8 Power Supply Over or under voltagve fault outdoor display: LED1 flash 6 times The power supply is over voltage Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction Detection Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer...
  • Page 77 Service Diagnosis 8.4.9 Overheat Protection For Exhaust Temperature outdoor display LED1 flash 8 times Method of The exhaust temperature control is checked with the temperature being detected Malfunction by the exhaust pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110 Decision Conditions Supposed...
  • Page 78: The Communication Fault Between Indoor And Outdoor

    Service Diagnosis 8.4.10 The communication fault between indoor and outdoor Indoor display outdoor display LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault Decision The indoor PCB broken leads to communication fault Conditions...
  • Page 79 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 80: Loss Of Synchronism Detection

    Service Diagnosis 8.4.11 Loss of synchronism detection Inverter side current detection is abnoraml Outdoor Display LED1 flash 18 times LED1 flash 19 times Method of The position of the compressor rotor can not detected normally Malfunction Detection Malfunction when the wiring of compressor is wrong or the connection is poor; Decision or the compressor is damaged Conditions...
  • Page 81 Service Diagnosis 8.4.12 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature Malfunction being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 65 twices in 30 minutes.
  • Page 82: Removal Procedure

    Removal Procedure Removal of indoorunit...
  • Page 84 Removal Procedure Open the front panel until it is on the horizontal position, and then release the pivots on both sides of the unit to remove the front panel. Please close the panels before start the removal procedure of front grille. Slide the front panel from one side to another to release each axis.
  • Page 85 Removal Procedure HOOKS three...
  • Page 86 Removal Procedure flap flap flap flap...
  • Page 87 Removal Procedure...
  • Page 88 Removal Procedure...
  • Page 89 Removal Procedure...
  • Page 90 Removal Procedure...
  • Page 91 Removal Procedure...
  • Page 92 Removal Procedure...
  • Page 93 Removal Procedure...
  • Page 94: The Removal Procedure Of Outdoor

    Removal of procedure 9.2 The removal procedure of outdoor 9.2.1 Removal of Outdoor panel 1. Features Loosen the service Be careful not to cover screw and remove the service cover. Domestic air conditioner...
  • Page 95 Removal of procedure 2. Remove the panels. Loosen the 4 screws and lift the top panel Loosen the screws of the panel. Pull and remove the front panel. Domestic air conditioner...
  • Page 96 Removal of procedure 9.2.2 Romoval of Electrcal Box screws, then lift the electrical box Domestic air conditioner...
  • Page 97 Removal of procedure 9.2.3 Romoval of the Side panel screws and remove the side panel. Domestic air conditioner...
  • Page 98 Removal of procedure Remove the screws and remove the side panel. Domestic air conditioner...
  • Page 99: Removal Of Fan And Fan Motor

    Removal of procedure 9.2.4 Removal of fan and fan motor Put the lead wire Loosen the of motor when remove the fan the propeller fan) Domestic air conditioner...
  • Page 100 Removal of procedure screws and lift the fan motor. Domestic air conditioner...
  • Page 101 Removal of procedure screws, then lift the Domestic air conditioner...
  • Page 102 Removal of procedure screws, then lift the proof plate. Domestic air conditioner...
  • Page 103 Removal of procedure Cut down the and pull out the compressor and remove the Domestic air conditioner...
  • Page 104 Removal of procedure Domestic air conditioner...
  • Page 105 Removal of procedure Domestic air conditioner...
  • Page 106 Removal of procedure Remove the Domestic air conditioner...
  • Page 107: Wiring Diagrams

    Wiring Diagram 10.Wiring Diagrams 10..1. INDOOR UNIT DC FAN MOTOR left stepmoter up-down stepmoter SW 1 EMERGENCY SW ITCH PIPING TEMP SENSOR AMBIENT TEMP SENSOR RECEIVER DISPLAY Domestic Air Conditioner...
  • Page 108: Outdoor Unit

    Wiring Diagram 10.2.Outdoor unit Domestic Air Conditioner...
  • Page 109: Circuit Diagrams

    Circuit Diagrams 11.Circuit Diagrams 11.1.INDOOR UNIT +12V I C11 ULN2003A 100nF FLZ1 CN10 HXF1 100nF R103 20K R104 2K NDI-04H R102 25/35 B5B-XH-A +12V R109 24C04 100nF DISPLAY-0011800161 M ODE EEPROM B10B-PH-K-S TJC8-04 R85 10K ONLINE TJC8-04 2SA1037AK ROOM SRCK PIPE 4.7uF-50V R27 R28...
  • Page 110 Circuit Diagrams 11.2.OUTDOORUNIT 11.2.1Control Bard 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 S14K350 225/275V 225/275V 225/275V 100/1W 8MH/20A 8MH/20A 103/275V +12V CN16 AC-N 472/250V/275V AC-L AC-L +12V S14K350 S14K350 472/250V/275V...
  • Page 111 Circuit Diagrams 11.2.2 module board Circuit Diagram C N8 PS219 97-4A C N3 C N4 D207 C N5 FF AF 30U60 DN C N1 C N6 C 404 C 406 C 405 SGH40N60 UF D 47 4/630 V 47 4/630 V 47 4/275 V (40A@25 AC-L...
  • Page 112: Description Of Coding Rules Of Unit Model

    Nominal cooling capacity (18000 BTU/h) Type of outdoor unit U(normal type) The maximum combination number means18000BTU. 1U18FS2ERA Examples: ,It represents wall-mounted split type heat pump air conditioner cooling AS18ZS2ERA capacity is 18000BTU/h,and the power supply is 220-240V/50Hz,”S” means Easy stock ,and"E"...
  • Page 113 The end Sincere Forever Haier Group Kang Lijun Guo Liang He Shiquan 86 532 88936935 Wu Hongjin...

This manual is also suitable for:

As18zs2era