Johnson Controls YJHJXH018BARR-FX Service Manual
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Johnson Controls YJHJXH018BARR-FX Service Manual

Johnson Controls YJHJXH018BARR-FX Service Manual

Wall mounted type dc inverter free match ek-series
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SERVICE MANUAL

Order No.
Wall mounted Type
FREE MATCH EK
YJHJXH018BARR-FX
YJHJYH018BARRA-X
indoor unit and remote controller
outdoor unit

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Summary of Contents for Johnson Controls YJHJXH018BARR-FX

  • Page 1: Service Manual

    SERVICE MANUAL Order No. Wall mounted Type FREE MATCH EK YJHJXH018BARR-FX YJHJYH018BARRA-X indoor unit and remote controller outdoor unit...

  • Page 2: Table Of Contents

    YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX AS18GN3ERA Functions Category 1U18EN2ERA make your room full of an abundance natural negative ions. Healthy negative ion Avoid the child's wrong operation on the remote controller Child lock The 3D airflow is able to deliver the airflow horizontally and vertically. 3D air flow Use the timer function to set on,or off,or from on to off,or from off to on 24Hour timer...

  • Page 8: Specifications

    YJHJZH018BARRAFX 3. Specifications AS18GN3ERA/1U18EN2ERA n i l 16381 16381 4127 4127 377~1412~2850 163~941~2250 6.35 12.7 16.0 AS18GN3ERA 14.2 15.0 13.5 12.7 13.0 11.2 1412 938X187X265 1016X304X360 10.5 12.5 55/52/48...
  • Page 9 YJHJZH018BARRAFX Specifications 1U18EN2ERA SNB130FGYMC-L1 FV50S R410a 1176.5 1176.5 Propeller 1412 780X245X640 930X340X714 35.5...

  • Page 10: Indoor Unit Connectors

    YJHJZH018BARRAFX Connector Wiring Diagram 4.1 Indoor unit Connectors Connectors PCB(1) (Control PCB) For AS18GN3ERA 1) CN26 Connector for fan motor 2) CN1 Connector for heat exchanger thermistor and Room temperature thermistor 3) CN11’ Connector for UP&DOWN STEP motor 4) CON2 Connector for power N wire 5) CON1 Connector for power L 6) CON13 Connector for power GRN 7) CN32 Connector for display board...
  • Page 11 YJHJZH018BARRAFX Connector Wiring Diagram PCB(1) CN11’ CN32 CN26 CON13 CON1 CON2 CN34 CON7 Domestic Air Conditioner...
  • Page 12 YJHJZH018BARRAFX Connector Wiring Diagram 4.2: outdoor unit Connectors PCB(1) (Control PCB) for 1U18EN2ERA 1) CN1,CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN22 Connector for DC POWER 15Vand 5V to the module board 4) CN9,CN8 Connector for CN2,CN1 on the module board 5) CN21 Connector for fan motor 6) CN10 Connector for four way valve coil 7) CN17,CN18,CN19, CN20 Connector for thermistors...
  • Page 13 YJHJZH018BARRAFX Connector Wiring Diagram PCB (1) C N 2 6 C N 2 4 C N 2 3 C N 2 2 C N 2 1 C N 1 7 C N 1 8 C N 1 9 C N 2 0 C N 1 6 C N 4 C N 1 0...
  • Page 14 YJHJZH018BARRAFX Connector Wiring Diagram PCB (2) CN11 CN10 Domestic Air Conditioner...

  • Page 15: Funcitions And Control

    YJHJZH018BARRAFX Funcitions and Control - S M 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

    YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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.
  • Page 18 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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: The Control System Of Outdoor Unit

    YJHJZH018BARRAFX 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)

    YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX Funcitions and Control The temperature of the The temperature of the outdoor Airflow speed outdoor air coil Te —— High Ta 30 Ta<30 —— Keeping the speed Ta<26 —— Medium Ta<24 —— Keeping the speed Ta<23 —— Ta<10 —— Ta<5 15 >Te Stop...
  • Page 26 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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.
  • Page 28 YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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...
  • Page 30 YJHJZH018BARRAFX 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...
  • Page 31 YJHJZH018BARRAFX 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...
  • Page 32 YJHJZH018BARRAFX 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...
  • Page 33 YJHJZH018BARRAFX 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...
  • Page 34 YJHJZH018BARRAFX 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...
  • Page 35 YJHJZH018BARRAFX 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...
  • Page 36 YJHJZH018BARRAFX 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...
  • Page 37 YJHJZH018BARRAFX 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...
  • Page 38 YJHJZH018BARRAFX 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...
  • Page 39 YJHJZH018BARRAFX 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...
  • Page 40 YJHJZH018BARRAFX 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...
  • Page 41 YJHJZH018BARRAFX...
  • Page 42 System Configration YJHJYH018BARRAFX-SM POWER/SOFT button is not available for 07k 09k 12k. Domestic Air Conditioner...

  • Page 43: System Configuration

    System Configration YJHJYH018BARRAFX-SM Operation Emergency operation and test operation Base Operation Emergency Operation: Use this operation only when the remote controller Remote controller is defective or lost. When the emergency operation switch is pressed,the" Pi "sound is heard once, which SPEED means the start of this operation.

  • Page 44: Sleep Operation

    YJHJZH018BARRAFX Parts and Functions Operation Sleep Operation 4. In FAN mode It has no SLEEP function. Press button to enter additional options, when 5.Set the wind speed change when sleeping cycle display to will flash. And then press If the wind speed is high or middle before setting for the enter to sleep function.
  • Page 45 YJHJZH018BARRAFX Parts and Functions EUROPEAN REGULATIONS Operation CONFORMITY FOR THE MODELS Timer On/Off On-Off Operation All the products are in conformity with the following European provision: 1.After unit starts, select your desired operation mode. - Low Voltage Directive 73/23/EEC 2.Press TIMER button to change TIMER mode. Every - Low Voltage Directive 2006/95/EC time the button is pressed, display changes as follows: -Electomagnetic CompatibilitY 89/336/EEC...

  • Page 46: Replacement Of Air Purifying Filter

    YJHJZH018BARRAFX Installation 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 47 YJHJZH018BARRAFX Installation Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and power source...

  • Page 48: Trouble Shooting

    YJHJZH018BARRAFX Installation 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 49: Indoor Unit Installaion

    YJHJZH018BARRAFX Installation Indoor Unit Installaion Necessary T ools 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 50: Installations

    YJHJZH018BARRAFX Installation 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 51 YJHJZH018BARRAFX Installation 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 Crack Partial Too outside hole, in which the pipe has already existed. 2.

  • Page 52: Installation Manual Of Room Air Conditioner

    YJHJZH018BARRAFX 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...
  • Page 53 YJHJZH018BARRAFX Installation 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 15cm Optional parts for piping...

  • Page 54: Safety Precautions

    YJHJZH018BARRAFX Installation Safety Precautions WARNING CAUTION Domestic air conditioner...
  • Page 55 YJHJZH018BARRAFX Installation Safety Precautions Domestic Air Conditioner...
  • Page 56 YJHJZH018BARRAFX Installation Safety Precautions Precautions for Handing Units for with R410A Domestic Air Conditioner...
  • Page 57 YJHJZH018BARRAFX Installation Safety Precautions Domestic Air Conditioner...

  • Page 58: Read Before Installation

    YJHJZH018BARRAFX Installation Read Before Installation Domestic Air Conditioner...
  • Page 59 YJHJZH018BARRAFX Installation Read Before Installation Domestic Air Conditioner...
  • Page 60 YJHJZH018BARRAFX Installation Read Before Installation Domestic Air Conditioner...

  • Page 61: Installation Procedure

    YJHJZH018BARRAFX Installation Installation Procedure Air outlet Wind direction Cushion rubber 4.Installation dimension(Unit:mm) Model 1U09BS2ERA Power Wiring Terminal 1U12BS2ERA Power Wiring 1U18EN2ERA Distribution Domestic Air Conditioner...
  • Page 62 YJHJZH018BARRAFX Installation Installation Procedure 1U09BS2ERA 1U12BS2ERA 1U18EN2ERA 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. The connection pipe is specialized for R410A.
  • Page 63 YJHJZH018BARRAFX Installation Installation Procedure Air Tightness Test Domestic Air Conditioner...
  • Page 64 YJHJZH018BARRAFX Installation (e.g.1U18EN2ERA) Domestic air conditioner...
  • Page 65 YJHJZH018BARRAFX Installation 1U09BS2ERA 1U12BS2ERA 1U18EN2ERA T 25A/250V. FOR 18K FOR 09K 12K Outdoor unit Outdoor unit Model 1U09BS2ERA 1U18EN2ERA 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 66 YJHJZH018BARRAFX 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 67: Service Diagnosis

    YJHJZH018BARRAFX 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 68: Error Codes And Description Indoor Display

    YJHJZH018BARRAFX 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 .76 Outdoor outdoor units Room temperature sensor failure Page .67 Indoor Malfunction Heat-exchange sensor failure Page .67...

  • Page 69: Thermistor Or Related Abnormality

    YJHJZH018BARRAFX 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 70: Eeprom Abnormal

    YJHJZH018BARRAFX 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 71 YJHJZH018BARRAFX 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 72: Outdoor Dc Fan Motor Fault

    YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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...
  • Page 74 YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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...
  • Page 77 YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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

    YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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...

  • Page 82: Removal Procedure

    YJHJZH018BARRAFX Removal Procedure Removal of indoorunit Domestic Air Conditioner...
  • Page 83 YJHJZH018BARRAFX Domestic Air Condiioner...
  • Page 84 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX Removal Procedure HOOKS three Domestic Air Conditioner...
  • Page 86 YJHJZH018BARRAFX Removal Procedure flap flap flap flap Domestic Air Conditioner...
  • Page 87 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...
  • Page 88 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...
  • Page 89 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...
  • Page 90 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...
  • Page 91 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...
  • Page 92 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...
  • Page 93 YJHJZH018BARRAFX Removal Procedure Domestic Air Conditioner...

  • Page 94: The Removal Procedure Of Outdoor

    YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 9.2.2 Romoval of Electrcal Box screws, then lift the electrical box Domestic air conditioner...
  • Page 97 Removal of procedure YJHJZH018BARRAFX 9.2.3 Romoval of the Side panel screws and remove the side panel. Domestic air conditioner...
  • Page 98 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX 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 YJHJZH018BARRAFX Removal of procedure screws and lift the fan motor. Domestic air conditioner...
  • Page 101 YJHJZH018BARRAFX Removal of procedure screws, then lift the Domestic air conditioner...
  • Page 102 Removal of procedure YJHJZH018BARRAFX screws, then lift the proof plate. Domestic air conditioner...
  • Page 103 Removal of procedure YJHJZH018BARRAFX Cut down the and pull out the compressor and remove the Domestic air conditioner...
  • Page 104 YJHJZH018BARRAFX Removal of procedure Domestic air conditioner...
  • Page 105 YJHJZH018BARRAFX Removal of procedure Domestic air conditioner...
  • Page 106 YJHJZH018BARRAFX Removal of procedure Remove the Domestic air conditioner...

  • Page 107: Wiring Diagrams

    YJHJZH018BARRAFX Wiring Diagram 10.Wiring Diagrams 10.1 INDOOR UNIT E M E R G E N R Y S W IT C H Double-way air exchange A N D Domestic Air Conditioner...
  • Page 108 YJHJZH018BARRAFX Wiring Diagram 10.2.Outdoor unit CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit. Domestic Air Conditioner...
  • Page 109 YJHJZH018BARRAFX Circuit Diagrams 11.Circuit Diagrams 11.1.INDOOR UNIT CN32' display board 0011800161 display board 0010402241 CN32'' SWITCH EEPR OM SW 1 SWITCH 0.1uF SRCK JTP1 288LA ZJ/SS SW 1' 0.1uF TSVC-1 CHECK/S_TIME TEST CN48 DIGH MODE DIGL 0.1uF TJC8-02 MODE TJC8-02 AT24C0 2B 2SA1037AK B2B-XH-A-R-red...

  • Page 110: Outdoorunit

    YJHJZH018BARRAFX Circuit Diagrams 11.2.OUTDOORUNIT 11.2.1Control Bard Circuit Diagrams COM heater AC-L AC-N AC-N OUT AC-L OUT Four -Way Comment: CN25 CN11 CN27 CN36 Three-speed AC Fan Two-speed AC Fan CN14 CN15 White Black C COM FUSE1 PTC1 J24 J25 J26 J27 Black 2U/450V FUSE2...
  • Page 111 YJHJZH018BARRAFX Circuit Diagrams 11.2.2 module board Circuit Diagram 5.2M H /15A C N7 C N6 C N1 C N2 D 207 FF A 30U60D N PS21964-AT /A ST /PS219A 4-A ST X C N8 C N3 IC 8 C 405 C 404 C 406 A C-L...
  • Page 112 YJHJZH018BARRAFX The end Sincere Forever...

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