York YJHMXH007BARR-FX Service Manual
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York YJHMXH007BARR-FX Service Manual

Ek-series
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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
YJHMXH007BARR-FX
YJHMXH009BARR-FX
YJHMXH012BARR-FX
YJU2YH018BARRA-X
EK-Series

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Summary of Contents for York YJHMXH007BARR-FX

  • Page 1 EK-Series YJHMXH007BARR-FX YJHMXH009BARR-FX YJHMXH012BARR-FX YJU2YH018BARRA-X 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.

  • Page 2: Table Of Contents

    Table of Contents Contents 1.Introduction-------------------------------------------------------------------------------------------------------------------1 2.List of fuctions---------------------------------------------------------------------------------------------------------------6 3.Specifications ----------------------------------------------------------------------------------------------------------------7 4.Printed Circuit Board Connector Wiring Diagram -----------------------------------------------------------------9 5.Funcitions and Control---------------------------------------------------------------------------------------------------14 5.1 Main functions and control specification of indoor unit - --------------------------------------------------------14 -----------------------------------------------------------------------------------22 The control system of outdoor unit Value of termistor ------------------- -----------------------------------------------------------------------------------22 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 Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. 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.
  • Page 7 Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 8: List Of Fuctions

    2 List of fuctions Functions Category Avoid the child's wrong operation on the remote controller Child lock 3D air flow The 3D airflow is able to deliver the airflow horizontally and vertically. 24Hour timer Use the timer function to set on,or off,or from on to off,or from off to on Automatic return to previous operation conditions after sudden power blackout Auto restart Easy clean...

  • Page 9: Specifications

    3 Specifications YJHMXH007/09/12BARR-FX YJU2YH018BARRA-X 07/09+12 12+12 M o d e l C o o lin g H e a tin g C o o lin g H e a tin g 4 .7 4 .7 5 .0 5 .1 C a pacity R a te d(M in.-M ax.) B tu /h 1 6 0 0 0 1 6 0 0 0...
  • Page 10 YJU2YH018BARRA-X O u td o o r U n it 12+12 07/09+12 C a s in g C o lo r W h ite T yp e ro ta ry C o m p re s s o r C o m p re s s o r M o d e l S N B 1 3 0 F G Y M 2 9 0 0...

  • Page 11: Printed Circuit Board Connector Wiring Diagram

    Connector wring diagram 4.Printed Circuit Board Connector Wiring Diagram indoor unit Connectors PCB(1) (Control PCB) For YJHMXH007/09/12BARR-FX 1) CN9 CN27 Connector for fan motor and feedback 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) CN30 CN31 Connector transformer...
  • Page 12 Connector wring diagram PCB(1) CN11 CN27 CN32 CN26 CN20 CON1 CN36 CON2 CON6 CN30 CON8 CN34 CON7 CN31 Domestic Air Conditioner...

  • Page 13: Outdoor Unit

    Connector wiring diagram Outdoor unit Connectors PCB(1) (Control PCB) For YJU2YH018BARRA-X 1) CN1,CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN23 Connector for DC POWER 15Vand 5V to the module board 4) CN9,CN10 Connector for CN2,CN1 on the module board 5) CN22 Connector for fan motor 6) CN11 Connector for four way valve coil 7) CN17,CN18,CN19,CN20,CN21 Connector for thermistors...
  • Page 14 Connector wiring diagram PCB(1) CN36 CN10 CN25 CN23 CN28 CN24 Domestic air conditioner...
  • Page 15 Connector wiring diagram CN11 CN10 PCB(2) Domestic air conditioner...

  • Page 16: Funcitions And Control

    Functions and control 5.Funcitions and Control 5.1 Main functions and control specification 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 17: Dehumidifying Mode

    Functions and control 5.1.3 Dehumidifying mode. * temperature control range: 16---30 * temperature difference: Control feature: send the dehumidifying 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 dehumidifying frequency for 10 minutes and then at the low dehumidifying mode for six minutes.
  • Page 18 Functions and control *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. When Tr> Ts+2 , low speed. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch.
  • Page 19 Functions 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 20 Functions and control operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours and then close down. 2.3 During the dormant time, except the change of the system mode or a new press on the dormant setting keys, the timing of the 8 hours dormancy will take the first timing as the start time, any presses on other keys will not affect the original timing.
  • Page 21 Functions and 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. The outdoor system can be restarted when the coil temperature is below 42 and the system has been stopped for 3 minutes.
  • Page 22 Functions and control 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. * After the system enters the separate indoor system operation mode, the indoor system will operate according to the set mode and neglect the communication signals of the outdoor system.
  • Page 23 Functions and control 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 24: The Control System Of Outdoor Unit

    Functions 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 5.2.1.2 The starting of compressor When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz for one minute (the overheating protection of the outdoor unit air-blowing temperature,...
  • Page 25 Functions and control Serial Temperature scope Frequency limitation Wh_c<-12 Max_hz8 120 HZ Wh_c<-8 Max_hz7 120HZ Wh_c<-2 Max_h z4 120 HZ Wh_c<5 Max_hz5 120HZ Wh_c<12 Max_hz1 100HZ Wh_c<18 Max_hz2 56 HZ Wh_c> 18 Max_hz6 44 HZ Remarks: the above are the maximum frequency limitations of the complete appliance which are affected by the environment, and they have nothing to do with the ability of the indoor unit.
  • Page 26 Functions and control The calculation of the actual output frequency: when there is no healthy airflow: F =F-ED-* P K When the healthy airflow has been set: F =F-ED-* P K airflow speed K healthy airflow When refrigerating, it is needed to satisfy <...

  • Page 27: Protection Function

    Functions and control When the outdoor unit is shut down, the valve is opened completely for 2 minutes, and then begin initialization. The scope of refrigerationg valve 90-----480 steps The scope of heating valve 80-----480 steps The valves are adjusted according to the degree of superheat SHa.
  • Page 28 Functions and control The compressor stops Fgh_t1 2 Fgh_t1 65 Decreasing the frequency rapidly Fgh_t2 Fgh_t2 2 P Decreasing the frequency slowly Fgh_t3 Fgh_t3 2 Q Prohibiting increasing the frequency Fgh_t4 Fgh_t4 2 R Increasing slowly Fgh_t5 Fgh_t5 2 Normal N Decreasing at the speed of 1HZ/1 second P Decreasing at the speed of 1Hz/10...
  • Page 29 Functions and control When the outdoor environment temperature is higher than 50 ,AC current protection value decreases by 20AD 5.2.5.5 Antifreezing protection of the indoor heat exchanger When refrigerating/heating, prevent freezing. Tpg_indoor is the minimum value of the effective indoor unit (start it and it is in accord with the running state).
  • Page 30 Functions and control light shoud be off for 5 seconds. b) For the units’ malfunctins 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 31: Value Of Thermistor

    Functions and control 5.3 Value of thermistor Indoor unit Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 3% Temp.(( )) Max.(KΩ) Normal(KΩ) Min.(KΩ) 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 118.2434 -1.91 1.73 138.1285...
  • Page 32 Functions and control 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 29.2545 27.5519 25.9250 -1.29 1.24...
  • Page 33 Functions and control 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 4.5083 4.2666 4.0342 -1.57 1.51...
  • Page 34 Functions and control 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 1.0910 0.9882 0.8942 -3.69 3.37...
  • Page 35 Functions and control outdoor Unit Ambient Sensor, Defrosting Sensor, Pipe sensor R25 =10K 3% 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 118.2434 -1.91 1.73...
  • Page 36 Functions and control 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 29.2545 27.5519 25.9250 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22 26.5605 25.0851 23.6704 -1.25 1.20...
  • Page 37 Functions and control 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 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145 3.8862 -1.61 1.55 4.2026 3.9686 3.7443 -1.65 1.59...
  • Page 38 Functions and control 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 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326 0.8424 -3.80 3.46...
  • Page 39 Functions and control 9687.0270 8074.3787 6724.1389 -2.88 2.41 9057.2314 7564.2244 6311.6413 -2.87 2.41 8472.2852 7089.4741 5927.0206 -2.86 2.40 7928.7217 6647.4547 5568.2222 -2.84 2.39 7423.3626 6235.7109 5233.3554 -2.83 2.39 6953.2930 5851.9864 4920.6791 -2.82 2.38 6515.8375 5494.2064 4628.5894 -2.80 2.37 6108.5393 5160.4621 4355.6078 -2.79 2.37...
  • Page 40 Functions and control 691.3524 622.3161 559.6694 -2.16 1.96 656.8979 592.1831 533.3634 -2.14 1.95 624.3328 563.6604 508.4261 -2.12 1.93 593.5446 536.6540 484.7796 -2.10 1.92 564.4275 511.0760 462.3510 -2.09 1.90 536.9865 486.9352 441.1516 -2.07 1.89 511.0105 464.0500 421.0258 -2.05 1.87 486.4151 442.3499 401.9146 -2.03 1.86...
  • Page 41 Functions and control 89.0211 85.0614 81.2048 -1.18 1.15 85.4976 81.7908 78.1744 -1.15 1.12 82.1303 78.6615 75.2715 -1.13 1.10 78.9116 75.6668 72.4902 -1.10 1.08 75.8343 72.8004 69.8249 -1.08 1.06 72.8916 70.0561 67.2703 -1.05 1.03 70.0770 67.4283 64.8213 -1.03 1.01 67.3844 64.9115 62.4731 -1.00 0.99...
  • Page 42 Functions and control 18.5157 17.4166 16.3680 -2.02 1.93 17.9590 16.8769 15.8458 -2.06 1.96 17.4214 16.3564 15.3427 -2.10 2.00 16.9023 15.8542 14.8577 -2.15 2.04 16.4010 15.3696 14.3902 -2.19 2.08 15.9167 14.9020 13.9394 -2.23 2.12 15.4489 14.4506 13.5047 -2.27 2.16 14.9968 14.0149 13.0855 -2.32 2.19...

  • Page 43: Service Diagnosis

    Service diagnosis 6. Service Diagnosis 6.1 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 44: Error Codes And Description Indoor Display

    Service diagnosis 6.3 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 .52 Outdoor outdoor units Room temperature sensor failure Page .43 Indoor Malfunction Heat-exchange sensor failure Page .43...

  • Page 45: Thermistor Or Related Abnormality

    Service diagnosis 6.3.1 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 46: Eeprom Abnormal

    Service diagnosis 6.3.2 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 47: 3Indoor Ac Fan Motor Malfunction

    Service diagnosis 6.3.3 Indoor AC 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 signal don’t received in 2 minutes Decision Conditions Supposed...

  • Page 48: Outdoor Dc Fan Motor Fault

    Service diagnosis 6.3.4 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 49: Ipm Protection

    Service diagnosis 6.3.5 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 ■...

  • Page 50: Over-Current Of The Compressor

    Service diagnosis 6.3.6 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 voltage is too low or too high Supposed...

  • Page 51: The Communication Fault Between Ipm And Outdoor Pcb

    Service diagnosis 6.3.7 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 ■...

  • Page 52: Power Supply Over Or Under Voltage Fault

    Service diagnosis 6.3.8 Power Supply Over or under voltage 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 53: Overheat Protection For Discharge Temperature

    Service diagnosis 6.3.9 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 by the Discharge pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110 Decision Conditions Supposed...

  • Page 54: The Communication Fault Between Indoor And Outdoor

    Service diagnosis 6.3.10 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 ■...
  • Page 55 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 56: Loss Of Synchronism Detection

    Service diagnosis 6.3.11 Loss of synchronism detection Inverter side current detection is abnormal 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 57: High Work-Intense Protection

    Service diagnosis 6.3.12 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 58: Exponent

    Exponent 7.Exponent Parts and Functions POWER/SOFT button is not available for 07k、09k、12k. Domestic Air Conditioner...

  • Page 59: Emergency Operation

    Exponent 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 60 Exponent Operation Sleep Operation In AUTO mode The unit operaters in corresponding sleep mode Before going to bed,you can simply press the SLEEP adapted to the automatically selected operation button and unit will operate in SLEEP mode and bring mode. you a sound sleep.
  • Page 61 Exponent Operation For Smart Use of The Air Conditioner Timer On/Off On-Off Operation Set clock correctly before starting TIMER operation. Setting of proper room Do not block the air inlet 1.After unit starts, select your desired operation mode. temperature or outlet 2.Press TIMER button to change TIMER mode.
  • Page 62 Exponent Maintenance Replacement of Air Purifying Filter (NOTE: Air purifying filter is optional part) ATTENTION: 1.Open the lnlet Grille The white side of the photocatalyst air purifying Prop up the inlet grille by using a filter face outside,and the black side face the unit. small device named grille-support which located in the right side of The green side of the bacteria-killing medium air...
  • Page 63 Exponent 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 installation of the...

  • Page 64: Trouble Shooting

    Exponent Trouble shooting Cautions Before asking for service, check the following Do not obstruct or cover the ventilation grille of the air 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 Cause or check points Phenomenon...

  • Page 65: Installation Manual Of Room Air Conditioner

    Installation 8.Installation 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 66: Indoor Unit Installation

    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 first fixed direction to the mark of hole for left-rear piping which is marked on heat insulation materials.
  • Page 67 If wiring is not correct, proper operation can not be carried out and will cause defect. Indoor fan m otor F aulty connector c onnection; m alfunc tion F aulty therm istor; YJHMXH007BARR-FX YJHMXH009BARR-FX H eat-exc hange F aulty P C B ; Model YJHMXH012BARR-FX...
  • Page 68 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 -Electomagnetic CompatibilitY 89/336/EEC...
  • Page 69 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 15 cm Optional parts for piping...
  • Page 70 Installation WARNING CAUTION...

  • Page 71: 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 72 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. The old refrigerant and refrigerator oil in the existing piping If other types of valves are used, the vacuum pump oil will flow back into the refrigerant cycle and cause the refrigerator contain a large amount of chlorine, which will cause the refrigerator oil in the new unit to deteriorate.
  • Page 73 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 74: Read Before Installation

    Installation Read Before Installation Items to Be Checked (1). Verify the type of refrigerant used by the unit to be serviced. Refrigerant Type: R410A (2). Check the symptom exhibited by the unit to be serviced. Look in this service handbook for symptoms relating to the refrigerant cycle.
  • Page 75 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 76 Installation...
  • Page 77 Installation Air outlet Wind direction Cushion rubber 4.Installation dimension(Unit:mm) Model YJU2YH014BARRA-X 106.5 YJU2YH018BARRA-X 113.5 319.5...
  • Page 78 Installation YJU2YH014BARRA-X YJU2YH018BARRA-X 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 79 Installation Pressurize for over 3 minutes at 4.2MPa After above...
  • Page 80 Installation 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 81 YJU2YH014BARRA-X YJU2YH018BARRA-X 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 YJU2YH014BARRA-X YJU2YH018BARRA-X Outdoor unit B Outdoor unit B DOUBLE Connecting wiring 4G0.75mm To Indoor unit B To Indoor unit B DOUBLE Power cable...
  • Page 82 Installation 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...

  • Page 83: Removal Procedure

    Removal of procedure Domestic air conditioner...
  • Page 84 Removal of procedure Please embed the air filters into the unit along the grooves as installation. P l ease embed the two hooks on air filter com pletely into the unit during installat ion . Domestic air conditioner...
  • Page 85 Removal of procedure Remocal of 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. one side to another to release each axis.
  • Page 86 Removal of procedure HOOKS three Domestic air conditioner...
  • Page 87 Removal of procedure horizontal flap flap flap flap flap Domestic air conditioner...
  • Page 88 Removal of procedure Remove the swing Moter Remove the vertical blades Every blade go round and round,then move Domestic air conditioner...
  • Page 89 Removal of procedure Domestic air conditioner...
  • Page 90 Removal of procedure Domestic air conditioner...
  • Page 91 Removal of procedure Domestic air conditioner...
  • Page 92 Removal of procedure Domestic air conditioner...

  • Page 93: Removal Of Outdoor Panel

    Removal of procedure Outdoor Unit Removal of Outdoor Panel Domestic air conditioner...
  • Page 94 Removal of procedure Loosen the top panel screws Lift the top panel Domestic air conditioner...
  • Page 95 Removal of procedure Loosen the csrews and pull the panel Domestic air conditione...
  • Page 96 Removal of procedure 2 Pull the wind circle Remove the inlet grill Push the hooks first Domestic air conditioner...
  • Page 97 Removal of procedure Domestic air conditioner...
  • Page 98 Removal of procedure Domestic air conditioner...
  • Page 99 Removal of procedure Loosen the fixing screws and remove the motor Domestic air conditioner...
  • Page 100 Removal of procedure Domestic air conditioner...
  • Page 101 Removal of procedure Loosen the screw and remove the reactor Domestic air conditioner...
  • Page 102 Removal of procedure Loosen the marked screws and pull out the backgurd Domestic air conditioner...
  • Page 103 Removal of procedure Loosen the marked screws and remove the stop valves Loosen the marked screws and remove the stop valves bracket Domestic air conditioner...

  • Page 104: Wiring Diagrams

    Wring diagram 10. Wiring Diagrams INDOOR UNIT louver motor Romm Card Domestic Air Conditioner...
  • Page 105 Wring diagram Circuit Diagrams HTVSB7.0CA-100 NET_TX NET_RX PIPE ROOM Domestic Air Conditioner...
  • Page 106 Wring diagram 2 2 0 V _ L G N D Domestic Air Conditioner...
  • Page 107 Wring diagram Remarks DON'T TOUCH CAPACITOR, EVEN AFTER PLUG-OFF ( DANGER 1.the dotted parts are optional for OF ELECTRIC SHOCK) different unit. THE CAPACITOR RETAINS HIGH VOLTA GE EVEN AFTER THE PLUG-OFF.FOR 2.The components of main pcb boa rd is YOUR SAFETY,BE SURE TO WAIT AT L EAST 5 MINUTES.AFTER PLUG OFF AN D USE A TESTER TO CONFIRM THE VOLT AGE BETWEEN CONNECTOR fixed facing to the compressor .
  • Page 108 Wring diagram CN10 AC-LOUT AC-NOUT AC-NOUT AC-LOUT CN14 CN13 COM COM L FUSE1 PT C1 2U/450V T25A250VA C 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 AC-N AC-N RA-362M CN15 12V-5A-892H(N)-1A C-C...
  • Page 109 Wring diagram Outdoor unit 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 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 D206 C023 R222...
  • Page 110 The end...

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