Johnson Controls YJHJXH024BARR-FX Service Manual
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Johnson Controls YJHJXH024BARR-FX Service Manual

Johnson controls wall mounted type dc inverter ek&em-series
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SERVICE MANUAL

Order No.

Wall mounted Type

DC Inverter
EK&EM-Series
YJHJXH024BARR-FX
Model No.
YJHJYH024BARRA-X
indoor unit and remote controller

outdoor unit

WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death

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Summary of Contents for Johnson Controls YJHJXH024BARR-FX

  • Page 1: Service Manual

    SERVICE MANUAL Order No. Wall mounted Type DC Inverter EK&EM-Series YJHJXH024BARR-FX Model No. YJHJYH024BARRA-X indoor unit and remote controller outdoor unit WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public.

  • Page 2: Table Of Contents

    YJHJZH024BARRAFX-SM 1. Introduction..................... 1 2. List of Functions..................6 3. Specifications................... 7 4. Printed Circuit Board Connector Wiring Diagram......... 9 5. Functions and Control................14 5.1 Main functions and control specifications of indoor nit......14 5.2 The control system of outdoor unit............21 5.3 Value of thermistor...................
  • Page 3 YJHJZH024BARRAFX-SM 9.9 Removal of Outdoor panel..............102 9.10 Removal of Electrcal Box..............104 9.11 Removal of the Side panel..............105 9.12 Removal of Fan Motor................. 107 9.13 Removal of Compressor and Heat Exchanger........111 10. Wiring Diagrams................... 115 10.1 Indoor Unit................... 115 10.2 Outdoor Unit..................

  • Page 4: Introduction

    YJHJZH024BARRAFX-SM 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 5: Cautions Regarding Products After Repair

    YJHJZH024BARRAFX-SM 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 6 YJHJZH024BARRAFX-SM 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 7: Inspection After Repair

    YJHJZH024BARRAFX-SM 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 8 YJHJZH024BARRAFX-SM 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 9: List Of Functions

    YJHJZH024BARRAFX-SM Functions Category AS24GS1/2ERA 1U24GS1ERA 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 10: Specifications

    YJHJZH024BARRAFX-SM 3 Specification AS24GS1ERA AS24GS2ERA 6.80(2.2~7.0) 7.10(2.3~7.3) 6.80(2.2~7.0) 7.10(2.3~7.3) 23200(7500-23900) 23900(7850-24900) 23200(7500-23900) 23900(7850-24900) 6536(1032~8170) 6536(1032~8170) 5848(1892-6020) 5848(1892-6020) 2120(600~2150) 2120(600~2150) 1970(595~2000) 1970(595~2000) 3.21 3.21 φ 9.52 9.52 15.88 15.88 16.7 17.3 16.7 17.3 14.6 15.4 14.6 15.4 13.5 12.5 13.5 12.5 0.15 0.15 0.15...
  • Page 11 YJHJZH024BARRAFX-SM SNB130FGYM2 FV50S 0.50 R410a 1.60 51.7 51.7 1823.8 1823.8 2120 1970 860x308x730 995X420X815 48.2 52.2...

  • Page 12: Printed Circuit Board Connector Wiring Diagram

    YJHJZH024BARRAFX-SM Connector Wiring Diagram 4.Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors &RQQHFWRUV 3&%  &RQWURO 3&% )RU +80+&5 '% 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) CN32 Connector for display board...
  • Page 13 YJHJZH024BARRAFX-SM Connector Wiring Diagram 3&%  CN26 CN11 CN32 CN20 CON6 CON1 CON9 CON2 CON6 CON7 CN34 Domestic Air Conditioner...
  • Page 14 YJHJZH024BARRAFX-SM Connector Wiring Diagram 4.2: outdoor unit &RQQHFWRUV 3&%  &RQWURO 3&% 1) CN1,CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN6 CN7 Connector for terminal to indoor unit 4) CN25 Connector for DC POWER 15Vand 5V to the module board 5) CN9,CN10 Connector for CN2,CN1 on the module board 6) CN12 Connector for AC fan motor 7) CN11 Connector for four way valve coil...
  • Page 15 YJHJZH024BARRAFX-SM Connector Wiring Diagram 3&%  CN28 CN25 CN22 CN23 CN22 CN21 CN20 CN19 CN18 CN17 CN47 CN16 CN15 CN45 CN12 CN11 CN36 CN10 Domestic Air Conditioner...
  • Page 16 YJHJZH024BARRAFX-SM Connector Wiring Diagram 3&%  CN10 CN11 Domestic Air Conditioner...

  • Page 17: Functions And Control

    Function and Control YJHJZH024BARRAFX-SM )XQFLWLRQV DQG &RQWURO 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 18: Heating Operation Mode

    YJHJZH024BARRAFX-SM Function 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 opera te 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 19 YJHJZH024BARRAFX-SM Function and Control 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. 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 20 YJHJZH024BARRAFX-SM Function and Control Entering ‘mute’, you can have normal operation or signal control such as timing to finish the strength operation. When the system is at the automatic option ,There is no strength/ mute function,. 5.1.6 Mute operation the system enters the mode after receiving the ‘mute signal’. a.
  • Page 21 Function and Control YJHJZH024BARRAFX-SM temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 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.
  • Page 22 YJHJZH024BARRAFX-SM Function and Control malfunction 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 23 YJHJZH024BARRAFX-SM Function and Control according to the original status, the malfunction code will not be revealed or processed. WUDQVPLVVLRQ DEQRUPDOLW\ 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, Heating operation mode, 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...

  • Page 24: The Control System Of Outdoor Unit

    Function and Control YJHJZH024BARRAFX-SM heating signal to the outdoor system. Meanwhile, you can fix the indoor system at high speed mode, the location of the airflow directin board can be switched to the maximal position. c. Quitting condition: The fixed frequency heating can be quitted after receiving the remote signal, and the system will enter the remote setting status.
  • Page 25 YJHJZH024BARRAFX-SM Function and Control 58Hz,88Hz for one minute (the overheating protection of the outdoor unit air-blowing temperature, immediately decrease the frequency when the compressor is overflowing and releasing the pressure) then it can be operated towards the target frequency. When the machine runs normally, there’s no such process.
  • Page 26 YJHJZH024BARRAFX -SM Function and Control ΔT <1 >=4 The percentage of the 100% 120% 140% rated frequency P Heating mode ΔT <1 >=4 The percentage of the 100% 140% 140% rated frequency P K=∑Ki/the number of running machines The indoor set Breeze Medium High...
  • Page 27 YJHJZH024BARRAFX-SM Function and Control The temperature of the outdoor Airflow speed Ta 22 Ta<22 Keeping the speed Ta<22 Medium Ta<16 Keeping the speed Ta<14 High 5.2.3 The control of the outdoor electronic expansion valve When starting the compressor: the opening size of the valve must be guaranteed to have entered into the standard opening size, and then the compressor can be started.

  • Page 28: Protection Function

    YJHJZH024BARRAFX-SM Function and Control defrostings is 45 minutes (the time interval which is in 57 digits in EEPROM can be adjusted When the result of C×TA α is in the scope of C×TA α<-15 , the time interval between two defrostings is 65 minutes.
  • Page 29 YJHJZH024BARRAFX-SM Function and Control Increasing the frequency (1HZ/10second) Increasing the frequency 1HZ/1second TTC>=110 lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor, others don’t last. 5.2.6.2 TC high temperature-preventing control of the indoor heating unit Tpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with the running state).
  • Page 30 YJHJZH024BARRAFX-SM Function and Control frequency of the compressor increases at the speed of no faster than 0.1HZ/second. 5.2.6.4 The protection function of AC current: During the starting process of the compressor, if the AC current is greater than 10.5A, the frequency of the compressor decreases at the speed of 1HZ/second.
  • Page 31 YJHJZH024BARRAFX-SM Function and Control 5.2.6.6 The frequency limitation of modification rate In the field which is controlled by high frequency, if the modification rate is not high enough, the control-driven on chip will enter into weak magnetic control, this will help to relieve the problem of modification rate.

  • Page 32: Value Of Thermistor

    YJHJZH024BARRAFX-SM Function and Control 5.3 Value of Thermistor 5.3.1 intdoor Unit Room sensor and Pipe Sensor R25 =10KΩ±3% 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...
  • Page 33 YJHJZH024BARRAFX-SM Function and Control 50.8956 47.1666 43.6714 -1.54 1.44 48.3178 44.8454 41.5851 -1.51 1.42 45.8860 42.6525 39.6112 -1.49 1.40 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...
  • Page 34 YJHJZH024BARRAFX-SM Function and Control 7.2546 6.9673 6.6854 -1.06 1.04 6.9852 6.7008 6.4222 -1.10 1.07 6.7273 6.4459 6.1707 -1.13 1.11 6.4803 6.2021 5.9304 -1.17 1.14 6.2437 5.9687 5.7007 -1.21 1.18 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...
  • Page 35 YJHJZH024BARRAFX-SM Function and Control 1.6409 1.5051 1.3794 -2.97 2.75 1.5923 1.4592 1.3360 -3.02 2.80 1.5454 1.4149 1.2942 -3.07 2.84 1.5000 1.3721 1.2540 -3.12 2.88 1.4562 1.3308 1.2151 -3.17 2.93 1.4139 1.2910 1.1776 -3.22 2.97 1.3730 1.2525 1.1415 -3.27 3.01 1.3335 1.2153 1.1066 -3.32...
  • Page 36 YJHJZH024BARRAFX-SM Function and Control Ambient Sensor, Defrosting Sensor, Pipe sensor R25 =10KΩ±3% 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 124.3392 111.8256 -1.89 1.71 130.2371...
  • Page 37 YJHJZH024BARRAFX-SM Function and Control 19.1149 18.2270 17.3646 -1.08 1.05 18.2580 17.4331 16.6305 -1.06 1.03 17.4442 16.6782 15.9315 -1.03 1.01 16.6711 15.9601 15.2657 -1.01 0.99 15.9366 15.2770 14.6315 -0.98 0.96 15.2385 14.6268 14.0271 -0.96 0.94 14.5748 14.0079 13.4510 -0.93 0.92 13.9436 13.4185 12.9017 -0.91...
  • Page 38 YJHJZH024BARRAFX-SM Function and Control 3.4195 3.2085 3.0079 -1.91 1.82 3.3060 3.0989 2.9021 -1.95 1.85 3.1969 2.9935 2.8005 -2.00 1.89 3.0919 2.8922 2.7029 -2.04 1.93 2.9909 2.7948 2.6092 -2.08 1.97 2.8936 2.7012 2.5193 -2.13 2.01 2.8000 2.6112 2.4328 -2.17 2.05 2.7099 2.5246 2.3498 -2.22...
  • Page 39 YJHJZH024BARRAFX-SM Function and Control 0.8983 0.8088 0.7275 -4.07 3.69 0.8741 0.7863 0.7067 -4.12 3.74 0.8507 0.7646 0.6867 -4.18 3.78 0.8281 0.7436 0.6672 -4.23 3.83 0.8061 0.7233 0.6484 -4.29 3.88 0.7848 0.7036 0.6303 -4.34 3.92 0.7641 0.6845 0.6127 -4.40 3.97 0.7441 0.6661 0.5957 -4.46...
  • Page 40 YJHJZH024BARRAFX-SM Function and Control 4738.4141 4032.7098 3429.0191 -2.73 2.34 4451.4586 3795.3910 3233.1039 -2.72 2.33 4183.5548 3573.4260 3049.5312 -2.70 2.32 3933.3289 3365.7336 2877.4527 -2.69 2.31 3699.5139 3171.3148 2716.0828 -2.67 2.30 3480.9407 2989.2460 2564.6945 -2.66 2.29 3276.5302 2818.6731 2422.6139 -2.64 2.28 3085.2854 2658.8058 2289.2164 -2.63...
  • Page 41 Function and Control YJHJZH024BARRAFX-SM 420.1431 383.7151 350.1301 -1.97 1.81 400.3242 366.1295 334.5542 -1.95 1.80 381.5350 349.4341 319.7460 -1.93 1.78 363.7176 333.5801 305.6645 -1.90 1.76 346.8176 318.5216 292.2709 -1.88 1.75 330.7839 304.2151 279.5286 -1.86 1.73 315.5682 290.6199 267.4031 -1.84 1.71 301.1254 277.6976 255.8620 -1.82...
  • Page 42 YJHJZH024BARRAFX-SM Function and Control 62.3423 60.1906 58.0609 -0.95 0.94 59.9821 57.9770 55.9885 -0.92 0.92 57.7223 55.8552 53.9998 -0.90 0.89 55.5583 53.8210 52.0912 -0.87 0.87 53.4856 51.8706 50.2591 -0.85 0.84 51.5000 50.0000 48.5000 -0.85 0.84 49.7063 48.2057 46.7083 -0.85 0.85 47.9835 46.4842 44.9911 -0.89...
  • Page 43 YJHJZH024BARRAFX-SM Function and Control 14.5599 13.5942 12.6811 -2.36 2.23 14.1376 13.1879 12.2909 -2.41 2.27 13.7294 12.7955 11.9144 -2.45 2.31 13.3347 12.4165 11.5510 -2.50 2.35 12.9531 12.0503 11.2003 -2.54 2.39 12.5840 11.6965 10.8617 -2.58 2.43 12.2270 11.3545 10.5348 -2.63 2.47 11.8817 11.0240 10.2191 -2.68...

  • Page 44: System Configuration

    YJHJZH024BARRAFX-SM 6.2.1 The Instruction For AS24GS1ERA...
  • Page 45 System Configration YJHJZH024BARRAFX-SM POWER/SOFT button is not available for 07k 09k 12k. Domestic Air Conditioner...

  • Page 46: Test Operation

    System Configration YJHJZH024BARRAFX-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 47: Sleep Operation

    YJHJZH024BARRAFX-SM Introduction Operation Sleep Operation In AUTO mode The unit operaters in corresponding sleep mode adapted to the automatically selected operation Before going to bed,you can simply press the SLEEP mode. button and unit will operate in SLEEP mode and bring 4.
  • Page 48 YJHJZH024BARRAFX-SM Introduction parliament, herewith we inform the consumer about the dis- Operation posal requirements of the electrical and electronic products. DISPOSAL REQUIREMENTS: Timer On/Off On-Off Operation Your air conditioning product is marked with this symbol.This means that electrical and electronic Set clock correctly before starting TIMER operation.

  • Page 49: Indoor Unit Installaion

    YJHJZH024BARRAFX-SM Introduction Indoor Unit Installaion Necessary Tools for Installation Power Source Torque wrench Driver Before inserting power into receptacle, check the voltage (17mm,22mm,26mm) Nipper without 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: Indoor Unit Installation

    YJHJZH024BARRAFX-SM Introduction Indoor Unit Installation 1. Insert the drain hose into the dent of heat insulation materials of Fitting of the Mounting Plate and Positioning of the wall Hole indoor unit. 2. Insert the indoor/outdoor electric cable from backside of indoor unit, and pull it out on the front side, then connect them.
  • Page 51 YJHJZH024BARRAFX-SM Introduction 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 flare Crack Partial Too outside hole, in which the pipe has already existed. 2.
  • Page 52 YJHJZH024BARRAFX-SM Introduction 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 53 YJHJZH024BARRAFX-SM Introduction 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 54: Trouble Shooting

    YJHJZH024BARRAFX-SM Introduction 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 Phenomenon Cause or check points...

  • Page 55: Remote Controller

    YJHJZH024BARRAFX-SM Introduction 6.2.2 The Instruction For AS24GS2ERA Remote controller Indoor Unit Additional functions display Supplemented electrical Operation mode QUITE SLEEP HEALTH POWER heating Inlet Air Purifying Filter Remote controller (inside) 9. QUIET button 10. HEAT button 11. COOL button Inlet grille 12.

  • Page 56: Emergency Operation

    YJHJZH024BARRAFX-SM Introduction Operation Base Operation Emergency operation and test operation Emergency Operation: Use this operation only when the remote controller is defective or lost, and with function of emergency running, air conditoner Remote controller can run automatically for a while. When the emergency operation switch is pressed, the "...

  • Page 57: Sleep Operation

    Introduction YJHJZH024BARRAFX-SM 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 58: Healthy Airflow Operation

    Introduction YJHJZH024BARRAFX-SM 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 59 YJHJZH024BARRAFX-SM Introduction Indoor Unit Installaion Necessary Tools for Installation Power Source ● Torque wrench ● Driver ● Before inserting power into receptacle, check the voltage (17mm,22mm,26mm) ● Nipper without fail. ● Pipe cutter ● Hacksaw ● The power supply is the same as the corresponding nameplate. ●...
  • Page 60 Introduction YJHJZH024BARRAFX-SM 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...
  • Page 61 YJHJZH024BARRAFX-SM Introduction 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 flare Crack Partial Too outside hole, in which the pipe has already existed. 2.
  • Page 62 YJHJZH024BARRAFX-SM Introduction 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 63 YJHJZH024BARRAFX-SM Introduction 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 64 Introduction YJHJZH024BARRAFX-SM 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 Phenomenon Cause or check points...

  • Page 65: Error Codes And Description

    YJHJZH024BARRAFX-SM Service Diagnosis 7 Service Diagnosis 7.1 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 66 YJHJZH024BARRAFX-SM Service Diagnosis 7.3.Error Codes and Description indoor display Code indication Reference Outdoor Description Page indoor (LED1 flash times) Indoorand Outdoor Communication fault between indoor and Page .72 outdoor units Room temperature sensor failure Page .64 Indoor Malfunction Heat-exchange sensor failure Page .64 Indoor EEPROM error Page .71...
  • Page 67 Service Diagnosis YJHJZH024BARRAFX-SM 7.3.1Thermistor or Related Abnormality (indoor unit) (: Room temperature sensor failure ,QGRRU 'LVSOD\ (: Heat-exchange sensor failure 0HWKRG RI the temperatures detected by the thermistors are used to determine thermistor errors 0DOIXQFWLRQ 'HWHFWLRQ 0DOIXQFWLRQ when the thermistor input is more than 4.92V or less than 0.08V during compressor 'HFLVLRQ operation.
  • Page 68 YJHJZH024BARRAFX-SM Service Diagnosis 7.4.2 Indoor fan motor malfunction ,QGRRU 'LVSOD\ 0HWKRG RI The rotation speed detected by the Hall IC during fan motor operation is used to determine 0DOIXQFWLRQ abnormal fan motor operation 'HWHFWLRQ 0DOIXQFWLRQ when the detected rotation feedback singal don’t receiced in 2 minutes 'HFLVLRQ &RQGLWLRQV 6XSSRVHG &DXVHV...

  • Page 69: Ipm Protection

    YJHJZH024BARRAFX-SM 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 motor connector,then turn power ON Does it rotate? Check output of fan motor connector I s m o t o r p o w e r v o l t a g e D C 3 1 0 V...
  • Page 70 YJHJZH024BARRAFX-SM Service Diagnosis RXWGRRU GLVSOD\ LED1 flash 2 times: ,QGRRU 'LVSOD\ ) 0HWKRG RI IPM protection is detected by checking the compressor running condition and so on. 0DOIXQFWLRQ 'HWHFWLRQ 0DOIXQFWLRQ The system leads to IPM protection due to over current 'HFLVLRQ The compressor faulty leads to IPM protection &RQGLWLRQV...
  • Page 71 YJHJZH024BARRAFX-SM Service Diagnosis 7.3.4 The IPM and outdoor PCB don’t communicate or Related Abnormality RXWGRRU GLVSOD\ LED1 flash 4 times Indoor Display 0HWKRG RI Communication is detected by checking the IPM module and the outdoor PCB 0DOIXQFWLRQ 'HWHFWLRQ 0DOIXQFWLRQ The outdoor PCB broken leads to communication fault 'HFLVLRQ The IPM module broken leads to communication fault &RQGLWLRQV...
  • Page 72 YJHJZH024BARRAFX-SM Service Diagnosis 7.3.5 Thermistor or Related Abnormality(outdoor unit) )URVWUHPRYLQJ WHPSHUDWXUH VHQVRU IDLOXUH ,QGRRU GLVSOD\ RXWGRRU GLVSOD\ LED1 flash 10 times: ([KDXVW WHPSHUDWXUH VHQVRU IDLOXUH ,QGRRU GLVSOD\: RXWGRRU GLVSOD\: LED1 flash 13 times: $PELHQW WHPSHUDWXUH VHQVRU IDLOXUH ,QGRRU GLVSOD\: RXWGRRU GLVSOD\: LED1 flash 12 times: 0HWKRG RI This type of error is detected by checking the thermistor input voltage to the microcomputer.
  • Page 73 YJHJZH024BARRAFX-SM Service Diagnosis 7.3.6 Overheat Protection For Exhaust Temperature ,QGRRU GLVSOD\ RXWGRRU GLVSOD\ LED1 flash 8 times 0HWKRG RI the exhaust temperature control is checked with the temperature being detected 0DOIXQFWLRQ by the exhaust pipe thermistor 'HWHFWLRQ 0DOIXQFWLRQ when the compressor discharge temperature is above 117 'HFLVLRQ &RQGLWLRQV 6XSSRVHG...
  • Page 74 YJHJZH024BARRAFX-SM Service Diagnosis Pull out the exhaust sensor and measure its The sensor is damaged. Replace the sensor resistance standard temperatures with a new one. according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.

  • Page 75: Communication Error Between The Indoor And Outdoor Units

    YJHJZH024BARRAFX-SM Service Diagnosis 7.3.8 Communication error between the indoor and outdoor units ,QGRRU GLVSOD\ 2XWGRRU: GLVSOD\ LED1 flash 15 times 0HWKRG RI The date received from the another unit in indoor unit-outdoor unit signal transmission is 0DOIXQFWLRQ checked whether is normal Detection Malfunction When the date sent from the another unit cannot be received normally,or when the content...
  • Page 76 YJHJZH024BARRAFX-SM Service Diagnosis Check the status of LED1 on the indoor mainboard. If the LED1 blinks measure voltage between Jumpers 3 and 4 of IC8 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
  • Page 77 YJHJZH024BARRAFX-SM Service Diagnosis 7.3.10 Power Supply Over or under voltagve fault ,QGRRU GLVSOD\ RXWGRRU GLVSOD\ LED1 flash 6 times 0HWKRG RI An abnormal voltage rise or fall is detected by checking the specified voltage detection FLUFXLW 0DOIXQFWLRQ 'HWHFWLRQ 0DOIXQFWLRQ An voltage signal is fed from the voltage detection circuit to the microcomputer 'HFLVLRQ &RQGLWLRQV 6XSSRVHG...

  • Page 78: Loop Of The Station Detect Error

    Service Diagnosis YJHJZH024BARRAFX-SM 7.3.11 Loop of the station detect error 2XWGRRU 'LVSOD\ /(' IODVK  WLPHV ,QGRRU 'LVSOD\ /(' IODVK  WLPHV ,QGRRU 'LVSOD\ 0HWKRG RI the position of the compressor rotor can not detected normally 0DOIXQFWLRQ 'HWHFWLRQ 0DOIXQFWLRQ when the The wiring of compressor is wrong or the connection is poor; 'HFLVLRQ RU the compressor is damaged &RQGLWLRQV...
  • Page 79 Service Diagnosis YJHJZH024BARRAFX-SM 7.3.12 Over-current of the compressor 2XWGRRU 'LVSOD\ LED1 flash 3 or 24 or 25 times 0HWKRG RI The current of the compressor is too high 0DOIXQFWLRQ 'HWHFWLRQ 0DOIXQFWLRQ when the IPM Module is damaged 'HFLVLRQ RU the compressor is damaged &RQGLWLRQV power supply.

  • Page 80: Installations

    Installation YJHJZH024BARRAFX-SM 8 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 81 Installation YJHJZH024BARRAFX-SM 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 82 YJHJZH024BARRAFX-SM Installation WARNING CAUTION Domestic air conditioner...
  • Page 83 Installation YJHJZH024BARRAFX-SM Domestic air conditioner...
  • Page 84 YJHJZH024BARRAFX-SM Installation 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 flow back into the refrigerant cycle and cause the refrigerator contain a large amount of chlorine, which will cause the oil to deteriorate.
  • Page 85 Installation YJHJZH024BARRAFX-SM 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 86 YJHJZH024BARRAFX-SM Installation Domestic air conditioner...
  • Page 87 YJHJZH024BARRAFX-SM Installation Domestic air conditioner...
  • Page 88 YJHJZH024BARRAFX-SM Installation Domestic air conditioner...
  • Page 89 Installation YJHJZH024BARRAFX-SM Air outlet Wind direction Cushion rubber 4.Installation dimension(Unit:mm) Domestic air conditioner...
  • Page 90 AA96S2E0B Installation YJHJZH024BARRAFX-SM 1U07BS1ERA 1U09BS1ERA 1U12BS1ERA 1U18FS1ERA 1U24GS1ERA 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.
  • Page 91 YJHJZH024BARRAFX-SM Installation Domestic air conditioner...
  • Page 92 YJHJZH024BARRAFX-SM Installation (e.g.1U18FS1ERA) Domestic air conditioner...
  • Page 93 Installation YJHJZH024BARRAFX-SM 1U07BS1ERA 1U09BS1ERA 1U12BS1ERA 1U18FS1ERA 1U24GS1ERA T 25A/250V. FOR 18K 24K FOR 07K 09K 12K Outdoor unit Outdoor unit 1U07BS1ERA Model 1U09BS1ERA 1U18FS1ERA 1U24GS1ERA To Indoor unit 1U12BS1ERA To Indoor unit Connecting wiring 4G0.75mm 4G0.75mm 4G0.75mm POWER Power cable 3G1.5mm 3G2.5mm 3G4.0mm...

  • Page 94: Outdoor Unit Troubleshooting

    Installation YJHJZH024BARRAFX-SM Outdoor Unit Troubleshooting 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 95: Removal Procedure

    Removal of procedure YJHJZH024BARRAFX-SM 9 Removal of Procedure 9.1 Removal of Front panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step 1. Remove the front panel. Open the front panel to the horizontal position.

  • Page 96: Removal Of Air Filter

    Removal of procedure YJHJZH024BARRAFX-SM Step Lift an air filter upwards slightly and then pull it out downwards. Insert the air filters along grooves when installing. When installing, insert 2 hooks of the air filter completely. Domestic air conditioner...

  • Page 97: Removal Of Horiaontal Blade And Front Grill

    Removal of procedure YJHJZH024BARRAFX-SM 9.3 Removal of Horizontal Blade and Front Grill Step Loosen the marked f ive screws Release the marked four hooks. When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught prop erly.
  • Page 98 YJHJZH024BARRAFX-SM Removal of procedure Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 2. Remove the horizontal The horizontal blade is blade. single. Release the center pivot. blade Installation procedure 1.

  • Page 99: Removal Of Drain Pan

    YJHJZH024BARRAFX-SM Removal of procedure Procedure Points Step Pull the front grille out horizontally and remove When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught properly. Domestic air conditioner...
  • Page 100 Removal of procedure YJHJZH024BARRAFX-SM 9.4 Removal of Drain Pan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the front grille. Remove the assembly of the reduction motor. 1.

  • Page 101: Removal Of Vertical Blades And Swing Motor

    Removal of procedure YJHJZH024BARRAFX-SM 9.5 Removal of Vertical Blade and Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the marked screws Push the hooks on the back of the vertical blades and remove.

  • Page 102: Removal Of Electrical Box

    Removal of procedure YJHJZH024BARRAFX-SM 9.6 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.

  • Page 103: Removal Of Heat Exchanger

    Removal of procedure YJHJZH024BARRAFX-SM 9.7 Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points You can detach the indoor unit without removing the assembly of the outlet grille.

  • Page 104: Removal Of Fan Rotor And Fan Motor

    Removal of procedure YJHJZH024BARRAFX-SM 9.8 Removal of Fan and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the 6 screws. Remove the right side plate.

  • Page 105: Removal Of Outdoor Panel

    Removal of procedure YJHJZH024BARRAFX-SM 9.9 Removal of Outdoor panel Step Procedure Points 1. Features Loosen the service Be careful not to cover screw and remove the service cover. Domestic air conditioner...
  • Page 106 AA99P2E0B AA99P2E0B YJHJZH024BARRAFX-SM Removal of procedure Step Procedure Points 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 107 Removal of procedure YJHJZH024BARRAFX-SM 9.10 Romoval of Electrcal Box Step Procedure Points screws, then lift the electrical box Domestic air conditioner...
  • Page 108 Removal of procedure YJHJZH024BARRAFX-SM 9.11 Romoval of the Side panel Step Procedure Points screws and remove the side panel. Domestic air conditioner...
  • Page 109 YJHJZH024BARRAFX-SM Removal of procedure Step Procedure Points Remove the screws and remove the side panel. Domestic air conditioner...

  • Page 110: Removal Of Fan And Fan Motor

    Removal of procedure YJHJZH024BARRAFX-SM 9.12 Removal of fan and fan motor Step Procedure Points Put the lead wire Loosen the of motor when remove the fan the propeller fan) Domestic air conditioner...
  • Page 111 YJHJZH024BARRAFX-SM Removal of procedure Step Procedure Points screws and lift the fan motor. Domestic air conditioner...
  • Page 112 Removal of procedure YJHJZH024BARRAFX-SM Step Procedure Points screws, then lift the Domestic air conditioner...
  • Page 113 YJHJZH024BARRAFX-SM Removal of procedure Step Procedure Points screws, then lift the proof plate. Domestic air conditioner...
  • Page 114 Removal of procedure YJHJZH024BARRAFX-SM Step Procedure Points Cut down the and pull out the compressor and remove the Domestic air conditioner...
  • Page 115 YJHJZH024BARRAFX-SM Removal of procedure Step Procedure Points Domestic air conditioner...
  • Page 116 Removal of procedure YJHJZH024BARRAFX-SM Step Procedure Points Domestic air conditioner...
  • Page 117 Removal of procedure YJHJZH024BARRAFX-SM Step Procedure Points Remove the Domestic air conditioner...

  • Page 118: Wiring Diagrams

    :LULQJ 'LDJUDPV YJHJZH024BARRAFX-SM 10.Wiring Diagrams 10..1. Indoor unit Domestic Air Conditioner...

  • Page 119: Outdoor Unit

    YJHJZH024BARRAFX-SM 10.2.Outdoor unit Domestic Air Conditioner...

  • Page 120: Circuit Diagrams

    &LUFXLW 'LDJUDPV YJHJZH024BARRAFX-SM 11.Circuit Diagrams 11.1.Indoor unit CN32' CN32'' urgent switch Note3 R53,R6,R16,R18,R17,R21 EEPROM Comment: 10K select accoding to diaplay SRCK SWITCH For change 0.1uF JTP1288LA Comment: 1K write online SW1' Comment: 0.1uF CHECK/S_TIME TSVC-1 TEST DIGH CN48 MODE DIGL 0.1uF MODE TJC8-02...
  • Page 121 &LUFXLW 'LDJUDPV YJHJZH024BARRAFX-SM 11.2.Outdoor unit 11.2.1 Control Board Circuit Diagrams CN10 CN48 CN49 4-WAY VALVE 2-SPEED-AC-MOTOR AC-L OUT AC-N OUT AC-N OUT AC-L OUT Comment: HEAT1 HEAT2 3-SPEED-AC-MOTOR CN14 CN13 FUSE1 PTC1 T1A/250V AC-L 2U/450V FUSE2 T25A 250VAC 470N AC-L AC-N S14K350 225/275V...
  • Page 122 R :13%, G :12%, B :12%, a:100% R :13%, G :12%, B :12%, a:100% &LUFXLW 'LDJUDPV YJHJZH024BARRAFX-SM CN26 250 Connector 220K/2W 105/275VAC 680U/400V/450V 680U/400V/450V LED2 POWER 250 Connector CN24 11.2.2 Module Board Circuit Diagram 5. 2MH/15A D207 FFA30U60DN PS21965-AT C405 C404 C406 AC -L...
  • Page 123 YJHJZH024BARRAFX-SM The end...

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