Page 1: Service Manual
Commercial Air Conditioning SERVICE MANUAL Inverter R410a 50/60HZ Models Indoor: YHKJXH012BAM--FX YHKJXH018BAM--FX YHKJXH024BAR--FX YHKJXH028BAR--FX YHKJXH036BAR--FX YHKJXH048BAR--FX YHKJXH048BAR--FX YHKJXH060BAR--FX YHFJXH012BAM--FX YHFJXH018BAM--FX YHFJXH024BAR--FX YHFJXH028BAR--FX YHFJXH036BAR--FX YHFJXH048BAR--FX YHFJXH048BAR--FX YHFJXH060BAR--FX YHDJXH012BAM--GX YHDJXH018BAM--GX YHDJXH024BAR--GX YHEJXH024BAR--GX YHEJXH028BAR--GX YHEJXH036BAR--GX YHEJXH048BAR--GX YHEJXH048BAR--GX YHGJXH048BAR--GX YHGJXH048BAR--GX YHGJXH060BAR--GX YHUJYH024BAR-A-X Outdoor: YHUJYH028BAR-A-X...
Page 2: Table Of Contents
CONTENTS Contents………………………………………………………..2 1. Description of products & features…………………………..3 2. Specification…………………………………………………...5 3. Dimensions…………………………………………………..33 4. Pipe and wiring installation…..……………………………...40 5. PCB photo, wiring diagram and function description……..92 6. Diagnostic code and troubleshooting.…………………….122 7. Outdoor performance curves………..……………………..128 8. Indoor air velocity and temperature distribution curves..133 9.
Page 3: Description Of Products & Features
1.Description of products & features 1.1 Brief Introduction for T1 working condition Climate type Type of Conditioner Cooling Only 18 ~ Heat Pump Electricity Heating 1.2 Operating Range of Air Conditioners Working temperature range rated maximum minimum Cooling — 14.5 —...
Page 4 1.3 Product features Super match By integrating intelligential technology of Haier A/C group, super match air conditioner, with universal indoor and outdoor units, make more intelligent and flexible choices on purchasing, easier inventory management to every customer. Good for choice Multi-choice of capacity and appearance of indoor unit according to various rooms.
Page 5: Specification
2.Specification Unit YHKJZH012BAM-AFX YHKJZH018BAM-AFX Outdoor YHUJYH012BAM-A-X YHUJYH018BAM-A-X Model name YORK Indoor YHKJXH012BAM--FX YHKJXH018BAM--FX Power supply V/Ph/Hz 230/1/50 230/1/50 Capacity kW(min~max) 3.5(0.9~4.5) 4.8(1.8~5.8) Input W(min~max) 1080(280~1650) 1490(550~2000) Rated Cooling Rated current 3.24 3.22 SEER Capacity Btu/h 12371.4 17375 Input W(min~max) 995(280~1650)
Page 6 Unit YHKJZH012BAM-AFX YHKJZH018BAM-AFX Model name YORK Outdoor YHUJYH012BAM-A-X YHUJYH018BAM-A-X Indoor YHKJXH012BAM--FX YHKJXH018BAM--FX Number of row Fin spacing 1.75 1.41 Fin material Hydrophilic Aluminium Hydrophilic Aluminium Outdoor coil Tube outside diameter 9.52 Tube material Inner Grooved copper tube Inner Grooved copper tube Coil length x height x width 793 x43.3x550...
Page 7 Unit YHKJZH024BAR-AFX YHKJZH028BAR-AFX Model name YORK Outdoor YHUJYH024BAR-A-X YHUJYH028BAR-A-X Indoor YHKJXH024BAR--FX YHKJXH028BAR--FX Power supply V/Ph/Hz 230/1/50(60) 230/1/50(60) Capacity kW(min~max) 6.9(1.8 7.5) 7.8(2.0 8.7) Input W(min~max) 2225(500 2600) 2590(500 3800) Rated Cooling Rated current 10.8 3.01 SEER 5.217391304 5.239130435 Capacity Btu/h...
Page 8 Unit YHKJZH024BAR-AFX YHKJZH028BAR-AFX Model name YORK Outdoor YHUJYH024BAR-A-X YHUJYH028BAR-A-X Indoor YHKJXH024BAR--FX YHKJXH028BAR--FX Number of row Fin spacing 1.65 Fin material Hydrophilic Aluminium Hydrophilic Aluminium Outdoor coil Tube outside diameter 7.94 7.94 Tube material Inner Grooved copper tube Inner Grooved copper tube Coil length x height x width 840 x39.9x700...
Page 9 Unit YHKJZH036BAR-AFX YHKJZH048BAR-AFX Model name YORK Outdoor YHUJYH036BAR-A-X YHUJYH048BAR-A-X Indoor YHKJXH036BAR--FX YHKJXH048BAR--FX Power supply V/Ph/Hz 230/1/50(60) 230/1/50(60) Capacity kW(min~max) 9.3(2.0 10.3) 12.1(6.0 13.8) Input W(min~max) 3000(500 3800) 4115(2000 6000) Rated Cooling Rated current 12.87 3.097826087 2.94 SEER 5.347826087 Capacity Btu/h 32030.55...
Page 10 Unit YHKJZH036BAR-AFX YHKJZH048BAR-AFX Model name YORK Outdoor YHUJYH036BAR-A-X YHUJYH048BAR-A-X Indoor YHKJXH036BAR--FX YHKJXH048BAR--FX Number of row Fin spacing 1.55 Fin material Hydrophilic Aluminium Hydrophilic Aluminium Outdoor coil Tube outside diameter 7.94 Tube material Inner Grooved copper tube Inner Grooved copper tube Coil length x height x width 960 x39.9x792...
Page 11 Unit YHKJZH048BAS-AFX YHKJZH060BAS-AFX Model name YORK Outdoor YHUJYH048BAS-A-X YHUJYH060BAS-A-X Indoor YHKJXH048BAR--FX YHKJXH060BAR--FX Power supply V/Ph/Hz 400/3/50(60) 400/3/50(60) Capacity kW(min~max) 12.1(6.0 13.8) 14.4(3.7 15.1) Input W(min~max) 4296(2000 6000) 5124(2000 6500) Rated Cooling Rated current 2.815217391 2.81 SEER Capacity Btu/h 42304.5 52507.35...
Page 12 Unit Model name YORK Outdoor Indoor Hydrophilic Aluminium Hydrophilic Aluminium Number of row 7.94 7.94 Fin spacing Inner Grooved copper tube Inner Grooved copper tube Fin material 792x38.1x995 970x38.1x1200 Outdoor coil Tube outside diameter Tube material Rotary Rotary Coil length x height x width 33718.464...
Page 13 Unit YHFJZH012BAM-AFX YHFJZH018BAM-AFX model YORK Outdoor YHUJYH012BAM-A-X YHUJYH018BAM-A-X Indoor YHFJXH012BAM--FX YHFJXH018BAM--FX Power supply V/Ph/Hz 230/1/50 230/1/50 Capacity Btu/h 12286 17064 Capacity kW(min ～ max) 3.6(0.9 ～ 4.5) 5.0(1.7 ～ 5.3) Input W(min ～ max) 1118(280 ～ 1650) 1500(550 ～ 2000)
Page 14 Unit YHFJZH012BAM-AFX YHFJZH018BAM-AFX model YORK Outdoor YHUJYH012BAM-A-X YHUJYH018BAM-A-X Indoor YHFJXH012BAM--FX YHFJXH018BAM--FX Input Output O u t d o o r f a n motor Running current 0.25 Speed Outdoor air flow m3/h 1900 2200 Outdoor noise level (Sound power level)
Page 15 Unit YHFJZH024BAR-AFX YHFJZH028BAR-AFX model YORK Outdoor YHUJYH024BAR-A-X YHUJYH028BAR-A-X Indoor YHFJXH024BAR--FX YHFJXH028BAR--FX Power supply V/Ph/Hz 230/1/50(60) 230/1/50(60) Capacity Btu/h 21842 26620 Capacity kW(min ～ max) 6.4(1.8 ～ 6.7) 7.8(1.9 ～ 9.2) Input W(min ～ max) 2216(500 ～ 2600) 2475(500 ～ 2600)
Page 16 Unit YHFJZH024BAR-AFX YHFJZH028BAR-AFX model YORK Outdoor YHUJYH024BAR-A-X YHUJYH028BAR-A-X Indoor YHFJXH024BAR--FX YHFJXH028BAR--FX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 3000 3500 Outdoor noise level (Sound power level) dB(A)
Page 17 Unit YHFJZH036BAR-AFX YHFJZH048BAR-AFX model YORK Outdoor YHUJYH036BAR-A-X YHUJYH048BAR-A-X Indoor YHFJXH036BAR--FX YHFJXH048BAR--FX Power supply V/Ph/Hz 230/1/50(60) 230/1/50(60) Capacity Btu/h 31739 42000 Capacity kW(min ～ max) 9.3(2.0 ～ 10.1) 12.3(5.5 ～ 13.3) Input W(min ～ max) 2982(500 ～ 2800) 3975(2000 ～ 6000)
Page 18 Unit YHFJZH036BAR-AFX YHFJZH048BAR-AFX model YORK Outdoor YHUJYH036BAR-A-X YHUJYH048BAR-A-X Indoor YHFJXH036BAR--FX YHFJXH048BAR--FX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 3500 4200 Outdoor noise level (Sound power level) dB(A)
Page 19 Unit YHFJZH048BAS-AFX YHFJZH060BAS-AFX model YORK Outdoor YHUJYH048BAS-A-X YHUJYH060BAS-A-X Indoor YHFJXH048BAR--FX YHFJXH060BAR--FX Power supply V/Ph/Hz 400/3/50(60) 400/3/50(60) Capacity Btu/h 42000 50552 Capacity kW(min ～ max) 12.3(5.5 ～ 13.3) 14.8(3.7 ～ 15.1) Input W(min ～ max) 4040(2000 ～ 6000) 5028(2000 ～ 6500)
Page 20 Unit YHFJZH048BAS-AFX YHFJZH060BAS-AFX model YORK Outdoor YHUJYH048BAS-A-X YHUJYH060BAS-A-X Indoor YHFJXH048BAR--FX YHFJXH060BAR--FX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 4200 6500 Outdoor noise level (Sound power level) dB(A)
Page 21 Unit YHDJZH012BAM-AGX YHDJZH018BAM-AGX Model name YORK Outdoor YHUJYH012BAM-A-X YHUJYH018BAM-A-X Indoor YHDJXH012BAM--GX YHDJXH018BAM--GX Power supply V/Ph/Hz 230/1/50 230/1/50 Capacity Btu/h 11945 17064 Capacity kW(min max) 3.5(0.8 4.1) 5.0(1.7 5.5) Input W(min max) 1080(280 1650) 1553(550 2100) Rated Cooling Rated current 3.24 3.22...
Page 22 Unit YHDJZH012BAM-AGX YHDJZH018BAM-AGX model YORK Outdoor YHUJYH012BAM-A-X YHUJYH018BAM-A-X Indoor YHDJXH012BAM--GX YHDJXH018BAM--GX Input Output O u t d o o r f a n motor Running current 0.25 Speed Outdoor air flow m3/h 1900 2200 Outdoor noise level (Sound power level)
Page 23 Unit YHDJZH024BAR-AGX YHEJZH024BAR-AGX Model name YORK Outdoor YHUJYH024BAR-A-X YHUJYH024BAR-A-X Indoor YHDJXH024BAR--GX YHEJXH024BAR--GX Power supply V/Ph/Hz 220/1/50(60) 230/1/50(60) Capacity Btu/h 24231 24231 Capacity kW(min max) 7.1(1.8 7.5) 7.1(1.8 7.5) Input W(min max) 2180(600 2600) 2158(600 2600) Rated Cooling Rated current 3.25 3.29...
Page 24 Unit YHDJZH024BAR-AGX YHEJZH024BAR-AGX model YORK Outdoor YHUJYH024BAR-A-X YHUJYH024BAR-A-X Indoor YHDJXH024BAR--GX YHEJXH024BAR--GX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 3000 3000 Outdoor noise level (Sound power level) dB(A)
Page 25 Unit YHEJZH028BAR-AGX YHEJZH036BAR-AGX Model name YORK Outdoor YHUJYH028BAR-A-X YHUJYH036BAR-A-X Indoor YHEJXH028BAR--GX YHEJXH036BAR--GX Power supply V/Ph/Hz 230/1/50(60) 230/1/50(60) Capacity Btu/h 27693 32080 Capacity kW(min max) 8.1(1.9 9.0) 9.4(2.0 10.1) Input W(min max) 2691(500 3800) 3175(500 3800) Rated Cooling Rated current 14.3 3.01...
Page 26 Unit YHEJZH028BAR-AGX YHEJZH036BAR-AGX model YORK Outdoor YHUJYH028BAR-A-X YHUJYH036BAR-A-X Indoor YHEJXH028BAR--GX YHEJXH036BAR--GX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 3500 3500 Outdoor noise level (Sound power level) dB(A)
Page 27 Unit YHEJZH048BAR-AGX YHEJZH048BAS-AGX Model name YORK Outdoor YHUJYH048BAR-A-X YHUJYH048BAS-A-X Indoor YHEJXH048BAR--GX YHEJXH048BAR--GX Power supply V/Ph/Hz 230/1/50(60) 400/3/50(60) Capacity Btu/h 41636 41295 Capacity kW(min max) 12.2(5.6 13.6) 12.1(5.6 13.6) Input W(min max) 4340(2000 6000) 4285(2000 6000) Rated Cooling Rated current 18.5 2.81...
Page 28 Unit YHEJZH048BAR-AGX YHEJZH048BAS-AGX model YORK Outdoor YHUJYH048BAR-A-X YHUJYH048BAS-A-X Indoor YHEJXH048BAR--GX YHEJXH048BAR--GX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 4200 4200 Outdoor noise level (Sound power level) dB(A)
Page 29 Unit YHGJZH048BAR-AGX YHGJZH048BAS-AGX Model name YORK Outdoor YHUJYH048BAR-A-X YHUJYH048BAS-A-X Indoor YHGJXH048BAR--GX YHGJXH048BAR--GX Power supply V/Ph/Hz 230/1/50(60) 400/3/50(60) Capacity Btu/h 42319 41295 Capacity kW(min max) 12.4(5.6 13.6) 12.1(5.6 13.6) Input W(min max) 4316(2000 6000) 4300(2000 6000) Rated Cooling Rated current 18.5 2.87...
Page 30 Unit YHGJZH048BAR-AGX YHGJZH048BAS-AGX model YORK Outdoor YHUJYH048BAR-A-X YHUJYH048BAS-A-X Indoor YHGJXH048BAR--GX YHGJXH048BAR--GX Input Output O u t d o o r f a n motor Running current Speed Outdoor air flow m3/h 4200 4200 Outdoor noise level (Sound power level) dB(A)
Page 31 Unit YHGJZH060BAS-AGX Model name YORK Outdoor YHUJYH060BAS-A-X Indoor YHGJXH060BAR--GX Power supply V/Ph/Hz 400/3/50(60) Capacity Btu/h 51875 Capacity kW(min max) 15.2(3.7 15.8) Input W(min max) 5370(2000 6500) Rated Cooling Rated current 2.83 SEER Capacity Btu/h 54605 Capacity kW(min max) 16.0(3.7 17.0)
Page 32 Unit YHGJZH060BAS-AGX model YORK Outdoor YHUJYH060BAS-A-X Indoor YHGJXH060BAR--GX Input Output Outdoor fan motor Running current 0.55 Speed Outdoor air flow m3/h 6500 Outdoor noise level (Sound power level) dB(A) Outdoor noise level (Sound pressure level) dB(A) Unit (WxDxH) 948×340×1250 O u t d o o r...
Page 33: Dimensions
3. Dimension YHUJYH028BAR-A-X YHUJYH036BAR-A-X YHUJYH048BAR-A-X YHUJYH048BAS-A-X YHUJYH060BAS-A-X...
Page 34 YHUJYH024BAR-A-X Model YHUJYH024BAR-A-X 113.5...
Page 35 Cassette...
Page 36 YHFJZH012BAM-AFX YHFJZH018BAM-AFX YHFJZH024BAR-AFX...
Page 37 YHFJZH048BAS-AFX YHFJZH060BAS-AFX (mm) 1580 D=25 D = 47 D=200 D = 47 D = 47 D = 47 ? 47 ? 47 ? 200 ? 50 ? 47 ? 47...
Page 38 Low ESP duct Med ESP duct YHEJXH024BAR--GX...
Page 39 YHEJXH028/36/48BAR--GX 15.88 YHGJXH048/60BAR--GX 1105 1200 1320...
Page 40: Pipe And Wiring Installation
4. Piping and wiring installation outdoor unit...
Page 50 Forced fastening without centering may damage the threads and cause a gas leakage.
Page 54 INTERCONNECTING WIRES MUST BE WIRED ACCORDING TO FIGURE BELOW. INCORRECT WIRING MAY CAUSE EQUIPMENT DAMAGE.
Page 55 Cassette...
Page 61 Covertable type（12K/18K/24K)
Page 68 Covertable type（28K/36K/48K/60K)
Page 70 Bolt strength: 980 to 1470 N (100 TO 150 kgf) Anchor-bolt strength: 980 to 1470 N (100 TO 150 kgf)
Page 75 Low ESP DUCT...
Page 76 rivet...
Page 80 Med ESP DUCT BE SURE TO READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH, EQUIPMENT MALFUNCTION AND/OR PROPERTY DAMAGE.
Page 85 High ESP DUCT Installation Procedure...
Page 92: Pcb Photo,Wiring Diagram And Function Description
5. PCB photo,Wiring diagram and function description 5.1 Outdoor unit 5.1. 1. Outdoor PCB photo YHUJYH024BAR-A-X PCB(0011800241C)
Page 93 YHUJYH024BAR-A-X power module YHUJYH028/36BAR-A-X power module...
Page 94 YHUJYH028/36BAR-A-X filter board YHUJYH028/36/48BAR-A-X YHUJYH048BAS-A-X YHUJYH060BAS-A-X PCB(0151800054A)
Page 95 YHUJYH048BAS-A-X YHUJYH060BAS-A-X power module YHUJYH048BAS-A-X YHUJYH060BAS-A-X filter board...
Page 96 YHUJYH048BAR-A-X filter board YHUJYH048BAR-A-X power module...
Page 97 5.1.2. Wiring diagram YHUJYH024BAR-A-X...
Page 98 YHUJYH028/36BAR-A-X...
Page 99 YHUJYH048BAR-A-X...
Page 100 YHUJYH048BAS-A-X YHUJYH060BAS-A-X...
Page 101 3. Main control functions 3.1 Refrigerant diagram YHUJYH024BAR-A-X...
Page 102 YHUJYH028BAR-A-X YHUJYH036BAR-A-X...
Page 103 YHUJYH048BAR-A-X YHUJYH048BAS-A-X...
Page 104 YHUJYH060BAS-A-X...
Page 105 PCB 0151800054A dip switch setting YHUJYH028BAR-A-X YHUJYH036BAR-A-X YHUJYH048BAR-A-X YHUJYH048BAS-A-X YHUJYH060BAS-A-X SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 Description ---- ---- ---- ---- ---- ---- 28K outdoor unit ---- ---- ---- ---- ---- ---- 36K outdoor unit 48K outdoor unit ---- ---- ----...
Page 106 3.2 Outdoor frequency control 3.2.1 Compressor running frequency range: 30-91RPS. 3.3 Electronic expansion valve (EEV) control: 3.3.1 Electronic characteristic: Max. open angle 500 Pulse Driving speed 3.3.2 Initialization of EEV EEV driving speed: open direction: 32MS; close direction: 32MS 3.3.3 Open angle limit of EEV Unit stop Adjustable upper limit...
Page 107 exchanger and make defrosting control. 3.5.1 Enter condition: After the unit is in heating for 10 minutes and compressor run for 45 minutes in all , according to check the defrosting temp. sensor Te and outdoor ambient temp. sensor Tao, if they can meet the following condition, entering in defrosting operation.
Page 108 3.6 Frequency control when Td is too high Purpose : make compressor frequency control if the discharging temp. is too high, to low the discharging temp. efficiency and ensure the system can run normally. If keeps for 10s, the unit stops. 3 minutes later, the unit can re-startup.
Page 109 3.8.2 Procedure Cooling mode: refer to “the oil return procedure in cooling mode” Heating mode: refer to “the oil return procedure in heating mode” 3.8.3 The protection treatment in oil return operation: In the course of cooling oil return, because of all kinds of protection or abnormal unit stop, after the unit restart, the time will not be cleared, the system need another oil return operation.
Page 110 Send oil return signal oil return beginning oil return over Inverter compressor indicated FQY oil return frequency 120s Soft startup outdoor motor auto auto auto（TC control） 4-way valve 450pulse 450 pulse 300pulse（E） PMV auto open angel auto open angle all indoor motor ON anti-freeze startup Quit condition of oil return Max.
Page 111 5.2 Indoor unit 5.2.1 PCB(0151800106) for 28/36/48/60 indoor unit YHDJXH018BAM--GX...
Page 112 5.2.2. YHKJXH012/18/24BAM--FX YHFJXH012/18/24BAM--FX YHEJXH024BAR--GX...
Page 113 YHEJXH028/36/48BAR--GX...
Page 114 YHKJXH028/36/48/60BAR--FX YHFJXH028/36/48BAR--FX YHGJXH048/60BAR--GX...
Page 115 YHDJXH012/18/24BAM--GX REMOTE RECEIVER ALARM OR AIR EXCHAGE LINKAGE...
Page 116 5.2.5. . Electrical Control Functions For Cassette and Convertible type 1. Dip switch functions: YHKJXH*BAM--FX，YHFJXH*BAM--FX，YHDJXH024-060BAR--GX SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 Description 24K indoor 28K indoor 36K indoor 48K indoor 60K indoor Room card invalid Room card valid(default) Cooling only Heat pump (default) Without tempetature compensation...
Page 117 2. Sign definition: Indoor outdoor Toci Outlet Inlet Thick pipe Compressor Compressor Ambient Ambient Defrost pipe pipe coil of heat condenser suction discharging temp. temp. temp. temp. temp. temp. exchanger temp. temp. temp. Tcomp1,2 Tset Temp. compensation temp. 3. Dry operation Tai＜16℃, indoor unit stops running and sends stop-unit signal to outdoor.
Page 118 6.4 In AUTO mode, when the indoor unit occurs abnormal operation, the indoor unit will keep OFF state, and the buzzer will not sound until the outdoor mode and the requested mode of indoor unit are the same. 6.5 COOL (included AUTO COOL), DRY, FAN are not abnormal mode. 6.6 HEAT and FAN are not abnormal mode.
Page 119 12. Water pump control 12.1 Water pump will be electrified when indoor unit enters non-heating mode until indoor unit stops. 5 minutes later after indoor unit stops, water pump will stop. 12.2 When indoor unit is in heating mode, water pump will not operate. 12.3 In OFF state and in any mode, once float switch signal is measured, indoor unit will send OFF signal to outdoor and send the failure code of drainage system to the wired controller, then the water pump will work until the float switch signal is cancelled.
Page 120 17. Healthy negative ion function When receiving the healthy signal from the wired controller or remote controller, if fan motor is running, the negative ion will work; If the fan motor stops, the negative ion generator will stop. 18. Auto-restart function 18.1 Wired control type: jumper J07 at high level, auto-restart is available, if at low level, auto-restart is cancelled;...
Page 121 20. Setting method of temperature compensation Tcomp A. Wired control type unit: this function is not available B. Remote control type unit: In cooling or heating mode, there is always with the temp. compensation. In heating mode: In 24℃ heating mode, press SLEEP(or SWING) button 7 times continuously within 5 seconds, indoor buzzer sounds twice, that shows temp.
Page 122: Diagnostic Code And Troubleshooting
6. Diagnostic code and trouble shooting 6.1.1. Diagnostic code for outdoor unit YHUJYH024BAR-A-X Flash times of LED on Trouble description Analyze and diagnose mainboard Eeprom failure Outdoor main board eeprom fail IPM failure IPM failure Communication error between main board and spdu module SPDU Communication fail over 4 min Communicition error...
Page 123 YHUJYH024BAR-A-X YHUJYH028BAR-A-X YHUJYH036BAR-A-X YHUJYH048BAR-A-X YHUJYH048BAS-A-X YHUJYH060BAS-A-X PRODUCT DIAGNOSIS PROCEDURE Malfunction Analyze and diagnose Trouble Description Remark Code Non-resumable EEPROM faulty If it occurs 3 times in 1 hour, confirm the failure, the former twice will Non-resumable Over current protection in course of not alarm compressor frequency going down resumable...
Page 124 6.1.2. Diagnostic code for indoor unit Flash times of Flash times of Failure Timing LED(or Running LED(or Failure code(from code(from panel trouble shooting Possible reasons indoor PCB indoor PCB wired controller) controller ) LED4） LED3） Temperature sensor Sensor disconected，or broken，or Ta faulty at wrong position，or short circuit Temperature sensor...
Page 125: Trouble Shooting
6.2. Trouble Shooting: Trouble 1: No display on the operation panel start check if display replace display panel and the panel and check unit matched again well if the red diode if the power check the terminal and green diode terminal block is block and the on indoor PCB...
Page 126 Trouble 3: Communication failure between indoor and outdoor start as per the wiring re-wiring, and diagram, check if check again communication wiring is correct check if the if the power cable and the PCB is faulty, communication port communication wire are replace and connecting to the too close, resulting in the...
Page 127 Trouble 7: AC current over current protection or current transducer damaged, or compressor blocked rotor, compressor great vibration, compressor abnormal startup, state detecting curcuit abnormal or compressor damaged. The former twice failure can be resumed automatically, if outdoor board occurs this failure always, and can not be resumed for a long time, that shows: 1.
Page 128: Outdoor Performance Curves
7. Outdoor performance curves YHUJYH024BAR-A-X cooling capacity curves 8.00 7.00 18/12 20/14.5 6.00 22/16 25/18 5.00 27/19 30/22 32/23 4.00 3.00 2.00 10/6 21/15 25/18 32/20 38/24 43/26 46/26 53/32 Outdoor DB(℃） YHUJYH024BAR-A-X heating capacity curves 8.50 8.00 16/10 18/12 7.50 20/14.5 22/16...
Page 129 YHUJYH028BAR-A-X Heating capacity curves 12000 -6/-7 11000 -4/-5 -1/-2 10000 9000 8000 7000 12/10 16/15 6000 5000 4000 16/10 18/12 20/14.5 21/15 22/16 24/17 26/18 indoor DB/WB Cooling capacity curves 10000 9000 8000 7000 6000 5000 4000 3000 18/12 20/14 22/16 25/18 27/19...
Page 130 YHUJYH036BAR-A-X YHUJYH036BAR-A-X heating capacity curves -6/-7 heating capacity 13000 -6/-7 power 12500 input 12000 -4/-5 heating 11500 capacity 11000 -4/-5 power 10500 input 10000 0/-1 heating 9500 capacity 9000 0/-1 power input 8500 8000 2/1 heating 7500 capacity 7000 2/1 power input 6500 6000 6/5 heating...
Page 131 YHUJYH048BAS-A-X heating capacity curves 18000 ‐6/‐7 heating capacity 17000 ‐6/‐7 power 16000 input ‐4/‐5 heating 15000 capacity ‐4/‐5 power 14000 input 13000 ‐1/‐2 heating capacity 12000 ‐1/‐2 power 11000 input 1/0 heating 10000 capacity 1/0 power input 9000 8000 6/5 heating capacity 7000 6/5 power input 6000 7/6 heating 5000 capacity 4000 7/6 power input 3000 12/10 heating ...
Page 132 YHUJYH060BAS-A-X cooling capacity curves 19000 ‐6/‐7 heating capacity 18000 ‐6/‐7 power 17000 input ‐4/‐5 heating 16000 capacity 15000 ‐4/‐5 power input 14000 ‐1/‐2 heating 13000 capacity ‐1/‐2 power 12000 input 11000 1/0 heating capacity 10000 1/0 power input 9000 6/5 heating 8000 capacity 7000 6/5 power input 6000 7/6 heating 5000 capacity 7/6 power input 4000 3000 12/10 heating ...
Page 133: Indoor Air Velocity And Temperature Distribution Curves
8. Indoor air velocity and temperature distribution curves 8.1 AB Cooling / Air Velocity Distribution Cooling Blowy angle:25 Air Velocity Distribution b. Cooling / Temperature Distribution Cooling Blowy angle:25 Temperature Distribution...
Page 134 8.2 For AC a. Cooling / Air Velocity Distribution Cooling Blowy angle:25 Air Velocity Distribution 0.5m/s 1.0m/s 1.5m/s b. Cooling / Temperature Distribution Cooling Blowy angle:25 Temperature Distribution...
Page 135: Air Flow And Static Pressure Chart
9. Air flow and static pressure chart external static pressure curves YHEJXH028/036BAR--GX 2400 2300 2200 2100 2000 super high speed 1900 high speed 1800 middle speed 1700 low speed 1600 1500 1400 1300 1200 external static pressure External static external static pressure curves YHDJXH024BAR--GX pressure(Pa) high speed...
Page 136 External static pressure ( Pa ) external static pressure curves YHGJXH048BAR--GX high speed m id speed low speed Air flow （ m /h ） 2700 3000 600 900 1200 1500 1800 2100 2400...
Page 137: Noise Level
10. Noise level a. Casset type indoor unit .7/ V`nodib dggpnom\o`@ .8/ V`nodib ^ji_dodji@ \4 Wido mpiidib di oc` ijhdi\g ^ji_dodji ]4 V`no di oc` n`hd3\i`^cjd^ ^c\h]`m ^4 Pjdn` g`q`g q\md`n amjh oc` \^op\g a\^ojmn np^c \n mjjh nomp^opm`2 `o^4 Test method According to the testing illustrator, the microphones wearing sponge style cover should be placed in the right position...
Page 141 b. Convertible type indoor unit Test method According to the testing illustrator, the microphones wearing sponge style cover should be placed in the right position...
Page 144 c. Duct type indoor unit Test method According to the testing illustrator, the microphones wearing sponge style cover should be placed in the right position...
Page 147 Test method Set the unit: 1) the unit is placed on the rubber whose thickness is 5mm; 2) if the height between the air outlet and ground is less than 1m, block the unit up to 1m.far from ground Test position: After setting the unit ,the test position for the noise is 1m far from the front panel...
Page 150: Sensor Characteristic
11. Sensor characteristic 1. Sensor characteristic model model name name code code characteristic characteristic Outdoor ambient temperature R25℃=10KΩ±3% 0010450192 sensor B25/50=3700K±3% YHUJYH028/36 R25℃=10KΩ±3% BAR-A-X Defrost temperature sensor 0010450194 B25/50=3700K±3% R80℃=50KΩ±3% YHUJYH048B Discharge temperature sensor 0010451303 B25/50=4450K±3% AR-A-X R25 = 10KΩ±3%， R25 10KΩ±3%，...
Page 152: Controller Functions
6=K@ ;I@J=LCHG...
Page 153 <CF@J ;:4;88 ;:3;88 ;I@J=LCHG...
Page 154 <CF@J ;:4;88 ;:3;88 ;I@J=LCHG 9@=ELBO =CJAEHN ;I@J=LCHG 5CJ 8EHN 7CJ@>LCHG 5?DMKLF@GL...
Page 160 ¡ TYPE 1, FOR AD*SS1ERA Indoor 1 Indoor 2 Indoor N Indoor 15 Indoor 16 (master unit) Wire controller Wire controller Wire controller Wire controller Wire controller port port port port port A BC A BC A B C A B C Control wiring of wire controller...
Page 161 There are three methods to connection wire controller and the indoor units: A.One wired controller can control max. up to 16 sets of indoor units, and 3 pieces of polar wire must connect the wire controller and the master unit (the indoor unit connected with wire controller directly), the others connect with the master unit through 2 pieces of polar wire(3 pieces for model AD*SS1ERA, and the bridge CN22 CN23 on slave units PCB should be cut off).

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York YHKJXH012BAM--FX Service Manual

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