aircon AMSCI4H4S24 Technical & Service Manual

Multi-split type air conditioners

Hide thumbs

page of 57

/ 57
Bookmarks

Quick Links

Download this manual

TECHNICAL&SERVICE MANUAL

Models:

<Outdoor

Unit>

AMSCI4H4S24

AMSCI4H4S36

—MULTI-SPLIT TYPE AIR CONDITIONERS

R410A

V1.0

Need help?

Do you have a question about the AMSCI4H4S24 and is the answer not in the manual?

Questions and answers

Summary of Contents for aircon AMSCI4H4S24

Page 1 R410A R410A R410A R410A TECHNICAL&SERVICE MANUAL V1.0 —MULTI-SPLIT TYPE AIR CONDITIONERS Models: <Outdoor Unit> AMSCI4H4S24 AMSCI4H4S36...
Page 2 SAFETY SUMMARY IMPORTANT NOTICE ● We pursue a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary specifications without notice. ● We cannot anticipate every possible circumstance that might involve a potential hazard. ●...
Page 3 ● If circuit breaker or fuse is often activated, stop the system and contact your service contractor. ● Check that the ground wire is securely connected. If the unit is not correctly grounded, it lead electric shock.Do not connect the ground wiring to gas piping, water piping, lightning conductor or ground wiring for telephone.
Page 4 Multi-Split Type Air Conditioner Service Manual Table of Contents 1. General ..............................1 1.1 Features............................1 1.2 Product lineup..........................3 1.3 Nomenclature ..........................3 1.4 Unit installation ..........................4 1.5 Working range..........................4 1.6 Product appearance ........................5 2. Specifications............................6 3. Outlines and dimensions........................7 4. Electrical data ............................9 5.
Page 5 1. General 1.1 Features Features  Twin Rotary DC Inverter Compressor The twin rotary inverter compressor design reduces friction during operation for smoother rotation with less vibration, while also preventing leakage of refrigerant gas during compression. The result is a far quieter and more efficient air conditioner.
Page 6  Comfortable temperature control DC inverter power control uses its full capacity at startup to cool/warm quickly. As soon as the set temperature is reached, it carefully adjusts current frequency to prevent temperature fluctuation and energy loss.  Long piping lengths for installation flexibility The ample maximum piping length of 60 m permits more freedom in the placement of air conditioner units and enables you to optimise interior space.
Page 7 1.2 Product lineup Outdoor Unit Model(Btu/h) Type ○ Dual ● Trio Quattro ● ● --- available model --- in development 1.3 Nomenclature...
Page 8 1.4 Unit installation With the DC inverter technology, one outdoor unit can be connected with 4 indoor units at most. The combination rate range is from 80% to 130%. Model(Btu/h) Max. Combined Quantity of Indoor Units 1.5 Working range Power Supply Working Voltage 198V ~ 253V Voltage Imbalance...
Page 9 1. GENERAL 1.6 Product appearance Outdoor Unit Type Capacity (Btu/h) View Trio Quattro...
Page 10 2. SPECIFICATIONS 2. Specifications Type(Free Match) up to 3 indoor units up to 4 indoor units Model Name AMSCI4H4S24 AMSCI4H4S36 R410A R410A Cooling Capacity 95 ºF Btu/h 24000 32000 47 ºF Btu/h 24000 36000 Heating Rated Capacity 17 ºF Btu/h...
Page 11 3.OUTLINES AND DIMENSIONS 3. Outlines and dimensions Unit:in.(mm) 7-1/4(185) 22-7/8(580) 7(180) 37-3/8(950) 3-1/4(82) 40-7/8(1032) 13-9/16(344) 5/8(15) 2-3/4(70)
Page 12 3.OUTLINES AND DIMENSIONS Unit:in.(mm) 13-1/2(349) 37-3/8(950) 14-1/2(368) 7-1/4(185) 22-7/8(580) 13-9/16(344) 2-3/4(70) 5/8(15)
Page 13 4. ELECTRICAL DATA 4. Electrical data Power supply Applicable voltage Nominal Outdoor Nominal Frequency Voltage(V) Umin(V) Umax(V) Sensitive (Hz) unit Current(A) Current(mA) 208/230 208/230 NOTE: 1. The above compressor data is based on 100% capacity combination of indoor units at the rated operating frequency.
Page 14 5. CAPACITIES AND SELECTION DATA 5. Capacities and selection data 5.1 Capacity characteristic charts The following charts show the characteristics of outdoor unit capacity, which corresponds with the operating ambient temperature of outdoor unit. Conditions: ① Pipe length / height difference : 5m / 0m ②...
Page 15 5. CAPACITIES AND SELECTION DATA COOLING CAPACITY (Btu/h) 60.8(16) 71.6(22) 25562 25562 25562 25869 26483 24299 23378 66.2(19) 80.6(27) 30237 30237 30545 30852 31739 28360 24948 71.6(22) 86(30) 33036 33343 33684 33991 34913 29623 26483 °F(℃) DB : Dry Bulb Temperature °F(℃) WB : Wet Bulb Temperature HEATING CAPACITY (Btu/h) 3.2(-16)
Page 16 5. CAPACITIES AND SELECTION DATA 5.2 Piping length correction factor Pipe length L Indoor unit Height difference H Outdoor unit The correction factor is based on the equivalent piping length in meters (EL) and the height between outdoor and indoor units in meters (H). Height between indoor unit and outdoor unit (m).
Page 17 5. CAPACITIES AND SELECTION DATA The correction factor of height between indoor unit and outdoor unit 16ft(5m) 32.8ft(10m) 49ft(15m) 66ft(20m) 82ft(25m) 98ft(30m) Height difference 0.95 0.88 0.75 Factor To ensure correct unit selection, consider the farthest indoor unit. NOTE: 1. Above data is assuming that the height difference between indoor unit and outdoor unit is 0m. 2.
Page 18 5. CAPACITIES AND SELECTION DATA 5.3 Co o rrection factors a a ccordin g g to defro sting ope e ration The hea a ting capaci t t y in the pre ceding par a a graph, excl udes the co ndition of th e frost or th defrostin n g operatio...
Page 19 6.SOUND PRESSURE DATA 6. Sound pressure data Model Model 3.28ft (1.0m) ahead of the unit; 1.79ft 3.28ft(1.0m) ahead of the unit; Test condition (0.546m) high from the bottom of the Test condition 3ft(0.92m) high from the bottom of the unit;3.28ft (1.0m) high from the ground unit;...
Page 20 7. REFRIGERANT CYCLE 7. Refrigerant cycle Ambient Temperature Sensor Ambient Temperature Water Level Switch Ambient Temperature Water Level Switch Muffler Liquid Stop Volve High Pressure Ambient Temperature Switch Liquid Temperature Muffler Water Level Switch Sencor 4-Way Valve Pressure Ambient Temperature Switch Suction Discharge...
Page 21 8. WIRING DIAGRAM 8. Wiring diagram 8.1 Electrical wiring diagram...
Page 22 8. WIRING DIAGRAM...
Page 23 8. WIRING DIAGRAM 8.2 Control board picture Main control board AC Power DC Power DC fan IPM-SI Signal to filter board SI-N SI-C SI-B SI-A E2 program Computer monitor Compressor overheat - protection switch pressure switch High pressure Discharge/ Electroni c Electronic Electronic LiqA/GasA/...
Page 24 8. WIRING DIAGRAM Main control board Electronic LiqA/GasA LiqC/GasC Electronic Electronic Compressor expansion /LiqB/Gas /LiqD/Gas expansion IPM-SI expansion valve C overheat B sensor D sensor valve A valve B protection switch DC-FAN High pressure switch Electronic expansion pressure valve D switch Discharg e/defrost/...
Page 25 8. WIRING DIAGRAM 8.3 Common wiring Electrical wiring diagram Outdoor unit Terminal Note: For some indoor units Terminal A 1(L) 1(L) Power connecting cord Indoor unit A 2(N) 2(N) Terminal Indoor unit Outdoor unit 4(SI) 4(SI) Power connecting cord 3(SI) 1(L) Terminal B 1(L)
Page 26 8. WIRING DIAGRAM (1) Follow local codes and regulations when select field wires, and all the above are the minimum wire size. (2) When transmitting cable length is more than 49-1/5 ft. (15 m), a larger wire size should be selected. (3) Install main switch and ELB for each system separately.
Page 27 9. FIELD SETTING 9. Field Setting 9.1 DIP setting Dip Switch Setting of Outdoor Unit Mark of " " indicates the position of dip switches. Switch is valid when is ON. Refrigerant collection function By default setting is OFF. OFF ----normal mode ON----refrigerant collection mode When the power is ON, the dial changed from OFF to ON, enters into refrigerant collection mode.
Page 28 9. FIELD SETTING 9.2 Running Parameter Query Outdoor Running parameters can be checked by 7 segment display. 7 segment display Digital Display Switch Outdoor control board ● ● ● Decrease Select Increase There are 3 buttons on the digital display board： 1) Select button: Select to display outdoor/indoor unit parameter.
Page 29 9. FIELD SETTING Parameter Descriptions Dual Trio Quattro 1 by 5 Fault codes ● ● ● ● Compressor actual frequency ● ● ● ● Compressor driving frequency ● ● ● ● Compressor target frequency ● ● ● ● Compressor exhaust temperature ●...
Page 30 9. FIELD SETTING Parameter Descriptions Dual Trio Quattro 1 by 5 Unit D set temperature ○ ○ ● ● Unit D capacity ○ ○ ● ● D.10 Unit D set fan speed ○ ○ ● ● Unit D actual suction overheating D.11 ○...
Page 31 10. PIPING WORK AND REFRIGERANT CHARGE ping work and re f f rigerant c c harge 10. Pi M M AX. leng g th allow e e d 10.1 Indoor unit Model A≤65.6(20) A≤65.6(20) Max. Length Between Indoor Unit B≤65.6(20) ft./m B≤65.6(20) and Outdoor Unit...
Page 32 10. PIPING WORK AND REFRIGERANT CHARGE NOTE: When n the indoo o r unit is lo w w er than ou u tdoor unit for more th h an 5m, an oil bend sh h ould be empl o o yed on suc c tion piping.
Page 33 10. PIPING WORK AND REFRIGERANT CHARGE 10.4 Additional refrigerant charge Although refrigerant has been charged into this unit, additional refrigerant charge is required according to piping length. The additional refrigerant precharge quantity should be determined and charged into the system •...
Page 34 11. CONTROL MODE 11. Control mode 1) Cooling Anti-freeze Protection To prevent freezing caused by too low temperature of indoor evaporator, the air conditioner will implement real-time detection over the indoor coil temperature. If the indoor coil temperature is too low, the compressor will be prohibited from increasing the frequency or decrease the frequency even shut down automatically 2) Heating Overload Protection...
Page 35 11. CONTROL MODE b. Mode conflict The operating mode of outdoor unit is decided by the operating mode of the indoor unit firstly booted. Indoor unit subsequently booted will firstly determine whether it’s own mode is conflict with the outdoor mode. If so, the indoor unit will automatically shut down after three beeps; If there is no conflict, the indoor unit will boot normally.
Page 36 12. SENSOR PARAMETER 12. Sensor parameter 1. THE PARAMETER OF OUTDOOR COMPRESSOR DISCHARGE TEMPERATURE SENSOR:（R =187.25K±6.3%；R =3.77K±2.5K；B0/100=3979K±1%） T [°F ] T [℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 908.2603 985.5274 1065.1210 -7.84 7.47 855.3955...
Page 37 12. SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [℃ ] T [°F ] 71.2227 75.3122 79.3848 -5.43 5.13 68.1036 71.9808 75.8414 -5.39 5.09 65.1373 68.8141 72.4746 -5.34 5.05 62.3155 65.8032 69.2746 -5.30 5.01...
Page 38 12. SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [℃ ] T [°F ] 8.0951 8.3705 8.6440 -3.29 3.16 7.8290 8.0926 8.3544 -3.26 3.13 7.5730 7.8252 8.0758 -3.22 3.10 7.3264 7.5679 7.8078 -3.19 3.07...
Page 39 12. SENSOR PARAMETER 2. THE PARAMETER OF THE OTHER SENSOR IN INDOOR AND OUTDOOR UNIT： =15K±2%；B0/100=3450K±2%）（R T [℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [°F ] 60.78 64.77 68.99 -6.16 6.12 57.75...
Page 40 12. SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [°F ] T [℃ ] 5.667 5.882 6.103 -3.66 3.62 5.449 5.664 5.886 -3.80 3.77 5.240 5.456 5.678 -3.96 3.91 5.048 5.260 5.478 -4.03 3.98...
Page 41 12. SENSOR PARAMETER T [°F ] T [℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 0.8570 0.9246 0.9971 -7.31 7.27 0.8316 0.8977 0.9687 -7.36 7.33 0.8071 0.8717 0.9412 -7.41 7.38 0.7834 0.8466 0.9146 -7.47 7.43...
Page 42 13.TROUBLESHOOTING 13.Trouble shooting 13.1 Trouble guide When the air conditioner failure occurs, the fault code will displays on control board. HOW TO CHECK FAULT CODES Main control failure Fault code will display on segment display on outdoor control board. Outdoor Control Board 7 segment display...
Page 43 13.TROUBLESHOOTING 13.2 Fault codes The following is the fault code table of outdoor. Sheet 1 Outdoor Fault Code Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1.Reconnect the outdoor 1.The outdoor ambient temperature ambient temperature sensor; Outdoor ambient sensor connect loose;...
Page 44 13.TROUBLESHOOTING Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. Normally protection Three-phase power is abnormal; Application of 2. Check the wiring connection The outdoor wiring connect wrong; three-phase voltage absent phase refer to the wiring diagram; The outdoor control board is power supply 3.
Page 45 13.TROUBLESHOOTING Fault Fault Description Possible Reason of Abnormality How to Deal With Remarks code 1. Reconnect the wiring of the 1. The wiring of the sensor for the sensor for the expansion valve expansion valve B (thin tube) B(thin tube); Expansion valve B connect loose;...
Page 46 13.TROUBLESHOOTING Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1.The cable between the control 1.Reconnect the cable between board and the driver board the control board and the connect loose; driver board; IPM and control board 2.The cable between the control 2.Replace the communication communication fault...
Page 47 13.TROUBLESHOOTING NOTE 1: If the indoor unit can not turn on or the indoor unit turn off itself after 30s, at the same time the unit do not display the fault code, please check the fire and the socket of the control board. Note 2: If the indoor unit display the 75,76,77,78 fault code after you turn on the unit, please check the TEST seat of the indoor control board or the TEST detection circuit whether exists short circuit.
Page 48 13.TROUBLESHOOTING Sheet 5 Drive Fault code Fault Fault Description Possible Reason of Abnormality How to Deal With code 1. compressor wire connect not well; 1. Check compressor wire; 2. Bad driver board components; 2. Change driver board ; Q axis current 3.
Page 49 13.TROUBLESHOOTING Fault Fault Description Possible Reason of Abnormality How to Deal With code 1.Voltage input too low ; 1.Check the power supply. DC voltage is too low 2.Driver board fault. 2.Change the driver board. Driver board read EE 1.EEPROM has no data or data error; 1,Change EEPROM component;...
Page 50 14.CHECKING COMPONENTS 14.Checking components 14.1 Check refrigerant system TEST SYSTEM FLOW Conditions: ① Compressor is running. ② The air condition should be installed in good ventilation. Tool: Pressure Gauge Technique: ① see ② feel ③ test ----- Tube defrost. FEEL ----- The difference between tube’s temperature. TEST ----- Test pressure.
Page 51 14.CHECKING COMPONENTS Test system flow Cooling mode Test system The pressure on the pressure.Does the low high side. pressure normal at service part ? Recharge refrigerant after air purging with If the pressure is The pressure on the the vacuum close to static low side.
Page 52 14.CHECKING COMPONENTS 14.2 Check parts unit 1. Fan motor DC motor MODEL:SIC-71FW-D8121-136K MODEL:SIC-81FW-F1138-1 2. Compressor COMPRESSOR EXAMINE AND REPAIR Model: EATF250D22UMT Model: EATF400D64UMTA DC Inverter & Power Controller Compressor...
Page 53 14.CHECKING COMPONENTS Test in resistance. TOOL: Multimeter. Test the resistance of the winding. The compressor is fault if the resistance of winding 0(short circuit)or∞（open circuit） Familiar error: Compressor motor lock. Discharge pressure value approaches static pressure value . Compressor motor winding abnormality. Notes ：...
Page 54 14.CHECKING COMPONENTS 6. FUSE Checking continuity of fuse on PCB ASS’Y. Remove the PCB ASS’Y from the electrical component box. Then pull out the fuse from the PCB ASS’Y (Fig.1) Fuse PCB Ass'Y Fig.1 2) Check for continuity by a multimeter as shown in Fig.2. Fuse Fig.2 7.CAPACITOR...
Page 55 15. DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR 15. Disassembly and assembly for compressor and motor The special tools for compressor & motor disassembly and assembly： Tool Hexagon Screwdriver Hexagon Socket Outdoor unit Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and verified as voltage free.
Page 56 15. DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and verified as voltage free. Step Illustration Handling Instruction 1. Remove the top cover, 1. Remove external handle and valve cover;...
Page 57 Product improvement, specifications and appearance in this manual are subject to change without prior notice.

This manual is also suitable for:

Amsci4h4s36