Related Manuals for aircon ASDDI4H4S24
Summary of Contents for aircon ASDDI4H4S24
- Page 1 R410A R410A R410A R410A TECHNICAL & SERVICEMANUAL V1.0 —DC-INVERTER AIR CONDITIONERS OUTDOOR UNIT MODEL: ASDDI4H4S24 ASDDI4H4S36 ASDDI4H4S48 ASDDI4H4S60...
- 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 will lead to electric shock. Do not connect the ground wiring to gas piping, water piping, lightning conductor or ground wiring for telephone.
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Page 4: Table Of Contents
Table of Contents 1. General ..............................1 1.1 Features............................1 1.2 Product lineup..........................1 1.3 Nomenclature ..........................1 1.4 Unit installation ..........................2 1.5 Working range..........................2 1.6 Product appearance ........................2 2. Specifications............................3 3. Outlines and dimensions........................5 4. Electrical data ............................8 5. Capacities and selection data ........................9 5.1 Capacity characteristic charts .......................9 5.2 Piping length correction factor .....................22 5.3 Correction factors according to defrosting operation..............23... -
Page 5: General
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. 1.2 Product lineup Model (Btu/h) Type Outdoor unit : available model 1.3 Nomenclature ASDDI4H4S24... -
Page 6: Unit Installation
1.GENERAL 1.4 Unit installation 1:1 system is the only compatible combination. (Only one indoor unit can be connected with one outdoor unit.) 1.5 Working range Power Supply 198V ~ 253V Working Voltage Within a 3% deviation from each voltage at the main terminal of outdoor unit Voltage Imbalance Higher than 85% of the Rated Voltage Starting Voltage... -
Page 7: Specifications
2. SPECIFICATIONS 2. Specifications Outdoor model Power supply V/ph/Hz 208~230/1/60 208~230/1/60 208~230/1/60 208~230/1/60 Capacity Btu/h 24000 36000 48000 56000 Capacity(min-max) Btu/h 6700-26000 11800-36800 18300-52000 18300-59400 Capacity(min-max) 2227-7327 2814-10697 5363-15240 5363-17409 Input 2200 3770 4690 6560 Cooling Current 16.5 21.0 26.8 SEER1 Btu/(W.h) 17.5... - Page 8 2. SPECIFICATIONS Outdoor model Type Twin ROTARY Twin ROTARY Twin ROTARY Twin ROTARY Capacity Btu/h 26085 26085 41865 41865 Compressor Input 2080 2080 3385 3385 Rated current(RLA) 9.45 9.45 15.39 15.39 VG74 /670 VG74 /670 VG74 /1000 VG74 /1000 Refrigerant oil VG74 /22.7 VG74 /22.7 VG74 /33.9...
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Page 9: Outlines And Dimensions
3.OUTLINES AND DIMENSIONS 3. Outlines and dimensions Unit : in.(mm) - Page 10 3.OUTLINES AND DIMENSIONS Unit : in.(mm) 6-1/8 7-1/4(185) 22-7/8(580) 3-1/2 (155) 2-5/8(66) 37-3/8(950) (88) 40-7/8（1038） 13-9/16(344) 2-3/4 4- φ 5/8 (15 ) (70)
- Page 11 3.OUTLINES AND DIMENSIONS 48K/60K Unit : in.(mm)
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Page 12: Electrical Data
4.ELECTRICAL DATA 4. Electrical data Power supply Applicable voltage Indoor Unit Nominal Frequency Nominal Voltage (V) Umin (V) Umax (V) Sensitive (Hz) Current (A) Current (mA) 208/230 3 6 K 208/230 48K/60K 208/230 NOTE: 1. The above compressor data is based on 100% capacity combination of indoor units at the rated operating frequency. 2. -
Page 13: Capacities And Selection Data
5.CAPACITIES AND SELECTION DATA 5. Capacities and selection data 5.1Capacity 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: 25 ft. (7.6m) / 0 ft. (0m) ②... - Page 14 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 24K outdoor unit matches 18K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 59/15 Outdoor Airflow IDB (°F/℃) (CMF) (°F/℃) /21.1 /21.1 /23.9 /26.7 /29.4 /21.1 /26.7 /21.1 /23.9 /26.7 /29.4 /23.9 /29.4...
- Page 15 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 24K outdoor unit matches 24K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 59/15 Outdoor Airflow IDB (°F/℃) (CMF) /21.1 /21.1 /23.9 /26.7 /29.4 /21.1 /21.1 /23.9 /26.7 /29.4 (°F/℃) /23.9 /29.4 /23.9...
- Page 16 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 36K outdoor unit matches 30K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 Outdoor 59/15 Airflow IDB (°F/℃) (CMF) (°F/℃) /21.1 /21.1 /23.9 /26.7 /29.4 /21.1 /21.1 /23.9 /26.7 /29.4 /23.9 /26.7 /29.4...
- Page 17 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 36K outdoor unit matches 36K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 59/15 Outdoor Airflow (CMF) IDB (°F/℃) (°F/℃) /21.1 /21.1 /23.9 /26.7 /29.4 /21.1 /21.1 /23.9 /26.7 /29.4 /23.9 /26.7 /29.4...
- Page 18 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 48K outdoor unit matches 42K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 59/15 Outdoor Airflow (CMF) IDB (°F/℃) (°F/℃) /21.1 /23.9 /26.7 /29.4 /21.1 /23.9 /26.7 /21.1 /23.9 /26.7 /29.4 /29.4 /29.4...
- Page 19 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 48K outdoor unit matches 48K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 Outdoor 59/15 Airflow (CMF) IDB (°F/℃) /21.1 /21.1 /23.9 /26.7 /29.4 /21.1 /21.1 /23.9 /26.7 /29.4 /23.9 /26.7 /29.4 /23.9...
- Page 20 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 60K outdoor unit matches 48K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 59/15 Outdoor Airflow (CMF) IDB (°F/℃) /21.1 /26.7 /21.1 /21.1 /23.9 /29.4 /26.7 /29.4 /21.1 /26.7 /23.9 /26.7 /29.4 /23.9...
- Page 21 5.CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 60K outdoor unit matches 60K indoor unit IWB (°F/℃) 63/17.2 67/19.4 71/21.6 59/15 Outdoor Airflow (CMF) IDB (°F/℃) /21.1 /21.1 /23.9 /26.7 /29.4 /21.1 /21.1 /23.9 /26.7 /29.4 /23.9 /26.7 /29.4 /23.9...
- Page 22 5.CAPACITIES AND SELECTION DATA Performance data (Heating operation at rated frequency) 24K outdoor unit matches 18K indoor unit Airflow (°F/℃) (°F/℃) （CFM） /12.7 /8.3 /5.5 /-2.8 /-5.5 /-8.3 /-11.1 -13.9 /22.2 /19.4 /13.9 /11.1 /2.8 -16.7 /-20 21.2 21.2 21.2 21.2 21.1 20.3 18.7 17.3 16.0 16.1 15.1 14.4 13.5 12.5 11.7 10.9 1.15 1.23 1.33 1.44 1.56 1.57 1.51 1.46 1.42 1.56 1.52 1.47 1.40 1.39 1.35 1.33 16.4 16.3 16.4 16.3 16.2 16.1 16.1 16.1 15.8 15.8 14.7 14.2 13.2 12.3 11.5 10.7 0.86 0.91 0.99 1.06 1.14 1.24 1.37 1.49 1.55 1.69 1.64 1.59 1.54 1.50 1.45 1.42...
- Page 23 5.CAPACITIES AND SELECTION DATA Performance data (Heating operation at rated frequency) 36K outdoor unit matches 30K indoor unit Airflow (°F/℃) (°F/℃) （CFM） /19.4 /12.7 /13.9 /11.1 /8.3 /5.5 /2.8 /-2.8 /-5.5 /-8.3 /-11.1 -13.9 /-20 /22.2 -16.7 36.5 36.5 36.4 36.4 36.3 35.0 32.2 29.8 27.6 27.7 26.0 24.9 23.3 21.6 20.1 18.8 2.17 2.32 2.52 2.73 2.95 2.97 2.86 2.76 2.68 2.95 2.87 2.79 2.70 2.64 2.56 2.51 28.2 28.1 28.2 28.1 27.9 27.8 27.8 27.8 27.2 27.2 25.3 24.5 22.8 21.2 19.9 18.4 1.62 1.71 1.88 2.01 2.16 2.35 2.59 2.82 2.93 3.21 3.11 3.02 2.92 2.84 2.75 2.68...
- Page 24 5.CAPACITIES AND SELECTION DATA Performance data (Heating operation at rated frequency) 48K outdoor unit matches 42K indoor unit Airflow (°F/℃) (°F/℃) （CFM） /-2.8 /-5.5 /-8.3 /19.4 /12.7 /13.9 /11.1 /8.3 /5.5 /2.8 /-11.1 -13.9 -16.7 /-20 /22.2 49.5 49.5 49.4 49.4 49.2 47.4 43.6 40.3 37.4 37.5 35.2 33.7 31.5 29.2 27.3 25.5 3.06 3.27 3.55 3.84 4.15 4.18 4.02 3.88 3.77 4.15 4.04 3.93 3.80 3.72 3.60 3.53 38.3 38.0 38.3 38.1 37.8 37.7 37.7 37.7 36.8 36.8 34.3 33.2 30.9 28.7 26.9 25.0 2.29 2.41 2.65 2.83 3.04 3.31 3.65 3.97 4.12 4.52 4.38 4.25 4.11 4.00 3.87 3.77...
- Page 25 5.CAPACITIES AND SELECTION DATA Performance data (Heating operation at rated frequency) 60K outdoor unit matches 48K indoor unit Airflow （CFM） (°F/℃) (°F/℃) /19.4 /12.7 /13.9 /11.1 /8.3 /5.5 /2.8 /-2.8 /-5.5 /-8.3 /-11.1 -13.9 /-20 /22.2 -16.7 56.6 56.6 56.4 56.4 56.3 54.2 49.8 46.1 42.8 42.9 40.3 38.5 36.0 33.4 31.2 29.1 3.40 3.64 3.95 4.27 4.62 4.65 4.48 4.32 4.20 4.62 4.49 4.37 4.20 4.13 4.01 3.93 43.7 43.4 43.7 43.6 43.2 43.0 43.0 43.0 42.1 42.1 39.2 37.9 35.3 32.8 30.8 28.6 2.54 2.68 2.95 3.15 3.39 3.68 4.06 4.42 4.59 5.02 4.87 4.73 4.57 4.45 4.31 4.20...
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Page 26: Piping Length Correction Factor
5.CAPACITIES AND SELECTION DATA 5.2 Piping length correction factor Pipe length L Indoor unit Height difference H Outdoor unit Add. Max. Height Max. Pipe Refrigerant Model difference length (L) [exceed 25ft 7.6m] 0.38(oz/ft) 164ft. (50m) 98ft. (30m) [35(g/m)] 0.38(oz/ft) 246ft. (75m) 98ft. -
Page 27: Correction Factors According To Defrosting Operation
5.CAPACITIES AND SELECTION DATA The correction factor of height between indoor unit and outdoor unit 16ft (5m) 33ft (10m) 108ft (30m) Height difference 0.01 0.02 0.025 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 28: Sound Pressure Data
6. SOUND PRESSURE DATA 6. Sound pressure data Outdoor unit Model Model 3.28ft(1.0m) in front of the unit; 2.7ft (0.83) 3.28ft. (1.0m) in front of the unit; 3.28ft. high from the bottom of the unit; 3.28ft Test condition Test condition (1.0m) above the bottom of the unit. -
Page 29: Refrigerant Cycle
7.REFRIGERANT CYCLE 7. Refrigerant cycle Outdoor unit 24K/36K Cooling cycle Heating cycle List of components Compressor Electronic expansion valve Discharge temperature sensor Stop valve (Liquid) Stopv valve (Gas) 4-Way valve Outdoor heat exchanger One-way valve Coil temperature sensor Strainer Ambient temperature sensor Pressure sensor... - Page 30 7.REFRIGERANT CYCLE 48K/60K Cooling cycle Heating cycle List of components Compressor Coil temperature sensor Discharge temperature sensor Defrost temperature sensor Electronic expansion valve High pressure switch Suction temperature sensor Strainer 4-Way valve One-way valve Pressure sensor Stopv valve (Gas) Stop valve (Liquid) Outdoor heat exchanger Low pressure switch Ambient temperature sensor...
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Page 31: Wiring Diagram
8.WIRING DIAGRAM 8. Wiring diagram 8.1 Electrical wiring diagram 24K/36K Electric wiring diagram 2150423.D DIP Switch Setting of Outdoor Unit S4 DIP switch setting S5 DIP switch setting Turn on the power before setting the DIP switch. Without turning on, the swithes do not work and the content of the setting Capacity are invalid. - Page 32 8.WIRING DIAGRAM 48K/60K Electric wiring diagram 2153502.D DIP Switch Setting of Outdoor Unit DIP switches. S4 DIP switch setting S5 DIP switch setting Capacity...
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Page 33: Control Board Picture
8. WIRING DIAGRAM 8.2 Control board picture 24K/36K Main control board 4 56 7 Description Description Compressor Heater DC Fan Communication Signal Coil Temperature Sensor AC Power Lin Ambient Temperature Sensor AC Power Nin Discharge Temperature Sensor Overheat Protector Reactor L2 Electronic Expansion Valve Reactor L1 High Pressure... - Page 34 8.WIRING DIAGRAM 7-Segment display board Description Description Computer/Checker to Outdoor Control Board S3-Decrease Button 7-Segment Display S2-Select Button DIP Switch S1-Increase Button...
- Page 35 8.WIRING DIAGRAM 48K/60K Main control board Description Description DC Fan Driver1 Checker DC Fan Driver2 EEPROM IPM-SI PTC Control Signal Defrost /Coil Temperature Sensor H Signal Pressure Sensor Communication Signal Discharge Temperature Sensor Electric Heating Belt Ambient Temperature Sensor Electric Heating Belt High Pressure Switch 4-way Valve Low Pressure Switch...
- Page 36 8.WIRING DIAGRAM Drive board Description Description DC Fan Drive Signal Reactor L2 IPM-SI Compressor W Compressor U Compressor V DC Fan 1 Reactor L1 DC Fan 2...
- Page 37 8. WIRING DIAGRAM Filter board Description Description N Out PTC Control Signal L Out...
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Page 38: Common Wiring
8.WIRING DIAGRAM 8.3 Common wiring Recommended Wire Size Model Power Source Transmitting Fuse or Circuit Power Supply Nominal (Btu/h) Cable Size Cable Size Breaker (A) Rated Current Sensitive Current (mA) 208/230V 3×12AWG 5×16AWG 3 6 K ~/60Hz 208/230V 3×10AWG 5×16AWG 4 8 K / 6 0 K ~/60Hz 208/230V... -
Page 39: Field Setting
9.FIELD SETTING 9. Filed setting DIP Switch Setting of Outdoor Unit (Optional setting) 1. Turn on all power sources before setting. Without turning on, the switches settings are not refreshed and might be invalid. (24K/36K) 2. Turn off all power sources before setting. Without turning off, the switches settings are not refreshed and might be invalid.(48K/60K) 3. - Page 40 9.FIELD SETTING Step 4: Open the maintenance panel. Step 5: Switch the dial code (referring to outdoor wiring diagram ) ON position on the main control board. Step 6: Switch on the machine power. Step 7: Check if “40” is displayed on the LED digital tube of the main control board. Step 8: When the numerals on the LED digital tube of outdoor unit count down to 0 (40 →...
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Page 41: Running Parameter Query
9.FIELD SETTING 9.2 Running parameter query Query by 7 segment display 7 segment display Digital display switch 7-segment display Introduction 24K/36K ● ● ● Decrease Select Increase There are 3 buttons on the digital display board： 1) Select button: Select to display outdoor/indoor unit parameter. "P."... - Page 42 9.FIELD SETTING Parameters can be checked in the following table below. Parameter Descriptions code Fault codes Compressor actual frequency Compressor driving frequency Compressor target frequency Compressor exhaust temperature Outdoor suction temperature Outdoor ambient temperature Outdoor coil temperature Outdoor defrosting temperature P.10 IPM module temperature P.11...
- Page 43 9.FIELD SETTING 48K/60K ● ● ● Decrease Select Increase There are 3 buttons on the digital display board： 1) SWITCH button: Indoor parameters and outdoor parameters can be selected in turn by pressing it. “P.”/“H.”-outdoor unit parameter 2) INCREASE button: Each time it is pressed, the number rises by 1, hold down it, the number will be rapidly increased;...
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Page 44: Piping Work And Refrigerant Charge
10.PIPING WORK AND REFRIGERANT CHARGE 10. Piping work and refrigerant charge 10.1 MAX. length allowed Pipe length L Indoor unit Height difference H Outdoor unit Add. Max. Height Max. Pipe Refrigerant Model difference length (L) [exceed 25ft 7.6m] 0.38(oz/ft) 164ft. (50m) 98ft. -
Page 45: Air Tight Test
10.PIPING WORK AND REFRIGERANT CHARGE 10.3 Air tight test Do use nitrogen when performing air-tight test. Connect the gauge manifold using charging hoses with a nitrogen cylinder to the check joints of the liquid line and the gas line stop valves. Perform the air-tight test. Don't open the gas line stop valves. -
Page 46: Installation Tools And Installation Flow Chart
11.INSTALLATION TOOLS AND INSTALLATION FLOW CHART 11. Installation tools and installation flow chart 11.1 Necessary tools and instrument list for installation Necessary Tools and Instrument List for Installation Tool Tool Tool Tool Handsaw Copper Pipe Bender Spanner Leveler Clamper for Solder- Phillips Screwdriver Manual Water Pump Charging Cylinder... -
Page 47: Installation Flow Chart
11.INSTALLATION TOOLS AND INSTALLATION FLOW CHART 11.2 Installation flow chart Drawing audit Preparation before installation Confirm installation location of indoor unit and outdoor unit Indoor unit installation Drain piping Refrigerant piping Electrical wiring Duct installation installation installation Heat insulation Outdoor unit installation Vacuum pumping and leakage detection Additional refrigerant charge... -
Page 48: Control Mode
12.CONTROL MODE 12. Control mode Control function 1. Cooling Anti-Freeze Protection The outdoor pressure sensor functions as real time temperature detector of evaporator. It prevents the indoor unit evaporator temperature becoming too low. If the indoor coil temperature is too low, the compressor will automatically start protection mode. 2. -
Page 49: Sensor Parameter
13.SENSOR PARAMETER 13. Sensor parameter 1. THE PARAMETER OF OUTDOOR COMPRESSOR DISCHARGE TEMPERATURE SENSOR: =187.25K±6.3%；R =3.77K±2.5K；B0/100=3979K±1%) DR: Deviation Rate DR(MIN)%=（Rmin-Rnom）/Rnom*100% DR(MAX)%=（Rmax-Rnom）/Rnom*100% Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [ ℃ ] 908.2603 985.5274 1065.1210 -7.84... - Page 50 13.SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [ ℃ ] 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 59.6306 62.9395 66.2324...
- Page 51 13.SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [ ℃ ] 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 7.0891 7.3202 7.5499...
- Page 52 13.SENSOR PARAMETER 2. THE PARAMETER OF THE OTHER SENSOR:(R =15K±2%;B0/100=3450K±2%) DR: Deviation Rate DR(MIN)%=（Rmin-Rnom）/Rnom*100% DR(MAX)%=（Rmax-Rnom）/Rnom*100% Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [℃] 60.78 64.77 68.99 -6.16 6.12 57.75 61.36 65.16 -5.88 5.83 54.89 58.15...
- Page 53 13.SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 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 4.864 5.072 5.286 -4.10 4.05...
- Page 54 13.SENSOR PARAMETER Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% T [℃] 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 0.7604 0.8223 0.8888 -7.53 7.48...
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Page 55: Troubleshooting
14. TROUBLESHOOTING 14. Troubleshooting 14.1Trouble guide Troubleshooting for normal malfunction Troubleshooting Possible Reasons of A bnormality How to Deal With 1. Check power supply circuit; 2. Measure insulation resistance to 1. Power supply failure; ground to see if there is any 2. - Page 56 14. TROUBLESHOOTING Outdoor unit 24K/36K DC-Inverter unitary (Main control board upside-down) 1) Fault code displayed by LED lamps on outdoor main control board. There are 3 LED lamps on control board, LED1, LED2 and LED3. LED1 indicates the ten's place of the fault code, LED2 indicates the unit's place of the fault code and LED3 indicates outdoor drive control fault.
- Page 57 14. TROUBLESHOOTING 2) Display by 7 segment display board. Fault code will be displayed directly on 7 segment display board. 48K/60K Main control fault display Fault code will be displayed by 7 segment display on main control board. Display ERROR code. : Show failure occur.
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Page 58: Fault Codes
14. TROUBLESHOOTING 14.2 Fault codes The following is the fault code table of outdoor units. Table 1 Outdoor fault code Fault Fault description How to deal with Remarks Possible reasons for abnormality code 1.Reconnect the outdoor 1.The outdoor ambient temperature ambient temperature sensor;... - Page 59 14. TROUBLESHOOTING Fault Fault description How to deal with Remarks Possible reasons for abnormality code 1. Reconnect the wiring of the 1. The wiring of the overload overload protector; protector is connected loosely. 2. Replace the overload 2. The overload protector fails . protector;...
- Page 60 14. TROUBLESHOOTING Fault Fault description How to deal with Possible reasons for abnormality Remarks code There are many reasons for this failure. You can check the driver board fault LED to further analyze See attached "analysis of the the fault code of the drive board and IPM fault driving board fault".
- Page 61 14. TROUBLESHOOTING NOTE 1: If the indoor unit can not start or the indoor unit stops itself after 30s, at the same time the unit does not display the fault code, please check the fire and the socket of the control board. NOTE 2: If the indoor unit displays 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 to see whether short circuit...
- Page 62 14. TROUBLESHOOTING Table 2 Drive fault code (24K/36K) Fault Fault description Possible reasons for abnormality How to deal with code Inverter DC voltage overload fault 1. Power supply input is too high 1. Check power supply； Inverter DC low voltage fault or too low;...
- Page 63 14. TROUBLESHOOTING Table 3 Drive fault code (48K/60K) Fault Fault description How to deal with Possible reasons for abnormality code 1. Check the wire of the compressor; 1. Compressor wire is not connected properly; 2. Change the driver board ; 2.
- Page 64 14. TROUBLESHOOTING Fault Fault description How to deal with Possible reasons for abnormality code 1. Voltage input is too low; 1. Check the power supply. Low DC voltage 200V 2. Drive board fault. 2. Change the driver board. Driver board read EE 1.
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Page 65: Checking Components
15.CHECKING COMPONENTS 15. Checking components 15.1 Check refrigerant system TEST SYSTEM FLOW: Conditions: ① Compressor is running. The air condition should be installed in good ventilation. Tool: Pressure Gauge Technique: ① see ② feel ③ test See ----- Tube defrost. Feel ----- The difference between tube’s temperature. -
Page 66: Check Parts Unit
15.CHECKING COMPONENTS Heating mode Test system pressure. Is the high The pressure on the pressure normal at high side. service part ? Recharge refrigerant Remove the back after air purging with The pressure on the panel."see"the the vacuum low side. capillary tube1 and pump. - Page 67 16.CHECKING COMPONENTS Thermal Sensor DC Inverter Power & Controller Compressor Test in resistance. TOOL: Multi-meter. Test the resistance of the winding. The compressor fails if the resistance of winding is 0 (short circuit)or∞(open circuit). Familiar error: 1) Compressor motor lock. 2) Discharge pressure value approaches static pressure value.
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Page 68: Disassembly And Assembly For Compressor And Motor
16.DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR 16. 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 69 16.DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR Outdoor unit 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, handle and valve cover;...
- Page 70 16.DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR Outdoor unit 48K/60K 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, handle and valve cover.
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Page 71: Control Logic Description
17. CONTORL LOGIC DESCRIPTION 17. Control logic description 17.1 An illustration to outdoor unit signal (1) Communication between indoor and outdoor units: The communication between the outdoor unit, thermostat and the indoor unit is achieved through 24V alternating current, as shown in figure below. The thermostat controls the signal output of Y and B, and the outdoor unit identifies its operation mode according to these two signals. - Page 72 17. CONTORL LOGIC DESCRIPTION Compressor running rules: When the unit starts up in cooling mode, the compressor starts to work, and adjust its operating frequency according to the system target pressure and the actual pressure. If the actual pressure is higher than the target pressure, the compressor frequency will rise; if the actual pressure is lower than the target pressure, the compressor frequency decreases;...
- Page 73 17. CONTORL LOGIC DESCRIPTION ③ When the compressor signal and 4-way valve signal received from the thermostat are high level, that is Y-C and B-C are high level, the unit restores the normal target pressure to operate or when the compressor has operated for 30min【e2】with the decreased target pressure, it is taken as it has stopped operating.
- Page 74 17. CONTORL LOGIC DESCRIPTION 17.5 Condenser High-temperature Protection DC-Inverter outdoor unit AC will enter T3 protection if any of the following conditions is satisfied. Condition1: Cooling mode: When the outdoor coil temp. T3 keeps higher than T2 for 10 seconds, the compressor and outdoor fan will shut off.
- Page 75 Product improvement, specifications and appearance in this manual are subject to change without prior notice.