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Installation Manual
Commercial Air Conditioner
Service Manual
Model:
AU282FHAHA
Features:
●Single AC inverter compressor unit
●Central control by one central controller
●Auto-restart
●Max. 5 indoor units can be connected
●Refrigerant: R22
●Super long piping length and large drop
between indoor unit and outdoor unit
●Individual operation for every indoor uint, energy saving
● Negative ion generator(optional)
MANUAL CODE:SYJS-019-05 rev. 0
Edition：2005-01-25
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Table of Contents
Troubleshooting
Related Manuals for Haier AU282FHAHA
Summary of Contents for Haier AU282FHAHA
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Page 1: Service Manual
Commercial Air Conditioner Service Manual Model: AU282FHAHA Features: ●Single AC inverter compressor unit ●Central control by one central controller ●Auto-restart ●Max. 5 indoor units can be connected ●Refrigerant: R22 ●Super long piping length and large drop between indoor unit and outdoor unit ●Individual operation for every indoor uint, energy saving... -
Page 2: Table Of Contents
Commercial Air Conditioner Model: A282FHAHA CONTENTS Contents……..........…...………...……..1 1. Description of Products & Features…..………………...…….2 2. Specifications…………………………. ………………..……6 3. Safety precaution…………………………..…………………7 4. Net dimensions of outdoor unit……..…………......9 5. Installation instructions …………………..…. ………………..10 6. Parts and functions …………………..………..…… ..………..27 7. Remote controller functions………………………….………..28 8. -
Page 3: Description Of Products & Features
Commercial Air Conditioner Model: A282FHAHA 1. Description of product & features 1.1 Nomenclature 1：Product type symbol ( A stands for air conditioner) 2：Product model ( U stands for air conditioner outdoor unit) 34: Product specification ( 28 stands for nominal cooling capacity is 28000 BTU) 5：Applicable voltage ( 2 stands for 1PH/220 V/50 Hz) 6：Product series ( F stands for free combination) - Page 4 Commercial Air Conditioner Model: A282FHAHA 1.2 Outdoor unit parameters Nominal Indoor units capacity Max. Refrig Appearance Model capacity(BTU/h) connected(BTU/h) indoor erant units cooling heating Min. Max. AU282 28000 32000 14000 36000 5 FHAHA Note: 1. The designed capacity when installing(total capacity of indoor units connected to outdoor unit) <...
- Page 5 Commercial Air Conditioner Model: A282FHAHA 1.3 Types of indoor units capacity(BTU/h) type appearance model refrigerant cooling heating AB092FCAHA 9000 12000 AB142FCAHA 14000 17000 Four way cassette AB182FCAHA 18000 21000 Convertible AC182FCAHA 18000 21000 AE072FCAKA 7000 9000 AE242FCAKA 24000 28000 AE092FCAKA 9000 11000 Ceiling concealed...
- Page 6 Commercial Air Conditioner Model: AU282FHAHA 1.4. Character of Products 1) The length of horizontal refrigerant pipe can be 35m,the total pipe length can reach 50m, the height difference between indoor units and outdoor unit can reach 30m, the height drop between indoor units can be up to 10m. Refer to the figure below.
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Page 7: Specifications
Model:AU282FHAHA Commercial Air Conditioning Specifications Item Model AU282FHAHA cooling heating Function Capacity BTU/h 28000 32000 Capacity 8000 9500 Sensible heat ratio Nominal power input 3500 3000 Max. power input 4400 3500 EER or COP Dehumidifying capacity 10‐³×m³/h Power cable section... -
Page 8: Safety Precaution
Commercial Air Conditioner Model: A282FHAHA 3 SAFETY PRECAUTIONS Please read these "Safety Precautions" first then accurately execute the installation work. Though the precautionary points indicated herein are divided under two headings, WARNING those points which are related to the strong possibility of an installation done in error CAUTION WARNING resulting in death or serious injury are listed in the... - Page 9 Commercial Air Conditioner Model: A282FHAHA SAFETY PRECAUTIONS WARNING When setting up or moving the location of the air conditioner, do not mix air etc. or anything other than the designated refrigerant (please see nameplate) within the refrigeration cycle. Rupture and injury caused by abnormal high pressure can result from such mixing. Always use accessory parts and authorized parts for installation construction.
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Page 10: Net Dimensions Of Outdoor Unit
Commercial Air Conditioner Model: AU282FHAHA 4. Dimensional drawing of outdoor unit Screw Hole (M10) 1018 Power Wiring Terminal Power Wiring Distribution Hole >10cm More than 60cm >10cm >15cm >60cm Installation dimension of outdoor unit (mm) - 9 -... -
Page 11: Installation Instructions
Commercial Air Conditioner Model: AU282FHAHA 5. Installation instructions 5.1 Installation diagram of indoor & outdoor unit Notice: 1. Designed capacity (total capacity of the whole connected indoor units) while installation should be not over 130% of rated capacity of the outdoor unit . - Page 12 Commercial Air Conditioner Model: AU282FHAHA 3) Model: Indoor unit AS092FMAHA AC142FCAHA Outdoor unit Drop height between indoor and outdoor Drop height between units h 30m indoor h 10m 4) Model: Indoor unit AS092FMAHA AS142FTAHA Outdoor unit Drop height between indoor and outdoor...
- Page 13 Commercial Air Conditioner Model: A282FHAHA 5.2 Piping dimensions charts model liquid pipe gas pipe inch inch AU55 9.52 3/8" 19.05 3/4" AB09 6.35 1/4" 12.7 1/2" AB14 6.35 1/4" 12.7 1/2" AB18 9.52 3/8" 15.88 5/8" AC18 9.52 3/8" 15.88 5/8"...
- Page 14 Commercial Air Conditioner Model: AU282FHAHA FQG-B180 gas pipe heat preservation material liquid pipe heat preservation material Refrigerant pipes between manifold pipes Total refrigerating amount of indoor unit Gas side Liquid side group after the manifold pipe Less than 38220Btu/h 15.9 9.52...
- Page 15 Commercial Air Conditioner Model: AU282FHAHA In the file, the figure marked with "√" is permitted, and the figure marked with "×" is prohibited. You can confirm the position according to the actual condition. The refrigerant flow direction is always from the collective side to the divided side.
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Page 16: Contents
Commercial Air Conditioner Model: AU282FHAHA 5.4 The Order of Installation Work Item Work Main points Before installation Work division -to ascertain the person responsible for installation of pipes and wiring Make installation -to ascertain the pipe installation dimension and position of electronic... - Page 17 Commercial Air Conditioner Model: AU282FHAHA work is not met with the requirements, overturn of the unit will occur resulting in accidents. l The wiring work shall be done by a qualified person and referred to the “ technical standard of electric equipment” , “ indoor wiring regulation” and what the manual specified.
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Page 18: Installation Procedure
Commercial Air Conditioner Model: AU282FHAHA 5.6 Installation procedure Connection of pipes Warning After finishing installation, confirm the During installation, if refrigerant leakage refrigerant gas does not leak. occurs, take ventilation measurement If the refrigerant gas leaks in the room, immediately. - Page 19 Commercial Air Conditioner Model: AU282FHAHA Installation procedure Connection of pipe 3.Method of cutting and flaring pipe Dimension Diameter of pipe (mm) Cutting and flaring pipe 6.35mm(1/4") If using pipe cutter, the burs must be removed. Flarer 0.8~1.5 9.52mm(3/8") After inserting flaring machine, flare pipe nozzle to be bell-mouthed.
- Page 20 Commercial Air Conditioner Model: AU282FHAHA Installation procedure Connection of pipes 4.Pipe connection of the outdoor unit. Referring to the installation diagram in page 4, connect the indoor unit, outdoor unit, manifold pipe and electronic expansion valve together by using the pipe connection method and welding method.
- Page 21 Commercial Air Conditioner Model: AU282FHAHA Installation procedure Connection of pipes IV Vacuumizing of the pipes and indoor unit (using vacuum pump to vacuumize, it is strictly forbidden to use refrigerant purging) Choose of vacuum pump: it shall choose those that can reach a good vacuity ( Lower 200Pa ) and have a large air discharge amount (over 40L/min).
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Page 22: Specifications
Commercial Air Conditioner Model: AU282FHAHA Installation procedure Connection of pipes (4) Watch the status of outdoor unit compressor, disconnect the general power supply for the air conditioner assembly after the compressor unit starts. If the hi-pressure valve of the outdoor unit is 3-way valve: Without starting the machine, simply exhaust to vacuum (vacuum degree<200Pa) directly from... - Page 23 Commercial Air Conditioner Model: AU282FHAHA Installation procedure Refrigerant MRV central air conditioner uses refrigerant R22 . This refrigerant itself is inno- cuous, noncombustible safety refrigerant. But then, when arranging the air conditioner equ- ipment, it is necessary to take some steps to take precautions against in case of the in- doors refrigerant leakage.
- Page 24 Commercial Air Conditioner Model: AU282FHAHA 5.7 Electric wiring Electric wiring Note: The air conditioner must use special circuit (over 45A), and wiring by the qualified electrician according to the wiring rules specified in national standard. The grounding wire and the neutral wire shall be strictly separated. Connect the neutral wire with grounding wire is incorrect.
- Page 25 Commercial Air Conditioner Model: AU282FHAHA Wiring method of outdoor unit: Power line (connects from outdoor unit) Remove the repair board of the outdoor unit and loosen the wire cover A,then put the live wire, neutral wire and grounding wire through the wire cover A,and connect them to terminal block correspondingly.
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Page 26: Wiring Diagram
Commercial Air Conditioner Model: AU282FHAHA 5.8 Wiring diagram Note: When connecting power line to power supply terminal, please pay attention to the following items: 1. Do not connect the power line with different dimensions to the same connection wire end. - Page 27 Commercial Air Conditioner Model: AU282FHAHA 5.9 Check work After installation,please fill in the following form for easy daily maintenance: Model of indoor unit Factory No. of unit Site s tting No. Check for installation and test run Please operate the air conditioner according to the operation manual.
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Page 28: Parts And Functions
Commercial Air Conditioner Model: AU282FHAHA 6 PARTS AND FUNCTIONS 6 PARTS AND FUNCTIONS Air outlet Air inlet Servicing panel - 27 -... -
Page 29: Remote Controller Functions
Commercial Air Conditioner Model: AU282FHAHA 7 WIRE OR WIRELESS REMOTE CONTROLLER FUNCTIONS For detailed information please refer to service manual for AU55NFIAIA . - 28 -... -
Page 30: Refrigerant Diagram
Commercial Air Conditioner Model: AU282FHAHA 8.AU282FHAHA SYSTEM DIAGRAM 4-way valve 3-way stop valve Solenoid valve Capillary Discharging gas Suction gas Oil separator temperature temperature Pressure switch sensor Capillary sensor Gas &liquid Compressor separator Refrigerant Outdoor heat accumulator exchanger Strainer Electronic... -
Page 31: Electrical Control Functions
Commercial Air Conditioner Model: AU282FHAHA 9 ELECTRICAL CONTROL FUNCTIONS 9.1 Function of special remote controller (Address setting) 1. Read function symbol Press “read” button , “1” flashes 1 time 2. Signal emitting symbol when “2” flashes ,it shows that remote controller is giving signal to indoor unit. - Page 32 Commercial Air Conditioner Model: AU282FHAHA Function table for address setting controller After dehumification sign, emission sign, 8 sign, OFF sign, up arrow, down arrow display for 3 minutes, the controller will only display up arrow and down arrow power on...
- Page 33 Commercial Air Conditioner Model: AU282FHAHA Press "No. 6" button, 6 will flash, then press "SET" button at indoor unit. When a sound "du" of set No. 6 indoor unit is heard, unit 6 is set, then press "READ" to confirm if the unit number is right.
- Page 34 (For new-developed indoor unit,number setting method refers to the indoor unit user's manual .The detailed operation procedure is as follows: (The special remote controller for setting unit number shall be carried by Haier air conditioner installation technicians.) - 33 -...
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Page 35: Setting In Site
Commercial Air Conditioner Model: AU282FHAHA 9.1.2 Setting in site The whole machine has been completely installed and is initially energized. Set with the special remote controller within 1 m from the infrared ray receiver on the indoor unit in the following way: press numeric keys on the remote controller according to the desired unit number, the remote controller LCD displays the corresponding number, then press the "UNIT SET"... - Page 36 Commercial Air Conditioner Model: AU282FHAHA 9.2 Flow Chart for Operation (1) Unit number setting Start Power on Initialize electronic expansion valve Initialize louver position Read EEPROM contents, initialize program, if resume after power down indicators Having flash, waiting for the...
- Page 37 Commercial Air Conditioner Model: AU282FHAHA (2) Turn on/off unit Control function treat module Power indicator turn off, operation indicator turn On/off Trouble indication Trouble signal Mode determinatio Buzzer sound twice, Abnormal refuse receive operation n signal Choose mode Fan motor turn off,...
- Page 38 Commercial Air Conditioner Model: AU282FHAHA (3) Cooling operation Cooling operation Swing flap in the Swing cooling standard position Swing action Adjust fan speed according to temperature set and in Automatic air temperature fan speed Operate speed set Electronic expansion valve:...
- Page 39 Commercial Air Conditioner Model: AU282FHAHA (4) Dehumidifying operation Dehumidifying operation Swing flap in the cooling Swing standard position Swing action Adjust fan speed according to temperature set and in If enter cooling air temperature operation Determine dehumidify according temperature Electronic expansion valves...
- Page 40 Commercial Air Conditioner Model: AU282FHAHA (5) Heating operation Heating operation Swing flap in set fan speed Swing position Swing action side: wind off, Defrosting expansion valve steady Off side: Electronic expansion valve totally open Rated operation According temperature Fan motor operate in rated...
- Page 41 Commercial Air Conditioner Model: AU282FHAHA 9.3 Defrost operation Flow Chart 1. The compressor operates heating over 25 minutes, after meeting the defrosting condition, it is permitted to enter defrosting. Defrosting process is unit-stop defrosting mode. Determining condition of defrosting is as follows:...
- Page 42 Commercial Air Conditioner Model: AU282FHAHA 2. Compressor control The compressor will start at 10Hz and running between 30Hz to 120Hz. In operation the compressor running frequency is determined by three elements : the number of indoor units in operation , the temperature difference of each indoor units between setting temperature and room temperature , the size of each indoor unit.
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Page 43: Diagnostic Information(Trouble Shooting)
Commercial Air Conditioner Model: AU282FHAHA 10.Schedule of trouble Trouble schedule of indoor unit(Timer light indication) Flash time of trouble light Trouble of indoor unit Timer light flashes 1 time Thermostat of thin pipe (Ti) is in short circuit or open circuit state... -
Page 44: Troubleshooting
Commercial Air Conditioner Model: AU282FHAHA 10.2 Troubleshooting (1) Indoor unit trouble indication: timer indicator flashes (once, twice, 3 times, 7 times) Abnormal reasons: Heat sensitive resister is short circuit or open circuit The treatment to sensor output part in PC board is improper, such as poor contact of package part, the electrolytic capacitor for filtering is failed, etc. - Page 45 Commercial Air Conditioner Model: AU282FHAHA Treatment: use the DC voltage grade of multimeter to test the plastic sealed motor to find if there is any feedback signal, determine if the plastic sealed motor is abnormal. If normal, change the indoor unit PC board.
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Page 46: Electrical Data
Commercial Air Conditioner Model: AU282FHAHA Refrigerant leaks Discharging air temperature heat sensitive resistor is improper Electronic expansion valve or 2-way valve is closed Treatment: check if there is leakage part, test system pressure in rated operation state to determine if there is leakage? Check the state of electronic expansion valve and 2-way valve. -
Page 47: Outdoor Unit Wiring Diagram
Model: AU282FHAHA Commercial Air Conditioner OUTDOOR UNIT WIRING DIAGRAM 0010575375 FAN MOTOR 4-WAY SPURT OXYGEN VALVE VALVE PUMP Parts in dashed frame CAPACITOR are used for oxygen model. COMPRESSOR COMP. CN22 CN23 FUSE T30A250VAC CN10 CN11 POWER SUPPLY OUTDOOR UNIT PCB... - Page 48 Commercial Air Conditioner Model: AU282FHAHA 11.2 Some description of fuctions for the outdoor PCB (1).Function of several pins Symbols of pins used for trial Description of function(when the corresponding running, debugging, 2 pins is in short circuit state) HEAT Outdoor unit cooling forcibly at 50HZ...
- Page 49 Commercial Air Conditioner Model: AU282FHAHA 11.3 Resistance-Temperature character Value of the heat sensitive resistance of defrosting, suction air, outdoor ambient temperature, evaporator, gas pipe and liquid pipe. Temperature ( ) Resistance value (k ) Temperature ( ) Resistance value (k ) 53.0...
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Page 50: Exploded Views And Parts Lists
Commercial Air Conditioner MODEL:AU282FHAHA 12. EXPLODED VIEW AND PART LISTS - 49 -... - Page 51 Commercial Air Conditioning Model: AU282FHAHA Edition:2005/01/18 the proportion of No. in Spare parts description Spare parts number Qty. Model the spare-part Remark Failure rate view in English stock 001A5002108 Screw AU282FHAHA 0.0000% 0.0000% 001A0100122 Front guard assy AU282FHAHA 0.0000% 0.0000%...
- Page 52 Commercial Air Conditioner Model: AU282FHAHA Electrical Parts for AU282FHAHA) - 51 -...
- Page 53 Commercial Air Conditioning AU282FHAHA Model: Edition:2005/01/18 No. in Spare parts Spare parts description in the proportion of the Failure Qty. Model Remark spare-part stock view number English rate Electrical box 0010850382 assembly(containing No.2 AU282FHAHA 0.0200% 0.0240% to No.12) Electrolytic 001A3600125 AU282FHAHA 0.0300%...
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Page 54: Perdormance Curves
Commercial Air Conditioner Model: AU282FHAHA Characteristics of refrigerating and heating capacity 1) Calculation method Calculation method of refrigerating capacity-Refrigerating capacity to be known = Refrigerating capacity x (1) x (2) x (3) x (4) x (5) W (3) Capacity modification value... -
Page 55: Noise Level Charts
Commercial Air Conditioner Model: AU282FHAHA 14.Noise level curve for model AU282FHAHA 1. The data are based on the following conditions： (1) The data are measured in half- elimination laboratory； (2) The running frequency of outdoor unit is 90Hz. (3) Working mode: cooling Indoor temperature: 27℃DB,19℃WB;... -
Page 56: Noise Level Curve
Commercial Air Conditioner Model: A282FHAHA 2. Noise level curve 1700 3400 6800 NC-70 NC-60 NC-50 NC-40 NC-30 NC-20 Approximate threshold hearing for continuous noise. 500 1000 2000 4000 8000 Octave band frequency(Hz) Noise level curve for model AU282FHAHA - 55 -... - Page 57 Commercial Air Conditioner Model: A282FHAHA Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...
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