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Haier AB422XCBAA Service Manual

Free multi series commercial air conditioner
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  • Page 2 13. Air volume and external static pressure curves...
  • Page 8: Table Of Contents

    2. Specifications Item Model AU282XHBAA Function Cooling Heating —— Capacity 28000 33000 BTU/h Capacity 8200 9700 Total power input 3300 3200 Max. power input 3800 3800 EER or COP 2.50 3.05 Dehumidifying capacity 10‐³×m³/h Power cable 3 × 3.0mm —— Communication cable 8x(0.75~1.25mm ——...
  • Page 9: Cc (Rb68Af/T68/Α68Tf)

    Item Model AU422XIBAA Function —— Cooling Heating Capacity BTU/h 42000 48000 Capacity 12500 14000 Total power input 5600 5600 Max. power input 6300 6300 EER or COP 2.23 2.50 Dehumidifying capacity 10‐³×m³/h Power cable 3 × 5.0mm —— Communication cable 8x(0.75~1.25mm ——...
  • Page 10: Fan Type × Number -- Axial

    Item Model AU84NXTBAA Cooling Heating Function —— 88000 100000 Capacity BTU/h 26000 30000 Capacity 11000 11000 Total power input 13000 13000 Max. power input 2.36 2.73 EER or COP 4 × 5.0mm Power cable —— 8x(0.75~1.25mm Communication cable —— 3, 380~400, 50 Power source N, V, Hz Running / Max.Running current...
  • Page 11: Speed R/Min

    Item Model AS072XCBAA AS092XCBAA Function Cooling Heating Cooling Heating —— Capacity 7000 8000 9000 10000 BTU/h Capacity 2000 2300 2600 2900 Dehumidifying capacity 10‐³×m³/h 3 × (1.0~1.5mm Power cable —— 2x(0.75~1.25mm Communication cable —— Power source N, V, Hz 1, 220~230, 50 Running current A / A 0.10...
  • Page 12 Item Model AF072XCBAA AF092XCBAA Function —— Cooling Heating Cooling Heating Capacity BTU/h 7000 8000 9000 10000 Capacity 2000 2300 2600 2900 Dehumidifying capacity 10‐³×m³/h 3 × (1.0~1.5mm Power cable —— 2x(0.75~1.25mm Communication cable —— Power source N, V, Hz 1, 220~230, 50 Running current 0.25 0.25...
  • Page 13 Item Model AB072XCBAA AB092XCBAA Function —— Cooling Heating Cooling Heating Capacity BTU/h 7000 8000 9000 10000 Capacity 2000 2300 2600 2900 Dehumidifying capacity 10‐³×m³/h 3 × (1.0~1.5mm Power cable —— Communication cable 2x(0.75~1.25mm —— Power source N, V, Hz 1, 220~230, 50 Running current 0.20 0.20...
  • Page 14 Item Model AE072XCBAA AE092XCBAA Function —— Cooling Heating Cooling Heating Capacity BTU/h 7000 8000 9000 10000 Capacity 2000 2300 2600 2900 Dehumidifying capacity 10‐³×m³/h Power cable —— 3 × (1.0~1.5mm Communication cable —— 2x(0.75~1.25mm Power source N, V, Hz 1, 220~230, 50 Running current 0.23 0.23...
  • Page 15: Motor Output Power W

    AE212XCBAA AB212XCBAA Item Model Cooling Heating Cooling Heating Function —— 21000 24000 21000 24000 Capacity BTU/h 6150 7000 6150 7000 Capacity Dehumidifying capacity 10‐³×m³/h 3 × 0.75mm Power cable —— 2x(0.75~1.25mm Communication cable —— 1, 220~230, 50 Power source N, V, Hz Running current 1.35 1.35...
  • Page 16 AB282XCBAA AB422XCBAA Item Model Cooling Heating Cooling Heating Function —— 28000 31000 42000 48000 Capacity BTU/h 8200 9100 12000 14000 Capacity Dehumidifying capacity 10‐³×m³/h 3 × 0.75mm Power cable —— 2x(0.75~1.25mm Communication cable —— 1, 220~230, 50 Power source N, V, Hz Running current 0.30...
  • Page 17 AD282XHBAA AD422XHBAA Item Model Cooling Heating Cooling Heating Function —— 28000 31000 42000 48000 Capacity BTU/h 8200 9100 12000 14000 Capacity Dehumidifying capacity 10‐³×m³/h 3 × 0.75mm Power cable —— 2x(0.75~1.25mm Communication cable —— 1, 220~230, 50 Power source N, V, Hz Running current 1.10 1.10...
  • Page 18 Installation state: the unit should be placed on the flat floor or be mounted in horizontal direction. Testing method: standing-on-floor unit: If the unit cooling capacity is over 28000W, the noise level should be measured at mounting-on-ceiling unit: the front, left, right directions respectively. mounting-on-wall unit: built-in-ceiling unit: duct unit without auxiliary duct:...
  • Page 19 outdoor unit: 1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right directions. 2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right directions. measured point: H ( height to the ground) = (h (unit height) + 1m) /2 and, it is 1m to each side.
  • Page 20 33. Dimensions 3.1 Outdoorrunit dimensions AU282XHBAA 1024 1024 AU422XIBAA Terminal block screw hole (M10) >10cm >15cm -20-...
  • Page 21 AU84NXTBAA -21-...
  • Page 22 3.2 Indoorrunit dimensions Model: AB072~AB142 (mm) Model: AB21~28 860-890 (ceiling hole) 680 (hang position) air discharge hole (mm) -22-...
  • Page 23 Model: AB42 1250~1280 (ceiling hole) 1340 1070 (hanging position) 1230 (mm) Model: AE07~21 -23-...
  • Page 24 Model: AD28 (mm) Model: AD42 1105 1200 1320 (mm) -24-...
  • Page 25 Model: AF07~14 Model: AS07~14 -25-...
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  • Page 31 Panel application for cassette units panel function description applicable unit model with elevating function, for 630*630 R407C&R22 unitary free fixed frequency&inverter PB-630IA panel AB09~18, R407C&R22 free multi 07~18 R407C&R22 unitary freefixed frequency&inverter without elevating function, for 630*630 AB09~18, R407C&R22 free multi 07~18,R407C H- PB-630IB panel MRV 09~18, R407C C-MRV 09~16, R22 H-MRV...
  • Page 32: Controller Functions

    5. Controller functions 5.1 Wired controller Wired controller YR-E12, used for free multi units except for the wall mounted unit and console unit Buttons function: MODE:used for select indoor operation mode. FAN:used for select indoor air flow. SWING:used for setting indoor swing mode. HEALTH:used for setting indoor health function.
  • Page 33 [FAN] [HIGH]:high fan speed [FAN] [MED]: medium fan speed [FAN] [LOW]: low fan speed [FAN] [FIX]: fixed fan speed, it will display only when fixed fan speed is requested to main indoor unit. [CENTRAL]: central control mode [OPERATION] :running mode [STAND BY] :...
  • Page 34 AUTO operation, COOLING, HEATING and DEHUMIDIFICATION operation 1) Start up operation: press the button of ON/OFF, the system will start up, and will display [MODE][AUTO];[FAN][AUTO];[ROOM TEMP.]+“24℃” ;[CLOCK]+”12:00”. 2) Select MODE: press the MODE button, then you will see in the display section [MODE] switch over in below sequence:[FAN ONLY]→[COOL]→[DRY]→[HEAT]→[AUTO]→[FAN ONLY].
  • Page 35 TIMER ON, press [TIMER]. [TIMER][ON] will be constant on. Then [TIMER] [OFF] flashes, press the clock +/- button to adjust the time of TIMER OFF, press [SET]. The time sequence of timer on and timer off will determine the mode is [TIMER] [ON] →[OFF] or [TIMER] [OFF] →[ON].
  • Page 36 CENTRAL control function When the central controller selects [CENTRAL] mode, the buttons in the wired controller except for [CHECK] will be invalid. VENTILATION mode (only for the unit with fresh air function or heat recovery function) Press [RECOVERY] button, then the unit will switch over the ventilation mode: [VENTILATION][AUTO] [VENTILATION][RECOVERY] →...
  • Page 37 Preset ――― Outdoor total capacity Actual value, decimal In check mode, press [CHECK] to quit the check mode, and go into normal running mode. How to change the function switches? Type State of Function description switch Changeover Wired Connected Central controller controller central Cut off...
  • Page 38 There is no lock function only in the wired controller. But when it is connected with a central controller, if the central controller is set to “central”, the buttons in the wired controller will be invalid, or the buttons will be valid. Failure code: Failure remote...
  • Page 39 sensor abnormal short circuit for more than 2m continuously Solenoid valve Solenoid valve ○ abnormal incorrectly times continuously Discharging temp. Sensor broken down or ○ sensor abnormal short circuit for more than 2m continuously EEPROM abnormal EEPROM data missing Run as the default value Pressure...
  • Page 40 If you use central control type, SW1, SW2 will be used simultaneously. Wiring request in central control type: port A-B is connected with indoor port CN16(A-B) through 2-core shield wire. Requirements: 1. Port A connects with port CN16(A)of all indoor units. 2.
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  • Page 44 Electrical functions of wired controller: 1.Function difference between master wired controller and slave one: Contrastive items Master wired controller Slave wired controller Function All of functions Only with below functions: ON/OFF, MODE, FAN SPEED, SET TEMP., SWING 2. Function difference between simple wired controller and the standard one: Contrastive item Standard wired controller Simple wired controller...
  • Page 45 connected with indoor unit is called master one, the other is called slave one. Master wired controller and indoor unit; master and slave wired controllers are all connected through 3 pieces of polar wire. 3. Communication wiring: The wired controller is equipped with special communication wiring in the accessories.
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  • Page 60 " " " " " " MONITER CENTRAL R EMOTE UNIT TEMP AUTO TIMER ON EVERY DAY TIMER OFF ROOM TEMP CENTRAL MODE FAN TIME TIMER SELECT REMOTE TEMP. TIME CONFIRM LOCK -60-...
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  • Page 63 91.5mm MONITER CENTRAL R EMOTE UNIT TEMP AUTO TIMER ON EVERY DAY TIMER OFF ROOM TEMP CENTRAL MODE FAN TIME TIMER SELECT REMOTE TEMP. TIME CONFIRM LOCK -63-...
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  • Page 65 6. Refrigerant Circuit AU282XHBAA: -65-...
  • Page 66 AU422XIBAA: -66-...
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  • Page 94 7.6 Installation for AS07/09/12/142XCBAA Please read these "Safety Precautions" first then accurately execute the installation work. The precautionary points indicated herein are divided under two headings: WARNING and CAUTION those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section.
  • Page 95 PRECAUTION Execute proper grounding. Do not connect the earth wire to a gas pipe, water pipe, lightening rod, or a telephone ground wire. Improper placement of earth wires can result in electric shock. An electric leakage breaker must be installed, otherwise electric shock or other accidents would occur.
  • Page 96 1.Accessories Confirm accessories shown below are attached in the bag with this Installation manual. Accessories Delivered with Your Air Conditioner Please check if your unit is delivered with the following accessories. Cement Expansion Piping hole Screw Plastic Remote Batteries Mounting plate x 4 25 screw Name Drain hose...
  • Page 97 When the mounting plate is firstly fixed 1. Carry out, based on the neighboring pillars or lintels, a proper leveling for the plate to be fixed against the wall, then temporarily fasten the plate with one steel nail. 2. Make sure once more the proper level of the plate, by hanging a thread with a weight from the central top of the plate, then fasten securely the plate with the attachment steel nail.
  • Page 98 Other direction piping Cut away, with a nipper, the lid for piping according to the piping direction and then bend the pipe according to the position of wall hole. When bending, be careful not to crash pipes. Connect beforehand the indoor/outdoor electric cable, and then pull out the connected to the heat insulation of connecting part specially.
  • Page 99 Fig. 18 Screw with special washer Insulation tube Screw with Cord clamp special washer Round terminal Round Terminal terminal board Wire Wire Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube. Check the Layout of the Drain Pipe and Connection Wires The drain pipe should be placed underneath, and the connection wires should be placed upside;...
  • Page 100 Wiring connection between I.U&O.U. Outdoor To power supply Indoor To power supply -100-...
  • Page 101 7.7 Installation of outdoor 7.7.1 Capacity combination and outdoor installation ■AU282XHBAA capacity combination The unit capacity and performance mode: (A stands for A system, B stands for B system. For testing result, we will not recommend 12000BTU/h unit to you) AU282XHBAA+072XCBAA*4 as followings: AF072*1 AF072*1...
  • Page 102 AU282XHBAA+09XCBAA*2+14XCBAA*1 AF092*1 AF142*1 AF092*2 AF092*2 AF142*1 Performance mode AS092*1 AS142*1 AS092*2 AS092*2 AS142*1 AB092*1 AB142*1 AB092*2 AB092*2 AB142*1 AE092*1 AE142*1 AE092*2 AE092*2 AE142*1 12000 14000 14000 28000 Nominal capacity(BTU/h) 1550 1550 1550 3100 cooling Rated power input(W) : 15.0 Rated current(A) 9000 16000 16000...
  • Page 103 1 TO 3 Outdoor unit Indoor units 1 TO 2 Outdoor unit Indoor units Admissible pipe length and drop between the units: a. Max. single distance piping length of unit A 1、unit A2 、unit AB1、unit B2: 25m; b. Max. drop between A1 unit and A2 unit、B1unit and B2 unit:5m; Refrigerant recharge: Distribute pipes for unit A1、unit A2、unit B1、...
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  • Page 108 ■ AU422XIBAA capacity combination The unit capacity and performance mode: (A stands for system A, B stands for system B) Performance data of combination “AU422XIBAA+122X*BAA × 4” as followings: AF122*1 AF122*1 AF122*2 AF122*2 AF122*2 AF122*2 Performance mode AS122*1 AS122*1 AS122*2 AS122*2 AS122*2 AS122*2...
  • Page 109 Pipe connections: 1 TO 4 Outdoor unit Indoor units 1 TO 3(except for 21000BTU/h units) Outdoor unit Indoor units 1 TO 2(except for 21000BTU/h units) Outdoor unit Indoor units -109-...
  • Page 110 Communication Wire connection: 1. The indoor unit whose liquid pipe is connected to A1 in A system is called unit A1, its communication wire of A1(3)、 A1(4) should be connected to A1(P)、A1(Q) respectively. 2. The indoor unit whose liquid pipe is connected to A2 in A system is called unit A2, its communication wire of A2(3) 、A2(4) should be connected to A2(P)、A2(Q) respectively.
  • Page 111 Special Installation Guide to 21000BTU indoor units on Free Multi system Only for outdoor unit AU422XIBAA working with 21000BTU indoor units 1. Special accessory pipes for 21000BTU indoor units: Changing pipe (1/2-5/8) Collecting pipe (1/4-3/8) φ 6.35 φ 9.52 φ 12.7 φ...
  • Page 112 ■AU84NXTBAA The following performance data are based on the nominal cooling or heating conditions. (A stands for A system, B stands for B system) AU84NXTBAA+282*4: AB282*2 AB282*2 AB282*2 AB282*2 Performance mode AB282*1 AB282*1 AD282*2 AD282*2 AD282*2 AD282*2 AD282*1 AD282*1 AB282+AD AB282+AD AB282+AD AB282+AD...
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  • Page 127 8. Electric control function: 8.1 Indoor unit 8.1.1 Cooling operation 8.1.1.1 Anti-freezed function of evaporator a. Be valid in cooling or defrost mode; be invalid in trial or heating mode. b. If the evaporator temperature is below -1 ℃ for 5 minutes, ourdoor fan and compressor will stop;...
  • Page 128 compensation of 5℃ will be valid. When Tr>Ts+4℃, the compressor and outdoor motor will be OFF, indoor motor will run at anti-cold air mode. When Tr<Ts+4℃,the compressor, 4-way valve and outdoor motor will run; indoor motor will run at anti-cold air mode. *Control of indoor motor: Manual control:set High/Med/Low/Auto speed due to the actual request.
  • Page 129 8.2 Electric funtions of outdoor 8.2.1 Control of the compressor, outdoor motor and 4-way valve 8.2.1.1 Outdoor fan motor control A. When system do not have overheating or over current protection, outdoor fan speed will vary with outdoor ambient temperature, as follows: a.
  • Page 130 Changing from heating mode to cooling mode, 3 minutes later, it is shut off. E. In heating mode, when indoor temperature has arrived the set one (sensor is OFF), 4-way valve will be shut off 3 minutes later. 8.2.1.4 Solenoid valve control Cooling mode: After the outdoor unit receives the Startup signal from indoor unit, the corresponding solenoid valve will open 10 seconds earlier than compressor startup.
  • Page 131 communication resumes normal, it can enter normal operation and cancel the failure. When all indoor units can not communicate normally, it shows communciation malfunction. 8.2.2.4 Solenoid valve control with single unit in cooling mode If indoor unit sends the “start-compressor” signal, the corresponding solenoid valve will open;...
  • Page 132: Outdoor Wiring Diagram

    AU282XHBAA: 0010573503 OUTDOOR WIRING DIAGRAM Capacitor Fan Motor LED3 CN19 CN25 Valve A1 LED6 Control PCB CN26 0010451214 Valve A2 CN27 Valve B1 CN28 Valve B2 CN29 Compressor A Unloading Valve A CN11 4-Way Valve A CN23 Unloading Valve B CN12 4-Way Valve B Compressor B...
  • Page 133: Indoor Unit

    AU84NXTBAA: Outdoor wiring diagram 0010575119 Transformer CN33 CN22 CN18 CN17 CN32 CN19 CN24 4-Way Valve B CN12 Unloading Solenoid Valve B CN23 4-Way Valve A CN11 Unloading Solenoid Valve A CN29 Valve B2 CN28 Compressor A Compressor B Control PCB Valve B1 CN27 Valve A2...
  • Page 134 AB212XCBAA, AB282XCBAA, AB422XCBAA: CIRCUIT DIAGRAM OF INDOOR UNIT 0010574152 REMOTE WIRED REMOTE CONTROLLER CONTROLLER RECEIVER CENTRALIZED CONTROLLER TRANS. CN12 CN16 CN13 RECEIVE BOARD (REMOTE) CN11 FLOAT SWITCH CN15 P4(N2) P3(N1) CN21 (L') (N') P2(N) CN22 CN10 P1(L) P5(N3) P6(N4) (ROOM/PIPE)
  • Page 135 AD282XHBAA, AD422XHBAA: CIRCUIT DIAGRAM OF INDOOR UNIT 0010575122 WIRED REMOTE CONTROLLER CENTRALIZED CONTROLLER TRANS. CN12 CN16 (REMOTE) CN11 FLOAT SWITCH CN15 P4(N2) P3(N1) CN21 (L') (N') P2(N) CN10 P1(L) P6(N4) (ROOM/PIPE) PIPING TEMP. ROOM SENSOR TEMP. FAN CAP. SENSOR FAN MOTOR W:White B:Black Y:Yellow OR:Orange BL:Blue...
  • Page 136 AS072XCBAA, AS092XCBAA, AS122XCBAA, AS142XCBAA: WIRING DIAGRAM INDOOR 0010573506 NEGATIVE IRON CONTACT NEGATIVE ION GENERATOR EARTH TERMINAL FAN MOTOR CN13 CN18 RECEIVER DISPLAY CN15 CN11 CN14 CN17 CN16 EMERGENCY SWITCH TRANSFORMER CN19 UP SWING MOTOR CN20 DOWN SWING Open Close MOTOR ROOM TEMP.
  • Page 137 10.1 PCB circuit diagram, printed diagram and ports functions AU282XHBAA, AU422XIBAA PCB circuit diagram: -137-...
  • Page 138 AU282XHBAA, AU422XIBAA PCB printed diagram: -138-...
  • Page 139 Ports functions: CN1: communication port between indoor and outdoor of system B CN2: connection port of ambient temp. and system B coil temp. sensor CN3: connection port of system A coil temp. sensor CN4: connection port of system B discharging temp. sensor CN5: connection port of system A discharging temp.
  • Page 140 AU84NXTBAA PCB circuit diagram: F6.3A,250VAC -140-...
  • Page 141 AU84NXTBAA PCB printed diagram: -141-...
  • Page 142 Ports functions: CN1: communication port between indoor and outdoor of system B CN2: connection port of ambient temp. sensor CN3: connection port of system B coil temp.sensor and discharging temp. sensor CN4: connection port of system A coil temp.sensor and discharging temp. sensor CN6: communication port between indoor and outdoor of system A CN8: secondary side output of transformer CN9: connection port of outdoor motor...
  • Page 143 AB, AE, AD units PCB circuit diagram: -143-...
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  • Page 145 AB, AE, AD units PCB ports function: Condition for the PCB data: 1.Working ambient temperature:-10℃~70℃, relative humidity:30%~95% 2.Preserved ambient temperature:-20℃~80℃,relative humidity:30%~95% 3.Power supply:220VAC、50/60Hz,voltage range:160V~250V 4.Precise of temperature control:±1℃ Port and definition P1——connect to external power supply, live line: L (220VAC) P2——connect to external power supply, neutral line: N (0VAC) P3、4、5、6——control external load, neutral line: N1、N2、N3、N4(0VAC) P7——control external load, electrical heat: HEAT (control output 220VAC)
  • Page 146 lamp 0VDC,6. signal output of power lamp 0VDC, 7. signal output of water pump running lamp 0VDC) CN14——control external load, auto elevating function (1. signal of door switch close, 2. output of elevating direction control 0VDC, 3. output of elevating power control 0VDC, 4. power supply 12VDC) CN15——input signal, detecting water level of float switch (1-3 short circuit is normal, cut off shows that level exceeds the limitation).If float switch cuts off or occurs other failure, LED1 will flash 10 times.
  • Page 147 AF07~142XCBAA main control PCB circuit diagram: B2B-XH -147-...
  • Page 148 AF07~142XCBAA power supply board, remote receive board, function selection circuit diagram: -148-...
  • Page 149 AF07~142XCBAA PCB printed diagram: -149-...
  • Page 150 Ports functions of main control board: CN1: power supply neutral wire input port CN2: power supply live wire input port CN3, CN4: power supply live wire and neutral wire input of filter board CN5: upper motor control port CN6: lower motor control port CN7: lower motor feedback signal input port CN8: communication port between indoor and outdoor CN12: PCB low-voltage power supply input port...
  • Page 151 AS07~142XCBAA PCB circuit diagram: HEALTH POWER BLUE GREEN BLUE GREEN GREEN BLUE TIM E POWER HEALTH 0.01uF*120 450V 1.2UF -151-...
  • Page 152 AS07~142XCBAA PCB printed diagram: Ports functions: CN1: to remote receive board CN10: transformer secondary output CN19, CN20: fresh air function control port CN11: transformer primary input CN2: to outdoor communication port CN12: fan motor connection port SW2: emergency switch CN13: power supply neutral wire input port CN3: swing motor control port CN14: power supply live wire input port SW1: used to select room card function...
  • Page 153: Sensor Characteristic

    001A3800091 2.R25=5KΩ±1% B25/50=3450K±1% R25=5KΩ±1% 0010450951 001A3800090 ambient temperature sensor B25/50=3450K±1% AB282XCBAA ambient and coil temperature R25=10KΩ±3% 001A3900006 001A3900004 AB422XCBAA sensor B25/50=3700K±3% R25=23KΩ±2.5% 001A3900005 001A3900003 ambient temperature sensor B25/50=4200K±3% AD282XHBAA R25=10KΩ±3% 001A3800128 001A3900004 coil temperature sensor AD422XHBAA B25/50=3700K±3% R25=10KΩ±3%...
  • Page 154 R25=5KΩ±1% R25=5KΩ±1% R25=23KΩ±2.5% R25=23KΩ±2.5% B25/50=3450K±1% B25/50=3450K±1% B25/50=4200K±3% B25/50=4200K±3% T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) 47.12 5.235 281.34 24.12 -20℃ 24℃ -20℃ 24℃ -19℃ 45.17 25℃ -19℃ 263.56 25℃ 43.24 4.778 247.04 21.94 -18℃ 26℃ -18℃ 26℃ 41.35 4.567 231.66 20.94 -17℃...
  • Page 155 R80=50KΩ±3% R80=50KΩ±3% R25=10KΩ±3% R25=10KΩ±3% B25/80=4450K±3% B25/80=4450K±3% B25/50=3700K±3% B25/50=3700K±3% T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) 11600 536.6 90.79 6.95 -20℃ 10860 511.1 85.72 6.68 10170 486.9 80.96 5.43 9529 76.51 8932 442.3 72.33 5.59 8375 421.7 68.41 5.73 7856 402.1 64.73 5.52...
  • Page 156 11. Failure code and troubleshooting 11.1 Free multi outdoor unit fault code: Outdoor lamp flash times Fault code Discharging A pipe temp. too high Outdoor coil A temp. sensor failure Outdoor ambient temp. sensor failure Air outlet A temp. sensor failure Outdoor coil B temp.
  • Page 157 11.2 For wall mounted type and the console type unit, their failure code is below: Failure description Flash times of indoor receiver Code on wired board controller (YR-E06) ⊙ Power LED flashes 1 time Room temp. sensor abnormal ⊙ Power LED flashes 2 times Indoor coil temp.
  • Page 158 11.3 For cassette unit and duct unit, the failure code as follow: Failure remote central code on type, control, Failure description Reason Remarks wired flash failure controller times code 08(08H) Drainage system Float switch broken down ○ abnormal more than continuously 01(01H) Indoor ambient temp.
  • Page 159 2m continuously 13(0DH) Solenoid valve Solenoid valve ○ abnormal incorrectly times continuously 76(4CH) Discharging temp. Sensor broken down or ○ sensor abnormal short circuit for more than 2m continuously 05(05H) EEPROM abnormal EEPROM data missing Run as the default value 84(54H) Pressure Low pressure switch acts in...
  • Page 160 11.4 Troubleshooting 1) Troubleshooting (before replacement of PCB) Service call For example: no cooling, etc. Fault confirmation 1.Is supply voltage acceptable? Confirm operating 2.Is temperature setting correct? (e.g. too high) conditions 3.Is system in TIMER mode? 4.Is user aware of product features, etc. Is the feature not Explain product available for present...
  • Page 161 2) Sensor failure check if the wiring is correct according to reconnect wiring diagram if sensor is fixed Relocate well Is sensor short-circuit Replace sensor or open-circuit? Is sensor resistance Replace sensor acceptable? Is DC voltage between both ends of sensor near 5V or 0V? Replace PCB 3) EEPROM failure...
  • Page 162 4) Communication error between indoor and outdoor units Confirm commumication failure according to the fault code list Confirm the fault indicator is communication failure Are communication wire Does indoor communication P, Q connected contrarily re-wiring indicator flash? and supply wires L and N properly connected? Is communication wire too close to power cable, which...
  • Page 163 6) External alarm An external alarm is identified according to the list of fault codes Solve problem Is an external alarm accordingly connected to the system? Is ALARM terminal in mainboard disconnected? Short connect that terminal if failure disappear after PCB is changed replace PCB 7) Pressure protection...
  • Page 164 8)Compressor discharging temperature protection start Are stop valves in suction pipe and open valves liquid pipe of outdoor unit open? Is discharging temperature Is discharging temperature detected replace discharging sensor sensor in good condition? by a thermometer too high? replace PCB Are high pressure and If the pipe is Are they too low?
  • Page 165 9) Low pressure protection Confirm the fault according to the fault code list Are connectors of pressure switch in good Check and reconnect condition? Is low side pressure switch Replace PCB activated? (If not, DC voltage is 0V.) Is the low side pressure detected by the gage lower than threshold value? Replace low pressure The threshold value is indicated on...
  • Page 166 10) High pressure protection Confirm the fault according to the fault code list Are connectors of pressure switch in good Check and reconnect condition? Is high side pressure switch Replace PCB activated? (If not, DC voltage is 0V.) Is the high side pressure detected by Replace high pressure the gage higher than threshold value? The threshold value is...
  • Page 167 11) Fault in drain system confirm the malfunction according to the fault code list Unclog pipe and Is drain pipe clogged? water pump Is pump motor in Replace water good condition? pump Is drain pan dirty and Clean drain pan float switch ineffective? Is float switch holder tinted that float can't move, or too...
  • Page 168 12) Temperature cutoff protection confirm the malfunction according to the fault code list Does small relay coil Is outdoor four-way valve Relay is broken. of four-way valve have in good condition during Replace PCB a voltage of 12V DC? heating cycle? Does four-way Replace four-way valve work...
  • Page 169 13) Fault in indoor fan motor confirm the malfunction according to the fault code list Is indoor status Is output voltage of indication good? fan motor good? Is fan capacitor Is power supply good? Replace fan in good capacitor condition? Replace fuse Is fuse in good condition? when there is no...
  • Page 170: Performance Curves

    12. Performance curves 12.1 AU282XHBAA: Cooling capacity chart (kW) (change with the temperature) AU282XHBAA Indoor temp. Outdoor temp. D.B. / W.B. 18℃ 20℃ 25℃ 32℃ 35℃/24℃ 40℃ 43℃ 46℃ 18/14℃ 20/15℃ 22/16℃ 25/18℃ 27/19℃ 30/22℃ 10.1 10.5 10.1 32/23℃ Power consumption chart (kW) (change with the temperature) AU282XHBAA Outdoor temp.
  • Page 171 AU282XHBAA+AE142XCBAA*2 performance curves cooling capacity-temperature table indoor temp. outdoor temp.(humidity 46%) DB/WB 18℃ 20℃ 25℃ 32℃ 35℃ 40℃ 43℃ 46℃ 18/12℃ 7147 7013 6864 6382 6067 5848 5523 5199 7581 7455 7322 6903 6908 6070 5796 5490 18/14℃ 7835 7688 7600 6970 7109...
  • Page 172 AU282XHBAA+AE142XCBAA*2 performance curves power consumption-temp. table outdoor temp.(humidity 46%) indoor temp. DB/WB 18℃ 20℃ 25℃ 32℃ 35℃ 40℃ 43℃ 46℃ 18/12℃ 2629 2703 2754 2996 3237 3370 3540 3702 18/14℃ 2674 2754 2796 3049 3170 3415 3573 3731 20/15℃ 2702 2783 2822 3165...
  • Page 173 AU282XHBAA+AE142XCBAA*2 performance curves air outlet temp.-ambient temp. table outdoor temp.(humidity 46%) indoor temp. DB/WB 18℃ 20℃ 25℃ 32℃ 35℃ 40℃ 43℃ 46℃ 18/12℃ 7.82 7.77 8.02 7.93 8.86 9.37 9.55 9.97 18/14℃ 9.32 9.34 9.46 9.83 9.88 10.43 10.74 10.87 20/15℃...
  • Page 174 AU282XHBAA+AE142XCBAA*2 performance curves sensible cooling value-temperature table outdoor temp.(humidity 46%) indoor temp. DB/WB 18℃ 20℃ 25℃ 32℃ 35℃ 40℃ 43℃ 46℃ 18/12℃ 6100 6064 5920 5843 5472 5160 4983 4837 18/14℃ 5191 5126 5059 4884 4859 4451 4322 4205 20/15℃ 5678 5631 5581...
  • Page 175 12.2 AU422XIBAA cooling capacity (KW) changing with indoor/outdoor temperature 16.0 18℃ 20℃ 14.0 25℃ 32℃ 12.0 35℃/24℃ 40℃ 10.0 43℃ 46℃ 18/14℃ 20/15℃ 22/16℃ 25/18℃ 27/19℃ 30/22℃ 32/23℃ indoor D.B./W.B. power comsumption changing with indoor/outdoor temperature 18/14℃ 20/15℃ 22/16℃ 25/18℃ 27/19℃...
  • Page 176 12.3 Heating performance curves heating capacity and indoor/outdoor temp. curves-AU28 13000 12000 20/15℃ 11000 20/12℃ 10000 9000 20/14.5℃ 8000 27/18℃ 7000 6000 outdoor temp. heating capacity and indoor/outdoor temp. curves-AU42 19000 17000 20/15℃ 15000 20/12℃ 13000 20/14.5℃ 27/18℃ 11000 9000 outdoor temp.
  • Page 177 Heating power input-indoor/outdoor temp curves --AU282XHBAA 4100 3900 —5℃ 3700 0℃ 3500 5℃ 3300 7℃/6℃ 3100 10℃ 2900 15℃ 2700 24℃ 2500 15/10℃ 18/13℃ 20/14.5℃ 27/18℃ indoor temperature(DB/WB) Heating power input-indoor/outdoor temp. curves-- AU422XIBAA 14500 13500 12500 —5℃ 11500 10500 0℃...
  • Page 178 13. Air volume and external static pressure curves Air volume and external static pressure curves --AE072XCBAA, AE092XCBAA super high high External static pressure(Pa) Air volume and external static pressure curves --AE122XCBAA, AE142XCBAA 1000 super high high External static pressure(Pa) Air volume and external static pressure curves --AE122XCBAA, AE142XCBAA 1200 1000...
  • Page 179 AD282XHBAA: AD422XHBAA: -179-...
  • Page 180 Commercial Air Conditioner MEMO...
  • Page 181 Haier Group Haier Industrial Park, No. 1 Haier Road 266001, Qingdao, China Tel: +86-532-8939486/9711 Fax: +86-532-8939715 E-mail: cactech@haier.com Http://www.haier.com All rights reserved and the information in this manual is subject to change without notice in order to make the information keep latest.