Haier AU122AEERA Service Manual
Service manual
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- Installation instructions manual (27 pages) ,
- Installation instructions manual (28 pages) ,
- Installation instructions manual (28 pages)
Table of Contents
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Commercial Air Conditioning
Features
High energy efficiency
Can be connected with the universal outdoor unit AU122AEERA
Infrared control type or wired control type
Low ambient cooling kit (optional) and low ambient heating kit (optional)
New friendly refrigerant R410a, environment protection
Advanced technology, DC inverter control function
Weekly timer (standard)
Group control function
Auto restart function
Room card function
Manual code: SYJS-020-07REV.0
SERVICE MANUAL
Models
AB122ACERA
AC122ACERA
AD122ALERA
AU122AEERA
Edition: 2007-05-15
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Table of Contents
Related Manuals for Haier AU122AEERA
Summary of Contents for Haier AU122AEERA
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Page 1: Service Manual
AD122ALERA AU122AEERA Features High energy efficiency Can be connected with the universal outdoor unit AU122AEERA Infrared control type or wired control type Low ambient cooling kit (optional) and low ambient heating kit (optional) New friendly refrigerant R410a, environment protection Advanced technology, DC inverter control function... -
Page 2: Table Of Contents
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA CONTENTS Contents………………………………………………………...2 1. Description of products & features………………………..3 2. Specification…………………………………………………7 3. Safety precaution…………………………………………..10 4. Net dimension………………………………………………12 5. Installation instructions………..…………………………...14 6. Parts and functions…………………………………………30 7. Controller functions…………………………………………32 8. Refrigerant circuit…………………………………………...33 9. Electrical control functions…………………………………34 10. -
Page 3: Description Of Products & Features
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.DESCRIPTION OF PRODUCTS & FEATURES 1.1. Products code explanation C 1 2 2 Climate type: T1 (see table 1) Design number (R stands for design sequence, DC inverter frequency type) Product type: A stands for heat pump type, refrigerant is R22... -
Page 4: Product Features
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.4 Product features Adopt the much friendlier refrigerant R410a The air conditioner system adopts the greatly friendly refrigerant R410a, which is protective for the ozone layer and is good to avoid the earth getting warmer. Benefit for the environment. - Page 5 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.5 New friendly refrigerant R410A introduction: ■R410A The working pressure of R410A is approximately 1.6 times higher than R22. Because the oil in the refrigerant is different, please do not mix them.
- Page 6 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA ■Piping material 1. Use the correct refrigerant piping and materials for R410A 2. For the pipe wall thickness, see the table below: Pipe diameter Φ6.35 Φ9.52 Φ12.7 Φ15.88 Φ19.1 Pipe wall thickness Note: Always observe and comply with the local regulations when installing the refrigerant piping.
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Page 7: Specification
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 2. SPECIFICATION item Mode AB122ACERA Function cooling heating Capacity 3.52(0.9--4.4) 4.4(1.0---4.8) Sensible heat ratio 0.71 Total power input 1250(280---1650) 1210(280--1650) Max. power input 1650 1650 2.81（C） 3.64（A） EER or COP ENERGY CLASS Dehumidifying capacity 10‐³×m³/h... - Page 8 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Item Model AD122ALERA Function cooling heating Capacity 3.8(0.9--4.4) 4.1(1.0---4.8) Sensible heat ratio 0.71 Total power input 1260(280--1650) 1260(280--1650) Max. power input 1650 1650 3.02（B） 3.25（C） EER or COP Dehumidifying capacity 10‐³×m³/h 3×2.5...
- Page 9 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20℃DB Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7℃DB/6℃WB The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter.
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Page 10: Safety Precaution
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 3. Safety precaution 3. Safety precaution Carefully read the following information in order to operate the airconditioner correctly. Below are listed three kinds of Safety Cautions and Suggestions. Incorrect operations may result in severe consequences of death or serious injuries. - Page 11 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA WARNING! Nothing or nobody is permitted to Installed electrical-leaking circuit placed on or stand on outdoor unit. breaker. It easily cause electrical shock without The falling of goods and people may circuit breaker.
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Page 12: Net Dimension
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 4. Net dimension 4.1 AB122ACERA 4.2 AC122ACERA... - Page 13 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 4.3 AD122ALERA 4.4 AU122AEERA...
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Page 14: Installation Instructions
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5. Installation Instructions... - Page 15 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA...
- Page 16 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA ¡...
- Page 17 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA AU122AEERA...
- Page 18 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5.2 Indoor unit ins allation 5.2.1 AB122ACERA Air outlet Air inlet Air outlet 1.5m 1.5m 2.5m Over Distance between suspending bolts 535mm Indoor unit 570mm Ceiling opening 650mm Ornament panel 700mm Overlap between ceiling and...
- Page 19 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 4. Installation of water drainage pipe (1) Install water drainage pipe Pipe diameter shall be equal or larger than that of connecting pipe (Pipe of polythene; size: 25mm; O.D.: 32mm ) Drainpipe should be short, with a downward slope at least 1/100 to prevent air bag from forming.
- Page 20 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1-1.5m slope over 1/100 Use the drainage hose and clip provided with unit. Insert water pipe into water plug until it reaches the white tape. Tighten the clip until head of the screw is less than 4mm from hose.
- Page 21 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Electric control box Panel limitation board installation (1)Install the panel board in the direction shown in the figure. (2)The incorrect direction will result in water leakage,meanwhile swing and signal receiving are displayed...
- Page 22 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5.2.2 AC122ACERA Wrap the insulation around the drain hose INSTALLATION PROCEDURE connection.(Fig.6) Install the room air conditioning unit as follows: (Fig. 6) Drain pan PREPARING INDOOR UNIT INSTALLATION FIRST REMOVE THE INTAKE GRILL Insulation A.
- Page 23 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 4. INSTALLING INDOOR UNIT CAUTION Reset the hex bolts as shown in Fig.14. Install the drain hose at the rear; it should not be installed on the top or right side. After the piping and drainage exit has been selected, Fig.
- Page 24 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Wiring (2) Pull out the electrical component box. ELECTRICAL WIRING Fig. 27 CAUTION (1) Match the terminal block numbers and connection cable colours with those of the outdoor unit. Incorrect wiring may cause damage to the electrical parts.
- Page 25 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5.2.4 AD122ALERA...
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Page 30: Parts And Functions
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 6. Parts and Functions 6.1 AB122ACERA 6.2 AC122ALERA... - Page 31 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 6.3 AD122ALERA 6.4 AU122AEERA Air inlet Air outlet Compressor (Inside of unit)
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Page 32: Controller Functions
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 7. Controller functions Wired controller YR-E12... -
Page 33: Refrigerant Circuit
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 8. Refrigerant circuit... -
Page 34: Electrical Control Functions
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 9. Electrical Control Functions 9.1. Outdoor electric control functions System main functions Definition of sensor sign: Tnh=indoor ambient temp., Twh=outdoor ambient temp., Tpg=indoor coil, Ttc=discharge, Tcs= outdoor coil, Txr=suction. 1.1 Outdoor running frequency and the control procedure 1.1.1 Outdoor running frequency control... - Page 35 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA ambient temperature, and 3 minutes later, the unit will adjust according to the outdoor ambient temperature and compressor running frequency. Fan speed chart in 3 minutes after compressor starts up: Ambient temp.
- Page 36 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Initialize movement: 600 pulse close, then 50 pulse open, that is stop at 50 pulse at last; Full-open: 480 pulse open(E); Upper/lower limitation of open angle: 480---50 pulse; Driving speed: open direction: 30.3 PPS; close direction: 83.3 PPS;...
- Page 37 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.5 Outdoor defrosting control 1.5.1 Enter condition In heating mode, if the compressor has run for 10 minutes continuously and run for 45 minutes in all(clear the compressor accumulative operation time when defrost over or enter cooling mode ), the system will measure the defrosting temp.
- Page 38 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA and LED1 are black out. 1.9 Time shorting function Time shorting function: If the time shorting port is in short circuit after electrifying CJ601, the unit will perform a 1/60 time shorting control.
- Page 39 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA The compressor will stop and alarm if current exceed 11A for 3 seconds contineously during compressor startup, the compressor can re-start up after 3 minutes. but the compressor will stop and alarm and confirm the failure if it stop abnormally 3 times in 60 minutes, the system will work continued after been power-off.
- Page 40 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA normal control 11℃ slow rise FQY 1HZ/10S 9℃ remaining 6℃ slow reduce FQY 1HZ/10S 1.10.8 Rated operation(the value can be setted by EEPROM) Rated cooling: ● When receiving the indoor rated operation command, the unit will enter rated cooling operation.
- Page 41 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Display of Flash times Trouble description LED borad Analyze and diagnose of LED on LED 5-4-3-2-1 mainborad IPM failure 00001 IPM failure Abnormal of DC moter 00010 Jam of DC motor or motor failure...
- Page 42 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA AB122ACERA AC122ACERA AD122ALERA electric control function: 1.General features 1.1 Control mode: remotr or wired control + connecting port of long-distance control + passive port switch control. Temperature control: 16-30℃ 1.3 P recise of temperature control: ±1℃...
- Page 43 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA conditions, then perform the selected mode. Tr≥Ts-3℃ select COOL mode (includes FAN mode) Tr＜Ts-3℃ select HEAT or FAN mode 4.2 After entering the AUTO mode, the mode can change over among COOL, HEAT or FAN...
- Page 44 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA ΔT＞2, the compressor and the outdoor motor will run continuously, indoor motor will run at the set speed, this area is defined as Area A; 0≤ΔT≤2, the compressor and the outdoor motor will always run for 10 minutes and then stop for 6 minutes, indoor motor will be LOW speed, this area is defined as Area B;...
- Page 45 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA alarm. 7.6 Anti-cold air function in heating mode After entering heating mode, or last defrosting is over, the compressor will start up, if Tg＜28℃, indoor motor will stop; if 38℃>Tg≥28℃, indoor motor will run at low speed; if Tg≥38℃ or the compressor has run for over 4 minutes, indoor motor will run at the set speed;...
- Page 46 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA When timer is over, the unit begins to run, and the timer LED is off. The unit operation begins from receiving the timer signal for the last time. The SLEEP function only can be set before the TIMER ON begins.
- Page 47 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA After compressor is running for 3 minutes, the unit will check the pipe pressure, when the pipe pressure is too low and low pressure switch is running for 30 senconds, compressor and outdoor fan motor will stop and will send failure 13.
- Page 48 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA discharge B (oil circuit for more than 2m resumable continuously temp. sensor-multi) 20(32D) Module failure Module overheat, overcurrent, due to the signal, short-circuit resumable 36(54D) Fault in zero-load Current sensor failure or...
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Page 49: Electric Data
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 10. Electric data AB122ACERA CIRCUIT DIAGRAM OF INDOOR UNIT 0010576979 PIPING TEMP. SENSOR TRANSFORMER ROOM WIRED PUMP TEMP. CONTROLLER MOTOR SENSOR STEP MOTOR LED3 CN13 CN12 CN14 1234 1234 1234 CN18 SIGNAL TRANS.-II... - Page 50 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 0010452325E for AB122ACERA CN18 CN15 CN17 CN20 CN21 CN22 CN16 CN19 CN10 CN14 CN11 LED2 CN13 LED1 CN12...
- Page 51 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 0010451690E for AC122ACERA and AD122ALERA CN11 CN21 CN15 CN12 CN16 CN13 LED1 CN14 CN17 CN20 CN19 LED5 LED4...
- Page 52 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA AU122AEERA...
- Page 53 Commercial Air Conditioner Model: AU242AGERA AB242ACERA AC242ACERA AD242ALERA AD242AMERA Ou tdoor PCB 0151800037 CN16 CN13 LED001 CN15 CN24 CN12 CN19 CN20 CN18 CN17 CN10 CN11...
- Page 54 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 10.3 Sensor characteristic Model Name Code Sub-part code characteristic Outdoor R25=10KΩ±2.5% ambient temp. 0010450192 001A3800082 B25/50=4200K±3% sensor Compressor R25=10KΩ±3% 001A3900062 sunction sensor B25/50=3700K±3% Outdoor defrost R25=10KΩ±3% AU122AEERA 0010450194 001A3800093 sensor B25/50=3700K±3% Compressor R80=50KΩ±3%...
- Page 55 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA R25=10KΩ±3% R25=23KΩ±2.5% B25/50=3700K±3% B25/50=4200K±3% Rnom(KΩ) Rnom(KΩ) T(℃) T(℃) 90.79 10.43 2.09 281.34 24.12 -20℃ -20℃ 24℃ 85.72 2.03 -19℃ 263.56 25℃ 80.96 9.59 1.96 247.04 21.94 -18℃ 26℃ 76.51 9.21 -17℃ 231.66 27℃...
- Page 56 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA R80=50KΩ±3% B25/80=4450K±3% T(℃) Rnom(KΩ) 11600 933.4 127.3 10860 886.4 122.1 10170 841.9 117.2 9529 112.5 8932 760.8 8375 722.8 103.8 7856 687.3 99.68 7372 653.8 6920 6498 6104 553.6 5736 536.6 5392 511.1...
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Page 57: Troubleshooting
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 11. Troubleshooting 1) Sensor failure Alarm condition: ambient temperature sensor is in short circuit or open circuit check if the wiring is correct according to reconnect wiring diagram if sensor is fixed... - Page 58 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 3) Outdoor DC motor abnormal Alarm condition: outdoor DC motor is blocked rotor or broken, abnormal. outdoor indicator LED indicate DC motor abnormal Check if the outdoor unit fan adjust fan blade to make it run normally...
- Page 59 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 6) Outdoor high pressure protection Alarm condition: When compressor running, high pressure is over 4.5 MPa for 30 seconds continously outdoor failure indicator indicate high pressure failure check if the refrigerant is too much...
- Page 60 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 10) Communication failure between outdoor PCB and module outdoor indicator flashes 22 times eliminate other failures compressor not start up, outdoor alarms, check if there is other failure adjust wiring check if the wiring between outdoor PCB and module is correct...
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Page 61: Noise Level
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 12. Noise level Sound pressure level DB Sound pressure level DB... - Page 62 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Sound pressure level DB Sound pressure level DB...
- Page 63 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...