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Haier 1U12BS3ERA Service Manual

Haier 1U12BS3ERA Service Manual

Wall mounted type dc inverter super match
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SERVICE MANAUL
Wall Mounted Type
DC Inverter SUPER MATCH
Model No.
1U12BS3ERA
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
Repair the product or products dealt with in this service information by anyone else could result in serious injury or death
2013 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version V1
Date 2013-11-25

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Summary of Contents for Haier 1U12BS3ERA

  • Page 1 Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2013 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law...
  • Page 2: Table Of Contents

    Contents Contents 1. Introduction ....................1 2. Specifications..................7 3. Sensors list ....................8 4. Piping diagrams ..................9 5. Operation range ..................10 6. Printed Circuit Board Connector Wiring Diagram .........11 7. Functions and Control................8. Dimensional drawings................9. Conter of gravity ................... 10. Installations ..................11.
  • Page 3: Introduction

    Introduction 1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50HZ/1ph DC inverter Heat pump & R410A refrigerant Version number Europe Platform of outdoor units: B (B platform) Nominal cooling capacity (12000BTU/h) Type of outdoor unit : U (normal type) The maximum combination number Domestic air conditioner...
  • Page 4 Introduction 1.2 Safety Cautions Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.
  • Page 5 Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
  • Page 6 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 7 Introduction Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire. Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not installed properly, water can enter the room and wet the furniture and floor.
  • Page 8 Introduction Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock. Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M ohm or higher.
  • Page 9: Specifications

    Specification 2 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE Phase Frequency Voltage NOMINAL CAPACITY and NOMINAL INPUT cooling heating Capacity rated Btu/h 12290 12630 Power Consumption(Rated) 1.35 1.40 SEER/SCOP Annual energy consumption 1321 1.6*10 ³ Moisture Removal m³/h TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 780×245×540 Packaged H*W*D...
  • Page 10: Sensors List

    Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type R410a Refrigerant charge Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control Capillary liquid 6.35 Piping connections 9.52 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max.
  • Page 11: Piping Diagrams

    Pinping diagrams 4 Pinping diagrams Domestic air conditioner...
  • Page 12: Operation Range

    Operation range 5 Operation range Domestic air conditioner...
  • Page 13: Printed Circuit Board Connector Wiring Diagram

    Wiring diagrams 6. Printed Circuit Board Connector Wiring Diagram Connectors PCB (1) Control PCB series PCB connector Connect with load Connector for power N and L Connector for ground Connector for communicate between indoor and outdoor unit Connector for CN2,CN1 on the module board CN10 Connector for four way valve coil CN16...
  • Page 14 Wiring diagrams PCB (2) Module PCB series PCB connector Connect with load P (CN1) Connector for capacitance board N (CN5) LO (CN6) Connector for reactor LI (CN7) Connector for the U, V, W wire of the compressor CN10 Connector for the DC power 5V and 15V form the control PCB Connector for communicate between the control board and the module CN11 board...
  • Page 15 Wiring diagrams PCB (1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 Domestic air conditioner...
  • Page 16 Wirin ng diagrams PCB (2) CN6 6 mestic air co onditioner...
  • Page 17 Functions and control Wiring diagrams CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit. Domestic air conditioner...
  • Page 18: Functions And Control

    Functions and control 7. Functions and Control 7.1 Main functions and control specification 7.1.1 The operation frequency of outdoor unit and its control 7.1.1.1 The operation frequency control of compressor The operation frequency scope of compressor Mode Minimun operation frequency Maximun operation frequency Heating 36Hz...
  • Page 19 Functions and control Cooling/dehumidification mode: Serial No. Temperature scope Frequency limitation Wh_c<28 Max_hz1 46HZ Wh_c<32 Max_hz2 72HZ Wh_c<40 Max_hz3 80HZ Wh_c<48 Max_hz4 65HZ Wh_c 48 Max_hz5 46HZ Remarks: the above are not only the maximum frequency limitations of the complete appliance which are affected by the environment, but also the maximum ability limitation of the system.
  • Page 20 Functions and control 7.1.2 The outdoor fan control (Exchange fan) When the fan is changed among every airflow speed (including stop blowing), in order to avoid the airflow speed from skipping frequently, it must be kept under each mode for over 30 seconds, and then it can be changed to another mode (when cooling, the time is changed to 15 seconds).
  • Page 21 Functions and control Abnormal stop Decreasing the frequency rapidly 1HZ/second Decreasing the frequency slowly (1HZ/10seconds) The frequency doesn’t change. Increasing the frequency (1HZ/10second) Increasing the frequency 1HZ/1second TTC>=110 lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor, others don’t last.
  • Page 22 Functions and control During the starting process of the compressor, if the AC current is greater than 7A, the frequency of the compressor increases at the prohibited speed. During the starting process of the compressor, if the AC current is greater than 6.5A, the frequency of the compressor increases at the speed of no faster than 0.1HZ/second.
  • Page 23 Functions and control When ice_temp_3 Tpg_indoor ice_temp_3+3 , the frequency of the compressor increases at the speed of 1HZ/10seconds. For example, Tpg_indoor 0 last for 2 minutes, and then the outdoor unit will stop, and report underload malfunction, but don’t send malfunction report to the indoor. The compressor stops for more than 3 minutes, Tpg_indoor>...
  • Page 24 Functions and control 7.2 Value of Thermistor Ambient Sensor, Defrosting Sensor, Pipe sensor R25 =10K 3% B25 /50 =3700K 3% Temp.( ) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600 125.0806 -1.93 1.74 146.5609 131.7022 118.2434...
  • Page 25 Functions and control 20.0176 19.0621 18.1358 -1.11 1.07 19.1149 18.2270 17.3646 -1.08 1.05 18.2580 17.4331 16.6305 -1.06 1.03 17.4442 16.6782 15.9315 -1.03 1.01 16.6711 15.9601 15.2657 -1.01 0.99 15.9366 15.2770 14.6315 -0.98 0.96 15.2385 14.6268 14.0271 -0.96 0.94 14.5748 14.0079 13.4510 -0.93 0.92...
  • Page 26 Functions and control 3.4195 3.2085 3.0079 -1.91 1.82 3.3060 3.0989 2.9021 -1.95 1.85 3.1969 2.9935 2.8005 -2.00 1.89 3.0919 2.8922 2.7029 -2.04 1.93 2.9909 2.7948 2.6092 -2.08 1.97 2.8936 2.7012 2.5193 -2.13 2.01 2.8000 2.6112 2.4328 -2.17 2.05 2.7099 2.5246 2.3498 -2.22 2.09...
  • Page 27 Functions and control 0.8741 0.7863 0.7067 -4.12 3.74 0.8507 0.7646 0.6867 -4.18 3.78 0.8281 0.7436 0.6672 -4.23 3.83 0.8061 0.7233 0.6484 -4.29 3.88 0.7848 0.7036 0.6303 -4.34 3.92 0.7641 0.6845 0.6127 -4.40 3.97 0.7441 0.6661 0.5957 -4.46 4.02 0.7247 0.6482 0.5792 -4.51 4.07...
  • Page 28 Functions and control Discharging Sensor R80 =50K B25/80 =4450K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43 11096.6531 9212.8101 7641.8972...
  • Page 29 Functions and control 1236.4792 1094.3200 967.6334 -2.36 2.11 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603 680.3265 -2.24 2.02...
  • Page 30 Functions and control 140.7403 132.6980 125.0027 -1.44 1.38 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961 98.5000 -1.30 1.26 104.8443 99.7046 94.7315 -1.28 1.23...
  • Page 31 Functions and control 26.1569 24.8685 23.6222 -1.57 1.52 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025 19.9465 -1.77 1.70 21.6159 20.4303 19.2924 -1.81 1.74 20.9508 19.7825 18.6626 -1.85 1.77...
  • Page 32: Dimensional Drawings

    Dimensinal drawings 8.Dimensional drawings 9.Center of gravity Domestic air conditioner...
  • Page 33: Installations

    Installations 10.Installations Preparation Selection of Installation Place Necessary Tools for Installation Torque wrench Indoor Unit Driver (17mm,22mm,26mm) Nipper Place, robust not causing vibration, where the body can be supported suf ciently. Hacksaw Pipe cutter Place, not affected by heat or steam generated in the vicinity, where inlet and outlet of the Hole core drill Flaring tool unit are not disturbed.
  • Page 34 Installations 1. Insert the drain hose into the dent of heat insulation materials of indoor unit. Accessory parts 2. Insert the indoor/outdoor electric cable from backside of indoor unit, and pull it out on the front side, then connect them. 3.
  • Page 35 The standard pipe length is 5m. If it is over 5m, the function of the unit will be 1U09BS3ERA affected. If the pipe has to be lengthened, the refrigerant should be charged, 1U12BS3ERA according to 20 g/m. But the charge of refrigerant must be conducted by profes- sional air conditioner engineer. Before adding additional refrigerant, perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then charge additional refrigerant.
  • Page 36 Installations No gas leakage? On Drainage In case of gas leakage, tighten parts of pipe connection. If Please install the drain hose so as to be downward slope without fail. leakage stops, then proceed 6. steps Please don’t do the drainage as shown below. If it does not stop gas leakage, discharge whole refrigerants from the service port.
  • Page 37: Service Diagnosis

    Installations 11 Service Diagnosis 11.1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
  • Page 38 Installations 11.3 Problem Symptoms and Measures Symptom Check Item Details of Measure Check the power supply. Check to make sure that the rated voltage is supplied. None of the units operates Check the indoor PCB Check to make sure that the indoor PCB is broken Operation A power failure of 2 to 10 cycles can stop air conditioner Check the power supply.
  • Page 39 Service diagnosis Code indication Indoor Reference Outdoor fault description displaying Page (LED1 flash panel code times) indication Indoor and Communication fault between indoor and Page48 . Outdoor outdoor units Room temperature sensor failure Page38 . Heat-exchange sensor failure Page38 . Indoor Malfunction Indoor fan motor malfunction Page39 .
  • Page 40 Installations 11.4.1 Thermistor or Related Abnormality E1: Room temperature sensor failure Indoor display E2: Heat-exchange sensor failure LED1 flash 10 times Defrost temperature sensor failure LED1 flash 11 times Suction temperature sensor failure Outdoor display LED1 flash 12 times Ambient temperature sensor failure LED1 flash 13 times Discharge temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 41 Installations 11.4.2 EEPROM abnormal Indoor Display E4: indoor EEPROM error outdoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of The Data detected by the EEPROM are used to determine MCU malfunction detection Malfunction detection when the data of EEPROM is error or the EEPROM is damaged conditions Faulty EEPROM data Supposed causes...
  • Page 42 Installations 11.4.3 Indoor AC fan motor malfunction Indoor Display The fan speed detected by the Hall IC during fan motor running which is used to Method of determine the fan motor operating malfunction detection Malfunction detection When there is no fan speed feedback signal within 2 minutes conditions Operation halt due to breaking of wire inside the fan motor.
  • Page 43 Installations 11.4.4 Outdoor DC fan motor fault Outdoor diplay LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on malfunction detection Malfunction detection when the data of EEPROM is error or the EEPROM is damaged conditions DC fan motor protection dues to the DC fan motor faulty Supposed causes...
  • Page 44 Installations Check whether Terminal on the outdoor mainboard is well inserted. Reinsert the terminals Is it normal? Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can Measure the voltage between 1 and 3 of the terminal of fan motor on the mainboard about DC310V, Measure the voltage between 3 and 4 of the terminal about DC15V.
  • Page 45 Installations 11.4.5 IPM protection Outdoor diplay LED1 flash 2 times Method of IPM protection is detected by checking the compressor running condition and so on malfunction detection Malfunction detection The system leads to IPM protection due to over current conditions The compressor faulty leads to IPM protection circuit component of IPM is broken and led to IPM protection Supposed causes...
  • Page 46 Installations 11.4.6 Over-current of the compressor LED1 flash 3 or 24 or 25 times Outdoor diplay Method of he current of the compressor is too high malfunction detection Malfunction detection when the IPM Module is damaged or the compressor is damaged. power supply conditions voltage is too low or too high...
  • Page 47 Installations 11.4.7 The communication fault between IPM and outdoor PCB Outdoor diplay LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB malfunction detection The outdoor PCB broken leads to communication fault Malfunction detection conditions The IPM module broken leads to communication fault...
  • Page 48 Installations 11.4.8 Power Supply Over or under voltage fault Outdoor diplay LED1 flash 21 times The power supply is over voltage Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection malfunction detection An voltage signal is fed from the voltage detection circuit to the microcomputer Malfunction detection conditions Supply voltage not as specified.
  • Page 49 Installations 11.4.9 Overheat Protection For Discharge Temperature LED1 flash 8 times Outdoor diplay Method of The Discharge temperature control is checked with the temperature being detected by malfunction detection the Discharge pipe thermistor Malfunction detection when the compressor discharge temperature is above 110 conditions Electronic expansion valve defective Supposed causes...
  • Page 50 Installations 11.4.10 The communication fault between indoor and outdoor indoor diplay Outdoor diplay LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB malfunction detection The outdoor PCB broken leads to communication fault Malfunction detection The indoor PCB broken leads to communication fault conditions...
  • Page 51 Installations Check the indoor mainboard. Measure the voltage between Jumpers 3 and 4 of IC1 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter. If the voltage is of a constant value of 0V DCto5V DC If 230VAC is available but 310DC not, the power module is damaged, replace it...
  • Page 52 Table of Contents 11.4.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor diplay LED1 flash 18 times LED1 flash 19 times The position of the compressor rotor can not detected normally Method of malfunction detection when the wiring of compressor is wrong or the connection is poor; or the compressor Malfunction detection is damaged conditions...
  • Page 53 Table of Contents 11.4.12 High work-intense protection LED1 flash 21 times Outdoor diplay Method of High work-intense control is activated in the heating mode if the temperature being malfunction detection sensed by the heat exchanger thermistor exceeds the limit. Activated when the temperature being sensed by the heat exchanger rises above Malfunction detection conditions twice in 30 minutes.
  • Page 54: Performance And Cerves Diagrams

    Sound level 12.Performence and cerves diagrams 12.1 Cooling capacity-temperature curves Cooling value-temerature table indoor temp. outdoor temp.(humidity 46%) DB/WB 18/12 2443 2417 4048 3627 3228 3149 2910 2160 18/14 2494 2469 4133 3711 3428 3228 2989 2222 20/15 2546 2520 4217 3795 3507...
  • Page 55 Sound level 12.2 Cooling power consumption value- temperature curves Power consumption value-temp.table indoor temp. outdoor temp.(humidity 46%) DB/WB 18/12 1138 1186 1220 1301 1227 18/14 1159 1206 1240 1328 1362 20/15 1179 1227 1260 1349 1396 1206 1247 1281 1362 1423 22/16 25/18...
  • Page 56 Sound level 12.3 Cooling discharge pressure curves Cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 2421 2504 2588 3239 3273 3339 3239 3306 3339 3273 3339 3439 3306 3473 3473 2554 2554 2652 cooling discharge pressure 4000 3500 3000 2500 2000...
  • Page 57 Sound level 12.4 Cooling suction pressure curves Cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB cooling suction pressure 1050 Outdoor Temp. Domestic air conditioner...
  • Page 58 Sound level 12.5 Heating capacity-temperature curves Heating capacity and indoor/outdoor temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 2338 1776 1905 3594 3286 3031 4676 4240 3940 4473 4167 3779 3660 3472 2955 3366 3248 2703 3472 3360 2783 heating capacity and indoor/outdoor temp.curves 5000 4500 4000...
  • Page 59 Sound level 12.6 Heating power consumption value- temperature curves Power consumption value-temp.table outdoor temp. indoor temp.(humidity 46%) DB/WB 1037 1057 1044 1261 1193 1356 1437 1094 1204 1315 heating capacity and indoor/outdoor temp.curves 1600 1400 1200 1000 outdoor tempe.(DB/WB) Domestic air conditioner...
  • Page 60 Sound level 12.7 Heating discharge pressure curves Heating discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 2941 3069 3165 3005 3101 3197 3053 3133 3229 3101 3165 3261 3165 3197 3293 3062 3154 3200 2567 2644 2669 2459 2507 2531 heating discharge pressure 4000...
  • Page 61 Sound level 12.8 Heating suction pressure curves Heating suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB heating suction pressure Outdoor Temp. Domestic air conditioner...
  • Page 62: Sound Level

    Sound level 13.Sound level Sound power level(Indoor unit) Sound power level 230V,50HZ Model (Outdoor unit) Measuring location of Cooling/heating (cooling/heating) microphone 1U12BS3ERA Domestic air conditioner...
  • Page 63: Circuit Diagrams

    Circuit diagrams 14 Circuit diagrams 14.1 Outdoor unit control board Circuit Diagrams 222/250VAC CY10 222/250VAC 472/250V/275V 472/250V/275V 103/250V/275V 103/250V/275V 472/250V/275V 104/50V 472/250V/275V CN10 CN12 ERROR CN13 LED1 R73 10K/1% 102/50V 20K/1% 20K/1% 20K/1% 47K/1% R74 10K/1% 102/50V E-valve(White) SW TEST(BLUE) HW(Yellow) CS(White) XQ(Red)
  • Page 64 Circuit diagrams 100K/2W 104/50V R28 5.1K/1% Domestic air conditioner...
  • Page 65 Circuit diagrams 14.2 Module board Circuit Diagram R219 1K R217 1K R229 4.22K R228130K R227130K R226130K D205 LL4148 VUF B VVF B VWFB C030 C029 R003 4.7K C007 R001 4.7K C205 R002 4.7K R004 4.7K R231 4.7K C008 C009 Domestic air conditioner...
  • Page 66 Circuit diagrams Sincere Forever Haier Group Edited by : Li Xiaoping Haier Industrial Park, No.1, Haier Road Liu xiang 266101, Qingdao, China_ Signed by : He shiquan Http //www.haier.com Approved by: Wu Hongjin Domestic air conditioner...

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