Haier HSU-18HEA03/R2(DB)-I Service Manual
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Haier HSU-18HEA03/R2(DB)-I Service Manual

Wall mounted type dc inverter e-series
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SERVICE MANUAL

Order No.AC0902S004V0

Wall mounted Type

DC Inverter E-Series
Model No. HSU-18HEA03/R2(DB)-I
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
©2008 (Qingdao Haier Air Conditioner General corp.,Ltd)
All right reserved .Unauthorized copying and distribution is a violation of law
Haier Group

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Summary of Contents for Haier HSU-18HEA03/R2(DB)-I

  • Page 1: Service Manual

    ©2008 (Qingdao Haier Air Conditioner General corp.,Ltd) All right reserved .Unauthorized copying and distribution is a violation of law...

  • Page 2: Table Of Contents

    Table of Contents HSU-18HEA03/R2(DB)-I Table of Contents 1. Introduction 1.1 Safety Cautions 2. List of Functions 4. Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors 4.2 Outdoor unit 5. Funcitions and Control 5.2 The control system of outdoor unit 5.3 Value of Thermistor...

  • Page 3: Safety Cautions

    Introduction HSU-18HEA03/R2(DB)-I 1. Introduction 1.1 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”...

  • Page 4: Introduction

    Introduction HSU-18HEA03/R2(DB)-I 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 5 Introduction HSU-18HEA03/R2(DB)-I 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 the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals.

  • Page 6: Inspection After Repair

    Introduction HSU-18HEA03/R2(DB)-I 1.1.3 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.

  • Page 7: List Of Functions

    List of Functions HSU-18HEA03/R2(DB)-I 2. List of Functions Category Functions HSU-18HEA03/R2(DB)-I Healthy negative ion make your room full of an abundance natural negative ions. Child lock Avoid the child's wrong operation on the remote controller Use the timer function to set on,or off,or from on to off,or from off to...
  • Page 8 HSU-18HEA03/R2(DB)-I HSU-18HEA03/R2(DB)-I Model Cooling Heating 5.00(0.95~5.5) 5.22 Capacity Btu/h 18750 17070(3240~1870) Rated(Min.~Max.) kcal/h 4300 4489 Mositure Removal — Running Current(Read) 7.13 6.88 Power Consumption 1580(270-1950) 1600(350~2200) Read(Min.~Max.) Power Factor COP Rated (Min.~Max.) 3.16 3.26 Liquid Piping Connctions Drain Heat Insulation Both Liquid and Gas Pipes Max.
  • Page 9 HSU-18HEA03/R2(DB)-I Outdoor Unit HSU-18HEA03/R2(DB)-I Casing Color Ivory White Type Sroll Compressor Compressor Model 5CS130×CC03 Motor Output 1650 Model SRB68A Refrigerant Oil Charge 0.48 Model R410A Refrigerant Charge 1.00 /min 36.6 Air Flow Rate 1294 Type Propeller Motor Output Running Current (Rated) 6.88...

  • Page 10: Printed Circuit Board Connector Wiring Diagram

    Connector Wring Diagram HSU-18HEA03/R2(DB)-I 4. Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors Connectors PCB(1) (Control PCB) 1) CN601 Connector for fan motor 2) CN9 Connector for STEP motor 3) CN8 Connector for heat exchanger thermistor and Room temperature thermistor...

  • Page 11: Outdoor Unit

    Connector Wring Diagram HSU-18HEA03/R2(DB)-I Outdoor Unit Connectors PCB(1) (Control PCB) 1) CN1,CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN6,CN7 Connector for terminal block 4) CN9,CN10 Connector for CN2,CN1 on the module board 5) CN11 Connector for four way valve coil...
  • Page 12 Connector Wring Diagram HSU-18HEA03/R2(DB)-I CN36 CN10 CN11 CN12 CN15 CN17 CN18 CN19 CN21 CN25 CN28 CN23 CN24 Domestic Air Conditioner...
  • Page 13 Connector Wring Diagram HSU-18HEA03/R2(DB)-I CN11 CN10 Domestic Air Conditioner...

  • Page 14: Funcitions And Control

    Funcitions and Control HSU-18HEA03/R2(DB)-I 5. Funcitions and Control 5.1.1 automatic run mode When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode.

  • Page 15: Funcitions And Control

    Funcitions and Control HSU-18HEA03/R2(DB)-I for 10 minutes and then at the low dehumidify mode for six minutes. The indoor fan will operate at low speed. When Tr< Ts, the outsystem will be stopped, the indoor fan will be stopped for 3 minutes and then turned to the low speed option.
  • Page 16 Funcitions and Control HSU-18HEA03/R2(DB)-I Strength operation for 15 minutes. operation. When the system is at the automatic option with the strength/ mute function, if the system enters the cooling mode, the cooling strength/ mute function will be offered; if the system enters the heating mode, be no strength/ mute function.
  • Page 17 Funcitions and Control HSU-18HEA03/R2(DB)-I 5.1.9.2 Under the heating mode, after the setting of the dormant operation, the et temperature will fall 2 centigrades after 1 hour’s operation and will fall 2 centigrades 1 hours later. 3 hours after the preceding operations, the set temperature will be raised for 1 centigrade and the system will keep this status for 3 hours and then close down.
  • Page 18 Funcitions and Control HSU-18HEA03/R2(DB)-I be controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below 42 and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction 5.1.13 Malfunction list resume Nothing is presented if there is no code list.

  • Page 19: The Control System Of Outdoor Unit

    Funcitions and Control HSU-18HEA03/R2(DB)-I 5.2 The control system of outdoor unit 5.2.1.1 The operation frequency control of compressor Mode Heating 20Hz 100Hz Refrigeration 20Hz 90Hz 5.2.1.2 The starting of compressor 5.2.1.3 The speeds of increasing or decreasing the frequency of the compressor 5.2.1.4 The calculation of the compressor’s frequency...
  • Page 20 Funcitions and Control HSU-18HEA03/R2(DB)-I after 30 seconds,it begins to control the airflow speed according to the temperature conditions of the The temperature of the outdoor air (Ta) The temperature of the outdoor coil (Te) High Keeping the speed Medium Keeping the speed Stop 5.2.2.2 The outdoor fan control when heating...

  • Page 21: Protection Function

    Funcitions and Control HSU-18HEA03/R2(DB)-I If a single machine causes defrosting, the other machines all involve in defrosting. D. The conditions of withdrawing from defrosting The defrosting operation will change to heating operation, if any of the following conditions is (1) The temperature of the outdoor heat exchanger is continuously over 7°C for 80 seconds.
  • Page 22 Funcitions and Control HSU-18HEA03/R2(DB)-I he compressor stops Fgh_t1 2 gh_t1 6 5 Fgh_t2 59 Fgh_t 2 2 gh_t3 Fgh_t 3 2 gh_t4 Fgh_t4—2 I ncreasing slowly Fgh_t5 Fgh_t5—2 Normal Q:Continue to keep the last-time instruction cycle R:Increasing at the speed of 1Hz/10seconds Remarks: the outdoor unit 5.2.5.3 The control of preventing the overcurrent of the compressor...
  • Page 23 Funcitions and Control HSU-18HEA03/R2(DB)-I 5.2.5.5 Antifreezing protection of the indoor heat exchanger state). 11 //ice_temp_3+5 ce_temp_3+3 ncreasing slowly 8 //ice_temp_3+2 ice_temp_3 ice_temp_2 5 ecreasing slowly ice_temp_1 ecreasing rapidly i ce_temp_1 Stop thecompressor doesn’t change. underload malfunction, but don’t send malfunction report to the indoor.
  • Page 24 Funcitions and Control HSU-18HEA03/R2(DB)-I b) For the units’ malfunctins Annex 1 If there’s malfunction with the units, this will not affect the run of Remarks: in 3 minutes when the compressor stops, the units’ malfunctions are not displayed; the complete appliance’s malfunctions are prior to the units’ malfunctions.
  • Page 25 Funcitions and Control HSU-18HEA03/R2(DB)-I 73.9543 67.7939 62.0907 -1.68 1.55 70.0342 64.3023 58.9863 -1.66 1.54 66.3463 61.0123 56.0565 -1.64 1.52 62.8755 57.9110 53.2905 -1.62 1.51 59.6076 54.9866 50.6781 -1.60 1.49 56.5296 52.2278 48.2099 -1.58 1.47 53.6294 49.6244 45.8771 -1.56 1.46 50.8956 47.1666...
  • Page 26 Funcitions and Control HSU-18HEA03/R2(DB)-I 6.7273 6.4459 6.1707 -1.13 1.11 6.4803 6.2021 5.9304 -1.17 1.14 6.2437 5.9687 5.7007 -1.21 1.18 6.0170 5.7454 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430...
  • Page 27 Funcitions and Control HSU-18HEA03/R2(DB)-I 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326 0.8424 -3.80 3.46 1.0030 0.9061 0.8179 -3.85 3.51 0.9756 0.8806...
  • Page 28 Funcitions and Control HSU-18HEA03/R2(DB)-I 78.1230 71.5010 65.3815 -1.70 1.57 73.9543 67.7939 62.0907 -1.68 1.55 70.0342 64.3023 58.9863 -1.66 1.54 66.3463 61.0123 56.0565 -1.64 1.52 62.8755 57.9110 53.2905 -1.62 1.51 59.6076 54.9866 50.6781 -1.60 1.49 56.5296 52.2278 48.2099 -1.58 1.47 53.6294 49.6244...
  • Page 29 Funcitions and Control HSU-18HEA03/R2(DB)-I 6.9852 6.7008 6.4222 -1.10 1.07 6.7273 6.4459 6.1707 -1.13 1.11 6.4803 6.2021 5.9304 -1.17 1.14 6.2437 5.9687 5.7007 -1.21 1.18 6.0170 5.7454 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308...
  • Page 30 Funcitions and Control HSU-18HEA03/R2(DB)-I 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326...
  • Page 31 Funcitions and Control HSU-18HEA03/R2(DB)-I 5729.1413 4848.9963 4100.3708 -2.77 2.36 5375.5683 4558.1906 3861.6201 -2.76 2.35 5045.9114 4286.5535 3638.1938 -2.75 2.34 4738.4141 4032.7098 3429.0191 -2.73 2.34 4451.4586 3795.3910 3233.1039 -2.72 2.33 4183.5548 3573.4260 3049.5312 -2.70 2.32 3933.3289 3365.7336 2877.4527 -2.69 2.31 3699.5139 3171.3148...
  • Page 32 Funcitions and Control HSU-18HEA03/R2(DB)-I 315.5682 290.6199 267.4031 -1.84 1.71 301.1254 277.6976 255.8620 -1.82 1.70 287.4128 265.4119 244.8745 -1.80 1.68 274.3905 253.7288 234.4118 -1.78 1.66 262.0206 242.6161 224.4465 -1.76 1.64 250.2676 232.0436 214.9529 -1.74 1.63 239.0983 221.9825 205.9065 -1.71 1.61 228.4809 212.4060...
  • Page 33 Funcitions and Control HSU-18HEA03/R2(DB)-I 36.3996 34.9622 33.5513 -1.18 1.16 35.1903 33.7653 32.3689 -1.22 1.19 34.0269 32.6151 31.2338 -1.26 1.23 32.9075 31.5096 30.1438 -1.30 1.27 31.8302 30.4467 29.0970 -1.33 1.30 30.7933 29.4246 28.0915 -1.37 1.34 29.7950 28.4417 27.1254 -1.41 1.37 28.8337 27.4961...
  • Page 34 HSU-18HEA03/R2(DB)-I the nst ll on n test ope on of the on t n been mplet , t sho l be below. of the , to well, of s t.In to meet t s expe of the s s, s ff...

  • Page 35: Instruction

    HSU-18HEA03/R2(DB)-I Introduction Cautions Safety Instructions and Warnings Disposal of the old air conditioner Before disposing an old air conditioner that Before starting the air conditioner, read the goes out of use, please make sure it's inop- information given in the User's Guide caref- erative and safe.
  • Page 36 HSU-18HEA03/R2(DB)-I Introduction Cautions 7. The appliance is not intended for use Do not obstruct or cover the ventilation by young children or infirm persons grille of the air conditoner.Do not put fingers without supervision. or any other things into the inlet/outlet and swing louver.

  • Page 37: Safety Instruction

    HSU-18HEA03/R2(DB) Introduction Cautions Safety Instruction Please read the following Safety Instructions carefully prior to use. The instructions are classified into two levels, WARNING and CAUTION according to the seriousness of possible risks and damages as follows. Compliance to the instructions are strictly required for safety use. Installation WARNING Please call Sales/Service Shop for the Installation.
  • Page 38 HSU-18HEA03/R2(DB) Introduction Cautions WARNING When abnormality such as burnt-small found, Use an exclusive power source with a immediately stop the operation button and circuit breaker contact sales shop. STRICT ENFORCEMENT Connect power supply cord Use the proper voltage Do not use power supply cord to the outlet completely extended or connected in halfway STRICT...

  • Page 39: Parts And Functions

    HSU-18HEA03/R2(DB) Introduction Parts and Functions Indoor unit Outlet Display board Inlet Air filter(inside) Air Purifying Filter (inside) Inlet grille Horizontal flap (adjust up and down air flow. Don't adjust it manually) Vertical blade Anion generator (adjust left and right air flow) (inside) Actual inlet grille may vary from the one shown in the manual according to the product purchased...
  • Page 40 HSU-18HEA03/R2(DB) Introduction Parts and Functions 10. TIMER ON display 11. FAN SPEED display AUTO 12. LOCK display 13. SWING UP/DOWN display 14. SLEEP display 15. HEALTH display 16. Operation mode display Operation mode AUTO COOL HEAT Remote controller Display board 17.Singal sending display 18.

  • Page 41: Clock Set

    HSU-18HEA03/R2(DB) Introduction Parts and Functions Clock Set When unit is started for the first time and after replacing batteries in remote controller, clock should be adjusted as follows: 1. Press CLOCK button,"AM" or "PM" flashes. POWER/SOFT 2. Press to set correct time. Each press will increase or decrease 1 min.
  • Page 42 HSU-18HEA03/R2(DB) Introduction Operation HEALTH operation Remote controller 1.Unit start Press ON/OFF on the remote controller, unit starts. 2.Health anion function Press HEALTH button. For each press, is displayed. Air conditioner starts health anion function operation. For twice press, disappears,the operation stops. When indoor fan motor is running, it has healthy process function.
  • Page 43 HSU-18HEA03/R2(DB)-I Introduction Operation uto Operation 1. Unit start Press ON/OFF on the remote controller, unit starts. Remote controller 2.Select operation mode Press MODE button. For each press, operation mode changes as follows: Remote controller: AUTO COOL HEAT Then Select Auto operation 3.Fan speed selection...

  • Page 44: Cool Operation

    HSU-18HEA03/R2(DB)-I Introduction Operation Cool Operation 1. Unit start Press ON/OFF on the remote controller, unit sta rts. Remote controller 2.Select operation mode Press MODE button. For each press, operation mode changes as follows: Remote controller: AUTO COOL HEAT Then Select COOL operation 3.Select temp.setting...

  • Page 45: Dry Operation

    HSU-18HEA03/R2(DB)-I Introduction Operation Dry Operation 1. Unit start Press ON/OFF on the remote controller, unit starts. Remote controller 2.Select operation mode Press MODE button. For each press, operation mode changes as follows: Remote controller: AUTO COOL HEAT Then Select DRY operation 3.Select temp.setting...

  • Page 46: Fan Operation

    HSU-18HEA03/R2(DB)-I Introduction Operation Fan Operation 1. Unit start Remote controller Press ON/OFF on the remote controller, unit starts. 2.Select operation mode Press MODE button. For each press, operation mode changes as follows: Remote controller: AUTO COOL HEAT Then Select FAN operation 3.

  • Page 47: Heat Operation

    HSU-18HEA03/R2(DB)-I Introduction Operation Heat Operation 1. Unit start Press ON/OFF on the remote controller, unit starts. Remote controller 2.Select operation mode Press MODE button. For each press, operation mode changes as follows: Remote controller: AUTO COOL HEAT Then Select HEAT operation 3.Select temp.setting...
  • Page 48 HSU-18HEA03/R2(DB)-I Introduction Operation Air Flow Direction Adjustment 1.Status display of air sending Horizontal louvers Pos.1 Pos.2 Pos.3 Pos.4 POWER/SOFT Pos.5 Pos.6 (Auto swing) 2.Up and down air flow direction For each press of button, air flow direction on remote controller displays...

  • Page 49: Sleep Operation

    HSU-18HEA03/R2(DB)-I Introduction Operation SLEEP operation starts SLEEP operation stops Sleep Operation Approx.6hrs Rises 1 1 hr Before going to bed, you can simply press the SLEEP button and unit will operate in SLEEP Rises 1 1 hr mode and bring you a sound sleep.
  • Page 50 HSU-18HEA03/R2(DB)-I Introduction Operation Timer On/Off Operation Set clock correctly before starting TIMER operation. 1. After unit starts, select your desired operation mode Remote Controller Operation mode will be displayed on LED. 2. Timer mode selection Press TIMER button to change TIMER mode. Every...
  • Page 51 HSU-18HEA03/R2(DB)-I Introduction Operation Timer On-Off Operation Set clock correctly before starting TIMER operation. 1. After unit starts, select your desired operation mode Operation mode will be displayed on LED. Remote Controller 2. Timer mode selection Press TIMER button to change TIMER mode. Every time...
  • Page 52 HSU-18HEA03/R2(DB)-I Introduction Operation POWER/SOFT Operation POWER Operation When you need rapid heating or cooling, you can use this funciton. Selecting of POWER operation Press POWER/SOFT button. Every time the button is pressed,display changes as follows: BLANK POWER SOFT Stop the display at...
  • Page 53 HSU-18HEA03/R2(DB)-I Introduction Operation Health airflow Operation 1.Press ON/OFF to starting The liquid crystal will display the working state of last time Remote controller (Except timer, sleeping, power/soft and health airflow). Setting the comfort work conditions. 2.The setting of health airflow function 1).Press the button of health airflow,...

  • Page 54: Emergency And Test Operation

    HSU-18HEA03/R2(DB)-I Introduction Operation Emergency and Test Operation Emergency operation: Use this operation only when the remote controller is defective or lost. When the emergency operation switch is pressed,the" Pi "sound is heard once, which means the start of this operation.
  • Page 55 HSU-18HEA03/R2(DB)-I Introduction Maintenance For Smart Use of The Air Conditioner Setting of proper room Do not block the air inlet temperature or outlet Proper temperature Close doors and windows Use the timer effectively during operation During cooling operation, prevent the penetration of direct sunlight with curtain or blind.
  • Page 56 HSU-18HEA03/R2(DB)-I Introduction Maintenance Replacement of Air Purifying Filter 1.Open the lnlet Grille Prop up the inlet grille by using a small device named grille-support which located in the right side of the ind- oor unit. 2.Detach the standard air filter Slide the knob slightly upward to release the filter, then withdraw it.

  • Page 57: Wireless Remote Controller

    HSU-18HEA03/R2(DB)-I Introduction Maintenance To Keep Your Air conditioner in Good Condition after Season. Operate in cooling mode for 2-3 hours. To prevent breeding mold or bad smell, be sure to operate at the designated temperature or 30 C,cooling mode and High speed fan mode for 2-3 hours.

  • Page 58: Cleaning The Standard Air Filter

    HSU-18HEA03/R2(DB)-I Introduction Maintenance Before Setting in High season Cleaning the standard air filter. Operation without filter may cause troubles.Be sure to attach both right and left filters prior to the operation. Each of them are of different shapes. Connecting the earthing cable.

  • Page 59: Trouble Shooting

    HSU-18HEA03/R2(DB)-I Introduction Trouble shooting Before asking for service, check the following first. Phenomenon Cause or check points The system does not restart When unit is stopped, it won't restart immediately. immediately until 3 minutes have elapsed to protect the system.

  • Page 60: Service Diagnosis

    Service Diagnosis HSU-18HEA03/R2(DB)-I 7 Service Diagnosis 7.1 Caution for Diagnosis disabling equipment operation. 2.When a signal transmission error occurs the indoor and outdoor units. In either conduct Check Item None of the units Check to make sure that the rated voltage is supplied...

  • Page 61: Service Diagnosis

    Service Diagnosis HSU-18HEA03/R2(DB)-I E1: Room temperature sensor failure E2: Heat-exchange sensor failure Detection Conditions Supposed Causes Correct the connection Is it normal? Thermistor resistance check Is it normal? Replace the thermistor Replace the indoor unit PCB Thermistor resistance check method: thermistor.
  • Page 62 Service Diagnosis HSU-18HEA03/R2(DB)-I Detection operation is used to determine abnormal fan motor operation Conditions Supposed Causes 1. Check connector connection. 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5. Check rotation pulse input (pins 4-1).
  • Page 63 Service Diagnosis HSU-18HEA03/R2(DB)-I Turn o ff Does fan rotate Replace fan motor Turn o ff and d isconnect Does it rotate? fan motor connector turn Check outpue of fan motor connector Is motor v oltage DC310 gengerated ? Replace indoor unit PCB...
  • Page 64 Service Diagnosis HSU-18HEA03/R2(DB)-I Detection Conditions Supposed Causes Troubleshooting be occurred. If there is no response after might be broken FUSE of the indoor Replace the FUSE mainboard is broken The indoor PCB might be Domestic Air Conditioner...

  • Page 65: Ipm Protection

    HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.4 IPM protection outdoor display LED1 flash 2 times: Method of IPM protection is detected by checking the compressor running condition and so on. Malfunction Detection Malfunction The system leads to IPM protection due to over current...

  • Page 66: The Communication Fault Between Ipm And Outdoor Pcb

    HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.5 The communication fault between IPM and outdoor PCB outdoor display LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault...
  • Page 67 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.6 Thermistor or Related Abnormality(outdoor unit) Frost-removing temperature sensor failure outdoor display: LED1 flash 10 times: Exhaust temperature sensor failure outdoor display: LED1 flash 13 times: Ambient temperature sensor failure outdoor display: LED1 flash 12 times: Method of This type of error is detected by checking the thermistor input voltage to the microcomputer.
  • Page 68 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.7 Overheat Protection For Exhaust Temperature outdoor display LED1 flash 8 times Method of the exhaust temperature control is checked with the temperature being detected Malfunction by the exhaust pipe thermistor Detection Malfunction when the compressor discharge temperature is above 117...
  • Page 69 HSU-18HEA03/R2(DB)-I Service Diagnosis The sensor is damaged. Replace the sensor Pull out the exhaust sensor and measure its with a new one. resistance standard temperatures according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.
  • Page 70 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.9 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature being sensed Malfunction by the heat exchanger thermistor exceeds the limit. Detection Malfunction...
  • Page 71 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.10 Power Supply Over or under voltagve fault outdoor display: LED1 flash 6 times The power supply is over voltage. Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit.
  • Page 72 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.11 Loop of the station detect error Outdoor Display LED1 flash 5 or 18 or 19 times Method of Malfunction the position of the compressor rotor can not detected normally Detection Malfunction when the The wiring of compressor is wrong or the connection is poor;...
  • Page 73 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.12 Over-current of the compressor Outdoor Display LED1 flash 3 or 24 or 25 times Method of Malfunction The current of the compressor is too high Detection Malfunction when the IPM Module is damaged Decision or the compressor is damaged Conditions power supply.
  • Page 74 HSU-18HEA03/R2(DB)-I Service Diagnosis 7.3.13 Communication error between the indoor and outdoor units Indoor Display Method of The date received from the another unit in indoor unit-outdoor unit signal transmission is Checked whether is normal Malfunction abnormal fan motor operation Detection...
  • Page 75 HSU-18HEA03/R2(DB)-I Service Diagnosis Check the status of LED1 on the indoor mainboard. If the LED1 blinks interruptedly measure voltage between Jumpers 3 and 4 of IC102 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.

  • Page 76: Installation

    HSU-18HEA03/R2(DB)-I Installation 8 Installation Necessary Tools for Installation 1.Driver 5.Torque wrench(17mm,22mm,26mm) 9.Nipper 12.Reamer 2.Hacksaw 6.Pipe cutter 10.Gas leakage detector or 3.Hole core drill 7.Flaring tool soap-and-water solution 4.Spanner(17,19 and 26mm) 8.Knife 11.Measuring tape Drawing for the installation of indoor and outdoor units...
  • Page 77 HSU-18HEA03/R2(DB)-I Installation Floor fixing dimensions Floor fixing dimensions of the outdoor unit of the outdoor unit (Unit:mm) (Unit:mm) HSU-09HEA03/R2(DB)-I HSU-12HEA03/R2(DB)-I HSU-18 HEA03/R2(DB)-I Fix the unit to concrete or block with bolts( 10mm) and nuts firmly and horizontally. Fixing of outdoor unit When fitting the unit to wall surface, roof or rooftop, fix a supporter surely with nails or wires in consideration of earthquake and strong wind.
  • Page 78 HSU-18HEA03/R2(DB)-I Installation Indoor unit 1.Fitting of the Mounting Plate and Positioning of the wall Hole When the mounting plate is first 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.

  • Page 79: Installation Of The Indoor Unit

    HSU-18HEA03/R2(DB)-I Installation Indoor unit 3.Installation of the Indoor Unit Drawing of pipe Rear piping Draw pipes and the drain hose, then fasten them with the adhesive tape Left Left-rear piping In case of left side piping, cut away, with a nipper, the lid for left piping.
  • Page 80 HSU-18HEA03/R2(DB)-I Installation Indoor unit 4.Connecting the indoor/outdoor Electric Cable Removing the wiring cover Remove terminal cover at right bottom corner of indoor unit, then take off wiring cover by removing its screws. When connecting the cable after installing the indoor unit 1.

  • Page 81: Installation Of Outdoor Unit

    HSU-18HEA03/R2(DB)-I Installation Outdoor unit 1.Installation of Outdoor Unit Drawing for the installation of indoor and outdoor units Install according to 2.Connection of pipes To bend a pipe, give the roundness as large as possible not to crush the pipe ,and the bending radius should be 30 to 40 mm or longer.
  • Page 82 HSU-18HEA03/R2(DB)-I Installation Outdoor unit 5.Purging Method:To use vacuum pump Liquid Side Gas Side 6.35mm(1/4") 9.52mm(3/8") 12.7mm(1/2") 3-way valve 2-way valve Detach the service port's cap of 3-way valve, the valve rod's cap for 2-way valve and 3-way's, connect Gaugemanifold(for R410A)
  • Page 83 HSU-18HEA03/R2(DB)-I Installation 1.Power Source Installation The power source must be exclusively used for air conditioner. (Over I0A) In the case of installing an air conditioner in a moist place, please install an earth leakage breaker. For installation in other places, use a circuit breaker as far as possible.

  • Page 84: Removal Procedure

    HSU-18HEA03/R2(DB)-I Removal Procedure 9. Removal Procedure 9.1 The removal procedure of Indoor Unit HSU18HEA03/R2(DB)-I 9.1.1 Removal of Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1.
  • Page 85 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Pull the front panel out horizontally and remove it. Domestic Air Conditioner...

  • Page 86: Removal Of Air Filter

    HSU-18HEA03/R2(DB)-I Removal Procedure 9.1.2 Removal of Air Filter Step Procedure Points Insert the air upwards slightly and then pull it when installing. out downwards. When installing, insert 2 hooks of the Domestic Air Conditioner...
  • Page 87 HSU-18HEA03/R2(DB)-I Removal Procedure 9.1.3 Removal of the blade Step Procedure Points Release the Insert the air marked hooks. Pull out and when installing. remove the blade. When installing, insert 2 hooks of the Domestic Air Conditioner...
  • Page 88 HSU-18HEA03/R2(DB)-I Removal Procedure 9.1.4 Removal of Front Case Step Procedure Points Release the screw covers Loosen the 2 Domestic Air Conditioner...
  • Page 89 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Loosen the marked hooks. Pull out the front case. Domestic Air Conditioner...
  • Page 90 HSU-18HEA03/R2(DB)-I Removal Procedure 9.1.5 Removal of Vertical Blades and Display Board Step Procedure Points Pull out the Vertical Blades. screws,and remove the display board. Loosen the screw of the drip proof plate. Lift and remove the electrical box. Domestic Air Conditioner...
  • Page 91 HSU-18HEA03/R2(DB)-I Removal Procedure 9.1.6 Removal of Fan Drain pan and Electrical Box Step Procedure Points Loosen the 2 screws. Pull out the drain pan. Discharge the static electricity Loosen the screw of from your body the drip proof plate. before touching the...
  • Page 92 HSU-18HEA03/R2(DB)-I Removal Procedure 9.1.7 Removal of Fan Motor and Heat Exchanger Step Procedure Points 1. Remove the right side plate. Loosen the 2 screws. Remove the Lift up the evaporator Be careful not to evaporator. 3. Remove the fan. Loosen the 2 screws.
  • Page 93 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Lift up the right part of the fan motor and slide it to the rightward to remove. Lift up the right part of the fan and remove it Domestic Air Conditioner...

  • Page 94: The Removal Procedure Of Outdoor

    HSU-18HEA03/R2(DB)-I Removal Procedure 9.2 The removal procedure of Outdoor Unit HSU-18HEA03/R2(DB)-I 9.2.1 Removal of Outdoor panel Step Procedure Points 1. Features Loosen the service Be careful not to cover screw and remove the service cover. exchanger. Domestic Air Conditioner...
  • Page 95 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points 2. Remove the panels. Loosen the 4 screws and lift the top panel Loosen the screws of the panel. Pull and remove the front panel. Domestic Air Conditioner...
  • Page 96 HSU-18HEA03/R2(DB)-I Removal Procedure 9.2.2 Romoval of Electrcal Box Step Procedure Points screws, then lift the electrical box Domestic Air Conditioner...
  • Page 97 HSU-18HEA03/R2(DB)-I Removal Procedure 9.2.3 Romoval of the Side panel Step Procedure Points screws and remove the side panel. Domestic Air Conditioner...
  • Page 98 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Remove the back panel. screws and remove the side panel. 9.2.3 Romoval of Fan and Fan Motor Domestic Air Conditioner...
  • Page 99 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Put the lead wire Loosen the throughthe back of motor when remove the fan assembling. (so as not to entangled with the propeller fan) Domestic Air Conditioner...
  • Page 100 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points screws and lift the fan motor. Domestic Air Conditioner...
  • Page 101 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points screws, then lift the fan motor bracket Domestic Air Conditioner...
  • Page 102 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points screws, then lift the proof plate. Domestic Air Conditioner...
  • Page 103 HSU-18HEA03/R2(DB)-I Removal Procedure 9.2.5 Romoval of compressor and heat exchanger Step Procedure Points Cut down the conecting pipe and pull out the compressor and remove the value bracket. Domestic Air Conditioner...
  • Page 104 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Loosen the marked Domestic Air Conditioner...
  • Page 105 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points hook and remove the heat exchanger Domestic Air Conditioner...
  • Page 106 HSU-18HEA03/R2(DB)-I Removal Procedure Step Procedure Points Remove the valve bracket. Domestic Air Conditioner...

  • Page 107: Appendix

    Appendix HSU-18HEA03/R2(DB)-I 10. Appendix 10.1 Piping Diagrams Domestic Air Conditioner...
  • Page 108 Appendix HSU-18HEA03/R2(DB)-I 10.2 Wring Diagrams INDOOR UNIT WIRING DIAGRAM 0010518046 RECEIVER DISPLAY LOUVER MOTOR CN601 ION GENERATOR CON001 CON002 CON003 CON2 CON605 CON1 CON004 CON606 CON5 CON005 CON607 CON3 CN001 Domestic Air Conditioner...

  • Page 109: Outdoor Unit Wiring Diagram

    Appendix HSU-18HEA03/R2(DB)-I OUTDOOR UNIT WIRING DIAGRAM 0010518047 COMPRESSOR AC-L CN28 C(W) R(U) AC-N S(V) FUSE1 CN25 T25A 250VAC CN24 OUTDOOR PCB CN36 CN11 MODULE COM COMB COMA CN23 CN10 MODULE POWER MOUDLE PCB AC-L OUT AC-L OUT CN10 AC-N OUT CN6...

  • Page 110: Circuit Diagrams

    Appendix HSU-18HEA03/R2(DB)-I 10.3 Circuit Diagrams 1A-800V-500ns-FR106 +15V CON005 R010 D006 10 -1/4W E007 CON003 ZD003 R009 E006 10uF/25V-105 18V-1W 1.5K -1/4W D002 1N4007 10uF/25V-105 310V NTC001 0.0047UF/275VAC C003 SCK084R72 0.0022UF/250V +12V T001 CON001 D001 1N4007 C005 C008 220VL R001 0.0022UF/250V...
  • Page 111 Appendix HSU-18HEA03/R2(DB)-I Outdoor Unit control board Circuit Diagrams CN10 AC -L OUT AC -N OUT AC-N OUT AC -L OUT CN14 CN13 COM COM L FUSE1 PTC1 2U/450V T25A 250VAC 470N AC -L 100/1W S14K350 225/275V 225/275V 225/275V 8MH/20A 8MH/20A...
  • Page 112 Appendix HSU-18HEA03/R2(DB)-I module board Circuit Diagrams Outdoor Unit 5.2MH/20A D207 FFA30U60DN PS21865 AC-L C405 C404 SGH40N60UF 474/275V 474/275V 820U/400V*2 R215 R225 5.1k D25BX60B R222 470 D206 0.015/5W 0.015/5W 24V/1W AC-N R214 9 10 11 12 13 14 15 16 17 18 19 20 21...

  • Page 113: Decription Of Coding Rules Of Unit Model

    H-heat pump Nominal cooling capacity (18000BTU/h) The structure code of indoor & outdoor unit: S(wall-mounted) H-Abbreviation of Haier Examples: HSU-07RD03/R1,It represents wall-mounted split type heat pump air conditioner .The cooling capacity is 7000BTU/h,and the power supply is 220-230V/50Hz,”D” means the developing sequence,and"R1"...
  • Page 114 18HEA (DB)-I Sun Qiang...

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