HSU12/18VHJ(DB) of indoor unit Main functions and control specifications of outdoor unit Function of main thermistor Value of thermistor Caution for diagnosis 3 Error codes and description indoor display For 12K indoor unit For 18K indoor unit For 12/18K outdoor unit...
HSU12/18VHJ(DB) 4.1 Indoor unit Connectors 1) CN26 Connector for fan motor 2) CN11 Connector for STEP motor 3) CN8 Connector for heat exchanger thermistor and Room temperature thermistor 4)CN27 Connector for fan feedback 5)CH1 Connector for power L wire 6)CON2 Connector for power N wire...
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HSU12/18VHJ(DB) Domestic Air Conditioner...
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HSU12/18VHJ(DB) 1) CN26 Connector for fan motor 2) CN1 Connector for heat exchanger thermistor and Room temperature thermistor 3) CN11 Connector for UP&DOWN STEP motor 4) CON2 Connector for power N wire 5) CON1 Connector for power L 6) CN32 Connector for display board...
HSU12/18VHJ(DB) Outdoor unit 1) CN1 CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN22 Connector for DC POWER 15Vand 5V to the module board 4) CN16 Connector for electric expansion valves 5) CN21 Connector for DC fan motor...
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HSU12/18VHJ(DB) CN11 CN10 Domestic Air Conditioner...
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HSU12/18VHJ(DB) 1) CN1 CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN22 Connector for DC POWER 15Vand 5V to the module board 4) CN16 Connector for electric expansion valves 5) CN21 Connector for DC fan motor...
This specification use for HSU12/18VHJ DB frequency conversion air condition are manufactured by Haier air condition parent company. "Setting value" (express in parameter) in this specification means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter table].
HSU12/18VHJ(DB) When the compressor is working and the max setting for indoor fan motor is medium or weak, the upper limit of indicated frequency is as follows: Frequency control form for wind volume Limited frequency Limited frequency variables Medium wind volume...
HSU12/18VHJ(DB) 20 seconds after the compressor stops, the up wind volume is weak (switching to SSLO in silent running mode) and then slightly weak. While the down wind volume is stoped If the compressor stops when the heat running starts, the wind volume is weak Under the dehumidification mode the fan motor stops as the compressor stops The operation is weak after 3 minutes’...
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HSU12/18VHJ(DB) is in cooling mode, it operates with powerful cooling or silent cooling. When the main unit is in heating mode, it operates with powerful heating or silent heating. When the main unit is in wind-sending mode, there are no powerful or silent modes.
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HSU12/18VHJ(DB) a. After setting the sleeping function, the refrigerating mode and dehumidification mode will run as per the following rules: 1 hour 1 hour 6hours T( ) Ts+4 Ts+2 Sleep t(hour) b.After setting the sleeping function, the heating mode will run as per the following rules:...
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HSU12/18VHJ(DB) Rated Cooling: When receiving the instruction of indoor unit rated operation, the unit will start rated cooling operation. Rated Heating: When receiving the instruction of indoor unit rated operation, the unit will start rated heating operation. Domestic Air Conditioner...
HSU12/18VHJ(DB) 5.2 Main functions and control specification of outdoor unit Sensor Code Definition: Tai= Indoor Ambient Temperature, Tao=Outdoor Ambient Temperature, Tc1=Indoor Coil, Td= Air Discharge, Te= Outdoor Coil, Ts=Air Intake 5.2.1 Outdoor Unit Operation Frequency and Control Compressor Operation Frequency Range:...
HSU12/18VHJ(DB) 5.2.2 Outdoor fan control Outdoor < Temperature Cooling/ Dehumidification Heating Cooling/ Dehumidification: Compressor Operation Frequency Hz <25 Heating: Compressor Operation Frequency (Hz) <25 When compressor shuts down in cooling mode, outdoor fan automatically jumps to low speed and blows residual heat for 30s and stop.
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HSU12/18VHJ(DB) TE C×TA Among which: C:TA 0 C=0.8 TA 0 C=0.6 For area prone to frost, the value is set at 6 when unit leaves the factory. Defrosting entry temperature control -15 C×TA time interval between two defrosting cycles is 45 minutes.
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HSU12/18VHJ(DB) 5.2.6 System Protection Function Time interval between compressor shutdown and restart is set at 3 minutes to ensure that compressor will only restart after 3-minute shutdown and initial energization valves are turned on to adequate opening position after being fully turned off.
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HSU12/18VHJ(DB) Cooling: When outdoor temperature is lower than 23 , cooling operation will start, compressor frequency is limited to less than 50 HZ, outdoor wind speed is forced at level 1. Heating: When outdoor temperature is higher than 18 , heating operation will start, compressor frequency is limited to less than 53 HZ, outdoor wind speed is forced at level 1.
HSU12/18VHJ(DB) 5.3 Function of Main Thermistor A:Outdoor suction temperature sensor B: Exhaust temperature sensor C: Indoor heat-exchange sensor The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
HSU12/18VHJ(DB) Operation Press CLOCK button, "AM" or "PM" flashes. Press to set correct time. Each press will increase Emergency Operation: or decrease 1min. If the button is kept pressed,time will Use this operation only when the change quickly. After time setting is confirmed,press SET, remote controller is defective or lost.
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HSU12/18VHJ(DB) Operation In AUTO mode The unit operates in corresponding sleep Before going to bed, you can simply press the mode adapted to the automatically selected SLEEP button and unit will operate in SLEEP operation mode. mode and bring you a sound sleep.
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HSU12/18VHJ(DB) system configration Operation IMPORTANT INFORMATION REGA- Set clock correctly before starting TIMER operation. RDING THE REFRIGERANT USED 1.After unit starts, select your desired operation mode. 2.Press TIMER button to change TIMER mode. Every Contains fluorinated greenhouse gases time the button is pressed, display changes as follows:...
HSU12/18VHJ(DB) Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral Do not use water wipe the controller with a detergent diluted with water.Wring the water...
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HSU12/18VHJ(DB) system configration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found,...
HSU12/18VHJ(DB) system configration Trouble shooting Cautions grille of the air Do not obstruct or cover the ventilation Before asking for service, check the following first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner .In no...
HSU12/18VHJ(DB) Functions and control 7 Service Diagnosis 7.1 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.
HSU12/18VHJ(DB) Functions and control 7.3.1Thermistor or Related Abnormality (indoor unit) : Room temperature sensor failure : Heat-exchange sensor failure the temperatures detected by the thermistors are used to determine thermistor errors when the thermistor input is more than 4.92V or less than 0.08V during compressor operation.
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HSU12/18VHJ(DB) Functions and control 7.3.2 Indoor fan motor malfunction Indoor display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection Malfunction when the detected rotation feedback singal don’t receiced in 2 minutes...
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Functions and control HSU12/18VHJ(DB) Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan motor connector,then turn power ON Does it rotate? Check output of fan motor connector I s m o t o r p o w e r...
Functions and control HSU12/18VHJ(DB) 7.3.3 IPM protection LED1 flash 2 times: IPM protection is detected by checking the compressor running condition and so on. The system leads to IPM protection due to over current The compressor faulty leads to IPM protection...
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HSU12/18VHJ(DB) Functions and control tester) Normal resistance Several k to several M ( ) Unacceptable resistance Short (0 ) or open 7.3.4 The IPM and outdoor PCB don’t communicate or Related Abnormality LED1 flash 4 times Indoor Display Communication is detected by checking the IPM module and the outdoor PCB...
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Functions and control HSU12/18VHJ(DB) 7.3.5 Thermistor or Related Abnormality(outdoor unit) LED1 flash 10 times: LED1 flash 13 times: LED1 flash 12 times: LED1 flash 11times: This type of error is detected by checking the thermistor input voltage to the microcomputer.
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HSU12/18VHJ(DB) Functions and control 7.3.6 Overheat Protection For Exhaust Temperature LED1 flash 8 times the exhaust temperature control is checked with the temperature being detected by the exhaust pipe thermistor when the compressor discharge temperature is above 117 Electronic expansion valve defective...
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Functions and control HSU12/18VHJ(DB) Pull out the exhaust sensor and measure its The sensor is damaged. Replace the sensor resistance standard temperatures with a new one. according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.
HSU12/18VHJ(DB) Functions and control 7.3.8 Communication error between the indoor and outdoor units LED1 flash 15 times The date received from the another unit in indoor unit-outdoor unit signal transmission is checked whether is normal When the date sent from the another unit cannot be received normally,or when the content...
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HSU12/18VHJ(DB) Functions and control Check the status of LED1 on the indoor mainboard. If the LED1 blinks measure voltage between Jumpers 3 and 4 of IC8 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
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HSU12/18VHJ(DB) Functions and control 7.3.9 Power Supply Over or under voltagve fault LED1 flash 6 times An abnormal voltage rise or fall is detected by checking the specified voltage detection An voltage signal is fed from the voltage detection circuit to the microcomputer...
Functions and control HSU12/18VHJ(DB) 7.3.10 Loop of the station detect error LED1 flash 18 times Indoor Display LED1 flash 19 times Indoor Display The position of the compressor rotor can not detected normally when the The wiring of compressor is wrong or the connection is poor;...
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HSU12/18VHJ(DB) Installations 8. Installations 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...
VHJ(DB) 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.
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VHJ(DB) Installation of Outdoor Unit Outdoor unit Drawing for the installation of indoor and outdoor units Install according to Indoor unit Connection of pipes To bend a pipe, give the roundness as large as possible not to crush the pipe , 4G0.75mm and the bending radius should be 30 to 40 mm or longer.
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VHJ(DB) No gas leakage? On Drainage In case of gas leakage, tighten parts of pipe connection. If leakage stops, then proceed 6. steps Please install the drain hose so as to be downward slope without fail. Please don’t do the drainage as shown below. If it does not stop gas leakage, discharge whole refrigerants from the service port.
HSU12/18VHJ(DB) Removal Procedure 9. Removal Procedure 9.1 For 12K Indoor unit 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. 1. Features 2. Remove the front panel...
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Removal Procedure VHJ(DB) Pull the front panel out horizontally and remove it.
Removal Procedure VHJ(DB) 9.1.2 Removal of Air Filter Insert the air upwards slightly and then pull it when installing. out downwards. When installing, insert 2 hooks of the...
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Removal Procedure VHJ(DB) 9.1.3 Removal of the blade Release the Insert the air marked hooks. Pull out and when installing. remove the blade. When installing, insert 2 hooks of the...
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Removal Procedure VHJ(DB) 9.1.4 Removal of Front Case Release the screw covers Loosen the 2...
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Removal Procedure VHJ(DB) Loosen the marked hooks. Pull out the front case.
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VHJ(DB) Removal Procedure 9.1.5 Removal of Vertical Blades and Display Board 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.
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VHJ(DB) Removal Procedure 9.1.6 Removal of Fan Drain pan and Electrical Box 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 Lift and remove electrical parts like the electrical box.
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Removal Procedure VHJ(DB) 9.1.7 Removal of Fan Motor and Heat Exchanger 1. Remove the You can detach the indoor right side plate. unit without removing the Loosen the assembly of the outlet grille. 2 screws. Caution If gas leaks, repair the spot of leaking, then collect all refrigerant from the unit.
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Removal Procedure VHJ(DB) 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...
Removal Procedure HSU12/18VHJ(DB) 9.2 For 18K indoor unit 9.2.1 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. Remove the front panel.
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Removal Procedure VHJ(DB) 9.2.2 Removal of Air Filter Step Procedure Points Lift an air filter upwards slightly and then pull it out downwards. Insert the air filters along grooves when installing. When installing, insert 2 hooks of the air filter completely.
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VHJ(DB) Removal Procedure 9.2.3 Removal of Horizontal Blade And Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal The horizontal blade is blade.
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Removal Procedure VHJ(DB) Step Procedure Points Loosen the marked f ive screws Release the marked four hooks. When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught prop e rly.
VHJ(DB) Removal Procedure 9.2.4 Removal of Drain pan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the front grille. Remove the assembly of the reduction motor. 1.
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VHJ(DB) Removal Procedure 9.2.5 . Removal of Vertical Blades and Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the marked screws Push the hooks on the back of the vertical blades and remove.
VHJ(DB) Removal Procedure 9.2.6 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the front grille. Discharge the static electricity from your body 1.
HSU12/18VHJ(DB) Removal Procedure 9.2.7 Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points You can detach the indoor unit without removing the assembly of the outlet grille.
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VHJ(DB) Removal Procedure 9.2.8 Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the screws. Remove the right side plate.
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Appendix HSU12/18VHJ(DB) 10.2.2.Outdoor unit FOR12K 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.
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Appendix HSU12/18VHJ(DB) FOR18K 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.