SERVICE MANUAL Order No.AC1108S003V0 Wall mounted Type DC Inverter EK-Series Model No . HSU24VHG(DB)-G&W indoor unit and remote controller outdoor unit 2012...
Table of Contents Table of Contents 1. Introduction ………………………………………………………………………………….. 2. List of Functions …………………………………………………………………………….. 3. Specifications ……………………………………………………………………………….. 4. Printed Circuit Board ConnectorWiring Diagram …………………………………….. 5. Functions and Control ………………..………………………..…………….………..5.1 Main functions and control specifications of indoor unit …….………...…………. 5.2 Main functions and control specifications of outdoor unit ……………..……………… 5.3 Value of Thermistor …………………………………....………..…………………….
Introduction 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” items can also lead to serious accidents under some conditions if they are not followed.
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.
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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.
Introduction Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. 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.
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Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.
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Functions Category HSU24VHG(DB)-G&W Healthy negative ion make your room full of an abundance natural negative ions. Avoid the child's wrong operation on the remote controller Child lock The 3D airflow is able to deliver the airflow horizontally and vertically. 3D air flow 24Hour timer Use the timer function to set on,or off,or from on to off,or from off to on The panel is easy to wash and the airflow vents can be detached easily...
Connector Wiring Diagram 4.Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors Connectors PCB(1) (Control PCB) For HSU-24HEG03/R2(DB) 1) CN9 Connector for fan motor 2) CN6 Connector for heat exchanger thermistor and Room temperature thermistor 3) CN5 Connector for UP&DOWN STEP motor 4) CN21 Connector for power N wire 5) CN22 Connector for power L 6) CN7 Connector for display board...
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Connector Wiring Diagram 4.2: outdoor unit Connectors PCB(1) (Control PCB) 1) CN1 CN2 Connector for power N and L 2) CN3 CN8 Connector for ground 3) CN23 Connector for DC POWER 15Vand 5V to the module board 4) CN9 CN10 Connector for CN9,CN8 on the module board 5) CN22 Connector for fan motor 6) CN11 Connector for four way valve coil 7) CN17,CN18,CN19,CN20,CN21,CN47 Connector for thermistors...
Functions and Control 5.Funcitions and Control 5.1 Main functions and control specification of indoor unit 5.1.1 Automatic operation 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.
Functions and Control °F * temperature control range: 60---105 °F * temperature difference: Control feature: send the demoisture signal to the outdoor system. When Tr>Ts+ , the compressor will be turned on, the indoor fan will operate at the set speed. °F °F When Tr is between the Ts and Ts+ 15 , the outdoor system will operate at the high demoisture...
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Functions and Control Automatic: When Tr<Ts, high speed. °F When Ts≤Tr≤Ts+15 , medium speed. When Tr> Ts+15 °F , low speed. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch.
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Functions and Control mode, then the heating strength/ mute function will be offered; if the system enters the airflow mode, there will be no strength/ mute function. 5.1.6 Mute operation the system enters the mode after receiving the ‘mute signal’. a.
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Functions and Control 2.2 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.
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Functions and Control will be stored in the malfunction resume and will not be revealed. 5.1.12 High load protection control The outdoor system will be stopped if the coil temperature is above for 2 minutes. The indoor °F fan will be controlled by the thermostat. The outdoor system can be restarted when the coil temperature is below and the system has been stopped for 3 minutes.
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Functions and Control Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will store the code into E2 for the malfunction list resume. The indoor system will continue to operate according to the original status, the malfunction code will not be revealed or processed. transmission abnormality: If the indoor system can’t receive the outdoor system for 8 minutes, the communication abnormality can be confirmed and reported and the outdoor system will be stopped.
Functions and Control signal to the outdoor system. Meanwhile, you can fix the indoor system at high speed mode, the location of the airflow directin board can be switched to the maximal position. c. Quitting condition: The fixed frequency heating can be quitted after receiving the remote signal, and the system will enter the remote setting status.
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Functions and Control The minimum/maximum frequency limitation A While refrigerating: is the maximum operation frequency of the compressor; is the minimum operation frequency of the compressor. B While heating: is the maximum operation frequency of the compressor; is the minimum operation frequency of the compressor. The frequency limitation which is affected by the environment temperature.
Functions and Control K= Ki/the number of running machines The indoor set Breeze Medium High Strong Quiet Healthy airflow speed airflow The percentage 100% 180% rated frequency Ki The calculation of the actual output frequency: when there is no healthy airflow: F =F-ED-* P K When the healthy airflow has been set: F =F-ED-* P K airflow speed K healthy airflow When refrigerating, it is needed to satisfy...
Functions and Control 5.2.3 The control of the outdoor electronic expansion valve When starting the compressor: the opening size of the valve must be guaranteed to have entered into the standard opening size, and then the compressor can be started. When refrigeration is in vain (the machine is shut down or is in the state of retrograde operation), the opening size of the expansion valve of the indoor unit is 5 steps;...
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Functions and Control 5.2.5.2 TC high temperature-preventing control of the indoor heating unit Tpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with the running state). The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is higher than °F , decrease the rotate speed of the compressor and do the high...
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Functions and Control 5.2.5.4 The protection function of AC current: During the starting process of the compressor, if the AC current is greater than 15A, the frequency of the compressor decreases at the speed of 1HZ/second. During the starting process of the compressor, if the AC current is greater than 13A, the frequency of the compressor decreases at the speed of 0.1HZ/second.
Functions and Control When Tpg_indoor begins to rise again, and ice_temp_15 ≤ Tpg_indoor ≤ ice_temp_19 the frequency °F of thecompressor doesn’t change. °F When ice_temp_3 Tpg_indoor ice_temp_3+19 ,the frequency of the compressor increases at the speed of 1HZ/10seconds. For example, Tpg_indoor ≤ 9 last for 2 minutes, and then the outdoor unit will stop, and report °F underload malfunction, but don’t send malfunction report to the indoor.
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Functions and Control T em p.( M a x.(K Ω ) N orm al(K Ω ) M in.(K Ω ) T olerance( ° F ° F 165.2170 147.9497 132.3678 2.792 14.6 155.5754 139.5600 125.0806 2.824 14.568 146.5609 131.7022 118.2434 2.888 14.536 138.1285 124.3392...
System Configration Parts and Functions Remote controller Indoor Unit Additional functions display Supplemented electrical Operation mode QUITE SLEEP HEALTH POWER heating Remote controller 9. QUIET button 10. HEAT button 11. COOL button 12. AUTO button 13. FAN button fan speed) 14.
System Configration Operation Base Operation Emergency operation and test operation Emergency Operation: Use this operation only when the remote controller is defective or lost, and with function of emergency running, air conditoner Remote controller can run automatically for a while. When the emergency operation switch is pressed, the "...
System Configration Operation Sleep Operation 4. In FAN mode It has no SLEEP function. Press button to enter additional options, when 5.Set the wind speed change when sleeping cycle display to will flash. And then press If the wind speed is high or middle before setting for the enter to sleep function.
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System Configration EUROPEAN REGULATIONS Operation CONFORMITY FOR THE MODELS Timer On/Off On-Off Operation All the products are in conformity with the following European provision: 1.After unit starts, select your desired operation mode. - Low Voltage Directive 73/23/EEC 2.Press TIMER button to change TIMER mode. Every - Low Voltage Directive 2006/95/EC time the button is pressed, display changes as follows: -Electomagnetic CompatibilitY 89/336/EEC...
System Configration 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 temperature soft and dry cloth.For serious stains, use a neutral detergent diluted with Do not usewater,wipe the controller water.Wring the water out of the...
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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, Use an exclusive immediately stop the operation button and power source...
System Configration Trouble shooting Cautions Before asking for service, check the following Do not obstruct or cover the ventilation grille of the air first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Phenomenon Cause or check points Do not allow children to play with the air conditioner .In no When unit is stopped, it won't restart...
Service Diagnosis 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. 2.When a signal transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.
Service Diagnosis 7.3.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Outdoor display LED1 flash 10 times Defrost temperature sensor failure LED1 flash 11 times Suction temperature sensor failure 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 thermistors errors.
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Service Diagnosis 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 signal don’t received in 2 minutes Decision Conditions Supposed Causes...
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Service Diagnosis Turn off power supply and rotate fan by hand Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan Does it rotate? motor connector, then turn power ON Check output of fan motor connector Is motor power voltage DC310V...
Service Diagnosis 7.3.3 Outdoor DC fan motor fault Check whether Terminal on the outdoor mainboard is well inserted. Is it normal? Reinsert the terminals Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor...
Service Diagnosis 7.3.4 IPM protection Outdoor display LED1 flash 2 times. Indoor Display F1 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. Decision The compressor faulty leads to IPM protection.
Service Diagnosis 7.3.5 The communication fault between IPM and outdoor PCB Outdoor display LED1 flash 4 times Indoor Display 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 Decision The IPM module broken leads to communication fault Conditions...
Service Diagnosis 7.3.6 Overheat Protection For Discharge Temperature Indoor display 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 Decision Conditions Supposed...
Service Diagnosis 7.3.7 EEPROM abnormal Indoor Display Indoor EEPROM error F12 Outdoor EEPROM error LED1 flash 1 times Method of The Data detected by the EEPROM are used to determine MCU. Malfunction Detection Malfunction When the Data of EEPROM is error or the EEPROM is damaged. Decision Conditions Supposed...
Service Diagnosis 7.3.8 Communication error between the indoor and outdoor units Indoor display Outdoor display LED1 flash 15 times. Method of The date received from the another unit in indoor unit-outdoor unit signal transmission is Malfunction checked whether is normal Detection Malfunction When the date sent from the another unit cannot be received normally,or when the content...
Service Diagnosis 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...
Service Diagnosis 7.3.9 Power Supply over or under voltage fault Indoor display Outdoor display: LED1 flash 6 times Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction Detection Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer Decision Conditions Supposed...
Service Diagnosis 7.3.10 Loop of the station detect error Outdoor Display LED1 flash 18 times Indoor Display F11 LED1 flash 19 times Indoor Display F28 Method of The position of the compressor rotor can not detected normally Malfunction Detection Malfunction When the wiring of compressor is wrong or the connection is poor;...
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Service Diagnosis 7.3.11 Over-current of the compressor Outdoor Display LED1 flash 3 Indoor Display F22 LED1 flash 24 Indoor Display F2 LED1 flash 25 Indoor Display F23 Method of The current of the compressor is too high Malfunction Detection Malfunction When the IPM Module is damaged Decision Or the compressor is damaged...
Installtion Installation Manual of Room Air Conditioner Preparation Necessary Tools for Installation Selection of Installation Place Indoor Unit - Select a location that is Torque wrench Hammer (17mm,22mm,26mm) Nipper Robust not causing vibration, where the unit can be supported s ufficiently. Pipe cutter Hacksaw Not affected by heat or steam generated in the vicinity, and where the inlet and outlet of...
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Installtion Accessory parts Making a Hole on the Wall and Fitting the Piping Hole Cover Drain hose (1) Remote controller (1) Make a hole of B mm / inches in diameter, slightly descending to outside the wall. Install piping hole cover and seal it off with putty after installation Cushion (4) AAA dry battery (2) Pitch downward for drainage...
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Installtion Outdoor unit Connecting the indoor/outdoor Electric Cable Installation of Outdoor Unit Removing the wiring cover Install according to the instructions on the 1st page of this manual Remove terminal cover at right bottom corner of indoor unit, then take off wiring cover by removing its screws.
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Installtion Power Source Installation Connection Loosen the screws on terminal block and insert the wires fully into terminal The power source must be exclusively used for air conditioner. block, then tighten the screws. In the case of installing an air conditioner in a moist place, please install an ea- If wiring is not correct, the unit will not operate properly and it could cause a rth leakage breaker.(GFCI) For installation in other places, use an HVACR circuit breaker of time delay fuse.
Removal Procedure 9.2 The removal procedure of outdoor 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. Domestic air conditioner...
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Removal Procedure 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...
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Removal Procedure 9.2.2 Romoval of Electrcal Box screws, then lift the electrical box Domestic air conditioner...
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Removal Procedure 9.2.3 Romoval of the Side panel screws and remove the side panel. Domestic air conditioner...
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Removal Procedure Remove the screws and remove the side panel. Domestic air conditioner...
Removal Procedure 9.2.4 Removal of fan and fan motor Put the lead wire Loosen the of motor when remove the fan the propeller fan) Domestic air conditioner...
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Removal Procedure Step Procedure Points screws and lift the fan motor. Domestic air conditioner...
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Removal Procedure Step Procedure Points screws, then lift the Domestic air conditioner...
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Removal Procedure Step Procedure Points screws, then lift the proof plate. Domestic air conditioner...
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Removal Procedure Step Procedure Points Cut down the and pull out the compressor and remove the Domestic air conditioner...
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Removal Procedure Step Procedure Points Domestic air conditioner...
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Removal Procedure Step Procedure Points Domestic air conditioner...
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Removal Procedure Step Procedure Points Remove the Domestic air conditioner...
Circuit Diagrams 11.2.2 module board Circuit Diagram C N8 PS 219 97-4A C N3 C N4 D207 C N5 FF AF 30U60 DN C N1 C N6 C 404 C 406 C 405 SGH40N60 UF D 47 4/630 V 47 4/630 V 47 4/275 V (40A@25 AC-L...
Nominal cooling capacity (24000 BTU/h) M-Multi match:one outdoor unit can match different indoor unit The structure code of indoor 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"...
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The end Sincere Forever Haier Group Chen Huimin Yu Huali Wang Fei 86 532 88936935 Wu Hongjin HSU-24HEG03/R2(DB)-SM...