Haier U Series Service Manual
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Haier U Series Service Manual

Dc inverter wall mounted type
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  • Page 3: Table Of Contents

    HSU-09,12H03/U(DBPZXF) Table of Contents 9.3 Removal of Assembly of Front Panel Mechanism……………………...…….. 104 9.5 Removal of Horizontal Blade…………………………………………………….109 9.6 Removal of Reduction Motor…………………………………...……………….110 9.7 Removal of Outlet Grille………………………………………………………….112 9.8 Removal of Vertical Blades and Swing Motor…………………….……………117 9.9 Removal of Electrical Box………………………………………………..………119 9.10 Removal of Heat Exchanger…………………………………………………...121 9.11 Removal of Fan Rotor and Fan Motor……………………………...…………125 9.12 Removal of Electrical Box…………………..…………...…………...…..126...
  • Page 4 HSU-09,12H03/U(DBPZXF) 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.
  • Page 5 HSU-09,12H03/U(DBPZXF) 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 HSU-09,12H03/U(DBPZXF) 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 HSU-09,12H03/U(DBPZXF) Introduction 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 plug has dust or loose connection, it can cause an electrical shock or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 8 HSU-09,12H03/U(DBPZXF) Introduction 1.1.4 Using Icons Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below: 1.1.5 Using Icons List Icon Type of Information Description A “note” provides information that is not indispensable, but may Note: Note nevertheless be valuable to the reader, such as tips and tricks.
  • Page 9 PZXF...
  • Page 13 Connector wiring Diagram HSU-09,12H03/U(DBPZXF) PCB1 PCB2 PCB1: control PCB CN2 connector for electronic inflated valve CN4/CN8connector for CN1/CN2 in PCB2 for supply 310V CN19/CN21/CN22/CN20 connector for suction/defrost/ambient/compressor sensor CN3 connector for CN10 in PCB3 CN14 connector for 4-way valve CN18/25/26 connector for fan motor CN9 connector for N(IN) in PCB3 CN6 is L wiring CN7 is N wiring...
  • Page 14 Connector Wiring Diagram HSU-09,12H03/U(DBPZXF) PCB1 Domestic Air Conditioner...
  • Page 15 HSU-09,12H03/U(DBPZXF) Connector Wiring Diagram PCB2 CN10 PCB3 Domestic Air Conditioner...
  • Page 16 Functions and Control HSU-09,12H03/U(DBPZXF) 5.Funcitions and Control 5.1 Main functions and control specification of indoor unit Note: See the list of functions for the functions applicable to different models. 5.1.1Temperature Ajusting function This function will decide the outdoor-set’s running speed according to the domestic Set temperature temperature and the set temperature.
  • Page 17 Functions and Control HSU-09,12H03/U(DBPZXF) Deviation Work out the deviation of temperature level as follows: In heating mode: E=(Remote-control set temperature+ modified value)-room temperature In cooling mode: E= room temperature -(Remote-control set temperature + modified value) E is minus and |E|> T The compressor stops after 120 seconds of continuous detection Compressor When the operation starts,according to the table above, the unit will operate according to...
  • Page 18 Functions and Control HSU-09,12H03/U(DBPZXF) Within different levels, the indicated frequencies are(the frequency the indoor unit Frequencies for different transmits to the outdoor unit) as follows Under the silent mode, levels A-E have the same frequency with level F levels Indicated frequency Frequency Temperature range...
  • Page 19 Functions and Control HSU-09,12H03/U(DBPZXF) Warm boot When the heat running starts or the frost removing ends and the compressor starts again, in order to avoid cold wind, warm boot wind volume control should be done. Heat exchange temperature To control the indoor blower fan as shown in the table above according to the heat exchange temperature When the heat exchange temperature rises to the level between THHOT1 and HHOT2 and even after 4 minutes it cannot reach the level between THHOT2 and THHOT3, enter into the next level...
  • Page 20 Functions and Control HSU-09,12H03/U(DBPZXF) 5.1.4 Powerful Running Powerful running for 15 minutes The running ends the powerful running after 15 minutes The mode switch ends the powerful running Enter into the silent mode, normal running mode or timed switching on mode to end the powerful running When in automatic mode, there are powerful and silent functions for your choice.
  • Page 21 Functions and Control HSU-09,12H03/U(DBPZXF) When this function is set, operation modes on the panel display will not change. The timing icon will show and the operation stops when the set time comes. When this function is on, the panel display will only display a question mark. Timed The unit will operate as the set mode when the time comes.
  • Page 22 Functions and Control HSU-09,12H03/U(DBPZXF) The wind panels may sway or stay at a position. The wind speed could be low,medium ,high or automatic. 5.1.10 Trial running The indicated frequency for trial running is 58Hz, wind volume is strong. The trial running will last for 30 minutes and then the unit will be powered off. The unit will exit the trial running if it receives any remote-control signal during the trial running period.
  • Page 23 Functions and Control HSU-09,12H03/U(DBPZXF) 5.2.1 Outdoor Unit Operation Frequency and Control Compressor Operation Frequency Range Outdoor Temperature Heating 10RPM 110RPM 10RPM 110RPM Cooling 10RPM 98RPM 10RPM 98RPM Defrosting 88rpm Regardless of target frequency of indoor unit, each time when compressor is from off to on, Compressor it must maintain 58Hz,88Hz for one minute (Frequency will be immediately decreased under the condition that outdoor unit air discharge temperature overheating protection is activated or Startup...
  • Page 24 Functions and Control HSU-09,12H03/U(DBPZXF) 5.2.3 Outdoor Electronic Expansion Valve Control Energization Initial Operation: Valve Complete Off Operation Valve operation after compressor startup and shutdown: Compressor Startup: Opening of valve must ensure restart of compressor when reaching benchmark opening. Compressor Shutdown: It ensures complete off of valve after compressor shuts down. Valve operation when compressor is running Around the 2 minute after compressor startup, valve opening can be adjusted based on various outdoor...
  • Page 25 Functions and Control HSU-09,12H03/U(DBPZXF) 1 :Temperature of outdoor heat exchanger exceeds 7 for 80s continuously 2 : Temperature of outdoor heat exchanger exceeds 12 for 5s continuously 3 :Defrosting operation continues for 9 minutes. Compressor stops and external fan starts, 50s later, four-way valve will be on, 60s later, Defrosting Exit compressor will operate as per startup process.
  • Page 26 Functions and Control HSU-09,12H03/U(DBPZXF) Anti-freeze during cooling Indoor frequency rise (1HZ/10s) Heat Exchanger invariable frequency Anti-freeze Protection slow frequency drop (1HZ/10s) stop running When T compressor frequency will drop at a speed of 1HZ/10s When T starts to rise and 6 =T compressor frequency will remain unchanged.
  • Page 27 Functions and Control HSU-09,12H03/U(DBPZXF) Suction The system sets a target discharge temperature according to the outdoor and indoor heat Temperature exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained. Sensor The discharge pipe thermistor is used for controlling temperature of the discharge pipe. Exhaust Temperature If the temperature of discharge pipe (used in place of the inner temperature of the compressor) rises abnormally, the operating frequency drops or the operation halts.
  • Page 28 Functions and Control HSU-09,12H03/U(DBPZXF) 147.4409 135.0863 123.6153 -1.56 1.44 138.9148 127.4956 116.8717 -1.53 1.43 130.9337 120.3778 110.5374 -1.51 1.41 123.4597 113.7009 104.5852 -1.49 1.39 116.4577 107.4349 98.9897 -1.47 1.38 109.8953 101.5523 93.7278 -1.45 1.36 103.7422 96.0274 88.7774 -1.43 1.34 97.9708 90.8365 84.1185 -1.40...
  • Page 29 Functions and Control HSU-09,12H03/U(DBPZXF) 14.6700 13.9632 13.2743 -1.16 1.13 14.0599 13.3650 12.6889 -1.20 1.16 13.4786 12.7957 12.1325 -1.23 1.20 12.9244 12.2537 11.6035 -1.27 1.24 12.3960 11.7375 11.1004 -1.31 1.27 11.8921 11.2459 10.6218 -1.35 1.31 11.4113 10.7775 10.1665 -1.39 1.34 10.9526 10.3311 9.7330 -1.43...
  • Page 30 Functions and Control HSU-09,12H03/U(DBPZXF) 2.7845 2.5176 2.2735 -3.12 2.86 2.6931 2.4324 2.1943 -3.17 2.90 2.6050 2.3505 2.1182 -3.22 2.94 2.5203 2.2717 2.0451 -3.28 2.99 2.4388 2.1960 1.9749 -3.33 3.03 2.3602 2.1231 1.9075 -3.38 3.07 2.2846 2.0530 1.8426 -3.43 3.12 2.2118 1.9856 1.7803 -3.48...
  • Page 31 Functions and Control HSU-09,12H03/U(DBPZXF) Pipe Sensor R25 =10K 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 -1.91 1.73 138.1285 124.3392 111.8256 -1.89 1.71 130.2371...
  • Page 32 Functions and Control HSU-09,12H03/U(DBPZXF) 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 13.9436 13.4185 12.9017 -0.91...
  • Page 33 Functions and Control HSU-09,12H03/U(DBPZXF) 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 2.6232 2.4413 2.2700 -2.26...
  • Page 34 Functions and Control HSU-09,12H03/U(DBPZXF) 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 0.7059 0.6308 0.5632 -4.57...
  • Page 35 Functions and Control HSU-09,12H03/U(DBPZXF) 5.2.2 Outdoor Unit Ambient Sensor, Suction Sensor, Defrosting Sensor R25 =10K 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 -1.91...
  • Page 36 Functions and Control HSU-09,12H03/U(DBPZXF) 20.9688 19.9409 18.9463 -1.13 1.09 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...
  • Page 37 Functions and Control HSU-09,12H03/U(DBPZXF) 3.5374 3.3227 3.1183 -1.87 1.78 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...
  • Page 38 Functions and Control HSU-09,12H03/U(DBPZXF) 0.8983 0.8088 0.7275 -4.07 3.69 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...
  • Page 39 Functions and Control HSU-09,12H03/U(DBPZXF) 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...
  • Page 40 Functions and Control HSU-09,12H03/U(DBPZXF) 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...
  • Page 41 Functions and Control HSU-09,12H03/U(DBPZXF) 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...
  • Page 42 Functions and Control HSU-09,12H03/U(DBPZXF) 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...
  • Page 43 HSU-09,12H03/U(DBPZXF) System Configuration 6. System Configuration 6.1 System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.In order to meet this expectation of the users, giving sufficient explanations taking enough time can be said to reduce about 80% of the requests for servicing.
  • Page 44 HSU-09,12H03/U(DBPZXF) System Configuration 6.2 Instruction Cautions Disposal of the old air conditioner Safety Instructions and Warnings 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 45 HSU-09,12H03/U(DBPZXF) System Configuration 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 46 HSU-09,12H03/U(DBPZXF) System Configuration 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.
  • Page 47 HSU-09,12H03/U(DBPZXF) System Configuration 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 64 PZXF...
  • Page 65 PZXF...
  • Page 66 PZXF...
  • Page 67 HSU-09,12H03/U(DBPZXF) System Configuration 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. Caution Incomplete earthing may cause an electric shock.
  • Page 68 HSU-09,12H03/U(DBPZXF) System Configuration 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. Put off the power supply cord.
  • Page 69 HSU-09,12H03/U(DBPZXF) System Configuration 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. When the electric plug is pulled out and reinserted, the protection circuit will work for 3 minutes to protect the air conditioner.
  • Page 73 7.4.2 Fan Motor(DC Motor) or Related Abnormality The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation when the detected rotation feedback singal don’t receiced in 2 minutes Operation halt due to short circuit inside the fan motor winding. Operation halt due to breaking of wire inside the fan motor .
  • Page 74 Turn off power supply and rotate fan by hand Does rotate Replace fan motor smoothly? Check output motor connector and Turn power ON and operate fan Turn off power supply and disconnect Does it rotate? fan motor connector,then turn power Check outpue of fan motor connector Check rotation pulse input (pins 4-7).
  • Page 75 7.4.3 The IPM and outdoor PCB don’t communicate or Related Abnormality Communication is detected by checking the IPM module and the outdoor PCB The outdoor PCB broken leads to communication fault The IPM module broken leads to communication fault The outdoor PCB is broken The IPM module is broken Communication wiring disconnected Be sure to turn off power switch before connect or disconnect connector,...
  • Page 76 IPM protection 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 circuit component of IPM is broken and led to IPM protection IPM protection dues to the compressor faulty IPM protection dues to faulty PCB of IPM module Compressor wiring disconnected...
  • Page 77 7.4.4 Thermistor or Related Abnormality(outdoor unit) This type of error is detected by checking the thermistor input voltage to the microcomputer. (A thermistor error is detected by checking the temperature) The thermistor input is above 4.9V or below 0.1V with the power on. The values may vary slightly in some models Faulty connector connection Faulty thermistor...
  • Page 78 7.4.5 Overheat Protection For Exhaust Temperature the exhaust temperature control is checked with the temperature being detected by the exhaust pipe thermistor when the compressor discharge temperature is above 118 Electronic expansion valve defective Faulty thermistor Faulty PCB Be sure to turn off power switch before connect or disconnect connector, or else Troubleshooting parts damage may be occurred.
  • Page 79 7.4.8 Communication error between the indoor and outdoor units 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 of the data is abnormal indoor unit- outdoor unit signal transmission error due to wiring error Faulty PCB...
  • Page 80 Check the status of LED1 on the indoor mainboard. If the LED1 blinks interruptedly measure the voltage between Jumpers 3 and 4 of IC7 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a If the voltage is of a multimeter.
  • Page 81 7.4.9 High work-intense protection High work-intense control is activated in the heating mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Activated when the temperature being sensed by the heat exchanger thermistor rises above Faulty electronic expansion valve Dirty heat exchanger Faulty heat-exchange sensor Insufficient gas...
  • Page 82 7.4.10 Power Supply Over or under voltagve fault An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. An voltage signal is fed from the voltage detection circuit to the microcomputer Supply voltage not as specified the IPM module is broken the outdoor PCB is broken Troubleshooting...
  • Page 83 HSU-09,12H03/U(DBPZXF) Installations 8 Installation Read this manual before installation Explain sufficiently the operating means to the user according to this manual. 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)
  • Page 84 HSU-09,12H03/ a l l o i t Floor fixing dimensions of the outdoor unit (Unit:mm) 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 85 HSU-09,12H03/ a l l o i t 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, the mounting plate must be fixed horizontally.
  • Page 86 HSU-09,12H03/ a l l o i t Indoor unit 1. Insert the drain hose into the dent of heat insulation materials of indoor unit. 2. Insert the indoor/outdoor electric cable from backside of indoor unit, and pull it out on the front side, then connect them.
  • Page 87 HSU-09,12H03/U(DBPZXF) Installations Indoor unit 1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar qualified person. The type of connecting wire is H05RN-F or H07RN-F. 2. If the fuse on PC board is broken please change it with the type of T. 3.15A/250V. 3.
  • Page 88 HSU-09,12H03/U(DBPZXF) Installations 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 . Connecting the pipe of gas side first makes working easier.
  • Page 89 HSU-09,12H03/U(DBPZXF) Installations Outdoor unit 5.Purging Method: Push the air out of the indoor unit and piping as followes: (1) Remove the valve cap on 2-way valve in outdoor unit. (2) Loosen by 1/2 turn the flare nut of 3-way valve gas pipe, which is conneted to 2-way valve 9.52mm(3/8")
  • Page 90 HSU-09,12H03/U(DBPZXF) Installations 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. 2.Cutting and Flaring Work of Piping Pipe cutting is carried out with a pipe cutter and burs must be removed.
  • Page 91 HSU-09,12H03/U(DBPZXF) Installations -refresh system installation Welcome to use O -Refresh air conditioner, This installation manual introduces deal the installation steps of O -Refresh system and the cushions. For correctly installing and using O -refresh system,please read this manual carefully before installation. packing list: Name Amount...
  • Page 92 HSU-09,12H03/U(DBPZXF) Installations 3.Bend connector Connect to full energy recovery exchanger's pipe Connect to outdoor side of room air pipe 4.Room air pipe Indoor side of room air pipe Outdoor side of room air pipe Full energy recovery exchanger Room air exit Fresh air filter Fresh air entrance Power and controling block...
  • Page 93 HSU-09,12H03/U(DBPZXF) Installations Room air exit Fresh entrance Fresh air filter Fresh air exit Room air entrance, connect room air pipe Installation manual 1.The main unit installation Fixation screw Outdoor unit According to the drawing, install the full energy recovery exchanger on the corresponding place of the outdoor unit, and fix the fittings on the outdoor unit cover with the screws.
  • Page 94 HSU-09,12H03/U(DBPZXF) Installations 2.Small size outdoor unit installation sketch Fixation screw According to this sketch, follow this step when install the full energy recovery exchanger on the small out door unit: 1. Unscrew the fixation screws in outdoor unit cover 2. Fix the full energy recovery exchanger on the cover of outdoor unit with the appended screws.
  • Page 95 HSU-09,12H03/U(DBPZXF) Installations 3.power block installation There are two terminal blocks F and G on the full energy recovery exchanger. F block is power phase string and controlling block, which connects with power string. G block is the ground-connecting block, which connects the zero string end in the terminal box.
  • Page 96 HSU-09,12H03/U(DBPZXF) Installations Installation of indoor unit As intallation of the fresh air system,we have two choices. One is installing the connecting pipe from back, another is from side,both of this two choices should finished the connection before fixing on the wall. Install the connecting pipe from back of the indoor TOP side...
  • Page 97 HSU-09,12H03/U(DBPZXF) 9. Removal Procedure Indoor unit Removal of Air Filter Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Features ornamental plate When the signal receiver catches a signal from the remote controller, it produces beep sound and...
  • Page 98 Removal Procedure HSU-09,12H03/U(DBPZXF) Step Procedure Points Lift an air filter upwards The right and left air filters slightly and then pull it are interchangeable. out downwards. Insert the air filters along grooves when installing. When installing, insert 2 hooks of the air filter completely.
  • Page 99 PZXF...
  • Page 100 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Release the both sides hooks. Pull the front grille out horizontally and remove When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught properly.
  • Page 102 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Loosen the 2 screws of the assembly (right). Remove the assembly. When assembling, insert the lower rack plate first. outside inside Domestic Air Conditioner...
  • Page 103 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points 2. Remove the lower rack plate. Loosen the 3 screws of the left assembly cover. Hold the assembly hori- When you demand small left zontally and release the parts like cogs and rollers, upper hook. order a set of assembly.

  • Page 104: Removal Of Horizontal Blade

    HSU-09,12H03/U(DBPZXF) Removal Procedure 9.4 Removal of Horizontal Blade 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. single. Release the center pivot.
  • Page 105 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points 2. Remove the swing motor. The swing motor for horizontal blade is on the left Pull out and remove the side. swing motor connector. Loosen the screw. Pull toward left and The axis has a keyhole. remove the swing motor.

  • Page 106: Removal Of Outlet Grille

    HSU-09,12H03/U(DBPZXF) Removal Procedure Removal of Outlet Grille 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.

  • Page 107: Removal Of Vertical Blades And Swing Motor

    HSU-09,12H03/U(DBPZXF) Removal Procedure 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 Remove the assembly of the outlet grille. 1. Remove the vertical blades.
  • Page 108 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Domestic Air Conditioner...

  • Page 109: Removal Of Electrical Box

    HSU-09,12H03/U(DBPZXF) Removal Procedure Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step Remove the front grille. Discharge the static electricity from your body 1.
  • Page 110 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Push the hook on the right side and remove the electrical box cover. Layout of the wiring Loosen the screw of the earth. Domestic Air Conditioner...
  • Page 111 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Disconnect the The harnesses for the connector for the swing horizontal swing motor and motors for horizontal the vertical swing motor are and vertical blades united. (S41). Release the harness from the hook. Disconnect the connector for the fan motor (S1).
  • Page 112 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Disconnect the connector for the reduction motor (front panel mechanism) (S49). Release the harness from the hook. Release the heat Pay attention so as not to exchanger thermistor. lose the clip. Release the thermistor When reassembling, hang lead wire from the hook.
  • Page 113 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Layout of the lead wire for the heat exchanger thermistor Loosen the screw of the electrical box. Tilt the front part of the electrical box to the right slightly and pull it out. Domestic Air Conditioner...

  • Page 114: Removal Of Heat Exchanger

    HSU-09,12H03/U(DBPZXF) Removal Procedure 9.8 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 You can detach the indoor unit without removing the assembly of the outlet grille. Loosen the screws Caution fixed to the installation...
  • Page 115 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Release the hooks Release the hook from the back side. Lift up the lower part of the fixture plate and remove it. Remove the heat exchanger Domestic Air Conditioner...

  • Page 116: Removal Of Fan Rotor And Fan Motor

    HSU-09,12H03/U(DBPZXF) Removal Procedure 9.9 Removal of Fan Rotor and Fan Motor 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 right side plate. Loosen the 2 screws. Remove the right side plate.
  • Page 117 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points 3. Remove the bearing. Lift up the right part of the fan rotor and motor, and slide them to the rightward to remove. Domestic Air Conditioner...
  • Page 118 HSU-09,12H03/U(DBPZXF) Removal Procedure Outdoor unit 9.10 Removal of Outdoor panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Features Be careful not to cut your finger by the fins of the heat exchanger.
  • Page 119 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points 2. Remove the panels. Loosen the service cover screw and remove the service cover. Loosen the 4 screw s and lift the top panel Domestic Air Conditioner...
  • Page 120 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Loosen the screws of the panel. Domestic Air Conditioner...
  • Page 121 HSU-09,12H03/U(DBPZXF) Removal Procedure Step Procedure Points Pull and remove the front panel. 3. Remove the outlet grille Unscrew the four marked screws Push the eight hooks on the inside back of front panel,then pull the outlet grille off. Domestic Air Conditioner...

  • Page 122: Removal Of Electrical Box

    HSU-09,12H03/R(DB) Removal Procedure 9.11 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 Undo the hooks. The front panel has 4 hooks. Pull and remove the The fan motor is united with front panel.
  • Page 123 HSU-09,12H03/R(DB) Removal Procedure 9.12 Removal of Fan Rotor and Fan 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 2 screws and lift the bell mouth to undo the hooks.
  • Page 124 HSU-09,12H03/R(DB) Removal Procedure Step Procedure Points Loosen the 2 screws and lift the bell mouth to undo the hooks. Remove the bell mouth. Loosen the fixing hooks Put the lead wire through the and release the lead back of the motor when wire.
  • Page 125 HSU-09,12H03/R(DB) Removal Procedure Step Procedure Points Loosen the 2 screws and lift the bell mouth to undo the hooks. Remove the bell mouth. Loosen the fixing hooks Put the lead wire through the and release the lead back of the motor when wire.
  • Page 126 HSU-09,12H03/R(DB) Removal Procedure Step Procedure Points Loosen the 2 screws and lift the bell mouth to undo the hooks. Remove the bell mouth. Loosen the fixing hooks Put the lead wire through the and release the lead back of the motor when wire.

  • Page 129: Wiring Diagrams

    HSU-09,12H03/U(DBPZXF) Appendix 10.2 Wiring Diagrams 10.2.1. INDOOR UNIT Domestic Air Conditioner...
  • Page 130 Appendix HSU-09,12H03/U(DBPZXF) 10.2.2 Outdoorunit I(S)PDU Domestic Air Conditioner...

  • Page 131: Circuit Diagrams

    HSU-09,12H03/U(DBPZXF) Appendix 10.3 Circuit Diagrams 10.3.1 INDOORUNIT POWER BCK-6-FE1901 LB2271 104/275V 220V-N 104/275V T3.15A 220V-L 250/AMP-63824-1 CN13 TLP421 4.7U/50V CN12 B7B-XH-A B5B-PH-K IC10 CN14 YJKG TLP421 YJKG B5B-XH 4.7U/50V B10B-PH-K B10B-PH-K PTB1/ATD1 PTB0/ATD0 R13 1K MC68HC908AB32 R14 10K R18 27 R15 4.7K 2SC2412 4.7K...
  • Page 132 HSU-09,12H03/U(DBPZXF) Appendix 10.3.2 OUTDOORUNIT SPDU module communicat ion 25V/220U +12V CL15F90HR 275V-25A B4B-XH-A 10K*4 220VA C-L (black ) C15 275-472 IC 5 1N4007 22K/2W KET6.3 IC 2 +12V 1000P S14K350 275-205 C16 275-472 1000P 22uF/250V 220K 220K 220K PM V TL P371 220VA C-N (white)
  • Page 133 U DBPZ...

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