SERVICE MANUAL
Contents
1. S AEP E SAY od MILA SEAT EN we LAS hi B S SSSSSSSSSSSSSSSN ZI ZZ 22277 ZZZ 5277 s ES 6 ALGA 47777 ZZ 7527 GL 2222 Wi Wij gt gt Y rZ 8 Y 4 Q NANO 00x99 III Domestic Air Conditioner Model HSU 22H03 R2 DB Haier o o e Edition 2005 11 16 Non Spare parts description in Failure The proportion exploded Spare parts number Pare p Qty of the spare Remark english rate view part stock owns Frontgate Tesuzmaraos 3 oai renee usu22u0am2p outdoor Jooragastazs usu22u0am2p outdoor 4 0010403995 outdoor 0010100355 sige paneer utter orne Handle _______ outdoor s 0010100124 Paneitos esuzamoamaos outdoor 0010100997 see paneignt __ 22 0010906797 ect boxassy outdoor vei 0010706999 Discharging tube ay HSU22H03F2DB Jooto707000 suctenuwe2. 0010707002 Discharging tube assy HSU22H03F2DB Se 0010709997 Service valve usuan outdoor 57 0010709999 Service valve ____ outdoor Que v s Service cover su zaHoarearoay EE v m Compressor Suzanosmaos outdoor jee outdoor 1 The failer rate and the proportion of the spare part stock are regarded as the reference of the stock for spare parts The first time should be stocked accroded with the proportion of the spare parts and it should be adjusted with the actual quantity 3 m 2 easy damaged The spare part which is often damaged and the customer must stock in the spare parts warehouse and should be marked with 3 possible damaged The spare part which is not often damaged like the easy damaged one and the customer may stock in the spare part warehouse accord with the actual case should be marked with 4 not need provided The spare part which is seldom damaged or the maintenance man could not maitmains The spare parts may be air freighted by the factory if they were damaged The customer nees not stock in the spare part warehouse should be marked wit 5 Above should be improved accord with the reply of the market half a year per time 6 The spare parts price on net is FOB Qingdao term 17 Domestic Air Conditioner
3. 690 12 M e e o Domestic Air Conditioner Model HSU 22H03 R2 DB Knock down drawings and part lists Domestic Air Conditioner KNOCK DOWN DRAWINGS FOR INDOORUNIT Model HSU 22H03 R2 DB 14 Domestic Air Conditioner HSU 22H03 R2 DB Spare parts description NS M in english rate part stock 1 0010807073 Indoorelecrtic box HSU 2203 R2 0B 1 oo 2 0010406037 jnsuzerosreog 1 ot 3 jooraosooz87 Riever Hsu 22H03R2DB 1 o2 4 100141431717 Motorcover Hsu 2203 R2 0B 1 o2 5 100143900059 Coicove Hsu 2208 R2 0B 1 oo 6 0010400633 transtormer Hsu 2203 R2 0B 1 ot 7 001A4000161 Terminal block Hsu 2203 R2 0B 1 o2 L wires Insuzomosreom 1 o C loo1a1231134 Front pane HSU 22H03 R2 DB 40 o01A1231135 Front grille HSU 22H03 R2 DB 41 jo01A0100276 Frameassy HSU 22H03 R2 DB 42 0041431494 Service cover HSU 22H03 R2 DB 13 001A3000088 Motorcover Hsu 22H03 R2 08 1 01 EN 1 05 16 E 8 49 2 1 00140300005 _ Bearing 20 0010707193 Heatexchanger HSU 22HO3 R2 DB 1 1 2 0010202227 HSU 22H03 R2 DB 1 22 0010101275 Mountingplate HSU 22H
4. Gas Side 12 7mm 3 8 3 way valve T ee ee Tube for R410A Vacuum R410A Open the handle at low in gaugemanifold operate vacuum pump If the scale moves of gause low ___ gt Open reach vacuum condition in a moment check O again Aa Vacuumize for over 15min And check the level gauge which should read 0 1 MPa 76 cm Hg at low pressure side After the completion of vacuumizing close the handle Lo in gaugemanifold and stop the operation of the vacuum pump Check the condition of the scale and hold it for 1 2min If the scale moves back in spite of tightening make flaring work again the return to the beginning of 4 4 N icm the valve rod for the 2 way valve to an angle of anticlockwise 90 degrees After 6 seconds close the 2 way valve and make the inspection of gas leakage In case of gas leakage tighten leakage stops then proceed 6 Detach the charge hose from the service port open 2 way valve and 3 way Turn the valve rod anticlockwise 7777 P C until hitting lightly D y To prevent the gas leakage turn the service port s ___ cap the valve rod s cap for 2 way valve and 3 way s a little more than the point where the torque increases suddenly After attaching the each caps check the gas leakage around the caps parts of pipe connection If Ian
5. Haier e o o o Domestic Air Conditioner SERVICE MANUAL Models HSU 22H03 R2 DB O Features Comfortable wide angle airflow health air purifying quiet operation energy efficient Serial Number Version 00 00 Edition 2005 11 16 Domestic Air Conditioner Model HSU 22H03 R2 DB Content 1 Description of product model coding and series introduction 3 2 Specifications 6 3 Curves of performance of compressor 8 4 Description net dimensions and functions of main components and accessorieS 10 5 Knock down drawings and part lists 13 6 Brief introduction to electrical control functions 18 T Wiring diagram _ 30 8 Circuit diagram 33 9 Abnormity diagnosis 36 10 Trouble shooting 38 11 Refrigerating cycle diagram 40 12 Noise level test chart and air velocity distribution 42 13 Installation manual 45 Ho o Domestic Air Conditioner Model HSU 22H03 R2 DB DESCRIPTION OF PRODU
6. 110022 ZEL 5 50 45 5 477 SAL RASE 16 TM cp 10MM PCH 112D2H G55 1 r pei OJE 55 1120M 4 IU a 1 FUL 275V 25A ad 275 472 275 472 a C S CNG H KETG3 CN B coven 0 KETS3 e 11 00 l ous 2 0000 00 Haw OIB 0000 BSP5 VH 35 Hesse Domestic Air Conditioner Model HSU 22H03 R2 DB ABNORMITY DIAGNOSIS Haier Domestic Air Conditioner Model HSU 22H03 R2 DB HSU 18H03 R2 DB Fault display code se ue 1 RR E ETICO Defrosting temperature sensor Poor contact of components or poor in short or broken current control board Compressor discharge temperature sensor in short or broken current Poor contact of components or poor control board Poor contact of components or poor control board ET 1 Strong interruption 2 Poor wiring or Poor communication control board 1 Short or excessive gas 2 High above 242v or low below 187v voltage 3 Jammed capillary tube Overheating discharge pipe compressor running fast with low current input 4 Faulty thermistor or control board 5 High ambient temperature 1 Excessive gas 2 Low voltage 3 Poor High AC current CT or control board 4 Faulty compressor high running current 1 Jammed compressor 2 Damaged High DC current power module 3 High voltage above 242v or low voltage belo
7. HSU 22H03 R2 DB Two Operation Mode 1 Half automatic Operation Mode Half automatic function is based on original automatic function a Cooling amp Heating Model Unit When system is on and operation mode switches to automatic the system will determine operation mode based on the difference of current set temperature and room temperature and will start operation as per mode determined In the following selective conditions Tr represents room temperature and Ts represents set temperature Upon initial entry into automatic mode operation mode is selected as per the following conditions Tr2Ts 3 Cooling mode is selected 30 Heating mode is selected When entering automatic mode the system can switch between cooling and heating mode corresponding to change of room temperature If the unit is currently in cooling mode compressor will shut down when temperature falls into compressor off temperature range 15 minutes after compressor is off compressor will perform temperature check at which time if Tr Ts 3 the system will enter heating mode otherwise it will remain in cooling mode If the unit is currently in heating mode compressor will shut down when temperature rises into compressor off temperature range 15 minutes after compressor is off compressor will perform temperature check at which time if Tr Ts 3 the system will enter cooling mode otherwise it will remain in heating mode 2 Cooling Mode Temperature Control
8. Temperature Control Range 16 30 Temperature Difference 1 Control Feature When Tr gt Ts 2 compressor operates at normal state and indoor fan operates at set speed e When Tr is between Ts 2 and Ts compressor operates at low frequency and fan is in weak wind mode 5 Tr Ts compressor and external fan will shut down and indoor fan will stop for 3 minutes and then enters weak wind mode t There is 1 set temperature difference in each mode Wind Speed Control Automatic When Tr gt Ts 5 high wind When Ts 30 lt Tr lt Ts 5 middle wind When Ts 2 lt Tr lt Ts 3 low wind When Ts lt Tr lt Ts 2 intermittent operation at weak wind Tr Ts fan will standby for 3 minutes and indoor fan is off except oxygen or fresh air feature is set Tr Ts fan will standby for 3 minutes and enter weak wind mode Compressor Control Compressor is not under the control of temperature sensor in the first 2 minutes after compressor starts and compressor can only restart at least 3 minutes after it shuts down There is no 3 minute protection at initial energization There is 3 minute protection if the unit has power outage compensation feature n case change of set temperature by remote control meets the condition of unit shut down or unit is powered off manually the operation is not restricted by the 2 minute non response feature and will shut down immediately 4 Heating Mode Temperature Con
9. gt Close Liquid Side D6 35mm 1 4 2 way valve D lt y lt Gas Side 12 7mm 3 8 3 way valve Service port If it does not stop gas leakage discharge whole refrigerants from the service port After flaring work again and vacuumize fill up prescribed refrigerant from the gas Liquid Side 6 35mm 1 4 y 2 way valve Gas Side 12 7mm 3 8 3 way valve HSU 22H03 R2 DB CAUTION 1 If the refrigerant of the air conditioner leaks it is necessary to discharge all the refrigerant Vacuumize first then charge the liguid refrigerant into air conditioner according to the amount marked on the name plate gt 2 Please do not let other cooling medium except specified one R410A or air enter into the cooling circulation system Otherwise there will be abnormal high pressure in the system to make it crack and lead to personal injuries 52 1 Power Source Installation e The power source must be exclusively used for air conditioner Over 10 eln 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 ePipe cutting is carried out with a pipe cutter and burs must be removed e After inserting the flare nut flaring work is carried out A Flare tool for R41
10. Fault Display and Treatment e In case outdoor unit faults the alarm indicator lamp will blink and blink frequency is 182 Time interval between blink cycles is 3s e Alarm indicator lamp is off when there is no fault Three are three ways of fault alarm It is ensured that fault alarm indicator lamp will blink for more than 2 minutes and 30s each time 10 Resumable Alarm fault code is sent to indoor unit 2 Resumable Alarm if there are consecutive non resumable fault codes in 10 minutes it need to restart by cut off the power 29 Wiring diagram 30 Haier Domestic Air Conditioner Model HSU 22H03 R2 DB 0010557242 WIRING DIAGRAM use T315A 250VAC CN1 1 CNS Receiver amp display Room temp sensor Exchanger heat emp sensor T DOOR THE UNIT WITHOUT THE HEALTH FUNCTION HAS NO R Red B Black WiWhite BL Blue YiYellow BR Brown Y GYellow Green 31 Haier Wiring diagram of outdoor unit Domestic Air Conditioner Model HSU 22H03 R2 DB JIDAR UN T WR 5 0010556830 CN3 CN4 BOARD y Tu p Fo PB R RO m ca AB AB THE PART CF DOITED 15 OAL AMB ESRC EN ns DEFROST TEMP SENSOR CHH gt zl COM TEM SENSOR HE AR PCB PEN Y YELLOW FUSE 5 8 BLACK T3 15 250vAc CN13 TERM NAL BLOK R RED CN17 B
11. Range 16 30 Temperature Difference 1 In the first 2 minutes after compressor starts it is not under the control of temperature sensor Control Feature When Tf air intake gt T set compressor external air fan is on indoor fan operates at set speed When Trij air intake lt Ts compressor external air fan is off indoor fan operates at set speed When Tr Ts the system will remain its original state Wind Speed Control temperature difference 10 Automatic When Tr gt Ts 3 high wind When Ts 1 xTr Ts 3 middle wind When Tr lt Ts 1 low wind Temperature sensor is off and air fan is in low wind speed Manual High middle low and automatic wind may be set as needed when unit is on The unit will act 5s after receiving remote control signal Compressor Control Compressor is not under the control of temperature sensor in the first 2 minutes after it starts and compressor can only restart at least 3 minutes after it shuts down There is no 3 minute protection at initial energization There are power cutoff compensation and 3 minute protection features 20 Haier Ma oe Domestic Air Conditioner Model HSU 22H03 R2 DB In case change of set temperature by remote control meets the condition of unit shut down or unit is powered off manually the operation is not restricted by the 2 minute non response feature and the unit will shut down immediately 3 Dehumidification Mode
12. Remote controller 1 Optional parts for piping Parts name Non adhesive tape Adhesive tape Mounting plate Saddle L S with screws Connecting electric cable for indoor and outdoor Drain hose Drain hose 4X50 Steel nail cement gt P4X25 i Screw Plastic cap Heating insulating material Piping hole cover Attention must be paid to the rising up of drain hose Arrangement of piping directions gt Cushion e supporting plate D Connecting cable Rear left gt Left Y lt Rear ne right Es i Right Below marks fr to the figure are the parts numbers gt lt The distance between the indoor unit and the floor should be more than 2m No 46 Domestic Air Conditioner Model HSU 22H03 R2 DB Floor fixing dimensions of the outdoor unit Unit mm HSU 22H03 R2 DB Fixing of outdoor unit e Fix the unit to concrete or block with bolts 10mm and nuts firmly and horizontally 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 e If vibration may affect the house fix the unit by attaching a vibration proof mat Selection of Installation Place Place robust not causing vibration where the body can be supported Place which is less affected by rain or
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14. covered with equivalent insulation material e The thickness of the pipe must be 0 8mm at least Gas pipe 12 7mm 1 2 12 7mm 1 2 Liquid pipe D 6 35mm 1 4 6 35mm t 4 47 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 2 Make sure once more the proper level of the plate by hanging a thread with a weight from the central top of the plate then fasten securely the plate with the attachment steel nail 3 Find the wall hole location A using a measuring tape When the mounting plate is fixed side bar and lintel e Fix to side bar and lintel a mounting bar Which is separately sold and then fasten the plate to the fixed mounting bar e Refer to the previous article When the mounting plate is first fixed for the position of wall hole 2 Making a Hole on the Wall and Fitting the Piping Hole Cover e Make a hole of 60 mm in diameter slightly descending to outside the wall e Install piping hole cover and seal it off with putty after installation Outdoor side Wall hole Thickness of wall 860mm Section of wall hole Piping hole pipe Indoor unit 3 Installation of the Indoor Unit Drawing of
15. direct sunlight and is sufficiently sufficiently ventilated Place not affected by heat or steam generated in the vicinity where e Place possible to bear the unit where vibration and noise are inlet and outlet of the unit are not disturbed not increased e Place possible to drain easily where piping can be connected with the e Place where discharged wind and noise do not cause a outdoor unit nuisance to the neighbors Place where cold air can be spread in a room entirely e Place where a distance marked lt gt 15 available as illustrated Place nearby a power receptacle with enough space around Refer in the above figure to drawings Place where the distance of more than Im from televisions radios wireless apparatuses and fluorescent lamps can be left e In the case of fixing the remote controller on a wall place where the indoor unit can receive signals when the fluorescent lamps in the room are lightened Power Source Before inserting power plug into receptacle check the voltage without fail The power source is the same as the corresponding name plate O Install an exclusive branch circuit of the power receptacle shall be set up in a distance where the power cable can be reached Do not extend the cable by cutting it Selection of pipe e To this unit both liquid and gas pipes shall be insulated as they become low temperature in operation For 18 For 22 e Use optional parts for piping set or pipes
16. outdoor electric cable and then pull out the connected to the heat insulation of connecting part specially Fixing the indoor unit body e Hang surely the unit body onto the upper notches of the mounting plate Move the body from side to side to verify its secure fixing In order to fix the body onto the mounting plate hold up the body aslant from the underside then put it down y perpendicularly 49 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 Insert from outside the room cable into left side of the wall hole in which DOM the pipe has already existed a 2 Pull out the cable on the front side and connect the cable making a loop When connecting the cable before installing the indoor unit e Insert the cable from the back side of the unit then pull it out on the front side e Loosen the screws and insert the cable ends fully into terminal block then tighten the screws e Pull the cable slightly to make sure the cables have been properly inserted and tightened e After the cable connection never fail to fasten the connected cable with the wiring cover Note When connecting the cable confirm the terminal number of indoor and outdoor units carefully If w
17. pipe Rear piping e Draw pipes and the drain hose then fasten them with the adhesive tape Left Left rear piping e In case of left side piping cut away with a nipper the lid for left piping e In case of left rear piping bend the pipes according to the piping direction to the mark of hole for left rear piping which is marked on heat insulation materials 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 3 Coat the flaring seal face with refrigerant oil and connect pipes Cover the connection part with heat insulation materials closely and make sure fixing with adhesive tape 0000000 a Heat insulation material Piping Pipe supporting plate ah 0000 Lid for right piping Lid for left piping Drain hose Indoor outdoor Lid for under piping pipe Z electric cable Fix with adhesive tape e Indoor outdoor electric cable and drain hose must be bound with refrigerant piping by protecting tape Other direction piping Cut away with a nipper the lid for piping according to the piping direction and then bend the pipe according to the position of wall hole When bending be careful not to crash pipes Connect beforehand the indoor
18. signal Timed on may be set and operation will start when unit receives time on signal Timed on off may be set which will be performed as per set sequence 8 Sleep Operation 8 1 In cooling dehumidification mode set temperature will rise by 1 after one hour of operation and it will rise another 1 after another hour The unit will shut down after operation for another 6 hours 8 2 In heating mode set temperature will fall 2 after one hour and it will fall another 2 for another hour and it will rise 1 after another 3 hours and the unit will shut down operation after another 3 hours 8 3 If wind speed of indoor fan is high before setting sleep mode then it will switch to middle wind after sleep mode is set If wind speed of indoor fan is middle before setting it will switch to low level after setting If wind speed of indoor fan is low before setting then it will remain unchanged after setting 9 Trial Operation Wind speed is high and trial operation will end in 30 mins and unit will shut down In trial operation the unit will exit trial operation mode when receives remote control signal and low load protection will not be activated 10 EEPROM Control When outdoor unit is supplied with power if EEPORM parameter is inconsistent with checksum EEPROM faults When indoor unit receives EEPROM fault signal from outdoor unit it will display outdoor unit EEPROM fault At this time control and emergency operation are not accep
19. 03 R2 DB 23 001 1431368 piping support HSU 22H03 R2 DB 24 o01A1431088 Pipingclemp HSU 22H09R2D8 1 02 25 0010403894 Remotecontoler _ HSU 22H03 R2 DB 26 001A1434039 Drain horse HSU 22H03 R2 0B 1 27 jooAi231140 rip msU 22H03 R2 DB 1 The failer rate and the proportion of the spare part stock are regarded as the reference of the stock for spare parts The first time should be stocked accroded with the proportion of the spare parts and it should be adjusted with the actual quantity 3 months later 1 1 4 5 7 10 11 12 13 14 15 16 17 18 19 20 22 23 24 25 26 27 2 easy damaged The spare part which is often damaged and the customer must stock in the spare parts warehouse and should be marked with 3 possible damaged The spare part which is not often damaged like the easy damaged one and the customer may stock in the spare part warehouse accord with the actual case should be marked with 4 not need provided The spare part which is seldom damaged or the maintenance man could not maitmains The spare parts may be air freighted by the factory if they were damaged The customer nees not stock in the spare part warehouse should be marked with x 5 Above should be improved accord with the reply of the market half a year per time 6 The spare parts price on net is FOB Qingdao term 15 Model HSU 22H03 R2 DB Domestic Air Conditioner
20. 0A Conventional flare tool Flare tooling die Clutch type clutch type Rigid type Wing nut type Imperial type 1 Cut pipe 2 Remove burs y 3 Insert the flare nut R de Correct Incorrect gt BiG B E E Y Lean Damage of flareCrack Partial Too outside 3 Drainage Please install the drain hose so as to be downward slope without fail Please don t do the drainage as shown below d Z 7 A It becomes high The end is immersed It waves The gap with the ground There is the bad smell midway in water is too small from a ditch e Please pour water in the drain pan of the indoor unit and confirm that drainage is carried out surely to outdoor e In case that the attached drain hose is in a room please apply heat insulation to it without fail Check for Installation and Test Run Please kindly explain to our customers how to operate through the instruction manual Check Items for Test Run n Put check mark v in boxes O Gas leak from pipe connecting Is drainage securely carried out O Is the lamp normally lighting O Heat insulation of pipe connecting O Is the earth line securely Are cooling and heating when LI Are the connecting wirings of connected in heat pump performed normally indoor and outdoor firmly inserted O Is the indoor unit securely fixed O Is the operation of room temperature to the terminal block Is power source volt
21. 1 Haier Domestic Air Conditioner Model HSU 22H03 R2 DB feature In case change of set temperature by remote control meets the condition of unit shut down or unit is powered off manually the operation is not restricted by the 2 minute non response feature and will shut down immediately Anti Current Surge External fan starts 2s after compressor is on Timed Power On amp Off Feature Sleep Control Feature Four way Valve Control Four way valve is on 10s prior to compressor startup and off 2 minutes and 30 seconds after compressor shutdown Anti Cold Wind Operation 10 Compressor operation or compressor operation after defrosting When indoor heat exchanger temperature is below 23 indoor fan is off when indoor heat exchanger temperature is above 23 fan operates in weak wind mode 20 If after 4 minutes coil temperature can not exceed 38 fan will operate at set speed 30 If coil temperature exceed 38 fan will operate at set speed O 4D If coil temperature falls below 380 when compressor is running fan will still operate at set speed Residual Heat Blow Temperature sensor is off If coil temperature is above 23 fan will enter weak wind mode if coil temperature below 23 indoor fan will stop Remote Control Shut Down Deflector will close after set wind blows for 1 minute Automatic Temperature Compensation in Heating Mode 1 Condition Compressor shutdown time is less
22. CT MODEL CODING 4 SERIES INTRODUCTION Haier Domestic Air Conditioner Model HSU 22H03 R2 DB Introductory Remarks Description of coding rules of unit model Coding rules and descriptions are as follows 219 eHe 9 0 89 80 169 69 Inverter type DB B Refrigerant type R1 R407C R2 R410A Applicable voltage 3 220 230V 4 240V Applicable freguency 0 50HZ 1 60HZ Developing seguence A B C D L C cooling only Function code anne pump E electric aided heating Nominal cooling capacity BTU h with the first two numbers based on thousand unit The structure code of indoor amp outdoor unit S wall mounted W window type P cabinet type H Abbreviation of Haier Examples HSU 22H03 R2 DB represents wall mounted split type heat pump DC inverter air conditioner The cooling capacity is 22000BTU h and the power supply is 230V 50Hz and R2 means the refrigerant is R410A Haier Domestic Air Conditioner Model HSU 22H03 R2 DB Description of product model coding and series introduction Standard Situation Conditions outdoor air status na wec Norminal electrical heating C Series brief introduction 1 comfortable wide angle airflow The vertical dual flap and horizontal wide angle louvers ensure the cool warm air reaches every corner of the room 2 Health air purifying An air purifying filter with deodorizing and disinfecting functions keep
23. H03 R2 DB Noise level test chart and air velocity distribution Noise level test chart 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 43 Domestic Air Conditioner Model HSU 22H03 R2 DB Noise level test chart and air velocity distribution Air velocity distribution Air velocity distribution unit m s Fig 1 top view flow control panel horizal lourer center unit m s Fig 2 top view flow control panel horizal lourer right and left unit m s Fig 3 3 top view 15 _ flow control panel horizal 100505 lourer center 7 unitm s Fig 4 Condition top view Fan speed high Operation mode fan flow control panel vertical lourer center Voltage 230V 50Hz 44 Domestic Air Conditioner Model HSU 22H03 R2 DB Installation manual 45 Domestic Air Conditioner Model HSU 22H03 R2 DB Installation Manual of Room Air Conditioner 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 8 Knife 11 Measuring tape Drawing for the installation of indoor and outdoor units Accessory parts Number The models adopt HFC free refrigerant R410A ol articles Accessory parts
24. Model HSU 22H03 R2 DB Brief introduction to electrical control functions Haier N e o o Domestic Air Conditioner Model HSU 22H03 R2 DB One Basic Control 1 Function Display Lights up when unit starts Lights up when Timer operation is selectedn 2 Temperature Adjustment Function In temperature adjustment function operation frequency of outdoor unit is determined based on indoor temperature and set temperature During wind speed adjustment indoor fan PI D is controlled as per the needs of temperature adjustment 3 Compressor Off Compressor is off when indoor temperature is 1 above set temperature heating mode 1 below set temperature cooling mode 4 Compressor On Compressor is on when indoor temperature is 0 67 below set temperature heating mode 0 67 above set temperature cooling mode 5 Remote Control Operation In remote control if temperature changes PI operation will start in 2s If change of set temperature is towards compressor off compressor will shut down when it falls into compressor off temperature range 6 Indoor Fan Rotate Speed Mode Wind Speed Rotate Speed Weak 650 Low 950 Heating Middle 1050 High 1150 Super High Weak 650 Low 950 Cooling Middle 1050 High 1150 Super High Low 950 Ventilation Middle 1050 High 1150 Coolin 1350 pee 1350 19 Haier Dos so Domestic Air Conditioner Model
25. OU E BL BLUE W VATE Y G YELLON GREEN VARN NG CAUTI CN DON T TOUCH TCR EVEN AFTER PLUG DANGER ELECTR SHOCK The capaci tor retains hi gh vol tage even after the pl ug off For your safety be sure to wit at least 5 mnutes after plug off and use a tester to confirm the vol tage between connect or AB and OM is less than 10V before start servi ci ng 32 Hee eee Domestic Air Conditioner Model HSU 22H03 R2 DB CIRCUIT DIAGRAM 33 Haier HSU 22H03 R2 DB Model Domestic Air Conditioner 9 5 r z 1 ONVAHONIA sdumes pur spuoumooqr y E jo PAS v007 99d 8 ona 8 quan ang mL v v ASE 410001 LOOPNI K OVASLUAMI 106 LQOENI A 0 Noo E EU 1 VSTEL As TOV 182 a FIND 0554715 P 8 8 zii 1 b cag XT ib TT TT T AU mg MA HER nc RIAM is gt zj 1510 64 br ZINO Gmu 51108007164 E TRENT TOS Ona Er K AUN oz NMa osa
26. The value is represented by A for 3s compressor will shutdown and alarm After 3 minutes compressor will restart In the event restart occurs 3 times in 10 minutes compressor will stop and alarm to determine the fault Compressor can only continue operation when power is cut off Overcurrent Frequency Drop Protection When current is larger than 12 compressor frequency will drop at a speed of1HZ s When current is lower than 12A and higher than11A frequency drop will stop and frequency will be increased at a speed of 1HZ 10s When current is lower than 9A target operation frequency will be resumed 2 5 Indoor Heat Exchanger Anti freeze Protection e Anti freeze during cooling 110 90 TU 6 50 When Tel 50 D compressor frequency will drop at a speed of 1HZ 10s When Tc starts to rise and 6 Tc 7 compressor frequency will remain unchanged When 70 11 frequency will rise at a speed of 1HZ 10s If lt 00 for 2 consecutive minutes compressor will shutdown and outdoor fault lamp blinks Fault will not be reported to indoor unit When compressor shuts down for more than minutes and when TC gt 7 compressor will restart 2 6 Outdoor Temperature Limit Cooling When outdoor temperature is lower than 150 cooling operation will start compressor freguency is limited to less than 50 HZ outdoor wind speed is forced at level 1 Heating When outdoor temperature is higher than 20 heating operation w
27. W 6000 720 6300 W Heating capacity W 6200W 1080 7750 W warm side Mpa cool side Mpa Cooling coefficient W W 3 03 Heating coefficient W W 3 01 Cooling power input W 1980 310 2450 W Heating power input W 2060W 430 2600 W Moiture removal m h 2 3 X10 Frequency range Hz 50 Operating voltage range V 230 Refrigerant type R410A Operating temp range C 7 43 Air sending angle 60 indoor unit Cross flow fan Variation of temp adjust C 1 Fan type outdoor unit Axial flow fan Climate type T1 Class of electric shock Indoor unit noise 44 39 37 Outdoor unit noise 56 cooling cooling Indoor unit noise Outdoor unit noise heating 44 39 37 heating 56 Net dimensions mm 938x 182x 265 Net dimensions mm 810 288 680 indoor unit outdoor unit Packaging dimensions mm Packaging dimensions mm indoor unit 727 outdoor unit 915x 325x 699 Net gross weight kg Net gross weight kg indoor unit 11 14 outdoor unit ue Max mounting height indoor unit 8 5 Piling layers difference m outdoor unit 4 Refrigerant charge g 1900 Current entering side indoor R410A indoor outdoor Freguency of filter cleaning Once 2 weeks Max refrigerant charge g 15 Compressor model C 6RVN93HON Compressor manufacturer HUARUN Compressor oil charge cc 350 poe Compressor protector type Internal Maxi length of connect
28. age abided regulator normal O Is the connecting wiring of indoor by the code and outdoor firmly fixed O Is there any noise 53 Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com
29. e changes e Should there be a big noise from air flow in unit operation air filter may be too dirty e This is because the system circulates smells Smelis are generated from the interior air such as the smell of furniture cigarettes Mist or steam are blown out During COOL or DRY operation indoor unit may blow out mist This is due to the sudden cooling of indoor air Is power plug inserted Multiple e Is there a power failure check e Is fuse blown out e Is the air filter dirty Normally it should be cleaned every 15 days e Are there any obstacles before intel and outlet e Is temperature set correctly e Are there some doors or windows left open e Is there any direct sunlight through the window during the cooling operation Use curtain e Are there too much heat sources or too many people in the room during cooling operation Application temp range of air conditioner 7 C 43 39 Haier Domestic Air Conditioner Model HSU 22H03 R2 DB REFRIGERATING CYCLE DIAGRAM Haier Refrigerating cycle diagram Domestic Air Conditioner Model HSU 22H03 R2 DB outdoor unit heat exchanger indoor unit heat exchanger stop valve gt stop valve filter cooling operation heating operation 41 Domestic Air Conditioner Model HSU 22H03 R2 DB Noise level test chart and air velocity distribution 42 Haier sous Domestic Air Conditioner Model HSU 22
30. ed yet air discharge sensor fault must be alarmed 4 minutes after compressor starts TOU OU Abnormal Shutdown 117 rapid frequency drop 1HZ s 109 slow frequency drop 1HZ 10s 98 invariable frequency 93 frequency rise 1HZ 10s 90 frequency rise 1HZ 1s When TD gt 117 for 20s continuously Jair discharge overheat protection will be activated and fault will be reported to indoor unit In other protection features there is no continuous allowance 2 3 Indoor unit TC high temperature prevention and control in heating mode Indoor heat exchanger sensor will check temperature of indoor heat exchanger if the temperature is higher than 55 compressor rotate speed will be reduced to activate indoor heat exchanger high temperature protection When temperature of indoor heat exchanger falls below 48 normal control will be resumed 65 P Slow Drop 55 Q Maintain 52 48 R Slow Rise P Drop at the speed of 1Hz 10s 27 Haier Hes eee Domestic Air Conditioner Model HSU 22H03 R2 DB Q Maintain the previous instruction cycle R Rise at the speed of 1Hz 10s If TC gt 65 and continues for 5s the unit will shutdown outdoor fault indicator lamp will blink and fault will not be reported to indoor unit When compressor shutdown exceeds 3 minutes and TC 48 compressor will restart 2 4 Overcurrent Prevention and Control During startup of compressor if current is larger than 13A
31. humidification Low Wind Low Wind High Wind Heating High Wind Low Wind Low Wind Wind Speed Adjustment Table based on ambient temperature and compressor frequency after compressor runs for 3 minutes Cooling Compressor Frequency F lt 25Hz 25Hz F 45Hz 45Hz F Tao Above 28 Low Wind High Wind High Wind Below 28 Low Wind Low Wind High Wind Heating Compressor Frequency F 25Hz 25HzsF 45Hz 45Hzsf 25 Haier Hess ee Domestic Air Conditioner Model HSU 22H03 R2 DB Tao Above 15 Low Wind Low Wind High Wind Below 15 Low Wind High Wind High Wind 1 3 Four way Valve Control e Defrosting Four way Valve Control please see defrosting process for details Time sequence of the defrosting operation is as follows Compressor Outdoors fan motor Four way valve 60x9Max e Four way Valve Work Status in Other Modes In heating mode four way valve 1 compressor is off is switched to non heating mode four way valve ensures that it is off at least 2 minutes after compressor shuts down 1 5 Outdoor Defrosting Control A Defrosting Mode Entry Conditions The unit will enter defrosting mode when compressor starts up and operates for 10 minutes continuously in heating mode and accumulated running time exceeds 45 minutes Upon completion of defrosting or when switched to cooling mode compressor accumulated operation time will be cleared and when 2 minu
32. ill start compressor freguency is limited to less than 50 HZ outdoor wind speed is forced at level 1 2 7 Rated Operation 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 2 8 Special Features 1 Power Operation When receiving indoor power signal the unit will operate as per freguency set by EEPROM fan rotate speed is determined by ambient temperature and freguency Power operation will stop when indoor power signal is cancelled 2 Silence Operation When receiving indoor silence signal the unit will operate as per freguency set by EEPROM fan rotate speed is determined by ambient temperature and freguency Power operation will stop when indoor silence signal is cancelled 28 Haier Domestic Air Conditioner Model HSU 22H03 R2 DB 3 Forced Cooling When receiving indoor forced cooling signal cooling operation will start in a frequency signaled by indoor unit Only air discharge temperature and overcurrent protection features are effective and other protection features are invalid 4 Rated Middle and Minimum Capacity Operation When receiving indoor rated middle and minimum capacity operation signal outdoor unit will operate as per wind speed and frequency set by EEPROM and all the protection features are effective Three
33. ing 15 drain hose length mm 2000 pipe m diametre mm 16 Cap tube type muffle TP Y Type of tube of evaporator Internal thread model and condenser Fan speed H M L r min cool 1350 1250 1150 Size of tube of evaporator 9635 9 12 7 indoor unit heat 1350 1250 1150 and condenser mm Fan speed r min Appearance features of indoor outdoor unit 760 unit plastic two way 1 4 Appearance features of outdoor Cut off vavle inch three way 1 2 unit metal Max operating pressure at Max operating pressure at 415 415 Beseee Domestic Air Conditioner Model HSU 22H03 R2 DB Curves of performance of compressor Domestic Air Conditioner Model HSU 22H03 R2 DB Curves of cooling capacity and heating capacity as a function of outdoor temperature 7 C 43 C Cooling Indoor 130 DB WB C 120 29 2 15 110 25 17 100 21 14 90 80 70 Copocity 9 130 120 110 Indoor 100 DB WB C 90 80 70 60 Input 96 Heating Outdoor DB C Indoor 150 DB C Capacity 5 130 120 110 100 90 80 70 60 Input me me gt 5 6 0 2 5 3 10 7 5 15 12 20 25 30 35 Outdoor DB WB C Domestic Air Conditioner Model HSU 22H03 R2 DB Description dimensions and functions of main components and accessories Haier Domestic Air Conditioner Indoor uni
34. iring is not correct proper operation can not be carried out and will cause defect 1 If the supply cord is damaged it must be replaced by the manufacturer or its service agent or a similar gualified person The type of connecting wire is HOSRN F or HO7RN F 2 If the fuse on PC board is broken please change it with the type of T 3 15A 250V 3 The wiring method should be in line with the local wiring standard 4 After installation the power plug should be easily reached YEL GRN Indoor unit Outdoor unit HSU 22H03 R2 DB 50 Outdoor unit 1 Installation of Outdoor Unit Install according to Drawing for the installation of indoor and outdoor units 2 Connection of pipes e 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 e Connecting the pipe of gas side first makes working easier e The connection pipe is specialized for R410A e The max vertical distance between the indoor unit and the outdoor unit is 5 m Half union Flare nut Forced fastening without careful centering may damage the UD is threads and cause a leakage of gas J Pipe Diameter D torque Liquid side 6 35mm 1 4 18N m Gas side 9 52mm 3 8 42N m Spanner Torque wrench Gas side 12 7mm 1 2 55N m Be ca
35. ng and rated data signal is in communication c Exit Conditions The unit will exit rated operation when receiving remote control or press key signal and it will enter the mode set by remote control and press key 3 Emergency Switch When unit is in shutdown condition press emergency switch down for less than 5s the unit will start emergency operation When unit is in shutdown condition press emergency switch down for more than 5s but less than 10s the unit will start trial operation When shutdown press emergency switch down for more than 10s but less than 15s it will display the previous fault When unit is in shutdown condition press emergency switch down the panel will display automatic operation When fault occurs press emergency switch and the unit will shut down and fault is cleared During fault display press emergency switch will end fault display mode 24 Haier Ho Domestic Air Conditioner Model HSU 22H03 R2 DB One System Major Function Sensor Code Definition Tai Indoor Ambient Temperature Tao Outdoor Ambient Temperature Tc1 Indoor Coil Td Air Discharge Te Outdoor Coil Ts Air Intake 1 1 Outdoor Unit Operation Frequency and Control 1 1 1 Compressor Operation Frequency Control e Compressor Operation Frequency Range Outdoor Temperature o 00 Heating 17RPM 110RPM 17RPM 120RPM Cooling 20RPM 110RPM 20RPM 120RPM Defrosting 88rpm 1 1 2 Compressor Startup Rega
36. rdless of target freguency of indoor unit each time when compressor is from off to on it must maintain 60Hz and 90Hz for one minute respectively Freguency will be immediately decreased under the condition that outdoor unit air discharge temperature overheating protection is activated or overcurrent of compressor then the compressor will operate towards target freguency This process does not exist in normal operation of unit 1 1 3 Heating When completing compressor startup operation it will operate as per frequency of indoor unit After 2 minutes compressor operation frequency will be compensated as per relevant conditions 1 1 4 Cooling amp Dehumidification When completing compressor startup operation it will operate as per frequency of indoor unit After 2 minutes compressor operation frequency will be compensated as per relevant conditions 1 1 5 Compressor Frequency Increase Decrease Speed Rapid Frequency Increase Decrease Speed 1 1HZ s Slow Frequency Increase Decrease Speed 2 1HZ 10s 1 2 Outdoor Fan Control 1 2 1 Wind speed control when AC fan is adopted for outdoor unit e Whether to use AC fan DC fan is determined by EEPROM Residual Heat Blow After compressor shuts down in cooling mode fan will run for 30s at low speed before stop e Wind Speed Adjustment Table when compressor starts up for 3 minutes Ambient Temperature 10 10 25 25 Cooling amp De
37. reful that matters such as wastes of sands etc shall not enter the pipe The standard pipe length is 5m If it is over 5m the function of the unit will be affected If the pipe has to be lengthened the refrigerant should be charged according to 20 g m But the charge of refrigerant must be conducted by professional air conditioner engineer Before adding additional refrigerant perform air purging from the refrigerant pipes and indoor unit using a vacuum pump then charge additional refrigerant 3 Connection e Use the same method on indoor unit Loosen e If wiring is not correct proper operation can the screws on terminal block and insert the not be carried out and controller may be plugs fully into terminal block then tighten the damaged screws e Fix the cable with a clamp e Insert the cable according to terminal number in the same manner as the indoor unit 4 Attaching Drain Elbow x PAE e If the drain elbow is used please attach it as IL figure Drain hose Note Only for heat pump unit Drain elbow Se 51 oor unit 5 Purging Method To use vacuum pump Detach the service port s cap of 3 way valve the valve rod s cap for 2 way valve and 3 way s connect the service port into the projection of charge hose L gt low for gaugemanifold Then connect the projection of charge hose center for gaugemanifold into Liguid Side 6 35mm 1 4 2 way valve 2 way valve
38. s the air clean and users healthy 3 Quiet operation Fan With Random pitched Blades Random pitched blades help reduce operating noise while maintaining a high airflow rate 4 Energy efficient The design of inner grooved copper tube greatly increases the refrigerant contact area and the efficiency of cooling heating functions 5 Convenience Auto restart and washable panel The grille can be removed and washed easily when necessary With Auto restart function the unit will automatically return to the operating settings in use before the power failure when power is restored 6 Wide variety of functions 24 Hour Timer 24 hour timer allows users to select the exact time they would like the air conditioner to turn on and to turn off Timers on previous models operation are based on the number of hours of desired operation 7 Night set models When the air conditioner is operating on the timer off circuit The preset room temperature gradually rises going down in heating before the unit stops as shown below Users can sleep comfortably without sudden change in temperature 8 Program dry This function automatically reduces the level of humidity while maintaining the preset indoor temperature Domestic Air Conditioner Specifications Model HSU 22H03 R2 DB Specifications Model HSU 22H03 R2 DB Domestic Air Conditioner Domestic Air Conditione Model HSU 22H03 R2 DB Model HSU 22H03 R2 DB Cooling capacity
39. t Inlet grille Air filter Timer mode indicator Lights up when Timer operation is selected Vertical flap Power indicator Use remote controller to adjust up and down air flow Don t adjust it manually Lights up when unit starts Model Test running switch manual Used only for test running in cooling when room temp is below 16 C V Don t use it in normal operation P Emergency switch manual Used when remote controller is lost or L defective Unit will run temporarily 5 z b Remote signal receiver A beeping sound is generated when a signal from remote controller is C received J Operation mode Lights up during compressor running For model HSU 22H03 R2 DB Outdoor unit 11 HSU 22HV03 R2 DB Flaier Domestic Air Conditioner Model HSU 22H03 R2 DB NET DIMENSIONS Indoor unit for HSU 22H03 R2 DB 938 lt 182 gt 5 f i Lo A C gt v RA J D NET DIMENSIONS outdoor unit for HSU 22H03 R2 DB
40. ted and the fault can only be relieved by power off Three Special Function 1 Power off Compensation a Entry Condition Press sleep key 10 times 7s and buzzer sounds 4 times and the current status is saved into indoor unit EEPROM upon the entry b On entering power off compensation operation indoor unit operates as per the following procedures The unit operates as per condition set by remote control and emergency setting and current status is saved into indoor unit EEPROM c Exit Condition Press sleep key 10 times 7 and buzzer sounds 2 times 2 Rated Operation Rated Cooling a Entry Condition The unit will enter rated cooling upon receipt of remote control signal b Indoor unit will operate as per the following procedures when entering remote control cooling mode Air fan will enter manual high wind or rated wind operation panel will display cooling and rated data signal is in communication c Exit Conditions The unit will exit rated operation when receiving remote control or press key signal and it will enter the mode set by remote control and press key 23 Haier Hes see Domestic Air Conditioner Model HSU 22H03 R2 DB Rated Heating a Entry Condition The unit will enter rated heating upon receipt of remote control signal b Indoor unit will operate as per the following procedures when entering rated heating mode Air fan will enter manual high wind or rated wind operation panel will display heati
41. tering defrosting it must guarantee that compressor will operate for a minimum of 2 minutes in defrosting mode before exit D Defrosting Exit Condition 26 Haier Domestic Conditioner Model HSU 22H03 R2 DB When one of the following conditions is met defrosting operation will be switched to heating operation 10 Temperature of outdoor heat exchanger exceeds 7 for 80s continuously 20 Temperature of outdoor heat exchanger exceeds 12 for 5s continuously 30 Defrosting operation continues for 9 minutes E When defrosting exit conditions are met the unit will operate as follows Compressor stops and external fan starts 50s later four way valve will be on 60s later compressor will operate as per startup process 1 6 PTC Output Control e When outdoor unit is energized PTC output value is 0 10s later output value is 1 e When compressor stops for 10 minutes continuously PTC output value is 0 On receiving compressor startup instruction initial PTC output is 1 and compressor startup will be performed 5s later Two System Protection Function 2 1 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 2 2 TD High Temperature Protection As long as unit is on the TD air discharge overheat protection feature will be activat
42. tes continuous checking by defrosting sensor TE check frosting condition of outdoor unit heat exchanger and outdoor ambient temperature sensor TA meets the following conditions TESCxTA a Among which C TA 00 C 0 8 TA20 C 0 6 For area prone to frost the value is set at 6 when unit leaves the factory Defrosting entry temperature control 15 lt a lt 5 B Defrosting Time Interval e When data calculated by CxTA afalls into the range of 15 lt a time interval between two defrosting cycles is 45 minutes e When data calculated by CxTA afalls into the range of CxTA a 15 time interval between two defrosting cycles is 65 minutes e Defrosting Operation e When defrosting begins compressor will stop for one minute external fan is running and 50s later four way valve will be off When compressor starts external fan will be off compressor will run at 60HZ for 60 then move on to target frequency of 88HZ e During defrosting compressor current and air discharge overheat protection features are effective During defrosting if compressor shuts down due to activation of protection feature or due to malfunction it will resume after 3 minutes In the unit is still within defrosting cycle it will resume defrosting and startup of compressor will be based on the rule for defrosting startup The unit will exit defrosting mode and handle fault in the event of 3 consecutive restart failures e On en
43. than 5 minutes 2 Operation Rule 10 Ts Trc 5 Tre Tt The instant when compressor starts up 2 Trc Tt The instant when compressor starts up lt 20 Note The above two conditions are not applicable to initial start up Press temperature key on remote control and resume Ts Trc 5 operation Press temperature key on remote control it will operate based on automatic compensation set value AU If Trc Tt before compressor is on lt O it will operate as per Ts Trc 5 3 If ventilation door is in healthy up flow position set temperature in heating mode will be increased by 2 on its original basis 5 Defrosting Mode Air fan will engage in anti cold wind operation based on the data sent by heat exchanger temperature sensor Sensor fault will not be checked within the first 2 minutes after exiting defrosting mode 6 Negative lon Health Feature Control When receiving remote control signal if fan is operating negative ion generator will start working to discharge negative ion If air fan is off negative ion generator will be off When negative ion generator is off if health feature is set then negative ion generator will turn on when fan start operation again 7 Timed Operation 22 Haier Hes eee Domestic Air Conditioner Model HSU 22H03 R2 DB Time count starts based on time difference between timing clock and current clock Time off may be set and operation will stop when unit receives time off
44. trol Range 16 30 Temperature Difference 1 Control Feature When for the first time Tr lt Ts compressor four way valve and external fan are turned on and indoor fan operates at anti cold wind mode 4 temperature compensation will automatically be added on entering heating mode When Tr gt Ts 5 external fan of compressor is off and indoor fan will operate in residual heat blow mode When Tr Ts 5 compressor four way valve and external fan are turned on and indoor fan operates at anti cold wind mode Indoor Fan Control Manual Control High middle low and automatic wind may be set as needed Automatic Control when Tr gt Ts high wind when Ts gt Tr gt Ts 2 middle wind when Tr Ts 2 low wind There is no delay when wind speed rise from low to high speed while there is a 3 minute delay when wind speed fall from high to low speed Fan will operates in high wind for 3 minutes The unit can restart at least 3 minutes after shut down There is no 3 minute protection at initial energization There is 3 minute protection if the unit has power outage compensation feature Compressor Control Compressor Control Compressor is not under the control of temperature sensor in the first 2 minutes after compressor starts and compressor can only restart at least 3 minutes after it shuts down There is no 3 minute protection at initial energization There is 3 minute protection if the unit has power outage compensation 2
45. w 187v 1 Damaged control board 2 Short gas re poem CO fom Sada led vao switch 1 Jammed compressor 2 Damaged power module 3 Irregular heat emitting or highirestrictions gum 4 High voltage above 242v or low voltage below 187v The indoor motor finds no motor signal in a 10 sencond period after increasing the voltage Running for 30 senconds Indoor motor warning BP AC after cutting off the output voltage for the indoor motor AC gives no motor signal but warning under new voltage for the DP OF K SERIES motor Both he power light and running light blink twice at 1 Hz s and then the power light timing light and running light blink once The sames cycle goes on 37 Besson Domestic Air Conditioner Model HSU 22H03 R2 DB TROUBLE SHOOTING The system does not restart e When unit is stopped it won t restart immediately immediately until 3 minutes have elasped to protect system e When the electric plug is pulled out and reinserted the protection circuit will work for 3 minutes to protect the air conditioner e During unit operation or at stop a swishing or gurgling noise may be heard At first 2 3 minutes after unit start this noise 1 more noticeable This noise is generated by refrigerant flowing in the system Normal e During unit operation a cracking noise may lili heard This noise is generated the casing expanding or shrinking because of temperatur
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