Split Wall-Mounted Type Air-Conditioners Service Manual KFR
Contents
1. Pe ora aeons Check the bearing Replace the bearing destroyed Connecting pipe vibrates due to improper installation or touch Check the connecting pipe the lower frame Check the vibration of the Outdoor pipes touches gives heel ica auch Tidy up the pipes Abrasion of the parts of Check if thesoun d of Replace the compressor compressor compressor is normal Tidy up the pipe s e liminate the noise source 3 4 Frequently switch on off of the compressor Check to be made Proposed remedy Add measures ofv oltage unning voltage 1s too low easure the voltage stabilization Discharge temp isto ohig h Check condensation of air caused by insufficient of intake pipe or measure if Check leakage point welding R407C compressor 1s protected operating current is lower than or add R410A by overheat rated current l e Adj h iti l Temp sensor is too close to Check the position of sensor djust the position or replace evaporator or moved the sensor Air inlet outlet of heat exchange Check indoor outdoor heat exchange speed of motor air inlet outlet is blocked or low speed of fan motor indoor air filter is too dirty or blocked Cleanup the filter remove the obstacle Too much condensation water Too much R410A on air intake pipe hig h Discharge a little R410A operating current Bad insulation of compressor high operating current overcurrent proof Improper temp set Check actual ambient temp 3 5 Promptl2. Bad connection of the power Check the socket TTT plugs or no power plug Outdoor fuse or indoor fuse is burnt Check if the fuse is good Replace the fuse power supply system Measure actual indoor temp compare to thes et temp in Wrong indoor temp set cooling set temp should be Reset the temp lower than thea ctual in heating is higher Check 1f running mode of two Wrong running mode of indoor indoor units is the same it 1s units set not available if one is heating and another is cooling 3 8 Cannot receive the remote control signal Reason Check to be made Proposed Remedy Damaged remote control or low Check ifthe indica tionis Replace the remote control or battery normal battery Short circuit of conne ctions of main control board to switc h Check the board Replace the components board Running mode oftwo indoor Check ifone ishe ating and ae Reset units is not the same another is cooling Open the air intake grill to see Adjust test mode tor emote Indoor units are in test mode the running mode control mode Remarks The above mentioned faultsi are the faults possibl y occur we will continue to collect the faults and analysis
3. Sirge Split Wall Mounted Type Air Conditioners Service Manual KFR 32GW V Wa 11 111 IV VI VII CONTENTS Phoca TE DIO Et Qim ai a lt dat Operating Principle mmmemmenneenenennzznzzzzznininirizizitizitiziziitizttizititttrttzzztz Exploded Views of the Production enenenneneeeneenenennennzsnnzoneennsnnzanza List of common wearable parts Main Technical Data and Characteristic Curves of the Production si Dismantling Procedure ssssesesesesesenenznznnznzniniinininininizniztiztiztintint Fault Analysis of the Productions corre EEE Eee eee eee renta 11 13 I Photo of the production A Feature 1 Stvlish and deluxe design 2 Compact size easy to install and operate 3 Sends out air in gentle stream for physical comfort 4 Use multi fold evaporator to create the area of heat exchange GN Intelligent blur defrost 6 Remote control II Operating Principle A Cooling After the power supply is switched on the machine is set to COOL mode With the compressor being operated the low temperature and low pressure refrigerant vapor 1s sucked into the compressor where it 1s turned into high temperature and high pressure gas Then it is cooled down in the outdoor heat ex changer by the air and becomes liquid After being throttled by the capillary the refrigerant liquid c omes into the indoor unit and then it evaporates in the indoor heat ex changer absorbing heat and reducing the roomt emperature The
4. Parts of KFR 32G W VWa C1 Remote controler RrR3Gwrrotooowxay 2 indoortemp sensor__ KFR 22G 000001L 09WX Ta indoor pipe temp sensor KER 22G 00000nL05wx Cs indoor mainsontolbourd KERZJGTIGIMOP Ta spay greece vord _KPRaGTI0012 Wx C7 Tianstomer aowa Ta sep mor aomoerows Co impeer fin 002300000006 f Tia idoor moir 00000 6003900000006 it Propelierfan 4320007200000 fi outdoor mor Krraswvosoowx 0000 b Main Technical Data and Cooling and Heating Charac teristic Curves 1 Main technical data Power supply 2231 0 IPH230 50 W Noise 538 dB A Net dimensions Dx Wx H em Packing dimensions Dx WX H em Net weight kg 3 3 Gross weight kg Refrigerant 0 70 Pipe size inch Notes 1 Rated conditions 1 Cooling Inside Drv bulbtemp 27 Outside Drv bulb temp 35 Wet bulb temp 19 Wet bulb temp 24 Heating Inside Drv bulbtemp 20 Out side Dry bulb temp TA Wet bulb temp 15 max Wet bulb temp 6 L 2 Standard length of pipe connection m 3 6 3 Horizontal grille 19 set in initial position and the indoor fan speed is high 2 Maximum conditions Cooling Inside Dry bulb temp 32 Outside Dry bulbtemp 434 Wet bulb temp 23 Wet bulb temp 264 Heating Inside Dry bulbtemp 27 Outside Dry bulbtemp 24 Wet bulb temp 18 3 The data are only for reference for details please see
5. and sound abnormally 3 Examples 3 1 Leakage and seepage of indoor unit Check to be made Proposed remedy Improper installation Indoor EE E T ta ita drain position is lower than Level the indoor unit and ae ater drain out if the indoor l i outdoor or slanting inst allation n Tas adjust the height i unit is declining of indoor unit Water collecting plate is blocked Check 1f the plate is blocked o the matters block the Water collecting plate or drain Check the location ensure 1f it Resha A A AMAAT ne pipe is cracked 18 cracked p p pip Connecting pipe bleed the water condensation water exists behind the indoor unit the wall is wet and turn colors Rewrap the conne cting pipe add new heat preservation layer Loosen wrap belt heat preservation layer is bad or layer behind indoor units is bad Suggest set theunit s to dehumidifying mode at hig h speed of air flow to lower relative humidity if the high speed is still felt lower the fan motor must be checked Water is blow out from air outlet or water drips from the outlet Lower speed of air flow High ambient relative humidity low temp speed of air flow 3 2 Poor cooling or heating effect Check to be made Proposed remedy The cooling heating load of the Enlarge the capacity of the i 8 8 Calculate the area of the room e eee room is heavy or the room is not units improve the check the close of the room closed perfectly leakproofness of the r
6. effect as far to abnormal sound be sides adopt ilisteni you should touch the frame the pipe of the air conditioner to feel the vibration Touch the easily heated parts 1 e compressor motor touch them to feel the temp Warning High temp Measure Measure the parameters of the air conditioner and relevant parts by some instruments Usually used instruments amperemeter voltmeter multimeter thermometer etc 1 e Use multimeter to test whether the ca pacitor is open the insulation of the wire and the parameters of other electrical parts use the thermometer to measure temp of airflow 2 Analyze Analyze the above results decide the reason and location of f aults and seek the solutions 2 Types of Normal Faults The type of faults is va rious The normal faults can come do wn to six types leaks block open circuit burnt lock scrape l Leak Mainly is leakage of R410A from cooling pipe system and parts leakage of condensation water from indoor units electrical leakage from electric al system and wires 2 Block Mainly is block of the pipe system block of capillary block of strainer or valve Open Circuit Mainly is open ci rcuit of el ectrical circuit include fuse blowing out connectors broke 50 Burnt Mainly is bu mout of fan motor of compressor of cap acitor of transformer a Lock Mainly is lock of compressor four way valve ti Scrape Mainly is scrape of indoor outdoor fan and nearb y parts
7. label of the unit 2 Data for cooling capacity curve Operating Indoor conditions conditions Dry bulb21 Dry bulb27 Dry bulb32 Dry bulb32 L Wet bulb15 Wet bulb19 Wet bulb23 Wet bulb23 Outdoor conditions Dry bulb35 Dry bulb43 Dry bulbS2 L ki ict bulb24 C Wet bulb26 C Wet bulb32 C 3200 3100 3000 2900 2800 2700 2600 2500 Cooling Capacity W a 2 2 a ces 2 Dry bulb temp representing outdoor conditions 5 Data for heating capacity curve Operating Indoor conditions conditions Dry bulb20 Dry bulb20 Dry bulb20 E Wet bulb15 C Wet bulb15t l Wetbulbise Dry bulb2 Outdoor conditions _ Dry bulb2 L Dry bulb7 Dry bulb24 Dry bulb 7 Wet bulbic Wet bulb6c Wet bulb138 C KFR 32GW V Wa Heating Capacity Curve Heating Capacity W 77 7 2 2 22 21 12 Dry bulb temp representing outdoor conditions if Dismantling Procedure Indoor Unit Operating step 1 Remove the panel 7777 Remove the air strainers Remove two screw covers and take off three screws of upper frame 7772 Remove the upper frame 3 Remove the electric box 1 Remove one screw of electric cover remove the electric cover 2 Remove the screw of earthing wire and take off the sensors 3 Remove the wires and one sc rew remove board and electric b
8. Views of the Production Detailed part list of KFR 32GW V Wa indoor unit Front panel assy 2 Air strainer JKER 23G 7 090 00WX KER 32G VWa 02 3 Upper frame assy KFR 23G T101 020 00_ KFR 32G VWa 03 _ Screw ST4 12FT 151 2823 87 Detailed part list of KFR 32GW V Wa outdoor unit 6 Screw ST4 12C 812823 87 KFR 32W VWa 06 8 Nut Compressor accessory KFR 32W VWa 08 9 Wire clip base KFR 22WA 050 03 KFR 32W VWa 09 2 3 ES Ez Es 16 Screw ST6 18C KFR 35W H1 000 03WX KFR 32W V Wa 16 17 Four way valve assy IKER 32W V Wa 010 00 KFR 32W VWa 17 18 Coil of four way valve KFR 27W H 000 00JL 03WX KFR 32W VWa 18 19 Capillarv pipe assy IKFR 32W V Wa 060 00 KFR 32W V Wa 19 20 ISerew ST4 10C SJ2823 87 KFR 32W VWa 20 Electric plate welding 22 CBB65 1K 35 F 450VAC KFR 32W V Wa 22 Outdoor fan motor KFR 23W T101 010 08WX 25 Top plate _ FFR 32W T1 010 01 27 Left rear plate KFR 32W T1 000 02 KFR 32W VWa 27 28 Base plate assy KF 35W T2 020 00 KFR 32W VWa 28 Middle partition welding KFR 32 O51 KFR 32GW VWa I NDOOR EXPLODE VIEW KFR 32GW VWa OUTDOOR EXP LODE VI EW 26 8 A U EE NU IV Listsof Common W earable Part s List of W earabl e
9. evaporated refrigerant vapor returns to the outdoor unit and 19 again sucked into the compressor completing the cycle With the refrigerant cycling being kept on the objective of lowering the room temperature is fulfilled B Heating After the power supply 1s switched on the machine 1s set to HEAT mode and the coil of the electromagnetic four way valve is energized After the compressor starts to operate the high temperature and high pressure refrigerant gas first comes into the heat exchanger of the indoor unit where itis cooled releases heat and increases the room temperature The cooled high pressure refrigerant 1s then throttleld in the outdoor unit and returns to the compressor af ter evaporation With such cycles being maintained the objective of increasing the room temperature is fulfilled C System Schematic Diagram Please see the following Diagram INDUUR UNIT UTDUUR UNIT TAL Lopillarv Liquid Ivalve en 00000 van gt K Indoor heat Indoor motor utdoor motor exchanger utdoor heat N exchanger L Propeller gt B i ran IATA Gas valve L ge gs FOur way valve seperattor of gas and liquid Hoone Refrigerant flow direction when heating Compressor refrigerant flow direction when cooling Air flow direction 111 Exploded
10. oom Insufficient refrigerant R410A Measure the operating current Aca PA welding the leaked point Air intake temp isto olow Too much R410A o AE Discharge a little R410A intake pipe 1stoo much temp of discharge 1s too high Effect of heat exchange 18 too Dust on outdoor condenser and Cleanup filter and condenser poor indoor filter 19 too much Some of the windings of motor fan is short circuit so cause speed decline Speed of indoor outdoor fan is re ia Repair or replace motor too low air circulation 1s small p p Check ifthe insta Ilation is Running condition is too bad proper outdoor temp 1s too high when heating No high low pressure Convexitv exists in compressor difference no clear temp or valve or lock of compressor difference in air intake inlet or discharge outlet of compressor Improve the condition use auxiliary heating Replace compressor or valve Openness of check valve is too small or the s ystem partly or completely blocked 3 3 Big noise or abnormal sound Check to be made Proposed remedy Foreign matters in wind guide or impeller fan Seis OE 4090 Check them Replace indoor outdoor fan balance Improper location of fan so fan Open the unit or move the fan ta touches the housing manually find the location ASNE POSION Open the valve use hig h pressure N to clean out the block Check the openness partl y frost on outdoor pipe system Check 1f they are Clear away
11. ox A 4 Take off one screws of water collecting plate and remove water collecting plate A 5 Take off two screws of left locating cover and two screws of moto r fastener Remove evaporator A 6 Remove impeller fan and indoor motor a Remove the four screws of motor fastener b Remove the screw of impeller fan Remove the motor and impeller A OUTDOOR UNIT Operating step l Remove the topcover six screws 2 Remove the front plate and ri ght plate 3 Remove the handle 4 Remove the left plate 5 Remove the prop eller f an and outdoor fan motor 7 Remove middle separate plate and electic Remove compressoris cover and protector Remove four way valve wire if Fault Analysis of the Product Available and Typical Examples 1 Procedure of deciding the faults Before maintaining the air conditioner firstly you should know the phenomena of the faults decide the location of the faults analyze the reason the faults occur and then search for ways to solve the faults The detailed procedures are Look Listen Touch Measure Analyze D Look Observe air c onditioneris running I e vibration condensation on evaporator leakage electrical and mechanical connection etc 2 Listen Listen to kinds of sounds of th e running air conditioner Identify the abnormal noise from the sounds Touch Touch the key position and position faulty Touch the temp of air flow to decide the heating or cooling
12. y protected by halt after compressor starts Check to be made Proposed Remedy Little or no condensation water Insufficient R410A on air intake pipe op erating 4 dd R410A current is lower than rated current Mixed with air in the system Vacuumize thes ystem Power varies when running vacuum is not good recharge R410A Operating current is lower than use high pressure N to clean rated current part of the unit out the block revacuumize frosts heavily and recharge R410A Check the windings and insulation of compressor and if Replace the compressor it is locked 3 6 The units blow out cool air when in heating mode Check to be made Proposed Remedy Listen to the units if there is Four way valve doesnit work sounds of valveisw orking Replace the valve when heating or cooling Check start or operating Replace compressor current Blocked caused by water or impurity Damaged compressor high start current Faults of control inte rrupter or other relevant circuits of the Check the circuit valve Repair or replace the c ontrol board Little condensation water on outdoor air intake pipe low Add R410A operating current Insufficient R410A causes the insufficient heating capacity Same temp of air intake inlet and discharge outlet of the Connexity of compressor Replace the compressor compressor no condensation in air intake inlet 3 7 The units doesnit work Check to be made Proposed Remedy
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