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   Technical Information

14

Service Manual

25

Technical Information

Service Manual

● Top view

● Bottom view

1

2

3

4

5
6

7

8

9

10

11

12

13

Outdoor Unit

No.

Name 

1

Compressor wiring terminal

2

Reactor wiring terminal

3

Outdoor fan wiring terminal

4

Terminal of chassis electric 
heater 

5

Terminal of compressor 
electric heater

6

Terminal of 4-way valve 

7

Grounding wire

8

Communication wire

9

Neutral wire

10 Live wire 

11

Terminal of electronic 
expansion valve

12

Terminal of temperature 
sensor 

13 Compressor overload terminal

09/12K

Summary of Contents for L4VI32-09

Page 1: ... SERVICE MANUAL ENGLISH WALL MOUNTED UNIT AIR CONDITIONING SYSTEMS MODELS L4VI32 09 L4VO32 09 L4VI32 12 L4VO32 12 ...

Page 2: ...Service Manual ...

Page 3: ... and Control 15 6 1 Remote Controller Introduction 15 6 2 Preparation before operation 15 6 3 Introduction of operation function 15 6 4 Introduction of special functions 17 6 5 Brief Description of Modes and Functions 19 Part Ⅱ Installation and Maintenance 24 7 Notes for Installation and Maintenance 24 8 Installation 28 8 1 Installation Dimension Diagram 28 8 2 Installation Parts checking 30 8 3 S...

Page 4: ...arts List 99 10 1 Indoor Unit 99 10 2 Outdoor Unit 109 11 Removal Procedure 116 11 1 Removal Procedure of Indoor Unit 116 11 2 Removal Procedure of Outdoor Unit 126 Appendix 141 Appendix 1 Reference Sheet of Celsius and Fahrenheit 141 Appendix 2 Configuration of Connection Pipe 141 Appendix 3 Pipe Expanding Method 142 Appendix 4 List of Resistance for Temperature Sensor 143 Table of Contents ...

Page 5: ...chnical Information 1 Service Manual 1 Technical Information Service Manual Part Ⅰ Technical Information 1 Summary Indoor Unit L4VI32 09 L4VI32 12 Outdoor Unit L4VO32 09 L4VO32 12 Remote Controller YAN1F1 ...

Page 6: ...6 1 SCOP Average Warmer Colder W W 4 0 5 1 3 2 Application Area m2 12 18 Indoor Unit Indoor Unit Model L4VI32 09 Fan Type Fan Diameter Length DXL mm Ф98X580 Cooling Speed SH H M L SL r min 1300 1200 1050 800 Heating Speed SH H M L SL r min 1300 1200 1050 900 Fan Motor Power Output W 20 Fan Motor RLA A 0 215 Fan Motor Capacitor μF 1 Evaporator Form Aluminum Fin copper Tube Evaporator Pipe Diameter ...

Page 7: ...gth LXDXW mm 710X19 05X508 Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0 36 Fan Motor Capacitor μF Outdoor Unit Air Flow Volume m3 h 1600 Fan Type Fan Diameter mm Φ400 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Operating Pressure for the Discharge Side MPa 4 3 Permissible Excessive Operating Pressure for...

Page 8: ... SCOP Average Warmer Colder W W 4 0 5 1 3 4 Application Area m2 16 24 Indoor Unit Indoor Unit Model L4VI32 12 Fan Type Fan Diameter Length DXL mm Φ98X633 5 Cooling Speed SH H M L SL r min 1350 1200 1050 850 Heating Speed SH H M L SL r min 1300 1150 1000 900 Fan Motor Power Output W 20 Fan Motor RLA A 0 31 Fan Motor Capacitor μF 1 5 Evaporator Form Aluminum Fin copper Tube Evaporator Pipe Diameter ...

Page 9: ...ength LXDXW mm 731X19 05X550 Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0 36 Fan Motor Capacitor μF Outdoor Unit Air Flow Volume m3 h 2200 Fan Type Fan Diameter mm Φ438 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Operating Pressure for the Discharge Side MPa 4 3 Permissible Excessive Operating Pressure f...

Page 10: ...air flow Super High Pipe length 5m Outdoor temp C Condition Indoor DB27 C WB19 C Indoor air flow High Pipe length 5m Heating operation ambient temperature range is 15ºC 24ºC 0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120 110 80 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C 220V 230V 240V 220V 230V 240V ...

Page 11: ...nit Fan speed of outdoor unit Compressor revolution rps Indoor Outdoor P MPa T1 C T2 C 27 19 35 24 09K 0 8 1 1 12 to 15 65 to 38 TURBo High 49 12K 11 to 14 64 to 37 60 27 19 35 24 18K 0 9 1 1 12 to 14 75 to 37 Super High High 52 Instruction T1 Inlet and outlet pipe temperature of evaporator T2 Inlet and outlet pipe temperature of condenser P Pressure at the side of big valve Connection pipe length...

Page 12: ...Manual 14 Technical Information Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit Unit mm Model W H D 09K 790 275 200 12K 845 289 209 W 12K 09K D H 90 150 54 168 5 462 159 5 Φ55 Φ55 54 123 5 542 179 5 83 2 124 7 35 Φ55 Φ55 35 ...

Page 13: ...Technical Information 9 Service Manual 15 Technical Information Service Manual 3 2 Outdoor Unit 712 782 257 320 540 286 510 Unit mm 257 780 596 842 286 540 320 Unit mm L4VO32 09 L4VO32 12 ...

Page 14: ...or unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Strainer Capillary Accumlator Compressor 4 Refrigerant System Diagram Liquid pipe 1 4 6mm Gas pipe 3 8 9 52mm 09 12K ...

Page 15: ...d BU Blue Grounding wire YEGN Yellow Green BK Black VT Violet oG orange Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model 600007000688 5 21752 5 20 0 18 7 6 1625 7 03 6 1625 7 03 6 1625 57 5220 78 67 33 1 63 35 17 5 8 7 2 5 5 9 5 1 63 2 5 211 7 1 6 1 8 02725 2 7 50 1 3 803 3 8 1 9 325 725 3 7 1 0 287 225 81 7 3 3 1 5 725 2 3 60 1 02725 0 5 8 7 1 ...

Page 16: ...Technical Information 12 Service Manual 21 Technical Information Service Manual Outdoor Unit 600007000687 L4VO32 09 L4VO32 12 600007000763 ...

Page 17: ... neutral wire 5 Interface of fan 6 Interface of health function live wire 7 Jumper cap 8 Auto button 9 Up down swing interface 10 Feedback interface of indoor unit 11 left right swing interface 12 Interface of wifi 13 Interface of tube temperature sensor 14 Wired controller 15 Display interface 16 Fuse 17 Terminal for gate control function 5 2 PCB Printed Diagram Indoor Unit Top view Bottom view 1...

Page 18: ...ssor wiring terminal 2 Reactor wiring terminal 3 Outdoor fan wiring terminal 4 Terminal of chassis electric heater 5 Terminal of compressor electric heater 6 Terminal of 4 way valve 7 Grounding wire 8 Communication wire 9 Neutral wire 10 Live wire 11 Terminal of electronic expansion valve 12 Terminal of temperature sensor 13 Compressor overload terminal 09 12K ...

Page 19: ...et the time of the system according to current time in the following steps 1 Pressing CLOCK button is blinking 2 Pressing or button the clock time will increase or decrease rapidly 3 Press CLOCK button again to confirm the time and return to display current time 6 3 Introduction of operation function 1 Selecting operation mode In unit on status press MODE button to select operation mode in followi...

Page 20: ...ceiver light board or wired controller is defaulted to display setting temperature Press TEMP button to view indoor or outdoor ambient temperature When is displayed it means the displayed temperature is setting temperature When is displayed it means the displayed temperature is indoor ambient temperature When is displayed it means the displayed temperature is outdoor ambient temperature Note setti...

Page 21: ... 2 Setting timer on Pressing TON button ON is blinking and time displaying zone displays the timer time of last setting Press or button to adjust the timer time Press TON button again to confirm setting ON is displayed and time displaying zone resumes to display current time Press TON button again to cancel timer and ON is not displayed 6 4 Introduction of special functions 1 Setting child lock Pr...

Page 22: ...n i v i e c e r s t i n i h t i w d e m r o f r e p e b d l u o h s r e l l o r t n o c e t o m e r f o n o i t a r e p o e h T If you need to control the main unit please point the remote controller at the signal receiving window of the main unit to improve When the remote controller is sending signal icon will be blinking for 1 second When the main unit receives valid remote If the remote contro...

Page 23: ...ature is the set value under each condition Ambient temperature is Tamb Tcompensation for heat pump unit and Tamb for cooling only unit 4 If theres I feel function Tcompensation is 0 Others are same as above 5 Fan mode Under this mode indoor fan operates at set fan speed Compressor outdoor fan 4 way valve and electric heating tube stop operation Indoor fan can select to operate at high medium low ...

Page 24: ...ure corresponding remote control code 01 current set temperature will be displayed 2 Only when remote control signal is switched to indoor ambient temperature display status corresponding remote control code 10 from other display status corresponding remote control code 00 01 11 controller will display indoor ambient temperature for 3s and then turn back to display set temperature Under this mode ...

Page 25: ...ration When 2 Tpreset Tindoor ambient temperature Tcompensation 1 unit operates according to the previous status When Tpreset Tindoor ambient temperature Tcompensation 2 compressor stops operation and outdoor fan will stop 30s later Indoor fan will be in residual heat blowing status When unit is turned off under heating mode or changed to other modes from heating mode 4 way valve will be power off...

Page 26: ... If compressor is operating under this mode fan speed will adjust according to auto fan speed if compressor stops operation under this mode indoor fan will be in residual heat blowing status When power on communication light will be blinking in a normal way after receiving a group of correct signals blinking stops for 0 2s 0 3s If theres no communication communication light will be always on If ot...

Page 27: ...Technical Information 23 Service Manual ...

Page 28: ...ly of air conditioner before checking and maintenance 2 The air condition must apply specialized circuit and prohibit share the same circuit with other appliances 3 The air conditioner should be installed in suitable location and ensure the power plug is touchable 4 Make sure each wiring terminal is connected firmly during installation and maintenance 5 Have the unit adequately grounded The ground...

Page 29: ...g in injury 6 Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas If there leaked gas around the unit it may cause explosion and other accidents 7 Do not use extension cords for electrical connections If the electric wire is not long enough please contact a local service center authorized and ask for a proper electric wire Poor connections may lead to...

Page 30: ...intenance area is well ventilated The continuous ventilation status should be kept during the operation process Check whether there is fire source or potential fire source in the maintenance area The naked flame is prohibited in the maintenance area and the no smoking warning board should be hanged Check whether the appliance mark is in good condition Replace the vague or damaged warning mark Weld...

Page 31: ...ce 1 Level meter measuring tape 4 Electroprobe 7 Electronic leakage detector 10 Pipe pliers pipe cutter 2 Screw driver 5 Universal meter 8 Vacuum pump 11 Pipe expander pipe bender 3 Impact drill drill head electric drill 6 Torque wrench open end wrench inner hexagon spanner 9 Pressure meter 12 Soldering appliance refrigerant container ...

Page 32: ...t least 250cm At least 15cm At least 50cm At least 50cm At least 30cm At least 300cm At least 200cm Space to the floor Space to the obstruction Space to the obstruction Space to the obstruction Space to the ceiling Space to the obstruction Space to the obstruction At least 30cm At least 15cm At least 15cm Space to the wall Space to the wall Space to the wall ...

Page 33: ... unit Bind up pipes and hang the indoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note this flow is only for reference please find the more detailed installation steps in this section Select outdoor unit installation location Install the sup...

Page 34: ...rding to the local safety regulations use qualified power supply circuit and air switch 3 Make sure the power supply matches with the requirement of air conditioner Unstable power supply or incorrect wiring may result in electric shock fire hazard or malfunction Please install proper power supply cables before using the air conditioner 4 Properly connect the live wire neutral wire and grounding wi...

Page 35: ... the wall above 150mm Φ55mm Rear piping hole Insulating pipe Torque wrench Open end wrench Indoor pipe Pipe Union nut Union nut Pipe joint Pipe Hex nut diameter mm Tightening torque N m Φ6 15 20 Φ9 52 30 40 Φ12 45 55 Φ16 60 65 Φ19 70 75 Refer to the following table for wrench moment of force Fig 5 Fig 6 Fig 7 5 Connect the Pipe of Indoor Unit 1 Aim the pipe joint at the corresponding bellmouth As ...

Page 36: ...in hose and power cord for installation when binding them When binding to a certain degree separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid pipe and gas pipe should be bound separately at the end 9 Hang the Indoor Unit 1 Put the bound pipes in the wall pipe and then make them pass through the wall hole 2 Hang the indoor unit on the wall m...

Page 37: ... support 2 Fix the foot holes of outdoor unit with bolts As show in Fig 20 4 Connect Indoor and Outdoor Pipes 1 Remove the screw on the right handle of outdoor unit and then remove the handle As show in Fig 21 2 Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe As show in Fig 22 3 Pretightening the union nut with hand 4 Tighten the union nut with torque wrench Fig 18 Fi...

Page 38: ...Leakage Detection 1 With leakage detector Check if there is leakage with leakage detector 2 With soap water If leakage detector is not available please use soap water for leakage detection Apply soap water at the suspected position and keep the soap water for more than 3min If there are air bubbles coming out of this position theres a leakage 8 7 Vacuum Pumping and Leak Detection 8 8 Check after I...

Page 39: ... Please refer to the malfunction analysis discharge protection overload 5 Overcurrent protection E5 OFF 3S and blink 5 times During cooling and drying operation compressor and outdoor fan stop while indoor fan operates During heating operation all loads stop 1 Supply voltage is unstable 2 Supply voltage is too low and load is too high 3 Evaporator is dirty 6 Communi cation Malfunction E6 OFF Durin...

Page 40: ...esting 4 Mainboard damaged 14 Outdoor ambient temperature sensor is open short circuited F3 OFF 3S and blink 6 times During cooling and drying operating compressor stops while indoor fan operates During heating operation the complete unit will stop operation Outdoor temperature sensor hasnt been connected well or is damaged Please check it by referring to the resistance table for temperature senso...

Page 41: ...l operate During heating operation the complete unit will stop operation 1 Measure the voltage of position L and N on wiring board XT if the voltage is higher than 265VAC turn on the unit after the supply voltage is increased to the normal range 2 If the AC input is normal measure the voltage of electrolytic capacitor C on control panel AP1 if its normal theres malfunction for the circuit please r...

Page 42: ...g operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop Replace outdoor control panel AP1 30 Module high temperature protection P8 During cooling operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop After the complete unit is de energized for 20mins check whether the thermal gre...

Page 43: ... current for compressor 36 PFC protection HC OFF 3S and blink 14 times During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop operation Refer to the malfunction analysis 37 Outdoor DC fan motor malfunction L3 OFF 3S and blink 14 times Outdoor DC fan motor malfunction lead to compressor stop operation DC fan motor ...

Page 44: ... compressor will stop while indoor fan will operate During heating operation the complete unit will stop Supply voltage is unstable 45 Malfunction of complete units current detection U5 During cooling and drying operation the compressor will stop while indoor fan will operate During heating operating the complete unit will stop operation Theres circuit malfunction on outdoor units control panel AP...

Page 45: ...on and Maintenance 41 Service Manual 80 Installation and Maintenance Service Manual If malfunction occurs corresponding code will display and the unit will resume normal until protection or malfunction disappears ...

Page 46: ...rotection Possible causes insufficient or too much refrigrant blockage of capillary and increase of suction temp improper running of compressor burning in or stuck of bearing damage of discharge valve malfunction of protector Processing method adjust refrigerant amount replace the capillary replace the compressor use universal meter to check if the contactor of compress or is fine when it is not o...

Page 47: ...e sensor broken Is mainboard broken Malfunction diagnosis process Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sensor tightly Yes Yes Yes Yes Yes Yes No No No No No No Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Replace it with a temperature sensor with the same model Make the pa...

Page 48: ...minal is firm Check if the connection of PG motor control terminal is firm Turn on the unit again measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after the louvers are opened Tighten the screw reassemble the blade motor and shaft bearing rubber base sub assy to make sure there is no foreign object between them Yes Yes Yes Yes Yes Yes Yes Yes Yes Ye...

Page 49: ...ken Detection circuit of the mainboard is defined abnormal Malfunction diagnosis process Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the jumper cap with the same model Appearance of the jumper cap Assemble the jumper cap with the same model Insert the jumper cap tightly Is malfunction eliminated Is malfunction eliminated Is malfunction elimin...

Page 50: ...n while the capacitordischarges slowly The zero cross detectioncircuit of the mainboard is defined abnormal Malfunction diagnosis process Turn power off for 1minute the turn back on The unit returns to normal Conclusion U8 is displayed due to power off on while the capacitor discharges slowly U8 is still displayed The zero cross detection circuit of the mainboard is defined abnormal Replace the ma...

Page 51: ...and Maintenance Service Manual 5 Malfunction of detecting plate WIFI JF Start Is malfunction eliminated The end check if the connection wire are correctly connected Replace the detecting plate with the same model Replace the mainboard with the same model Yes Yes No ...

Page 52: ...ic capacitor Voltage higher than 200V Fault with the voltage testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminalL andN on wiring board XT power supply Voltage within 210VAC 250VAC Shut down the power and repair the power supply to restore the range 210VAC 250VAC power on and restart the unit If the fault is eliminated Shut down the power and w...

Page 53: ... and compressor COMP secure Loose Is the connection in correct order Is the voltage input of the machine within normal range Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT Is the compressor coil resistance normal Is the insulation of compressor coil against the copper tube in good condition Is the working load of the machine too high Is the radiation good I...

Page 54: ...the voltage between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor C2 Then energize and start the unit Replace the control panel AP1 Take corrective actions according to Technical Service Manual and then energize and start the unit If there is any abnormality described above Replace the control panel AP1 If the connection between AP1 and COMP is unsecure or ...

Page 55: ... Yes No Yes No Overheat and high temperature protection Is outdoor ambient temperature higher than 53 20 minutes after the complete unit is powered off Is heat dissipation of the indoor unit and outdoor unit abnormal Normal protection please operate it after the outdoor ambient temp erature is normalized Improve the heat dissipation environ ment of the unit Does the outdoor fan work normally 1 Che...

Page 56: ...sor broken Is time for compressor stopping enough Fault diagnosis process No Yes No No Yes Yes Yes No Power on the unit Is stop time of the compressor longer than 3 minutes Restart it up after 3 minutes Does startup fail Are the wires for the compressor connected correctly Is connection sequence right Connect the wires as per the connection diagram Replace the control panel AP1 If the fault is eli...

Page 57: ...the wires for the compressor connected correctly Is connection sequence right Is the connection made in clockwise direction Connect the wires correctly Replace the control panel AP1 If the fault is eliminated Replace the compressor End Out of step occurs in operation Is the outdoor fan working normally Is the outdoor unit blocked by foreign objects Replace the control panel AP1 If the fault is eli...

Page 58: ... diagnosis process 20 minutes after the complete unit is powered off Is the terminal FA for the electronic expansion valve connected correctly Connect the wires correctly Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same less than 100 ohm Replace the electronic expansion valve If the fault is eliminated If the fault is eliminated Replace the c...

Page 59: ...FC capacitor Whether there is any damage or short circuit Replace it as per the wiring diagram and reconnect the wires If the fault is eliminated Remove the PFC capacitor and measure resistance between the two terminals Is the resistance around zero The capacitor is short circuited and the capacitor should be repla ced Restart the unit If the fault is eliminated Disconnect the terminals for the re...

Page 60: ...o Yes No Yes Yes Start Did the equipment operate normally before the failure occurs The AP1 voltage detection circuit is at fault Check wiring inside of the indoor and outdoor units Are wires broken Check the communication circuit of the outdoor unit If the fault is eliminated The communication circuit is abnormal Replace the main board of the indoor unit End If the fault is eliminated Replace the...

Page 61: ...essure nitrogen Replace the compressor Replace the mainboard with the same model End Is the supply voltage too low with overload Is the indoor outdoor heat exchanger dirty or are the air inlet and outlet blocked The fan is abnormal Fan speed is too low or fan doesnt rotate Measure the current of live wire on the main board with a clamp ampere meter Is the current higher than the value of the overc...

Page 62: ...int 4 of maintenance method for details Malfunction of compressor Compressor cant operate Refer to point 5 of maintenance method for details 9 3 Troubleshooting for Normal Malfunction 1 Air Conditioner Cant be Started Up 2 Poor Cooling Heating for Air Conditioner 3 Horizontal Louver Cant Swing Possible Causes Discriminating Method Air conditioner Status Troubleshooting No power supply or poor conn...

Page 63: ...Water leaking from drain pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection place of indoor unit Wrap it again and bundle it tightly 5 Compressor Cant Operate Possible causes Discriminating method air conditioner status Troubleshooting Wrong wire connection or poor connection Check the wiring status according to circuit diagram Connect wires according to wiring di...

Page 64: ...on and Maintenance 60 Service Manual 99 Installation and Maintenance Service Manual 10 Exploded View and Parts List 10 1 Indoor Unit The component picture is only for reference please refer to the actual product ...

Page 65: ...100245 1 12 Wall Mounting Frame 01252043 01252484 1 13 Cross Flow Fan 10352059 10352056 1 14 Fan Motor 150120874 15012146 1 15 Connecting pipe clamp 2611216401 2611216401 1 16 Rubber Plug Water Tray 76712012 76712012 1 17 Stepping Motor 1521212901 1521210701 1 18 Crank 73012005 73012005 1 19 Electric Box Assy 100002001192 100002001118 1 20 Axile Bush 10542036 10542036 1 21 Terminal Board 42011233 ...

Page 66: ...ce Manual 109 Installation and Maintenance Service Manual 10 2 Outdoor Unit The component picture is only for reference please refer to the actual product L4VO32 09 15 14 13 12 6 5 4 3 2 1 7 8 9 10 18 17 19 20 21 22 23 25 27 11 24 16 26 28 ...

Page 67: ... 10333004 1 10 Chassis Sub assy 017000000134P 1 11 Brushless DC Motor 1501308507 1 12 Top Cover Sub Assy 01253073 1 13 Motor Support 01703104 1 14 Condenser Assy 011002000372 1 15 Rear Grill 01473009 1 16 Capillary Sub assy 030006000337 1 17 Cut off Valve 071302391 1 18 Big Handle 2623343106 1 19 Cut off Valve 071302391 1 20 Valve Support 01713142P 1 21 Right Side Plate Sub Assy 01303178 1 22 4 Wa...

Page 68: ...e 64 Service Manual 112 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product L4VO32 12 1 2 3 4 5 7 8 9 10 11 12 13 14 27 26 15 16 17 18 19 20 21 22 23 24 25 6 ...

Page 69: ...1 8 Compressor and Fittings 00103925G 1 9 Compressor Gasket 76710287 3 10 4 Way Valve Assy 030152000016 1 11 Big Handle 2623343106 1 12 Valve Cover 22243006 1 13 Cut off Valve 071302391 1 14 Cut off Valve 07130239 1 15 Valve Support 0171314201P 1 16 Front Grill 22413044 1 17 Cabinet 01433033P 1 18 Axial Flow Fan 10333011 1 19 Chassis Sub assy 017000000091P 1 20 Electric Box Assy 100002001110 1 21 ...

Page 70: ... panel Push the left filter and right filter until they are separate from the groove on the front panel Remove the left filter and right filter respectively A1 B6 C2 C4 display Screw off the 2 screws that are locking the display board Separate the display board from the front panel A2 A3 display Screw off the 2 screws that are locking the display board This display can be disassembled only after r...

Page 71: ...n vertical louver and bottom case to remove vertical louver Loosen the connection clasps between front case sub assy and bottom case Lift up the front case sub assy and take it out 5 Remove front case sub assy 6 Remove vertical louver Front case sub assy Front case sub assy Clasp Screw caps Screws Screw Vertical louver Vertical louver Clasps Bottom case Remove the screws fixing detecting plate and...

Page 72: ...ure sensor Screw off 1 grounding screw Remove the wiring terminals of motor and stepping motor Remove the electric box assy Twist off the screws that are locking each lead wire and rotate the electric box assy Twist off the screws that are locking the wire clip Loosen the power cord and remove its wiring terminal Lift up the main board and take it off 7 Remove electric box assy Electric box Electr...

Page 73: ...irclip and then pull out the terminals 2 Pull out the holder for some terminals at first holder is not available for some wiring terminal hold the connector and then pull the terminal circlip soft sheath holder connector Procedure Step Remove 3 screws fixing evaporator assy 8 Remove evaporator assy Screws Connection pipe clamp Evaporator assy Evaporator assy Screw Groove Bottom case Clasp Connecti...

Page 74: ... the motor clamp Remove the screws at the connection place of cross flow blade and motor lift the motor and cross flow blade upwards to remove them Remove the bearing holder sub assy Remove the screw fixing step motor and then remove the step motor Screws Screw Motor clamp 9 Remove motor and cross flow blade Motor Cross flow Holder sub assy Step motor Screws a b ...

Page 75: ... L4VO32 09 Top panel Right side plate Big handle Screw Screws Screw the big handle upwards to make the clasp of big handle separate from the groove of right side plate and then remove the big handle then remove the top panel Procedure Step Screws Front grille Remove connection screws between the front grille and the front panel Then remove the front grille 3 Remove front grille ...

Page 76: ...vice Manual Procedure Step Screws Screws Screws Screws Screw off the screws that are locking the front cover Then take it off Front cover 4 Remove the front cover 5 Remove axial flow blade Remove the nut fixing axial flow blade and then remove the axial flow blade Nut Axial flow blade ...

Page 77: ...late Protective grille Screws 1 Screws 2 Remove the screws 1 fixing protective grille and then remove the protective grille Remove the screws fixing electric box assy pull out each wiring terminal lift the electric box assy upwards to remove it Note When pulling out the wiring terminal pay attention to loose the clasp and dont pull it so hard 6 Remove protective grille and right side plate 7 Remov...

Page 78: ...e with wet cloth completely to avoid damaging the valve due to high temperature Unsolder weld point of capillary Sub assy valve and outlet pipe of condensator Thenremove the capillary Sub assy Do not blockthe capillary when unsoldering it Note be fore unsoldering discharge refrigerantscompletely Remove the 4 tapping screws fixing the motor Pull out the lead out wire and remove themotor Remove the ...

Page 79: ...ng screws of the compressorand remove the compressor 11 Remove clapboard sub assy Liquid valve Compressor Gas valve 12 Remove Compressor Remove the 2 screws fixing the gas valve Unsolder the welding spot connecting gas valveand air return pipe and remove the gas valve Note it is necessary to warp the gas valve whenunsoldering the welding spot Remove the 2screws fixing liquid valve Unsolder the wel...

Page 80: ...tenance Service Manual Procedure Steps 1 Remove big handle 2 Remove top cover top cover big handle valve cover Before disassamble Remove the screws fixing big handle valve cover and then remove them Remove the screws fixing top panel and then remove the top panel L4VO32 12 ...

Page 81: ...e and the front panel Then remove the front grille Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel Remove the screws fixing protective grille and then remove the protective grille Remove the nut fixing the blade and then remove the axial flow blade Remove the screws fixing right side plate left side plate and then remove th...

Page 82: ...ews fixing motor and then remove the motor Remove the screws fixing motor support and then remove the motor support Remove the screws fixing clapboard and then remove the clapboard Remove the screws fixing electric box assy cut off the tieline pull out each wiring terminal lift the electric box assy upwards to remove it Note When pulling out the wiring terminal pay attention to loose the clasp and...

Page 83: ...rt Unsolder the welding joint connecting the valve with capillary and condenser unsolder the welding joint connecting the gas valve and air return pipe remove the 2 screws fixing the gas valve to remove the gas valve Unsolder the welding joint connecting the liquid valve and Y shaped pipe remove the 2 screws fixing the liquid valve to remove the liquid valve Note Before unsoldering the welding joi...

Page 84: ... charging amount prolonged length of liquid pipe X additional refrigerant charging amount per meter Appendix 1 Reference Sheet of Celsius and Fahrenheit Appendix 2 Configuration of Connection Pipe Set temperature Conversion formula for Fahrenheit degree and Celsius degree Tf Tcx1 8 32 Ambient temperature Fahrenheit display temperature Fahrenheit Celsius Fahrenheit display temperature Fahrenheit Ce...

Page 85: ...vent the burrs from getting into the pipe C Put on suitable insulating pipe D Put on the union nut Remove the union nut on the indoor connection pipe and outdoor valve install the union nut on the pipe E Expand the port Expand the port with expander A is different according to the diameter please refer to the sheet below Outer diameter mm A mm Max Min Ф6 6 35 1 4 1 3 0 7 Ф9 52 3 8 1 6 1 0 Ф12 12 7...

Page 86: ... 09 71 2 523 110 0 758 6 66 88 33 10 63 72 2 439 111 0 737 5 63 46 34 10 2 73 2 358 112 0 717 4 60 23 35 9 779 74 2 28 113 0 697 3 57 18 36 9 382 75 2 206 114 0 678 2 54 31 37 9 003 76 2 133 115 0 66 1 51 59 38 8 642 77 2 064 116 0 642 0 49 02 39 8 297 78 1 997 117 0 625 1 46 6 40 7 967 79 1 933 118 0 608 2 44 31 41 7 653 80 1 871 119 0 592 3 42 14 42 7 352 81 1 811 120 0 577 4 40 09 43 7 065 82 1...

Page 87: ...17 33 14 18 72 3 252 111 0 983 5 84 61 34 13 59 73 3 144 112 0 956 4 80 31 35 13 04 74 3 04 113 0 93 3 76 24 36 12 51 75 2 94 114 0 904 2 72 41 37 12 76 2 844 115 0 88 1 68 79 38 11 52 77 2 752 116 0 856 0 65 37 39 11 06 78 2 663 117 0 833 1 62 13 40 10 62 79 2 577 118 0 811 2 59 08 41 10 2 80 2 495 119 0 77 3 56 19 42 9 803 81 2 415 120 0 769 4 53 46 43 9 42 82 2 339 121 0 746 5 50 87 44 9 054 83...

Page 88: ...100 3 32 16 384 5 23 53 74 62 11 32 101 3 22 15 362 9 24 51 41 63 10 93 102 3 13 14 342 8 25 49 19 64 10 54 103 3 04 13 323 9 26 47 08 65 10 18 104 2 96 12 306 2 27 45 07 66 9 83 105 2 87 11 289 6 28 43 16 67 9 49 106 2 79 10 274 29 41 34 68 9 17 107 2 72 9 259 3 30 39 61 69 8 85 108 2 64 8 245 6 31 37 96 70 8 56 109 2 57 7 232 6 32 36 38 71 8 27 110 2 50 6 220 5 33 34 88 72 7 99 111 2 43 5 209 34...

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Page 92: ...Scan here to download the latest version of this manual Σαρώστε εδώ για να κατεβάσετε την τελευταία έκδοση του εγχειριδίου WALL MOUNTED UNIT AIR CONDITIONING SYSTEMS ...

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