LG LRTBC2025T precautio Servicing Precautions Download Page 26 | Manualshive

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Summary of Contents for LRTBC2025T precautio

Page 1: ...cause the melted alloy is sucked into the tubes and blocks them the pressure must be rebalanced when vacuum is in the system when soldering As soon as the vacuum operation is over add the quantity in grams of R 134a to the refrigeration system Remember that every system has an exact quantity of R 134a that can be added with a tolerance of 5 grams Figure 4 TO THE R 134a CYLINDER _ _ TO THE REFRIGER...

Page 2: ...Crisper Used to keep fruits and vegetables fresh and cdsp Base Grille Push the grille toward the refdgerator until it snaps into place Lamp Freezer Door Bin Door Cooling On the refrigeratordoor the cold air passageway is installedto supply cold air to the doorside of the refrigerator compartment Egg Tray Can Server Dairy Corner Can Storage Adjustable Door Bin Refrigerator Door Rack Leveling Screw ...

Page 3: ...hinge to the body to remove the refrigerator door only 3 2 DOOR SWITCH 1 To remove the door switch pull out it with a slotted type driver as shown in figure 9 2 Disconnect the lead wire from the switch LEAD WIRE DOOR SWITCH Figure 9 3 3 THERMOSTAT 1 Remove Control Bc_ R by loosening 2 screws attached to ceilingof Reffigerator comparb_ent Figure 10 Separate the thermostat and dial knob F Remove the...

Page 4: ...place the Defrost Control assembly after cutting the Tie Wrap Figure 14 SHROUD F Figure 13 DEF THERMO FUSE M HOLDERFUSE Figure 14 3 6 LAMP REFRIGERATOR ROOM LAMP Figure 16 1 3 6 1 Refrigerator room lamp 1 Unplug the power cord from the outlet 2 Remove refrigerator shelves 3 Release the hooks on both ends of the lamp shield and pull the shield downward to remove it 4 Turn the lamp counterclockwise ...

Page 5: ...n flows in both main coil and sub coil After the starting is over the current in subcoil is cut off The proper features of PTC play aft the above roles So PTC is used as a motor starting device 4 2 3 PTC Applied Circuit Diagram According to Starting Method for the Motor OVERLOAD PROTECTOR O L P F c q F COMPRESSOR PTC STARTER HERMETIC TERMINAL RSIR Figure 19 4 2 4 Motor Restarting and PTC Cooling 1...

Page 6: ... the OLP protects Motor by catting off currant which flows to the Compressor Motor 4 3 2 Role of the OLP 1 The OLP is attached to the Hermetic Compressor used for the Refrigerator and prevents the Motor Coil from being started in the Compressor 2 Do not turn the Adjust Screw of the OLP in any way for normal operation of the OLR Composition and connection diagram of OLP 5 CIRCUIT DIAGRAM CONTACTING...

Page 7: ...er _ heck the resistance of Motor Compressor _ Check the resistance of PTC Starter _ Check OLR _ sChartieCnkg state i_ heck the resistance among M C S C and M S in Motor Compressor _ heck the resistance of two terminals in PTC Starter N_O YES __ Replace Compressor I YES NO _ Replace PTC Starter YES _1 Check if applying I __ OLP works within I YES _ a regular OLR I _ 130 sec in forcible OLPI _ I I ...

Page 8: ...c components I I I _Figure 21_igure 22 Normal operation of the Defrost Timer is impossible No defrosting Poorcooling fl Position the Cam Shaft to _ the point of first click sound and check the current flowing between terminals No t brown and No 2 bright orange F Next position the Cam Shaft to the point of second click sound and check the current flowing between terminals ___ No 1 brown and No 4 bl...

Page 9: ...ted in sub coil of Compressor Cooling ability is poor I Fan motor doesn t run Much frost is built upon the EVAPORATOR I Check capacity of OLR The items described above are normal Lack of capacity _ _ oil of motor Compressor i I Check current flowing _ _ of the door S W Poor contacting Check current flowing _ Coil is shorted in the Fan Motor I I Check the running _ Running is poor condition of Time...

Page 10: ...e often or check iftbe door is closed it firml_ Dew forms Check if ambient temperature and humidify Wipe dew with a dry cloth This occurrence in the Exterior Case of surroumding air are high is solved naturally in low temperature and humidity Is there gap in the door gasket Fill up the gap Abnormal Is the set positioned in a firm and even place Adjust the Adjust Screw and position noise in the fir...

Page 11: ... temperature Refrigerant u_ _ Refrigeratordon tcool formed MOISTURE Cooling operation Flowing sound of refrigerant Lower than Cooling operation restarts CLOG stops periodically is not heard and frost melts ambient when heating the inlet of temperature capillary tube O COMP Freezer end Low flowing sound of A little higher Low pressure at high side O m RESSION Refrigerator refrigerant is heard and a...

Page 12: ...ow pressure sides Vacuum efficiency can be improved are evacuated at the saree by operating compressor during time for models above 200 L evacuation Vacuum EA Use R 134a exclusive To protect mixing The rubber pipes for R 12 refrkJerant p_oing manifold of mineral and shall be melted when they are used for ester oils R 134a refrigerant causes of leak _ 1 Pipe EA Use R 134a exclusive To protect R 12 ...

Page 13: ...orm icing removing operation for dropping ices of ice removing tray from the ice bank If ices are not fully tilled Perform ice removing control after supplying water to the ice removing tray by operating solenoid of the ice valve As operation for the assembty line and service of refdgerator pressing a l Maker Test Switch allows to operate in the order of initial _ ice removing _ water supply contr...

Page 14: ...ble i SWITCH NO TIME t Wl W2 Sy _ iOFF OFF OFF _5_ I o_ ___ o_ _9 _FF O_t OFF 10_ _ _F OFF f21_ Rema_s The quantity of water supply may differ depending on the setting status of the dip switch or on water pressure as water supply method is of a pattern of direct connac tion to water cock 3 The change of the quantity of water supply setting may be done according to the changed time even after chang...

Page 15: ...ing motor and keeps the ice making tray at the maximum dis tortion status and makes ices be separated from the ice making tray In this case ice detecting lever automatically oper ates lifting operation with ice removing operation 4 ice removing control positively rotates CW the ice removing motor and stops it for a second as it considers as maximum distortion point ica detecting axle 160 if the se...

Page 16: ...the level the status immediately performs ice removing operation irrespective of the ice generation conditions of the ice making tray Caution shall be exercised as water may overflow if operating the test function at the water status that ice making is not done A cycle of water supply is performed at the level adjusting operation after ice removing operation Therefore the test button allows to che...

Page 17: ... Ddve circuit of ice removing motor 0C5 and auxiliary circuit is normal HALL IC Defect between PIN NO 20 of IC1 boards Be sure ice removing and returning to the level when pressing the TEST S W Defect of ice making KIT TEST S W Both ends of TEST SP _ 3 6 pin of PCB CON2 3 6 are at open status TEST S W Defect between boards PIN NO 19 of IC1 Defect of water supply Water supply valve conduct current ...

Page 18: ...power of more than 175V is applied 7 4 2 Vibration circuit XlN IC1 xc_T MICOM Circuit used for synchronous clock generation for transmitting receiving information of the inside logic elements of IC and basic time generation for calculating time Rated parts must be used as counting time is changed at the IC1 or the OSC1 does not operate if SPEC would be changed 7 4 3 Reset circuit The reset circuit...

Page 19: ...7 4 4 Load drive circuit 1 Load drive status check D5 I WAT RVALVEN ICE U _ I u Ill oK _ KRCIO2MI I _A_ O_ IC1 _ MICOM Load Type Water Valve Measurement Location _ ON I V below Condition OFF 12V 22 ...

Page 20: ... 18 19 2O CCLOJ lo4 ccllJ 104 _ cc 2J_ io _ 7 IOOUF 4 7KX2 REVERSE 8 2 zov CON2 FORWARD 5 This circuit is a circuit used to embody functions such as ice removing full ice detection level noise and ice making tem perature detection of ice making tray ice making container 23 ...

Page 21: ...7 5 Main PWB Assembly and Parts List 7 5 1 MAIN PWB 24 ...

Page 22: ...1 2 5 V_S21_ 14_ SAMHWA 16 610_1B800_ 12_NRI402 IL JIN I C 17 om_l_ceml moll m IN4148 II_oqM D5 tly c 18 0 04_04_ _ 1N4004 r2 _ iu DI_D4 19 _ lIP S _ 3P DIp o_ _x 2_ _ _R VE IC BA6222 R_ IC5 21 o_z_6a_t _ 200uF 35_ c_1 22 0_1_1H_1_ _ 24 0_ 47711_t8 470uF125 _ _Jl_ 2_ 0 _271F6 _ 22_F 16V _E3 26 0_476_1_ 47uF 25V 2_ 0C_211_ _ r wa_ 223 100V SBL CMI_CM3 28 o_q_ mo_ _o2 25v 26 _ g_ r tF_al_ 223 25V T_...

Page 23: ...AM CON1F_n_s K_4 IC2 _ T kgl lJ I X l_ lo Lo LT2 Llo L _ L GSN 1A 47K 4 D5 I 1 1 T I_l m F _ IF _ I 4 TKm 15 WATER VALVE L_ I o 02 OKI I ICE I KRCIO2MI I n_ i 1 104 3 CC6 lcoC 5 2 _104 V_ Voss TEST XIN XOUT RESET 26 ...

Page 24: ... I_ 104 n_ REVERSE 6 FBRVARD 5 IC5 BA6222 CC8 104 CC9 R8 R7 7K RIO R9 K RF1 Rll 6 2 KF OOuF 2_v 2 68 1 2W CM3 10 i 223 100V CON2 8 7 6 3 Z ICE MAKER MOTOR ICE MAKER TEST S W ICE MAKER SENSOR 21 22 23 4 10 12r 13 16 24_C 26 CON101 _ 7 _ U___ WATER SUPPLYING TIME CDNTRBL S W I I 27 ...

Page 25: ...8 EXPLODED VIEW REPLACEMENT PARTSLIST The parts of refrigerator and the shape of each part are subject to change in different localities Capacitors and fuse are optional parts GR T622 GR T722 I I 28 ...

Page 26: ...i 29 m ...

Page 27: ..._30 _ ...

Page 28: ...ICE MAKER PART 31 ...

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