Videocon VZ34 Service Manual
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Videocon VZ34 Service Manual

Frost free refrigerator
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VZ34/VZ29/VZ26
Service manual
FROST FREE REFRIGERATOR

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Summary of Contents for Videocon VZ34

  • Page 1 VZ34/VZ29/VZ26 Service manual FROST FREE REFRIGERATOR...

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS......................1-3 EXPLODED VIEW & PART DETAILS................4-7 SAFETY PRECAUTIONS ....................8 DISASSEMBLY......................8-13 COMPRESSOR ADJUSTMENT..................13 MICOM FEATURE CONTROLS..................14-17 RELAY ADJUSTMENT....................18-19 SERVICING PRECAUTIONS..................19-22 TROUBLESHOOTING....................22-26 TEMPERATURE CONTROLS ..................26 PCB DETAILS......................27-36 RESISTANCE CHARACTERISTICS ................36...
  • Page 3 MODEL-VZ26 MODEL-VZ29 MODEL-VZ34 VIDEOCON REF FF250L VIDEOCON REF FF280L VIDEOCON REF FF330L...

  • Page 4: Specifications

    SPECIFICATIONS 250L Models: ITEMS SPECIFICATIONS DEPTH WIDTH HEIGHT 1450 COOLING SYSTEM FAN COOLING REFRIGERATOR PCB CONTROL TEMPERATURE CONTROL FREEZER PCB CONTROL AUTOMATIC DEFROSTING SYSTEM HEATER DEFROST DOOR FINISH PCM/ VCM OUT CASE TEXTURED PCM INNER CASE INSULATION PU FOAM (Cyclopentane) DEFROSTING SERVICE HEATER REFRIGERANT...
  • Page 5 SPECIFICATIONS 280L Models: ITEMS SPECIFICATIONS DEPTH WIDTH HEIGHT 1560 COOLING SYSTEM FAN COOLING REFRIGERATOR PCB CONTROL TEMPERATURE CONTROL FREEZER PCB CONTROL AUTOMATIC DEFROSTING SYSTEM HEATER DEFROST DOOR FINISH PCM/ VCM OUT CASE TEXTURED PCM INNER CASE INSULATION PU FOAM (Cyclopentane) DEFROSTING SERVICE HEATER REFRIGERANT...
  • Page 6 SPECIFICATIONS 330L Models: ITEMS SPECIFICATIONS DEPTH WIDTH HEIGHT 1760 COOLING SYSTEM FAN COOLING REFRIGERATOR PCB CONTROL TEMPERATURE CONTROL FREEZER PCB CONTROL AUTOMATIC DEFROSTING SYSTEM HEATER DEFROST DOOR FINISH PCM/ VCM OUT CASE TEXTURED PCM INNER CASE INSULATION PU FOAM (Cyclopentane) DEFROSTING SERVICE HEATER REFRIGERANT...

  • Page 7: Exploded View & Part Details

    EXPLODED VIEW AND PART DETAILS...
  • Page 8 EXPLODED VIEW AND PART DETAILS ( CABINET ) S.No. Part Code Object description Quantity Unit 1100118360 HOLDER,FAN MOTOR,ABS-FR,FF-Z330L 1100118108 CAP,TOP HINGE COVER,ABS,VZ330L,SIL.GREY 1100118145 HINGE,TOP,FF-Z330L 1100118111 SWITCH,DOOR,2 POLE,FF-Z330L 1100118107 COVER,HINGE,TOP,ABS,FF-VZ330L,SILKY GREY 1300015474 EPS,INSULATION,DUCT,FC,FF-Z330L 1100118155 F-LOUVER,FREEZER,HIPS-WHITE,FF-VZ330L 1100118157 DECO,F-LOUVER,HIPS-WHITE,FF-Z330L 1100118113 SHELF,FC, WITH RAIL,GPPS,PURPLE BL,VZ330 1100118117 CASE,FREEZER,GPPS,PURPLE BLUE,FF-VZ330L 1300015475 EPS,INSULATION,DUCT,RC,FF-Z330/280L 1100118156 R-LOUVER,REF,HIPS-WHITE,FF-VZ330/280L...
  • Page 9 EXPLODED VIEW AND PART DETAILS ( F-DDOR ) S.No. Part Code Object description Quantity Unit 1200077833 DOOR,FOAMED,FC,Z280,BROKEN H.L.PCB DSPLY 1100113361 GASKET,DOOR,FC,FF-Z330/280/250L 1100118127 LCD,DISPLAY BOARD,FF-Z330L 1100118128 COVER,LCD,DISPLAY BOARD,ABS-FR,FF-Z330L 1100118173 HANDLE,BASE,FC,ABS,FF-VZ330L,SILKY GREY 1100118174 HANDLE,COVER,FC,ABS,FF-VZ330L,SILKY GREY 1100118175 HANDLE,COVER STRIP,FC,ABS,VZ330L,CHROME 1100118132 MEDIBOX,HIPS-WHITE,FC,FF-VZ330L 1100118131 COVER,MEDIBOX,GPPS,FC,PURPLE BL,FF-VZ330 1100118130 DAIRY BIN,GPPS,FC,PURPLE BLUE,FF-VZ330L 1100118129 SUPPORT,UTILITY,GPPS,FC,PURPLE BL,VZ330L 1100039985 LATCH,DOOR,FC,D202...
  • Page 10 EXPLODED VIEW AND PART DETAILS ( R-DOOR ) S.No. Part C ode Object description Quantity U nit 1200075125 DOOR,FOAM ED,RC,FF-Z280L,BROKEN HAIRLINE 1100113363 GASKET,DOOR,RC,FF-Z280L 1100118176 HANDLE,BASE,RC,ABS,FF-VZ330L,,SILKY GREY 1100118177 HANDLE,COVER,RC,ABS,FF-VZ330L,SILKY GREY 1100118178 HANDLE,COVER STRIP,RC,ABS,VZ330L,CHROM E 1100118134 SUPPORT,UTILITY,GPPS,RCT,PURPLE BL,VZ330 1100118136 DAIRY BIN,GPPS,RC,PURPLE BLUE,FF-VZ330L 1100118138 COSM ETIC BOX,HIPS-WHIET,RC,FF-VZ330L 1100118137 COVER,COSM ETIC BOX,GPPS,RC,PURPLE BL,VZ 1100118139 COVER,DEODORIZER,RC,ABS-SKY BLUE,VZ330L...

  • Page 11: Safety Precautions

    SAFETY PRECAUTIONS • Unplug prior to servicing to prevent electric shock. • Whenever testing with the power on, wear rubber gloves to prevent electric shock. • If you use any kind of appliance, check regular current, voltage and capacity. • Don’t touch metal products in the freezer with wet hands. This may c ause frostbite.

  • Page 12: Disassembly

    DISASSEMBLY R-LOUVER & REF LED First of all, remove the LED PCB Cover which is snap fitted in R-Louver itself with “-” type driver after putting it comfortably in given slot on lower right side. Remove the LED PCB mounted in snaps on R-louver. Remove the screws from R-Louver with ‘+’...
  • Page 13 DISASSEMBLY Damper is located over the R-Louver assembly and is snap fitted in Return duct piece which is fitted in cabinet through foam. For uninstalling the damper, first disconnect the connectors which are mounted in back side behind the R-Louver assembly. Then, push the snaps with help of “-”...
  • Page 14 DISASSEMBLY HEATER & HEATER CORD In this refrigerator, Heater coil are used for defrosting heater. During heating, the temperature of heater very high Therefore, be careful not to burn while servicing. • After removing the F-Louver, separate the heater coil by disconnecting the connectors.
  • Page 15 DISASSEMBLY DISASSEMBLY MAIN PCB • Main PCB cover is located on back side of refrigerator in lower left corner. • Open all the mounting screws with help of a suitable ‘+’ type screw driver to open the PCB cover. • Take out the back plate carefully from the snaps given in back panel.

  • Page 16: Compressor Adjustment

    DISASSEMBLY DISASSEMBLY BOTTLE SUPPORT • Bottle racks are given in glass shelf for holding the bottles kept on these shelves. • They may create problems in putting containers above a certain height in daily use. • To adjust them, first of all take the shelf out in which these bottle racks are mounted.

  • Page 17: Micom Feature Controls

    MICOM FEATURE CONTROLS 1) FUNCTION (1) After being powered on, the system will start initial self -check each time. In normal condition, the buzzer will ring for 0.5s and all the contents will be displayed for 2s. If there is any fault found during the initial self-check, the fault code will be disposed.
  • Page 18 MICOM FEATURE CONTROLS 5) VACATION MODE (1) Press VACATION key to enter into this mode. It will show the pattern of VACATION. The setting temperature of freezing chamber is -11deg, and the temperature of refrigerating chamber will not be displayed (The refrigerating chamber will not be used). The setting temperature cannot be adjusted. (2) Press VACATION key to exit this mode manually.
  • Page 19 MICOM FEATURE CONTROLS 9) BUZZER CONTROL (1) When effective key is pressed, the back light will be light, and the buzzer will ring once (the voice will last for 0.2s, f=4.0kHz). (2) If invalid key is pressed, there will be no buzzer ringing. 10) LIGHT CONTROL (1) The refrigerator light will be on when the door of the refrigerating chamber opens.
  • Page 20 MICOM FEATURE CONTROLES (19) Press “TIME” key, the freezing temperature is “44” and the buzzer will ring in normal condition. No display will be given when there is fault. (20) Press FAST ICE key, the freezing temperature is “55” and the buzzer will ring in normal condition.

  • Page 21: Relay Adjustment

    RELAY ADJUSTMENT PTC-RELAY ROLE • PTC is attached to Hermetic Compressor used for Refrigerator, Show Case and starts Motor. Compressor for household refrigerator applies to single - phase induction Motor. • device. For normal operation of the single-phase induction motor, in the starting operation flows in both main coil and sub-coil.

  • Page 22: Servicing Precautions

    RELAY ADJUSTMENT PTC-RELAY MOTOR RESTARTING & PTC COOLING (1) For restarting after power off during normal Compressor Motor operation, plug the power cord after 5 min. for pressure balance of Refrigerating Cycle and PTC cooling. (2) During normal operation of the Compressor Motor, PTC elements generate heat continuously.
  • Page 23 SERVICE PRECAUTIONS Installation Place • Must be well ventilated. • Must be 20 cubic meter or larger. • Must be no-smoking area. • No ignitable factors must be present. Make sure before Servicing • Confirm the refrigerant by checking Name Plate and the label on the compressor, after opening the back cover.
  • Page 24 SERVICE PRECAUTIONS Air Recharging in Compressor Attach the service tube installed with a Schrader valve (one-way valve) by using the Lokring (Figure 2). Then, connect the Schrander valve (one-way valve) to the pump that is connected to the discharging hose leading to the ou tside. When discharging the residual refrigerant, repeat 3 cycle that includes 3min of pump running->pump off->30sec of the compressor running.

  • Page 25: Troubleshooting

    SERVICE PRECAUTIONS Air Recharging in Compressor Connect the charging hose (that is connected to the refrigerant (R600a) cylinder) to the Schrader valve installed on the service tube. Then, charge the refrigerant (R600a) by controlling the Throttle valve. When you do so, do not fully ope n the Throttle valve because it may make damage to the compressor.
  • Page 26 TROUBLESHOOTING OTHER ELECTRIC COMPONENTS...
  • Page 27 TROUBLESHOOTING LEAKAGE DETECTION Observe discharging point of refrigerant which may be in the oil discharging part in the compressor and hole of evaporator. Whether Compressor Whether frost forms or Whether oil leaks or No frost or forms in runs or not. not in Evaporator.
  • Page 28 TROUBLESHOOTING COMPLAINT COMPLAINT POINTS TO BE CHECKED POINTS TO BE CHECKED REMEDY REMEDY Cooling is Cooling is •Is the power cord unplugged from the outlet? •Is the power cord unplugged from the outlet? •Plug to the outlet. •Plug to the outlet. impossible.

  • Page 29: Temperature Controls

    TROUBLESHOOTING REFRIGERATING CYCLE TEMPERATURE CONTROLS ( With Buttons ) For Freezer Compartment In this mode you can select between 6 different preset cooling l e vel (which appear in the form of a bar graph from 1 to 6) Using Bottom to UP arrow keys . The LCD screen will display “Min” for 1st and 2nd levels. “Normal” for level 3 &4 “Max”...

  • Page 30: Pcb Details

    PCB DETAILS Live Neutral Compressor Defrost Heater Control Control Fan Control Photosynthatic Ref Sensor Ref Switch Display Damper Freezer Defrost Freezer Freezer Ref Lamp Sensor Lamp Switch Light Sensor...
  • Page 31 PCB DETAILS...
  • Page 32 PCB DETAILS...
  • Page 33 PCB DETAILS SWITCHING POWER SUPPLY CIRCUIT...
  • Page 34 PCB DETAILS RESET CIRCUIT DOOR SWITCH CONTROL CIRCUIT...
  • Page 35 PCB DETAILS FAN CONTROL CIRCUIT LIGHTING CIRCUIT...
  • Page 36 PCB DETAILS DAMPER CONTROL CIRCUIT COMMUNICATION CIRCUIT...
  • Page 37 PCB DETAILS...
  • Page 38 PCB DETAILS TEMPERATURE CONTROL CIRCUIT LOAD OUTPUT CIRCUIT...

  • Page 39: Resistance Characteristics

    PCB DETAILS KNOB CONTROL CIRCUIT RESISTANCE CHARACTERISTICS TABLE OF SENSORS RESISTANCE MEASURED TEMPERATURE REFRIGERATOR SENSOR FREEZER SENSOR,DEFROSTING SENSOR -40 ℃ 64.069KΩ 63.497KΩ -35 ℃ 46.732 KΩ 46.315KΩ -30 ℃ 34.387KΩ 34.080KΩ -25 ℃ 25.522KΩ 25.294KΩ -20 ℃ 19.103KΩ 18.932KΩ -15 ℃ 14.417KΩ...

This manual is also suitable for:

Vz29Vz26Ff250lFf280lFf330l

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