AEG Electrolux REFRIGERATION Service Manual
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AEG Electrolux REFRIGERATION Service Manual

AEG Electrolux REFRIGERATION Service Manual

No frost total with erf2050 electronic digits aeg styling
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© Electrolux Home Products S.p.A.
Spares Operations Italy
Corso lino Zanussi, 30
I - 33080 Porcia (PN)
Fax +39 0434 394096
S.O.I.
Edition: 11.2006
- ITZAA
Publication no.
599 38 47-44
EN
1/44
SERVICE MANUAL
REFRIGERATION
REFRIGERATORS
NO FROST
TOTAL
with
ERF2050
electronic
DIGITS
AEG styling
FACTORY: HUY
599 38 47-44

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Summary of Contents for AEG Electrolux REFRIGERATION

  • Page 1 SERVICE MANUAL REFRIGERATION REFRIGERATORS © Electrolux Home Products S.p.A. NO FROST Spares Operations Italy Publication no. TOTAL Corso lino Zanussi, 30 with I - 33080 Porcia (PN) 599 38 47-44 ERF2050 Fax +39 0434 394096 electronic S.O.I. DIGITS AEG styling Edition: 11.2006...

  • Page 2: Table Of Contents

    CONTENT INTRODUCTION ............................5 AIR CIRCULATION............................ 7 REFRIGERATION CIRCUIT........................8 ELECTRIC WIRING........................... 9 COMPONENTS ............................11 5.1 Control panel ........................... 11 5.2 Electronic boards ..........................12 5.2.1 Power board ERF2050 ......................13 5.2.2 Display board ERF2000......................16 5.3 Cooler compartment ........................17 5.3.1 Temperature sensor .......................
  • Page 3 10 DISPLAY SYMBOLS ..........................43 10.1 Cooler compartment ........................43 10.2 Freezer compartment ........................44 - ITZAA 3/44 599 38 47-44...
  • Page 4 - ITZAA 4/44 599 38 47-44...

  • Page 5: Feature

    AEG styling air flow regulator (damper) LED lighting (optional depending on the model) They are appliances (CBNF 350, CBNF 390 e CBNF 395) with the following PNCs: MODEL BRAND 925034004 S75358KG3 AEG-Electrolux 925034005 S75358KG3 AEG-Electrolux 925034006 S75350KG3 AEG-Electrolux 925034007...
  • Page 6 The appliance has the following functions: • rapid freezing • rapid cooling • freezer temperature alarm • cooler compartment holiday The appliance consists of the following compartments: • freezer; • cooler; The evaporating circuit consists of: • cold module (freezer compartment); Key: A = control panel B = cooler compartment (No Frost)

  • Page 7: Air Circulation

    2 AIR CIRCULATION Unlike in the PARTIAL NO FROST refrigerator, in the TOTAL type the cooler and the freezer communicate each other, therefore, the battery evaporator cools both compartments. The cold produced by the battery evaporator in the freezer compartment, is distributed by the fan F placed be- hind the cold module.

  • Page 8: Refrigeration Circuit

    3 REFRIGERATION CIRCUIT Key: 1. compressor; 2. condenser; 3. anti-condensation coil; 4. dehydrator filter; 5. capillary; 6. battery evaporator (freezer compartment); 7. exchanger. - ITZAA 8/44 599 38 47-44...

  • Page 9: Electric Wiring

    4 ELECTRIC WIRING (Check the specific diagram for each model!) - ITZAA 9/44 599 38 47-44...
  • Page 10 Key: connection box compressor motor protector defrosting heater lamp freezer door switch ON/OFF switch safety thermal switch (+40 °C) defrosting cut-out switch (+8 °C) electronic board ERF 2050 air flow regulator (damper) cooler air temperature sensor (cable colour: brown) freezer air temperature sensor (cable colour: white) LED electronic board (optional) yellow-green brown...

  • Page 11: Components

    5 COMPONENTS 5.1 Control panel Key: Cooler compartment A. ON/OFF button B. cooler temperature increase button (+) C. cooler temperature displaying D. cooler temperature decrease button (-) E. COOLMATIC function button (rapid cooling) F. COOLMATIC function pilot lamp (rapid cooling) Freezer compartment G.

  • Page 12: Electronic Boards

    5.2 Electronic boards The electronic board of the appliance consists of: 1. power board ERF2050 2. display board ERF2000 The two electronic boards are connected by means of a flat cable with a connector; therefore, the two boards are available singularly as spare part. - ITZAA 12/44 599 38 47-44...

  • Page 13: Power Board Erf2050

    5.2.1 Power board ERF2050 - View of the electronic board (side of components): 1. earth contact 2. free 3. line 4. compressor 5. neutral 6. lamp neutral 7. lamp 8. defrosting heater neutral 9. defrosting heater 1. fan line 2. fan neutral - ITZAA 13/44 599 38 47-44...
  • Page 14 1. free 2. free 3. LED light board (+) (optional) 4. LED light board (-) (optional) 5. damper 6. damper 7. damper 8. damper 1. free 2. free 1. cooler air temperature sensor 2. cooler air temperature sensor 3. free 4.
  • Page 15 1. free 2. free 3. free 4. free 1. free 2. free 3. freezer door switch 4. freezer door switch - ITZAA 15/44 599 38 47-44...

  • Page 16: Display Board Erf2000

    5.2.2 Display board ERF2000 Key: = reed element = cooler temperature increase button (+) = cooler temperature decrease button (-) = COOLMATIC function button (rapid cooling) = freezer temperature increase button (+) = freezer temperature decrease button (-) = FROSTMATIC function button (rapid freezing) SW10 = alarm deactivation button DISP1...

  • Page 17: Cooler Compartment

    5.3 Cooler compartment Key: 1. cooler door magnet 2. display board reed element 3. air flow regulator (damper) 4. carbon air filter 5. LED lighting (optional depending on the model) A. cooler air temperature sensor - ITZAA 17/44 599 38 47-44...

  • Page 18: Temperature Sensor

    5.3.1 Temperature sensor 1 NTC sensor detects the temperature of the cooler: • cooler air temperature sensor (placed inside the right air vent grid) The cooler air temperature sensor is used both to control the appliance by means of the air flow regulator (damper) and to display the cooler compartment temperature.

  • Page 19: Air Flow Regulator (Damper)

    5.3.3 Air flow regulator (damper) The temperature regulation of the cooler compartment occurs by means of the passage or not of cold air from the damper, which can have only 2 fixed positions, opened or closed. The air flow regulator (damper) 1 is located inside the diffuser lamp holder 2. The damper consists of a door and a stepping motor and it is connected to the electric wiring by means of a 4- pole connector.

  • Page 20: Led Lighting (Optional Depending On The Models)

    5.3.5 LED lighting (optional depending on the models) The LED lighting is obtained by means of a electronic board ERFL100. The electronic board is placed inside the air diffuser and is connected to the electric wiring through a 3-pole connector. The voltage of the electronic board is 18 VDC (direct current).

  • Page 21: Freezer Compartment

    5.4 Freezer compartment 1. freezer door button 2. cold module A. freezer air temperature sensor - ITZAA 21/44 599 38 47-44...

  • Page 22: Cold Module

    5.4.1 Cold module 1. thermal switches 2. cold module fan 3. cold module defrosting heater 5.4.2 Thermal switches The thermal cut-outs are positioned in direct contact with the battery evaporator. They switch off the defrosting heater respectively at: • +8 °C cut-out defrosting switch (wire colour: black - blue) •...

  • Page 23: Cold Module Fan

    5.4.3 Cold module fan The fan is located behind the cold module. The air is intaken by the fan, therefore, in case of its replacement, ensure that the air is forced towards the cell bottom. The fan has the following characteristics: voltage 240 V power 3,1 W speed 2000 rpm...

  • Page 24: Temperature Sensor

    5.4.5 Temperature sensor 1 NTC sensor detects the temperature of the freezer compartment: • freezer air temperature sensor (located inside the freezer cell) The freezer air temperature sensor is used both to control the appliance by means of the fan and the compres- sor and to display the freezer compartment temperature.

  • Page 25: Door Switch

    5.4.6 Door switch The battery evaporator defrosting is driven by the electronic board and depends also on the detection of the opening of the freezer door by means of: • a button for the freezer door control (located on the left side of the cold module). Freezer door button 5.5 Compressor compartment Key:...

  • Page 26: Main Functions

    6 MAIN FUNCTIONS 6.1 Normal Warning: Unplug the appliance before operating. In case of first switching on with a freezer compartment temperature higher than 10 °C, the appliance operates with a test cycle (for the factory) for a maximum time of about 1,5 hours. In this period do not check the correct functioning of the appliance, since the loads are activated only for internal check (compressor, fan and defrosting heater).

  • Page 27: Normal With First Switching On Or Power Failure

    6.2 Normal with first switching on or power failure In case of fault when the appliance is switched on for the first time or in case of a power failure, one of the two conditions described below occurs: 1. If the internal temperature is higher or the same as the sensor cut-in temperature (CUT-IN), when the power is restored, the electronic board activates the compressor and the fan till the set temperature is reached and after 5 hours the electronic board activates the defrosting procedure (after the compressor cut-out) 2.

  • Page 28: Defrosting

    6.3 Defrosting All the humidity in the compartment accumulates on the evaporator, which is the coldest part of the compart- ment; periodically, about every 14 hours with normal door opening (up to 72 hours if the doors never open!), it is then necessary to defrost the ice on the battery.

  • Page 29: Flow Chart For The Defrosting Management

    6.4 Flow chart for the defrosting management START More than 5 h elapsed after power on & compressor off or compressor on for more than 2,5 h? DEFROSTING Resetting door accumulated timer More than 14 h elapsed after SUPER function activated? the last defrosting? More than 14 h elapsed after the last defrosting &...

  • Page 30: Frostmatic Function (Rapid Freezing)

    6.5 FROSTMATIC Function (rapid freezing) The FROSTMATIC function (rapid freezing) is activated by pushing the relative button, therefore: • The pilot lamp relative to the FROSTMATIC function lights up; • The compressor operates in thermostatic conditions and not continuously (like the temperature knob was on max.

  • Page 31: Malfunctioning Of Cooler Air Temperature Sensor

    6.8 Malfunctioning of cooler air temperature sensor If during the normal operation a failure occurs to the cooler NTC temperature sensor (the signal coming from the sensor is out of range), then: • The display shows cooler temperature sensor faulty. •...

  • Page 32: Malfunctioning Of Freezer Temperature Sensor

    6.9 Malfunctioning of freezer temperature sensor If during the normal operation a failure occurs to the freezer NTC temperature sensor (the signal coming from the sensor is out of range), then: • The display shows freezer temperature sensor faulty. • The appliance operates with preset cycle when the compressor is powered for 40 minutes and remains off for 40 minutes alternatively.

  • Page 33: Alarms

    7 ALARMS 7.1 Freezer compartment temperature alarm When the freezer compartment reaches -11 °C, the temperature alarm activates: • The display digits flash. • The temperature alarm pilot lamp light up. • The buzzer sounds. Push the alarm deactivation button to deactivate the buzzer. When normal conditions are reset (after a power failure): •...

  • Page 34: Accessibility

    8 ACCESSIBILITY 8.1 Freezer compartment Warning: Disconnect the appliance from the electric power before operating with the appliance. 8.1.1 Battery evaporator To access the battery evaporator and its components (fan, defrosting heater, door switch, and thermal switch- es) perform the following operations in sequence: a.
  • Page 35 h) Lift and pull the air vent grid. i) Unscrew the 2 fixing screws of the air diffuser. l) Cut the air diffuser pulling and lifting it up. m) Remove the 2 fixing screws of the cold module. n) Pull backward the cold module support releasing o) View of the rear water drain duct.
  • Page 36 p) Release the left hook of the defrosting heater. q) Release the right hook of the defrosting heater. r) Cut the wiring tie of the thermal switches and s) Remove the sealing rubber. release them from the evaporator. Note: The defrosting and cut-out thermal switches (+8 / +40°C) are connected together, therefore they are not available as single spare parts.
  • Page 37 v) The heater is fitted to the evaporator by means of w) Remove the fan extracting it from the evaporator the aluminium ties. support. In case of replacement of the fan, it is necessary to ensure that the fan draws in air. x) To remove the freezer door switch.

  • Page 38: Control Panel

    8.2 Control panel Warning: Unplug the appliance before operating. To access the control panel and its components (power/display boards and electric connectors) perform the following operations: a) Unscrew the 2 fixing screws of the control panel b) Release the 2 hooks of the control panel insert- locating under the upper hinges.
  • Page 39 e) View of the electronic board connectors. - ITZAA 39/44 599 38 47-44...

  • Page 40: Cooler Compartment Accessibility

    8.3 Cooler compartment accessibility Warning: Disconnect the appliance from the electric power before operating with the appliance. 8.3.1 Air flow regulator (damper) To access the air diffuser and its components (air flow regulator damper and lamp holder) perform the following operations in sequence: a) Open the air carbon filter door, release and b) Unscrew the 2 front fixing screws of the lamp...

  • Page 41: Led Lighting (Optional Depending On The Models)

    e) The damper is fitted with 2 screws and is con- nected to the electric wiring by means of a 4-pole connector. 8.3.2 LED lighting (optional depending on the models) To gain access to the LED board, perform the following operations: a) Remove the LED cover releasing the 2 side b) Remove the LED electronic board releasing the hooks.

  • Page 42: Troubleshooting

    9 TROUBLESHOOTING Warning: Unplug the appliance before operating. 9.1 Excessive ice formation on the battery : If the rubber valve remains open, the humid air outside the freezer compartment is ducted inside and it accu- mulates too much ice on the battery. The valve remains open if there are foreign bodies or if it looses elasticity;...

  • Page 43: Display Symbols

    10 DISPLAY SYMBOLS 10.1 Cooler compartment DISPLAY DIGITS DESCRIPTION It indicates the cooler temperature with normal function NOT FLASHING [from +2 to +8] It indicates the HOLIDAY function of the cooler compart- NOT FLASHING ment [15 °C] It indicates the malfunctioning of cooler air temperature NOT FLASHING sensor It indicates incompatibility between the electronic boards...
  • Page 44 10.2 Freezer compartment DISPLAY DIGITS DESCRIPTION It indicates the freezer temperature with normal function NOT FLASHING [from -15 to -24] It indicates the malfunctioning of freezer air temperature NOT FLASHING sensor It indicates incompatibility between the electronic boards NOT FLASHING Remedy: check the spare part nos.

This manual is also suitable for:

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