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Summary of Contents for Kuppersbusch IKF 209-4
- Page 1 Built-in Refrigerator with Fresh Compartment IKF 209-4 IKF 249-4...
- Page 2 Service Manual: H8-420-02-02 Responsible: K.-H. Hiby Küppersbusch Vertriebsges. mbH Phone: (0209) 401-732 Kundendienst Fax: (0209) 401-743 Postfach 100 132 Date: 01.07.1999 45801 Gelsenkirchen...
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Page 3: Table Of Contents
Service Manual IKF 209-4/IKF 249-4 Contents 1. Refrigerant circuit..................4 2. Electronic section..................5 Design of the electronic section ............5 Equipment features ................5 Wiring diagram .................6 Function activation ................6 Influence of outside temperature............9 New power supply module .............10 Power failure protection..............10 3. FRC fan ....................10 4. -
Page 4: Refrigerant Circuit
Service Manual IKF 209-4/IKF 249-4 1. Refrigerant circuit throttle FZC section position 0 valve position 1 collector FC section air sensor FRC section condenser air sensor compressor For internal use only... -
Page 5: Electronic Section
Service Manual IKF 209-4/IKF 249-4 2. Electronic section 2.1 Design of the electronic section Hardware: The electronic section has a serial interface. The connections are accessible via an edge connector. The connection is located on the left-hand side of the control panel, sealed by a plastic cover. -
Page 6: Wiring Diagram
Service Manual IKF 209-4/IKF 249-4 2.3 Wiring diagram L (+) compressor FRC fan FRCS valve 1,0 µF 40 Ohm FC heater light (15W) power supply module FRCS - Fresh compartment sensor - Fridge compartment sensor - Fresh compartment - Fridge compartment - Freezer compartment 2.4 Function activation... - Page 7 Service Manual IKF 209-4/IKF 249-4 FRC temperature adjustment To make a fine adjustment of the FRC temperature, the customer has a relatively simple possibility of changing the FRC target temperature. If the FC temperature setting button is pressed, the fridge is on and the button is kept depressed for 2 sec., the display goes to the “FRC temperature adjustment...
- Page 8 Service Manual IKF 209-4/IKF 249-4 During the FRC defrosting phase and 100 min. ± 20 min. after the FRC defrosting phase, the FC temperature display is maintained. Example: Target temp. + offset temp. + warm tolerance = target range upper limit 6°C...
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Page 9: Influence Of Outside Temperature
Service Manual IKF 209-4/IKF 249-4 FRC display (cold + fresh) The FRC display comes on when the fridge is switched on. FZC display The FZC display comes on when the fridge is switched on. Normal control mode FC If the fridge compartment needs to be colder, only the solenoid valve is activated. -
Page 10: New Power Supply Module
Service Manual IKF 209-4/IKF 249-4 2.6 New power supply module Previous appliances had a so-called RC power supply unit which was characterised by its relatively simple and reasonably priced design. With this electronic system, however, difficulties arise if the electronics are operated with a converter-powered mains the electronics are operated with soft-voltage mains. -
Page 11: Solenoid Valve
Service Manual IKF 209-4/IKF 249-4 4. Solenoid valve Bistable valve, R = 1650 Ω Activation with 4 identical half waves. When the compressor is running, this activation signal is emitted every 60 seconds; with the compressor switched off, it is only emitted for changeover. -
Page 12: Defrosting
Service Manual IKF 209-4/IKF 249-4 6. Defrosting FC defrosting No special defrosting is provided for the FC. Defrosting takes place with the FRC. FRC defrosting If the FRCS is colder than 6°C when the appliance is switched on for the first time, defrosting of the FRC is initiated after 24 hours. -
Page 13: Ntc Sensor
Service Manual IKF 209-4/IKF 249-4 7. NTC sensor The previous plug-in and directly accessible air sensor has been replaced by a permanently connected air sensor. It is now considerably better protected against moisture by a plastic cover as the moisture can no longer act directly on the sensor. -
Page 14: Fc Door Function
Service Manual IKF 209-4/IKF 249-4 8. FC door function Definition: = High level at the µC input Closed FC door = Low level at the µC input Open FC door Internal fan The FRC internal fan is switched off when the FC door is opened. If the FC door is closed, the FRC internal fan is activated for 30 sec. -
Page 15: Start-Up Program
Service Manual IKF 209-4/IKF 249-4 10. Start-up program The start-up program becomes active when, at the time the appliance is started for the first time, all temperature sensors, apart from the outside temperature sen- sor, measure a value of between +12°C and +45°C. The outside temperature sensor must not be defective (-20°C <...
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