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Summary of Contents for Kuppersbusch IKEF 248-7
- Page 1 Refrigerator IKEF 248-7 IKEF 249-6 IKEF 249-7...
- Page 2 Service Manual: H8-71-07 Responsible: U. Laarmann KÜPPERSBUSCH HAUSGERÄTE AG E-mail: uwe.laarmann@kueppersbusch.de Phone: (0209) 401-732 Kundendienst Fax: (0209) 401-743 Postfach 100 132 Date: 08.12.2008 45801 Gelsenkirchen...
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Page 3: Table Of Contents
Service Manual Contents Safety instructions ......................4 Repair instructions ......................5 Operation......................... 6 Panel ........................6 Main switch......................6 Refrigerator section temperature adjuster ............. 6 Temperature setting range ..................6 Keep-fresh cooling section temperature setting range .......... 6 Refrigerator section Super button ................. 7 Components........................ -
Page 4: Safety Instructions
Service Manual Safety instructions Danger! Repairs may only be carried out by a qualified electrician! Improper repairs can be extremely dangerous for the user. It is essential that you observe the following instructions in order to prevent electric shocks: • The casing and the frame may be live in the event of faults! •... -
Page 5: Repair Instructions
Service Manual Repair instructions • Never attempt to carry out repairs by “randomly replacing” components! • Always proceed systematically and observe the technical documentation that goes with the appli- ance! • Electronic circuit boards are generally not repaired; instead they are completely replaced with original spare parts. -
Page 6: Operation
Service Manual Operation Panel 1. Temperature display (only lights up when the outer door is open) 2. Keep-fresh cooling section operation display (only lights up when the outer door is open) 3. Super mode / freezer section operation display (only lights up when the outer door is open) 4. -
Page 7: Refrigerator Section Super Button
Service Manual The display returns to the standard status when the temperature adjuster is not activated for 1min. The new setting is assumed after the display has returned to the standard status. The refrigerator section display has no minus sign. There is a risk of the temperature falling below 0°C (a 0 setting does not means 0°C). -
Page 8: Components
Service Manual Components Electronic controls The control system comprises two modules. The control and display module is located in the control pan- el. The input ports for the NTC sensor and the door contact are located on this module. The power supply module is located under a cover in the power room. -
Page 9: Functions
Service Manual Functions Cooling circuit The solenoid valve supplies the keep-fresh cooling section or the refrigerator section. The refrigerant is first of all lead through the freezer section and then into the keep-fresh cooling section or it is simultane- ously injected into the refrigerator section through the freezer section. The freezer section is always sup- plied when the compressor is in operation. -
Page 10: Start-Up Program
Service Manual Start-up program The start-up program is activated when the sensor temperatures (except for the room sensor) are all in the range of 10°C to 45°C when the refrigerator is switched on. The room sensor may not fall below -20°C and not exceed +45°C. -
Page 11: Refrigerator Section Super Program
Service Manual Refrigerator section Super program The Super cooling function is started with the Super button. The Super LED lights up and the refrigerator section is operated at a target temperature of 2°C. After 24h or when the temperature adjuster has been pressed again, the appliance will return to normal operation. -
Page 12: Repairs
Service Manual Repairs Capillary tube The capillary tube of the keep-fresh cooling section is marked yellow. If a capillary tube has broken off direct at the point where it is lead into the suction pipe, it can be repaired with two NTR lokring connections (spare-part no. -
Page 13: Trouble Shooting
Service Manual Trouble shooting NTC fault The resistance readings of a sensor are converted into temperatures by the electronics unit. A sensor is recognised as being defect by the sensor when the temperatures exceed specified temper- ature limits. Irrespective of the sensor function, the electronic unit puts the defect sensor into a certain operating status. -
Page 14: Technical Data
Service Manual Technical data Sensor readings Temp. °C R kOhm Temp. °C R kOhm Temp. °C R kOhm Temp. °C R kOhm 169.1 45.87 14.75 5.46 158.19 43.31 14.03 5.22 149.06 40.92 13.35 4.99 138.66 38.67 12.69 4.78 129.93 36.49 12.07 4.58 121.75...
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