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NOFROST REFRIGERATORS WITH ELECTRONIC TIMER  

13/29

 

5.4 NTC SENSOR MALFUNCTIONING 

 
 
If during the normal functioning a NTC sensor failure occurs (the signal coming from the sensor is out of range, 
then: 

 

ƒ

  The appliance functions with a predefined cycle, by which the compressor is powered for 30 minutes 

and remains off for 45 minutes alternatively; 

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  The defrosting procedure starts every 14 hours. 

 
When the sensor returns to normal operation the above mentioned functions end. 
 

Characteristics of NTC sensor: 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for No Frost Refrigerator

Page 1: ...RATION ELECTROLUX HOME PRODUCTS S p A Publication no Spares Operations Italy 599 35 61 05 Corso Lino Zanussi 30 021218 I 33080 PORCIA PN ITALY ITZ SERVICE AA Fax 39 0434 394096 NOFROST REFRIGERATORS w...

Page 2: ...NOFROST REFRIGERATORS WITH ELECTRONIC TIMER 2 29...

Page 3: ...SENSOR MALFUNCTIONING 13 6 COMPONENTS 14 6 1 CONTROL PANEL 14 6 2 REFRIGERATOR COMPARTMENT 14 6 3 FREEZER COMPARTMENT 15 6 4 COMPRESSOR COMPARTMENT 16 6 5 ZCP TERMINAL BOARD 17 6 6 ELECTRONIC BOARD 1...

Page 4: ...NOFROST REFRIGERATORS WITH ELECTRONIC TIMER 4 29...

Page 5: ...0 pnc 925887 and 290 litres ex C11 pnc 925888 pnc Date Model Brand 92588670000 20021220 672 700 2 40032 Privileg 92588670100 20030606 CZC16 9FA Zanussi Electrolux 92588670300 20030321 ZEBF250W Zanussi...

Page 6: ...lb is located inside the flap and reacts both to the air temperature of the air coming out of nozzle 2 and to the air temperature inside the refrigerator compartment The air returns to the air compart...

Page 7: ...NOFROST REFRIGERATORS WITH ELECTRONIC TIMER 7 29 2 REFRIGERATION CIRCUIT Key 1 compressor 2 condenser 3 filter 4 capillary 5 heat exchanger 6 battery evaporator...

Page 8: ...rd of freezer compressor b brown 5 motor protector d white 9 stylus defrosting heater c blue 9a armoured defrosting heater e black 13 refrigerator lamp 15 light switch 24 battery fan 26 safety thermal...

Page 9: ...ard of freezer compressor b brown 5 motor protector d white 9 stylus defrosting heater c blue 9a armoured defrosting heater e black 13 refrigerator lamp 15 light switch 24 battery fan 26 safety therma...

Page 10: ...onic board By rotating clockwise the thermostat knob the green LED switches ON In NOFROST refrigerators the humidity inside the freezer or refrigerator compartments accumulates on the evaporator batte...

Page 11: ...activates the defrosting procedure 2 If the internal temperature is lower than the cut in temperature of the thermostat CUT IN when the power is restored the compressor functions in thermostatic cond...

Page 12: ...e the whole thermal energy is consumed in the defrosting process of the ice on the evaporator After 20 minutes the board detects every minute the signal of the defrosting process in order to determine...

Page 13: ...gnal coming from the sensor is out of range then The appliance functions with a predefined cycle by which the compressor is powered for 30 minutes and remains off for 45 minutes alternatively The defr...

Page 14: ...IC TIMER 14 29 6 COMPONENTS 6 1 CONTROL PANEL pilot light B thermostat knob T light button P 6 2 REFRIGERATOR COMPARTMENT flap C it allows to regulate the air flow coming from the freezer compartment...

Page 15: ...sistance Power Notes 925886xxx R134a 240 V 242 238 W 925886xxx R600a 240 V 213 see notes 271 W Total value of the 2 heating elements 925887xxx R134a 240 V 220 262 W 925887xxx R600a 240 V 207 see notes...

Page 16: ...GERATORS WITH ELECTRONIC TIMER 16 29 6 4 COMPRESSOR COMPARTMENT At the back of the appliance it is placed the ZCP terminal board which contains the electrical connections of the defrosting and fan hea...

Page 17: ...BOARD A electric wiring cable from the electronic board A1 fan line brown A2 neutral blue A3 defrosting heaters line black B defrosting heaters cable B1 neutral blue B2 defrosting heaters line brown C...

Page 18: ...powering and compressor control B J2 connector power fan components defrosting heaters and lamp C J3 J6 connector NTC sensor D J7 connector lamp switch ATTENTION the electronic board features a prote...

Page 19: ...TRONIC TIMER 19 29 VIEW OF THE ELECTRONIC BOARD WELDING SIDE Optional components A reed element B thermostat knob C SUPER button 1 compressor 2 free 3 line 4 neutral 1 lamp 2 neutral 3 neutral 4 defro...

Page 20: ...Buzzer Green LED Yellow LED Red LED Reed element SUPER button ERF1050 01 E A NO YES NO NO NO NO Pos min Pos max Cut in Cut out Cut in Cut out SUPER Temperature Type of thermal C C C C C A 4 6 5 4 25 5...

Page 21: ...1 ACCESS TO CONTROL PANEL To gain access to the control panel electronic board NTC sensor and light button perform the following operations 1 remove the 2 fixing screws to the hinges 2 remove the 2 f...

Page 22: ...NOFROST REFRIGERATORS WITH ELECTRONIC TIMER 22 29 4 insert the screwdriver pushing the hook teeth of the control support to the top 5 extract the control support forward...

Page 23: ...TH ELECTRONIC TIMER 23 29 7 2 ACCESS TO REFRIGERATOR COMPARTMENT To access to the flap remove the caps which cover the two screws remove the two screws The NTC sensor is inserted into the back side of...

Page 24: ...ery The evaporator battery F is hooked to the conveyor K by means of two side clips L and three hooks which can be removed by a screwdriver placed on the bottom N Thermal overload cut outs The two 8 C...

Page 25: ...ating elements and thermal overload cut outs assembly The defrosting heaters are inserted into the wings and hooked to the battery by means of three clamps J to replace them release the clamps with a...

Page 26: ...battery capillary R pipes and battery return pipe S and in the welding of cylinder T for the R600a version 8 2 EXCESSIVE ICE ON THE BATTERY If the rubber valve remains open the humid air outside the...

Page 27: ...reeze the battery then unplug the appliance detach the heaters connectors and check with the tester the correct resistance value to the connector clamps If the value of the resistances does not corres...

Page 28: ...Rotate the thermostat knob to ON position 5 or to a position between min and max At this point the electronic board check the thermal cut outs all LEDs flash for 5 seconds then if there are no anomali...

Page 29: ...GERATORS WITH ELECTRONIC TIMER 29 29 Available time ON Thermostat knob OFF open Door closed ON Defrosting phase OFF ON Green Led OFF Key T 15 seconds t 5 seconds to check thermal cut outs F standard f...

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