Service manual
Contents
1. Defrosting after 1 nours after the compressor cut out or if compressor s ON after 2 5 hours max Is the time less than 14 hours Defrosting after the compressor cut out or if compressor is ON after 2 5 hours max FROST FREE CHEST FREEZER with ERF1050 electronic 7 16 ohm 100000 E Electrolux Service manual COLD gt MM EA m Szerviz s vev szolg lat 5 4 SUPER FREEZING Pushing the SUPER button therefore activates the SUPER function e The yellow LED corresponding to the SUPER function is on e he compressor functions in thermostatic conditions and not continuously as the thermostat knob were in max position for a duration of about 52 hours and then it deactivates automatically e lf the button is pressed again the SUPER function is deactivated e he corresponding yellow LED is switched off e he compressor functions in thermostatic conditions The defrosting can occur with the SUPER function on 5 5 NTC SENSOR MALFUNCTIONING Fault alarm Flashing red light and static green light illuminated If during the normal functioning a NTC sensor failure occurs the signal coming from the sensor is out of range then D The appliance functions with a predefined cycle by which the compressor is powered for 30 minutes and remains off for 45 minutes alternatively D The defrosting procedure starts every 14 hours When the sensor returns to normal operation the above mentioned functions en2. 5 OPERATION 5 1 NORMAL When the thermostat knob is on OFF position it means that PD the compressor is off D all Leds are off D the electronic board is powered 220 240V 50Hz Warning the electronic board is powered with a 220 240V 50Hz voltage even if the thermostat knob is on OFF position Therefore disconnect the appliance from the electric power before operating with the electronic board By rotating clockwise the thermostat knob the green LED switches ON In FROST FREE chest freezer the humidity inside the freezer compartments accumulates on the evaporator battery thanks to the air circulation thus preventing the formation of frost on food During normal operation time the electronic board powers the compressor and the fan circuits The operation time which corresponds to the interval between the following defrosting lasts about 14 hours with normal opening of the door it can last up to 71 hours if the door is never opened 5 2 NORMAL OPERATION 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 cut in temperature of the thermostat 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 act
3. 13 9 ACCESSABILITY ee ERAN RE 14 10 AGGESS ABIL TT MD EE 15 11 LEI RR dE Ou ERR EE 16 FROST FREE CHEST FREEZER with ERF1050 electronic 2 16 E Electrolux Service manual COLD Szerviz s vev szolg lat 1 INTRODUCTION Consumer segmentation research reveals particular consumer problems relating to the use of chest freezers The task of defrosting is seen as one of the key problems Solution chest freezer with automatically defrosting FROST FREE The biggest technical problem How is possible to ensure the equal flow of cold air equal temperature in all part of the freezer area This manual describes the Word No 1 FROST FREE CHEST FREEZER models WITH ELECTRONIC TIMER ERF1050 2 WORKING IDEA AIR DISRITBUTION A fan near battery type evaporator moves the air in the freezer area The cold air gets to the air channels of the lid and distributes via its holes to all storing area H E E E E E CCA A E EI Fat F Air channel in the lid fan evaporator SUCTION The return airflow is through a vent in the cabinet s false floor left hand side and up to the base of the evaporator again The temperature measuring sensor NTC is on the way of sucked air Ee 5 SS SEI ad Place of NTC The condenser is the conventional skin type mounted around the inside of the casing FROST FREE CHEST FREEZER with ERF1050 electronic 3 16 E Electrolux Service manual gt MM EA
4. Now you can put them in to the service door in opposite order FROST FREE CHEST FREEZER with ERF1050 electronic 15 4 Electrolux Service manual COLD Szerviz s vev szolg lat 11 ACCESSABILITY LAMP SWITCH 1 Remove the lamp screen 2 Screw out the lamp housing screws Lamp switch 3 Now you can take out the lamp switch FROST FREE CHEST FREEZER with ERF1050 electronic 16
5. E Electrolux Service manual Szerviz s vev szolg lat COLD FROST FREE ELECTROLUX LEHEL Kft Publication no CHEST FREEZER Customer Care and Service 599 371 214 With ERF1050 Budapest Erzs bet kir lyn tja 87 LA HUE electronic HUNGARY H 1142 06 01 2005 Fax 36 1 221 9866 FROST FREE CHEST FREEZER with ERF1050 electronic 1 16 E Electrolux Service manual Szerviz s vev szolg lat COLD CONTENTS 1 INTRODUGT Te 3 ZRVISILIAVICIBT 3 AIR DISRITBUTION sese mI mnm emm nmn nnnm a nn nenne rere ret renti ree trei rennen nnns 3 4910 0 E 3 3 REFRIGERATION CIRCUIT 0 ccccccceccecteceecceccesseeceeccesseceucceccuceecceseeeeccucceccuccecdeccenseeterseeceuceesencceeeuecess 4 4 ELECTRIC UE e 5 OPERATION W 6 Sl OUI ME 6 5 2 NORMAL OPERATION WITH FIRST SWITCHING ON OR POWER FAILURE 6 9 DE FROST uu 6 S b UIPER FREE IN O WEE 8 5 5 NTC SENSOR MALFUNCTIONING ascii aaa dee eege dE dE dee 8 Seele RE 9 oe OO I8 NU 9 6 2 FREEZER COMPARTMENT eesse AEAEE AEREE 9 65 BEFRO T MERTE EE 10 SE EE FD EE 10 A E An 10 6 6 ELECTRONIC BOABRD EHF 1050 os itae necia iia 11 7 INDICATOR LIGHT MEANINGS AND FAULT CODES eee enne nnne nenne 12 8 MANUAL DEFROSTING PROCEDURE II I HI emmem ne nemen mre rre rere renren renner ne 12 8 1 FORCED DEFROSTING TIME SHEDULE acciona ri n hi da ocn ea cnn
6. EMPERATURE OVERLOAD CUT OUT Defrosting switch off with blue wires Safety with white wires N B changeable only together 6 5 LID LIGHT SWITCH This is a separate pendulum switch mounted next to the interior light in the lid The switch contacts close when the lid is opened to an angle greater than 45 This activates the following functions via the electronic control board e Interior lamp ON Air circulation fan OFF Lid open alarm after being open for 90 seconds Lid open activity is memorised by the electronic control system to determine the defrost cycle NOTE Because the evaporator is in the freezer area and the refrigerant is R600a the lamp holder and the switch must be EXPLOSION SAFE version FROST FREE CHEST FREEZER with ERF1050 electronic 10 16 E Electrolux Szerviz s vev szolg lat 6 6 ELECTRONIC BOARD ERF1050 VIEW OF THE ELECTRONIC BOARD WELDING SIDE Optional components A Green LED B thermostat knob C SUPER button D Red LED E Yellow LED J1 connector board powering and compressor control Service manual COLD TTTT A A TL i nilo E WW J2 connector power fan components defrosting heaters and lamp J6 connector NTC sensor J7 connector lamp switch J1 J2 1 neutral 1 fan 2 line 2 defrosting heaters 3 free 3 neutral 4 compressor 4 lamp 5 lamp Note the numbering there is in the connectors J6 1 NTC 2 NTC FRO
7. ST FREE CHEST FREEZER with ERF1050 electronic J7 1 free 2 free 3 lamp switch 4 lamp switch 11 16 E Electrolux Service manual COLD Szerviz s vev szolg lat 7 INDICATOR LIGHT MEANINGS AND FAULT CODES This series of frost free chest freezer incorporates flashing and static indicator light codes to indicate a fault with a specific component or operation as follows e Static red light and static green light illuminated Cabinet temperature incorrect above 8 C Flashing red light and static green light illuminated his indicates that the sensor is open circuit or the connecting plug may be in poor contact with the control PCB In this situation the cabinet reverts to a timed cycle of 30 minutes compressor run time and 45 minutes of compressor off time to protect the food within the cabinet plus a fixed defrost cycle every 14 hours Green light and yellow light flashing alternately This indicates that the electronic control is unable to sense the presence of the defrost heater circuit In other words the heater or thermal protectors could be open circuit or the connecting plugs may be in poor contact with the control PCB In this mode the defrosting cycle is done on a timed basis lasting for 1 hour 8 MANUAL DEFROSTING PROCEDURE To execute the testing and the service a manual defrosting procedure has been introduced that has to be carried out with cold internal temperatures this is to avo
8. d Characteristics of NTC sensor 90000 80000 70000 60000 90000 40000 30000 20000 1 aa 31 20 8 50668 32 0 8 53952 FAA 0a il PA A 8258 39 10 3 84851 40 30 9 30721 FROST FREE CHEST FREEZER with ERF1050 electronic 8 16 4 Electrolux Service manual COLD Szerviz s vev szolg lat 6 COMPONENTS 6 1 CONTROL PANEL Temperature Push button FAST FREEZE control control Alarm cancel D Electrolux Green mains Yellow fast freeze Red temperature ON indicator indicator warning indicator 6 2 FREEZER COMPARTMENT Fan Couple of thermal overload ee a Cut Out G ss ZA M E Evaporator battery mW TETTEEEEE ET p m IR empero TIREN EL dope pede PP PP PP PP RPP M png TIN i did D nnn DIR 99889 Nos huso ho dos dos Qu dee i LA A y 1414444444440 45d e We vam E did real Allee velekelekleekie kb MM bee dE Ib ehe eb eben A dos Po a pope yl SN tf mM NN B s r Am oe ke Au 4414441044 va tere he DO ae I e A TT Te ae ae eee eee b V ko ml sm m m m m Je af sb dl eil as FROST FREE CHEST FREEZER with ERF1050 electronic 9 16 4 Electrolux Service manual COLD ins Szerviz s vev szolg lat 6 3 DEFROST HEATER Both side of evaporator Water outlet channel heating too P 193W R 275 Ohm l cca 0 8A 6 4 OVERLOAD CUT OUT TYPE OF THERMAL CUT IN T
9. id the possible opening of the thermal protector of the defrosting heater To start the manual procedure ensure that e the electronic board is powered with thermostat knob ON position 5 or anyway in a position between 90 and 270 e the lid closed lamp switch is OFF mere Zl max Perform the 3 following operations 1 turn the thermostat knob to OFF position 2 open the lid more than 45 angle 4 times within 15 sec let pass at least 1 second between every opening closure 3 turn the thermostat knob to ON position 5 or anyway to a position between 90 and 270 At this point the electronic board verifies the thermal cut outs and all LEDs flash for 5 seconds then if there aren t any faults the manual defrosting phase starts If a fault occurs the LEDs continue to flash WARNING after placing the thermostat knob in OFF position operation 1 there are 15 seconds to perform the other 2 operations operation 2 3 in the correct sequence In case of error or incorrect execution of the operations before executing once again the manual defrosting procedure it is necessary to reset the standard functions switching off the power to the appliance detach the power cable The manual defrosting phase consists of defrosting heater ON green ON OFF LED on compressor and fan OFF In this case the electronic board performs the defrosting phase as a standard function and then continues to operate normall
10. ivates 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 conditions and after 5 hours the electronic board starts the defrosting procedure The electronic board activates anyway the defrosting procedure after 5 hours in case of both the first switching on and a power failure Warning if you turn the thermostat knob anti clockwise till the zero position OFF all the counters will be reset apart from those necessary to the manual defrosting procedure and once the thermostat knob has been turned clockwise in ON position the compressor will operate in thermostatic conditions 5 3 DEFROSTING All the humidity in the compartment accumulates on the evaporator which is the coldest part of the compartment periodically Every about 14 hours minimum with normal door openings till 71 hours if the door is never opened it is necessary to defrost the ice which forms on the battery Therefore the electronic board disconnects the circuit that powers the compressor and the fan and after checking for the defrosting heater it powers the defrosting heater for about 20 minutes minimum In case the defrosting heater is interrupted or its connector is disconnected green and yellow LEDs flashing alternately and the defrosting heater lasts 1 hour The heat generated by the defrosting heater does not affect the temperat
11. m Szerviz s vev szolg lat COLD 3 REFRIGERATION CIRCUIT al Key 1 compressor 2 condenser 3 filter 4 capillary 5 heat exchanger 6 battery evaporator FROST FREE CHEST FREEZER with ERF1050 electronic 4 16 E Electrolux Service manual COLD Szerviz s vev szolg lat 4 ELECTRIC WIRING T 15 56 qum i GEI 34 E C modul inner box Cabinet Compressor e ais WE A MIEN locals poo o mmm qm lao SEH I d i FAN hi nee i i L L el E J L al gt 1 e To o I BER D a m I l 26 E Wwe CG HER Heen white WEG an E reen ye low i NR lra A mm Em 3 A I Hot grey St 28 E SS KEEN n a I mm mnl m NI l i 27 l I ES D i arr 1 1 0 i i mu Y Y l 5 E Sisi amp iz iz g ees ee El SEH A A eee A A ini Dee A molar ages peg NR ee eg SE NK ege te fl gt e e i d r LI 1i d rt agas eo GO 99990 L A J SS SS Se eee ep p pre En i Ji J J BR 41 Electronic Thermostat ERF 1050 2 o ooo oL LLL D Key 3 compressor 5 motor protector 9 defrosting heater 13 lamp 15 light switch 24 battery fan 26 safety thermal switch 40 C 27 defrosting cut out switch 10 C 28 running capacitor only for the models which feature it 41 electronic thermostat assembly with timer 56 NTC sensor FROST FREE CHEST FREEZER with ERF1050 electronic 5 16 E Electrolux Service manual COLD Szerviz s vev szolg lat
12. ure of the freezer compartment or the temperature of the food packages since 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 the intervention of the defrosting cut out switch When the defrosting cut out switch intervenes the electronic control switches on the compressor and the fan again with a 5 minute delay If for any reason the defrosting cut out switch does not intervene and the temperature of the battery rises up to 40 C the defrosting heater will be switched off by the safety thermal switch FROST FREE CHEST FREEZER with ERF1050 electronic 6 16 E Electrolux Service manual gt Szerviz s vev szolg lat COLD Moreover if 1 hour after the defrosting start the safety thermal switches did not switch off the electronic board switches off anyway the defrosting heater and the process carries on d Flow chart for the defrosting management POWER ON Defrosting after 5 hours after the compressor cut out or if the compressor is ON after 2 5 hours max ls cooler or freezer door open see note MO Defrosting after 14 hours after the Defrosting after 30 hours after the compressor cut out or if compressor compressor cut out or if the s ON after 2 5 hours max compressor is ON after 2 5 hours max Cooler or freezer door open see note
13. y FROST FREE CHEST FREEZER with ERF1050 electronic 12 E Electrolux Service manual Szerviz s vev szolg lat COLD 8 1 FORCED DEFROSTING TIME SHEDULE T AN A Thermostat knob position III CTT poston TO ree F ON Defrosting heater AO Jl ER A Green LED A OUT Yellow LED OFF Key T 15 seconds t 5 seconds to check thermal protections F standard function FROST FREE CHEST FREEZER with ERF1050 electronic 13 4 Electrolux Service manual COLD Szerviz s vev szolg lat 9 ACCESSABILITY COLD MODULE Ll D DU WW emm 1 Open the lid 2 Remove the FF basket pull out from the fixing clip 3 Take away the bottom air channel 4 Pull out the corner air channel fixing pin 7 Remove the corner air channel 8 Take away the evap cover fixing screws FROST FREE CHEST FREEZER with ERF1050 electronic 14 4 Electrolux Service manual COLD Szerviz s vev szolg lat there is the NTC sensor alba a 11117 ibe whee ji aa MALLEM IA LITT 40 BT Fee 1 et ta A W IT TANAR we PERA K NT ILLI N ETIN il penne 9 Bend down the evap cover 10 Now the defrost heating is changeable 10 ACCESSABILITY LID The service lid is supplied without air inlet and outlets and ice cube maker holder In case of lid changing they have been transferred from old to the new one 2 Take away the air inlet 3 Take away the air outlets 4 Remove the ice cube maker holders
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