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1. Service Manual Edition New Electronic Cold Platform 2005 2005 03 25 Language English SH N DI BAVA AVVISI 07 Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER SH N DI BAVA AVVISI Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 00 Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER P x wv Jg 24 e wy N E M r O 3 D gt O UI a O SW O X LU Edition Language 2005 03 25 English New Electronic Cold Platform 2005 Service Manual
2. I GRIGIO GRAY m m n x v n m v ES OV18 OYIN AN OYIN z AYONHIdNS OLLODSNYD CC ke I 0 VG4HDS INOISSINNOD Yow OWN E Ven Green 6r zr or ar le i I G et ai SS a SE A gt SS i JAIS DNIHICTOS C CH IYONHIANS OLLODSNYI TET I JUNLVATVS OLVI xe VG3H S 3NOISSINNOD _ D i 0 IO SS 5 fl e E ca El 0 OSSVd OSSVd rye Yovid OWN Y3dINYO 1Y SNOISSINNOD ammon LE 9 IO 9 Z HE g O IOI 0 Eesen lo Ped 2 Q BS a IYOIYIANS OLLOISNYI CI ver O YC3HDS INOISSINNOI a eee 20 m n Sp Go 9 Cc a o C Th lt l Z ir 9 S ans d ai z 0 CITE 0 E et Se de SE Seen Si WV OS Oile 9NIYIM Language English AYOWAdNS OLLODSNYI YaJHDS INOISSINNOI S D H 10 SO JYolYJdNS OLLODSNYD A VGSHDS ANOISSANNOD OSSVd OSSVd Yov 1d ON YIdNVO 1V INOISSSANNOD IDIAM OONVIE 3N19 N19 JYONHIANS OLLODSNYI Inia nia VO2H 3 INOISSINNOI ana New Electronic Cold Platform 2005 Service Manual Indesit Company Indesit Company UI lt o g O g Z BLU BLUE BIANCO WHITE MARRONE BROWN NERO BLACK MARRONE BROWN Vi N Ss Si NNNN NIN NIN BIANCO
3. Ambient NTC sensor UI Check efficiency of contacts of PCB connector J11 Check NTC sensor ensuring that the impedance value read on pins 5 and 6 of wiring connector J11 is compatible with the values in the temperature impedance correlation table also heat the sensor by holding it with your hand where possible and checking the change in the impedance value Renew PCB FREEZER Evaporator NTC sensor open short circuit New Electronic Cold Platform 2005 Check efficiency of contacts of PCB connector J11 Check NTC sensor ensuring that the impedance value read on pins 1 and 2 of wiring connector J11 is compatible with the values in the temperature impedance correlation table also heat the sensor by holding it with your hand where possible and checking the change in the impedance value Renew PCB Edition Language 2005 03 25 English u Q lt D 0 0 lt 92 Indesit Company 5 5 TROUBLESHOOTING PROBLEM ANALYSIS Fails to switch on Check voltage on socket outlet Check power cord Compressor fails to start Check continuity of windings Check operation of Klixon relay Faulty PCB Appliance set to OFF Compressor runs but ap pliance fails to cool Compressor is cold check refrigerant charge Compressor is very hot Check for traces of oil or refrigerant circuit is blocked Check for possible faulty compressor Compressor unable to start Faulty Klixon re
4. Z O lt na Ti L L 22 Indesit Company Long periods of activity if the compressor runs for a time greater than a value defined in the EEPROM memory it is switched off even in the presence of a cooling demand from either or both compartments This feature is designed to protect the compressor Pause after defrost at the end of every defrost cycle the compressor observes a number of protection minutes parameterised in the EEPROM memory to allow the defrost water to drain completely DEFROST HEATING ELEMENTS AND DRIP TRAY Connection of the defrost and drip tray heating elements occurs when a defrost cycle is required this event is controlled by the PCB by means of a procedure that considers that total compressor run time since the last defrost cycle the duration of the last defrost cycle and the duration of door open times The purpose of the defrost heating element is to melt any ice on the evaporating coil This ice compromises the heat exchange between the evaporator and the air reducing the refrigeration properties in the two compart ments of the appliance The drip tray heating element melts any ice that detaches from the evaporator and falls into the drip tray and also prevents blockage of the tube that transfers defrost water from the drip tray to the drain pipe The defrost and drip tray heating elements are connected in parallel and controlled by the PCB When these heating elements are switched on the compressor
5. i oi IZ S it a SEES PO v AE ZE A _ ER _ gt SSS 20 21 wae LC e g Q P x S pr dl Edition Language 2005 03 25 English O 3 D gt O UI a O a A X LU 00 Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER
6. Indesit Company SERVICE MANUAL New Electronic Cold Platform 2005 All the parts included in this document are the property of Indesit Company S p A All rights reserved This document and the information it contains are supplied without liability for possi ble errors or omissions no part of this document can be reproduced used or copied without written permission or without being authorised by the terms of a contract clause Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company CONTENTS OF THE MANUAL NOTE FOR THE ENGINEER This manual is a supporting document for technical personnel lt contains a description of the various product types the general operating principle and indications concerning assistance Technical personnel should anyway consult the specific model on Servicen www servicenet indesitcompany com to access data and updates of electrical diagrams techni cal bulletins and spare parts Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company 1 PRODUCTTYPE 4 6 Key 4 nterface 4 Energy Label 6 2 OPERATING LOGIC 7 29 Instructions for settings and operation 7 25 Thermodynamics 26 29 3 COMPONENTS 30 38 WIRING DIAGRAMS 39 47 Main PCB circuit diagram 39 41 Sensors diagram 42 46 Freezer wiring diagram 47 5 ASSISTANCE 48 63 Demo Mode 48 Auto Test Testing Running in 48 Faults and
7. an audible signal is emitted and the fridge lamp flashes at regular intervals Close the door to reset the alarm Freezer Compartment Temperature Alarm There are two types of alarms that can be generated if the freezer compartment temperature rises exces sively Alarm A1 In this case it is still possible to recover the food in the freezer by cooking it immediately and either consum ing it or re freezing it once cooked LEDs 3 and 5 flash on the appliance control panel to indicate the presence of the alarm if the refrigerator is equipped with the Digit interface the message A1 is displayed on the freezer temperature display Alarm A2 In this case the food in the freezer compartment must be discarded LEDs 3 4 and 5 flash on the appliance control panel to indicate the presence of the alarm if the refrigerator is equipped with the Digit interface the message A2 is displayed on the freezer temperature display At the same time an audible signal is emitted by the beeper during both alarm modes Service Manual Edition New Electronic Cold Platform 2005 2005 03 25 Language English Z 0 lt na Ti L L 13 Indesit Company In alarm status the appliance forces operation utilising specific On Off parameters that control the tem perature in the freezer compartment at specific values depending on the type of alarm To reset the alarm and restore normal operation the appliance must be set to LOGICAL OFF freezer knob set
8. 3 Pull the control panel pressure fit and remove 1 Remove plastic cover from both sides of the re the temperature control knob frigerator 2 Unscrew the two screws one for each side re sponsible for securing the control panel 4 Disconnect the PCB terminals u lt D T 0 lt Removing fridge freezer refrigerator compartment components 1 Remove fridge compartment shelves 2 Remove damper temperature adjustment knob Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company 3 Remove plastic cover from light fixture 5 Pull multiflow unit causing it to slide downwards by a couple of centimetres Yo 7 6 Disconnect terminals from lamp holder 4 Unscrew the screws at base of multiflow unit and screw inside lamp holder n Z 7 Extract pressure fit damper and remove with T your hands lt mg Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company Removing Fridge Freezer freezer compartment components 3 Insert a slotted screwdriver into the cover upper holes to unclip the cover 1 Remove the drawer from the freezer compartment 4 Pullcover forward 2 Unscrew the five cover screws 5 Detach the two clips one on each side Pull outwards u lt D T 0 lt Service Manual Edition Language New Electroni
9. Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER Service Manual Edition New Electronic Cold Platform 2005 2005 03 25 Language English SH N D BAVA AVVISI 1 Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English SH N D BAVA AVVISI Indesit Company 7 APPENDIX Sensors Temperature Table Temperatures degC Impedance Ohms 175199 63 129286 93 Temperatures degC Impedance Ohms 1480 91 96358 16 1256 39 72500 36 1070 31 55045 94 915 42 42156 97 78
10. ae m OR lt N O ki v gt QS a L Used in D 9 All products with mini PCB in control Panel Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 45 Indesit Company SENSOR DIAGRAM 5 380 2 Used in ah Fridge freezer appliances with special compartment Service Manual New Electronic Cold Platform 2005 ARIA VSP FREEZER n A lt L O UI lt o g O g Z 4 Sg D 9 Edition Language 2005 03 25 English 4p Indesit Company FREEZER COMPARTMENT FRONT SIDE ELECTRICAL WIRING DIAGRAM TF1 OOla Sia J RES GOCC ee A OG i C JIJ N Used in all No Frost appliances R1 Coil heating element R2 Drip tray heating element TF1 and TF2 Fusible links MVZF Freezer fan motor dl liana Cold Platform 2005 SE Language TF2 UI lt o g O g Z English d Indesit Company 5 ASSISTANCE 5 1 DEMO MODE The refrigerators shown in this manual are not equipped with the Demo Mode procedure 5 2 AUTO TEST The appliances feature an Autotest procedure that is able to assess correct operation of various loads and sensors Electronic Thermostat Autotest Activation of the Autotest procedure for this appliance must be performed by executing the following move ment
11. the ECO setting To deactivate the function simply turn one of the two knobs away from the ECO set ting The compressor starts in the presence of a cooling demand from either of the two compartments To optimise operation of the appliance there is a fixed time setting for operation of the freezer at the end of a refrigerator cooling demand by means of a switch over of the relative solenoid valve without having to disconnect the compressor Normally the ECO function adjustment corresponds ALARMS MANAGEMENT to the adjustment utilised to calculate power con sumption in compliance with European regulations The function cannot be activated in the presence of alarm signals The SUPER FREEZER and SUPER FRIDGE func tions can be activated when the ECO function is set These functions will assume priority over the ECO function The appliance returns to ECO function mode once the conditions are met to deactivate the priority procedure If one or more of the sensors is faulty the appliance will be controlled by the main PCB utilising alternative parameters In case of elec trical power failures the function will be reactivated automatically when power is restored Alarms serve to notify the user of specific conditions such as prolonged opening of fridge door excessively high temperature in freezer compartment Door Open Alarm If the fridge door is kept open for a time longer than that defined by a parameter set in EEPROM memory
12. the compressor is switched off and a defrost cycle is executed ending with the conditions already discussed for normal operation At the end of this defrost cycle the compressor is switched on again to complete the hours remaining for the SUPER FREEZE function 2 Prolonged refrigerator door open time in the case of a refrigerator door open time greater than a value parameterised in the EEPROM memory the system activates forced defrost cycles managed as per nor mal operation every number of hours parameterised in the EEPROM memory 3 Optimisation of power consumption connection of the defrost and drip tray heating elements is managed differently in the case of the conditions already described in the heading Compartments adjustment under the subheading Special Conditions in this condition defrost requests are activated only in accordance with the time that has elapsed since the last defrost cycle on the basis of a parameter stored in the EEPROM memory Defrosting is managed in the same manner as described above In order to check whether or not the defrost and drip tray heating elements are switched on check whether the drip tray is hot or whether any water due to the melting of ice on the evaporator coil is coming out of the drain tube FREEZER FAN The purpose of the freezer fan is to distribute the cold air produced by the evaporator coil inside the freezer compartment The freezer fan located in front of the evaporator
13. 1 and a fan located in the freezer compartment behind the com partments partition Fig 2 partments partition Fig 2 t i i ES Li gt Pac Ge Led ag od TE D A Pr EN bo The cold air that flows through the evaporator coil is routed to the Refrigerator compartment Fig 3 and the freezer compartment Fig 2 thereby causing the required cooling effect Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English di Indesit Company ki Ee i T S Sij The cold air is delivered from the vents serving the refrigerator compartment fig 4 and the freezer com partment fig 5 i Service Manual New Electronic Cold Platform 2005 Edition 2005 03 25 English Language 21 Indesit Company The thermodynamic cycle is closed thanks to the intake of refrigerator air Fig 3 and freezer air Fig 2 whereby the air heated after the thermal exchange is cooled and dehumidified by the coil The ice that accumulates on the coil is periodically removed by means of a system of heating elements and the result ing melt water is collected in the drip tray and routed through the drain tube to the compressor bowl from which it evaporates Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 28 Indesit Company Functional description of the refrigeran
14. 25 English 04 Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER O 3 D gt O UI a O SW O X LU ga Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 00 Indesit Company DIGITAL ELECTRONIC STATIC FRIDGE FREEZER Service Manual New Electronic Cold Platform 2005 m7 y d J i
15. Adjustment Refrigerator temperature control is managed by the PCB according to the temperature measured by the refrigerator air sensor in relation to the user settings on the interface If the temperature measured by the refrigerator air sensor is above the On threshold a cooling demand is activated thereby starting the compressor and the refrigerator fan and opening the damper on the contrary if the refrigerator air sen sor detects a temperature lower than the Off tem perature the cooling demand is deactivated Special Conditions Optimisation of power consumption Temperature adjustment follows different rules if the following condi tions occur Only ECO ON Temperature detected by PCB sensor on the PCB between two values parameterised in the EEPROM memory Time since the last time the door was opened greater than the parameters stored in the EEPROM memory Duration of last compressor On cycle less than a parameter stored in the EEPROM memory If these conditions are all met with every cooling demand from the refrigerator compartment because of the rise in the relative temperature above the set On threshold also the freezer compartment is forced to transmit a cooling demand Cancellation of this situation can occur if at least one of the previous conditions is no longer detected or because the condition persists for a time greater than the relative parameter set in the EEPROM memory LOADS MANAGEMENT Compressor
16. C Full no frost Grilles Playzone Lock Graffiti Final letters EU F etc Service Manual New Electronic Cold Platform 2005 2005 03 25 English Intended markets Edition Language Indesit Company 1 2 INTERFACE Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company 1 3 ENERGY LABEL Energy Label for products BAN or TAN Energy Manufacturer Indesit Model BAN e TAN More efficient Less efficlent Energy consumption kWh year based on standard fest results for 24 h Actual consumption will depend on how the appliance is used and where It ls located Fresh food volume Frozen food volume Noise dB A re 1 pW Further Information is contained In product brochures Norm EN 153 Refrigerator label Directive 20020UVEC Class A energy label Service Manual New Electronic Cold Platform 2005 Energy Label for products BAAN or TAAN Energy Manufacturer Indesit Model BAAN e TAAN More efficient A Less efficlent Energy consumption kWh year based on standard test results for 24 h Actual consumption will depend on how the appliance is used and where It ls located Fresh food volume Frozen food volume Noise dB A re 1 pW Further Information is contained In product brochures Norm EN 153 Refrigerator label Directive 200200EC Class A ene
17. Cold Platform 2005 2005 03 25 English d Indesit Company 3 Pull the multiflow unit causing it to slide down 5 Remove the damper temperature adjustment knob wards taking care not to damage the damper Sensor 6 Unscrew the two screws that secure the plastic cover and withdraw the cover by pushing it downwards E wr Po H J i y x f Pia D i al H D Ss fw EI d d 7 The damper features a pressure fit systems To remove it no tools are required u lt D 0 0 lt Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company Removing the water collection bowl 1 Use a screwdriver to detach the clips on both sides 2 After detaching the clips remove the compressor compartment ASSISTANCE Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company BASIC ELECTRONIC STATIC FRIDGE FREEZER OR EVOLUTION MODEL Removing the Display PCB 1 Remove plastic cover from both sides of the re frigerator 2 Unscrew the two screws one on each side re sponsible for securing the control panel ENCLASSES Removing the fan 2 Unscrew the two screws one on each side re sponsible for fixing the fan 1 Removethe refrigerator fan cover by pressing with P 9 your hand on one of the two sides and then ex tract it Mi
18. Q lt D 0 0 lt Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English d Indesit Company Removing the Lamp holder 1 Slide the plastic cover to the rear Removing the Main PCB 1 Undo the plastic clips securing the plastic Service Manual New Electronic Cold Platform 2005 3 Unscrew the screws on both sides of lamp holder Edition 2005 03 25 Language English a 3 ASSISTANCE Indesit Company e 4 Remove PCB from cover Removing the water collection bowl 1 Use a screwdriver to detach the clips on both 2 After detaching the clips remove the compressor compartment Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English u lt D T 0 lt Indesit Company 6 EXPLODED VIEWS DIGITAL ELECTRONIC STATIC FRIDGE FREEZER 397 O 3 D gt O UI a O SW O X LU Service Manual Edition Language New Electronic Cold Platform 2005 2005 03
19. The SUPER COOL function cannot be activated if either of the two alarm modes is active The function cannot be activated in the presence of alarm signals Activation of an alarm mode or switch ing off the appliance automatically causes this func tion to be deactivated This function is deactivated in the following cases pressing the relative button again automatically when the maximum activation time 24 hours is reached when the freezer air temperature sensor detects a temperature below a value parameterised in the EEPROM for a time parameterised in the memory When the function is deactivated the appliance resumes the operating mode defined previously by the user The ECO or HOLIDAY functions can be selected although they will only become operational when the SUPER FREEZER procedure has termi nated In the case of a faulty freezer air sensor this func tion is timer controlled In case of electrical power failures the function will be reactivated automatically when power is restored completing the remaining hours unless a tempera ture alarm occurs in this interval Edition Language 2005 03 25 English Z O lt na Ti L L 10 Indesit Company HOLIDAY FUNCTION In case of minimum use of the refrigerator compart ment this function makes it possible to store food while reducing power consumption to the minimum E g during holiday periods the freezer can remain full and the refrigerator empty
20. The function is activated by turning the refrigerator knob 2 to the HOLIDAY setting a double beep will sound to indicate that the function is active To deactivate the function move the knob away from the HOLIDAY position the appliance will emit a single beep and the appliance will resume normal operation The HOLIDAY function cannot be activated when ECO FUNCTION d 6 Y alarms are present Since the two functions are not compatible it is not possible to select the SUPER COOL or SUPER FREEZER functions if the knob is set to HOLIDAY If these two functions are already active when the HOLIDAY function is selected SU PER COOL and SUPER FREEZER will be termi nated normally after which the HOLIDAY function will start If one or more of the sensors is faulty the function will be controlled by the main PCB utilising alternative parameters In case of electrical power failures the function will be reactivated automatically when power is restored d Zi Le A This function allows storage of food with the lowest possible power consumption while ensuring excel lent results The function can be activated by turning the fridge 2 and freezer 6 knobs to the ECO setting To deactivate the function simply turn one of the two knobs away from the ECO setting The compressor starts in the presence of a cooling demand from either of the two compartments To optimise operation of the appliance there is a fixe
21. between two defrost cycles contributes to reducing the number of compressor run hours that must be accumulated before the next defrost cycle Specifically each fixed number of minutes in which the door is open as parameterised in the EEPROM memory serves to reduce by one unit the number of compressor run hours that must be accumulated before the next defrost cycle Finally the time that elapses between two defrost cycle can never be greater than a value parameterised in the EEPROM memory or lower than another value parameterised in the EEPROM the first strategy serves to guarantee a defrost cycle at least every number of preset hours while the second serves to avoid excessively frequent defrost cycles If the last defrost cycle was interrupted according to timer control the minimum time between defrost cycles is equal to another value parameterised in the EEPROM memory Special conditions in which a defrost cycle can occur 1 If the SUPER FREEZE function is activated there may be an immediate defrost cycle if the accumulated compressor run hours are more than a parameter set in the EEPROM memory otherwise the function proceeds as specified Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Z O lt na Ti L L 23 Indesit Company A defrost during the SUPER FREEZE function is possible specifically after a number of hours from the end of the function as parameterised in tte EEPROM memory
22. coil is switched on by the PCB The freezer fan is switched on after a time interval parameterised in the EEPROM memory from the time when the compressor was connected due to a freezer cooling demand On the contrary in the case of a refrigerator cooling demand the fan is started at e the same time as the compressor When the com ea pressor is switched off also the fan is switched off Pre defrost connection of the defrost and drip tray heating elements during a defrost cycle is preceded by activation of the freezer fan for a time interval parameterised in the EEPROM memory Post defrost the delay in starting of the freezer fan in the event that the compressor is started for the first time after a defrost cycle is a parameter stored in the EEPROM memory and is different from the delay time utilised during normal operation In order to check whether the freezer fan is running check for the presence of an air flow issued from the vents on the bottom of the freezer compartment DAMPER The purpose of the damper is to allow the cold air produced by the evaporator coil to be distributed in side the refrigerator compartment By means of the damper which is positioned in the upper zone on the base of the refrigerator compartment and by means of an air duct that connects the evaporator coil to the damper cold air from the evaporator coil is distributed in the refrigerator compartment by means of openings on the
23. demand 3 Pause after defrost at the end of the defrost cy cle the compressor observes a protection time parameterised in the EEPROM so that the water formed during the defrost can be completely drained DEFROST AND DRIP TRAY HEATING ELEMENTS There are two defrost heating elements connected in parallel and controlled by the Main PCB The defrost heating element which serves to melt any ice that has formed on the evaporator coil that could have a negative effect on the thermal exchange between the evaporator and surrounding air The drip tray heating element which is designed to melt any ice that detaches from the evaporator In addition the drip tray heating element prevents blockage of the pipe that transfers the water from the drip tray to the drain tube During the defrost cycle the compressor is switched FREEZER FAN OPERATION The freezer van is located in front of the evaporator coil and is designed to distribute the cold air pro duced by the evaporator coil uniformly inside the freezer compartment The freezer fan is managed by the PCB and is switched on off after a preset time interval that is parameterised in the EEPROM after a compressor start stop ON i I EE WEE i _ _ Ventola Freezer OFF Compressore The defrost procedure is preceded by activation of the fan for a time interval that is parameterised in the EEPROM memory Service Manual New Electronic Cold Platform 2005 off even in the
24. faults of this type there are various alternative operating modes that can be activated to allow the appliance to continue to function normally Normal operation of the appliance will resume after mains power has been disconnected and reconnected if the problem persists the appliance will resume alternative mode operation FRIDGE DOOR OPEN If the door remains open for a prolonged time period the fridge lamp flashes at regular intervals Close the door to reset the alarm FREEZER AIR SENSOR FAULT In the event of a fault of the freezer air sensor the appliance will no longer be able to execute thermo static control with the parameters set in the EEPROM memory The appliance will continue to function controlled by the main PCB which assumes timer control of op eration in accordance with the temperature set by the user and parameters stored in the EEPROM memory Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English y 7 NEON Indesit Company BASIC ELECTRONIC STATIC FRIDGE FREEZER AND EVOLUTION MODEL Ris a O 73 di NA i k 1 E ui E f a AH dll cl 1 SUPER FRIDGE button 2 FRIDGE knob 3 SUPER FRIDGE LED 4 Power indicator LED 5 SUPER FREEZER LED 6 FREEZER knob 7 SUPER FREEZER button 8 FRIDGE temperature display 7 segment 9 FREEZER temperature display 7 segment The appliance is Off when the freezer compartment kn
25. presence of a cooling demand from the freezer compartment The heating elements are switched off by means of a thermal protection closed when the appliance is cold and open when it is hot The parameters utilised to start the defrost cycle are as follows 1 Compressor ON time since last defrost cycle 2 Duration of last defrost cycle if the duration of the last defrost cycle was short the next defrost cycle will be longer and vice versa 3 Duration of doors open condition e L After the defrost cycle the fan starts after a time in terval following a compressor start also this interval is parameterised in the EEPROM memory thi Einterval is different from the interval programmed for normal operating conditions Edition Language English 2005 03 25 CHGERRATIObN Indesit Company FRIDGE LAMP OPERATION The refrigerator lamp is located inside the multiflow unit The Fridge Freezer appliance has one lamp while the Double Door appliance has two lamps The lamps are controlled by a triac on the PCB and switch on when the fridge door is open assuming the appliance is switched on If the door remains open for a time period that is greater than the time interval stored in the EEPROM memory the lamp will start flashing and continue until the door is closed FAULT MANAGEMENT The appliance is designed to recognise faults specifically those relative to the temperature sensors and the EEPROM memory For
26. 5 96 32554 20 677 30 29338 55 585 75 19872 17 508 32 15698 46 442 59 12487 7174 386 60 10000 00 338 74 8059 08 297 10 6534 72 262 38 5329 87 231 91 4371 72 205 53 3605 27 182 63 2988 68 162 70 2489 95 145 30 2084 43 130 06 Compressor 1753 04 116 70 Refrigerant GVY 57 AA ACC Capacity W 104 94 COP W W TWB 1360 MJS Tecumseh GVY 66 AA ACC TWB 1370 MJS Tecumseh NLX 10 KK2 Danfoss TWB 1370 MKS Tecumseh TWB 1374 MJS Tecumseh NLX 11 KK2 Service Manual New Electronic Cold Platform 2005 Danfoss Edition 2005 03 25 Language English x a Z u ni L lt 2 Indesit Company Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English
27. Company If the temperature measured by the freezer air sensor is above the On threshold a cooling demand is activated thereby starting the compressor on the contrary if the freezer air sensor detects a temperature lower than the Off temperature the cooling demand is deactivated Refrigerator Compartment Adjustment Refrigerator temperature control is managed by the PCB according to the temperature measured by the refrigerator air sensor in relation to the user settings on the interface If the temperature measured by the refrigerator air sensor is above the On threshold a cooling demand n is activated thereby starting the compressor and the refrigerator fan if presenti on the contrary if the refrigerator air sensor detects a temperature lower than the Off temperature the cooling demand is deac tivated LOADS MANAGEMENT Compressor Operation The compressor serves to compress the gas in the thermodynamic circuit in order to generate the nec essary cooling capacity to chill the appliance com partments The compressor is managed by the Main PCB with the aid of a relay and a triac that trips in parallel with the relay only at the time of compressor power on and power off to protect the relay from electrical arc ing when the contact is opened and closed other wise the compressor is powered exclusively via the relay when it is running The compressor is started whenever a cooling de mand is received In certain conditions
28. FUNCTION Cool In case of minimum use of the refrigerator compart ment this function makes it possible to store food while reducing power consumption to the minimum E g during holiday periods the freezer can remain full and the refrigerator empty The function is acti vated by turning the refrigerator knob 2 to the HOLIDAY setting a double beep will sound to indi Service Manual New Electronic Cold Platform 2005 ing large quantities of food should be activated 24h before placing the food in the compartment In this case LED 5 will flash for the first 24 h and then remain steadily illuminated for the second 24 h pe riod If the appliance is equipped with the Digit inter face the temperature of 35 C will be displayed on the 7 segment display until the function is deacti vated at which point the LED will extinguish and the value set on the freezer knob will be shown on the display The function cannot be activated in the presence of alarm signals Activation of an alarm mode or switch ing off the appliance automatically causes this func tion to be deactivated This mode can be deactivated by pressing the relative button again The function is deactivated automatically when the maximum time has elapsed 24 or 48 hours or in the case of 24 h mode once a given temperature has been reached and maintained for a time interval parameterised in the EEPROM memory The ECO or HOLIDAY functions can be selected alth
29. Operation The compressor serves to compress the gas in the thermodynamic circuit in order to generate the neces sary cooling capacity to chill the appliance compartments The compressor is managed by the Main PCB with the aid of a relay and a triac that trips in parallel with the relay only at the time of compressor power on and power off to protect the relay from electrical arcing when the contact is opened and closed otherwise the compressor is powered exclusively via the relay when it is running The compressor is started whenever a cooling demand is received from either of the two compartments When both compartments no longer require cooling the compressor will be switched off In certain conditions the compressor will remain stopped despite the presence cooling demands these situations are as follows Compressor protection the compressor switches on once a minimum safety time interval parameterised in the EEPROM has elapsed since the last power off thereby allowing the pressure of gas to reach a point of equilibrium in the refrigerant circuit The same minimum safety time is observed in the event of a mains power interruption voluntary or involuntary This compressor protection strategy is observed only after the product has been operating continuously for a number of hours defined in the memory This facilitates the execution of factory tests Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English
30. WHITE NERO BLACK GRIGIO RAY NERO LACK S NNNNNNUUUUUY UUUUUW ACIS DNIHICTOS FUNLVAIVS OLVI Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English d Indesit Company SENSOR DIAGRAM 1 40 lt lt OI lt O cc 2 S O e o lt a O lt S ES 3 3 O te I Used in oi L Fridge Freezer Appliance H 1750 a o gl da d D Fridge Freezer Appliance H 1850 l DQ Fridge Freezer Appliance H 2000 Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 4 Indesit Company SENSOR DIAGRAM 2 UE OH ag 3 IL 3 A di ill Ir ny i ZL i 9 7 o gt 00 Used in O o 9 Pa NF Fridge Freezer Appliance H 1875 NF Fridge Freezer Appliance H 2000 2 DI n A n n C QUOTA QUOTA B UI e CC g O g Z lt L O 2D O Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English A Indesit Company SENSOR DIAGRAM 3 B n T 09 N gt T 3 5 g lt lt T Q O 6 gt O Z CO gt CH D DI Used in Double Door Appliance H 1750 Double Door Appliance H 1850 Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 44 Indesit Company SENSOR DIAGRAM 4 BEN 40 200 S o N z J lt s a D O S CH
31. and the Alarm A1 Threshold alarm A1 is forced because the persistence of a temperature in this range for this period of time is anyway a symptom of faulty operation and constitutes a risk for the correct preservation of the food At the time of activation of alarm A1 also a time interval T3 is activated parameterised in the EEPROM after which if an alarm reset has not been executed alarm A2 is forced since in the situation of alarm A1 the freezer compartment is set to a temperature that may not be the same as the temperature selected by the user This time interval is reset also when power is restored after a mains power failure as T1 2 1 2 Hours Soglia A2 AJ J Sdi A 8 C T2 24 Hours Jt T1 120 Hours A Mm n se Soglia Check N B The time and temperature values shown in this graph are EEPROM parameters and as such they are subject to modification THERMOSTAT CONTROL The temperature adjustments in both the compartments are independent from each other and set individu ally by the relative knobs Freezer Compartment Adjustment Freezer temperature is managed by the PCB utilising the value detected by the freezer air sensor to switch the compressor on off The On Off threshold is detected by the EEPROM and it depends on the user setting on the interface Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Z O lt na Ti L O 14 Indesit
32. ble short cir cuits on the freezer compartment wiring junction box Renew heating element Renew PCB No power draw of defrost ing heating element Service Manual New Electronic Cold Platform 2005 Check efficiency of contacts on PCB connector J6 Check for continuity of the defrost heating element on pins 3 and 4 of con nector JK6 ensuring that the impedance value read is compatible with the value given in the relevant table Check for the correct connection of the defrost heating element and the drip tray heating element on the freezer compartment wiring junction box Check the correct impedance value on the defrost heating element across the heating element terminals Check that the fusible links are not open Renew defrost heating element Renew PCB Edition Language 2005 03 25 English d Indesit Company FAULT CAUSE CORRECTIVE ACTIONS Incorrect switching of sole noid valve Check efficiency of contacts on PCB connector J8 Check for impedance on wiring connector J8 pins 2 and 1 and ensure that the value is compatible with the value given in the relevant table Check correct switching of the solenoid valve Check with the compressor running that the solenoid valve switches when the refrigerator compart ment is set to OFF by means of the temperature control knob Renew solenoid valve Renew PCB File setup error EEPROM not programmed or faulty In the case of an original production PCB re
33. c Cold Platform 2005 2005 03 25 English Indesit Company 6 Disconnect fan terminals Removing double door appliance freezer compartment components 1 Remove small plastic cover 3 Pull cover 4 Unscrew the two screws holding the internal part of the cover at the point in which the fan is mounted 2 Insert a slotted screwdriver in both sides of the cover and detach G ges e s e A 5 Pull cover outwards n Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English ASSISTANCE Indesit Company 6 Detach fan connector To remove or refit simply apply pressure in the necessary direction To remove the cover of the freezer compartment air return vent simply in sert a slotted screwdriver in the outer part and a press upwards taking care you do not break off the fixing clips ke N B The freezer compartment air temperature sensor is attached to a specific location To remove the cover of the freezer compartment air return vent simply insert a slotted screwdriver in the outer part and press upwards taking care you do not break off the fixing clips Disassembling double door appliance fridge compartment 1 Detach the two lamp covers WW Q lt S D OI d 2 Unscrew the two screws that secure the multiflow unit to the interior wall of the refrigerator compartment Service Manual Edition Language New Electronic
34. counterclockwise to increase the temperature until reaching the minimum position when the re Service Manual New Electronic Cold Platform 2005 ment knob 2 is set to minimum the refrigerator compartment is Off To switch on the refrigerator compartment turn the knob clockwise away from the Minimum position to switch it off turn the knob counterclockwise to the Minimum position If the SUPER COOL function is active it will be automati cally deactivated by switching the refrigerator com partment off frigerator knob is set to minimum the refrigerator compartment will be switched off while setting the freezer knob to minimum switches off the entire appliance Language English Edition 2005 03 25 7 NEON Indesit Company SUPER COOL FUNCTION e Super Cool Activation of an alarm mode or switching off the ap pliance or only the refrigerator compartment auto matically causes this function to be deactivated Activation of the SUPER COOL function can be per formed by the user pressing button 1 in which case LED 3 will illuminate to confirm the function is ac tive the function is deactivated by the user pressing the button again or it will be deactivated automati cally at the end of the procedure number of cycles as defined in the EEPROM memory SUPER FREEZER FUNCTION RE Super freeze This function provides optimal freezing of food in the freezer compartment conser
35. ct connector J1 causing the relative contacts to short Check the motor terminal PCB any problems due to incorrect connection may cause short circuits Renew motor Renew PCB Compressor relay open Check efficiency of contacts on PCB connector J1 Check that there is an impedance value on wiring connector J1 between pins 3 and 2 that is compatible with the value given in the specific table Check that the compressor is not stopped due to overtemperature condi tions thermal cutout open Renew motor Renew PCB Faulty power PCB Renew PCB Freezer fan unit does not run Check efficiency of contacts on PCB connector J6 Check impedance on wiring connector J6 pins 2 and 1 ensuring that the value is compatible with the value given in the relevant table Check correct connection of the freezer fan on the freezer compartment wiring junction box Renew freezer fan unit Renew PCB Electronic damper does not open close Check efficiency of contacts on PCB connector J3 Check efficiency of the electronic damper connection to the foam embed ded connector behind the multiflow unit Renew electronic damper Renew PCB u Q lt L D 0 0 lt Short circuit of triac control ling defrost heating element Check efficiency of contacts on PCB connector J6 Check condition by checking for impedance on wiring connector J6 pins 3 and 4 Check connections of the defrost heating elements and possi
36. d time setting for operation of the freezer at the end of a refrigerator cooling demand this interval can vary in accordance with the temperature read by the Service Manual New Electronic Cold Platform 2005 freezer sensor Normally the ECO function adjust ment corresponds to the adjustment utilised to cal culate power consumption in compliance with Euro pean regulations The SUPER FREEZER and SU PER FRIDGE functions can be activated when the ECO function is set These functions will assume priority over the ECO function The appliance returns to ECO function mode once the conditions are met to deactivate the priority procedure If one or more of the sensors is faulty the appliance will be control led by the main PCB utilising alternative parameters In case of electrical power failures the function will be reactivated automatically when power is restored Edition Language 2005 03 25 English Z 0 lt na Ti L O 19 Indesit Company ALARMS MANAGEMENT Alarms serve to notify the user of specific conditions such as prolonged opening of fridge door excessive temperature in freezer compartment Door Open Alarm If the fridge door is kept open for a time longer than that defined by a parameter set in EEPROM memory an audible signal is emitted and the fridge lamp flashes at regular intervals Close the door to reset the alarm Freezer Compartment Temperature Alarm There are two types of alarms that can be ge
37. d sensors any faults will be signalled by flashing of the fridge lamp LL DA sE oe of om i Service Manual Edition New Electronic Cold Platform 2005 2005 03 25 English Indesit Company 5 2 FAULTS AND SOLUTIONS ECO m N Super Gi C freeze HOLIDAY L Fig 2 ein HOLIDAY Key 1 LED 1 2 LED 2 3 LED 3 4 DIGIT FR 4 DIGIT FZ The fault type can be signalled in various different ways 1 by means of the LEDs in the case of the basic interface see fig 1 2 by means of the LEDs and digits in the case of the Evolution interface see fig 2 Reading of faults shown by LEDs The control panel LEDs illuminate to show the fault in accordance with the following table the LEDs remain lit as long as the fault persists Em Flashing Frenn Peng oon ashing LED Fault Table MU Critical Faults _ _ 10Non critical Faults u Q lt H D T 0 lt ol o ml o Off Off On On On On ff The first 9 faults are critical the user will have to call service to repair the appliance the next 8 faults can be checked by a technical engineer by means of the autotest procedure Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English d Indesit Company Compressor relay sticking CORRECTIVE ACTIONS Check for water leaks that may affe
38. e damper enables cold air from the evaporator coil to cool the refrigerator compartment Temperature adjustment is performed in accordance with specific rules if the following conditions occur Temperature detected by PCB sensor on the board is between two values parameterised in the EEPROM memory The time that has elapsed from the last time the door was opened is greater than the relative pa rameter stored in the EEPROM memory The compressor power on time is lower than the parameter stored in the EEPROM Edition Language 2005 03 25 English Z O lt na ul L O Indesit Company switches on whenever a demand for cooling is received There are situations of cooling demand in which the compressor remains off These are as follows 1 Compressor protection the compressor switches on once a minimum safety time lag has elapsed since the last power off thereby allowing gas pressure to reach a point of equilibrium in the refrigerant circuit The same minimum safety time is observed in the event of a mains power inter ruption voluntary or involuntary This compres sor protection strategy is observed only after the product has been operating continuously for the number of hours defined in the EEPROM memory This facilitates the execution of factory tests 2 Long periods of activity if the compressor remains on for more than a value set in EEPROM memory it is switched off even in the presence of a cool ing
39. elative 7 segment display will show tempera ture 1 until deactivation of the function at which point the display will return to the temperature value set on the freezer knob The user can also activate the ECO or HOLIDAY functions which will become op erational as soon as the SUPER COOL function has been deactivated The SUPER COOL function can not be selected if the HOLIDAY function is active In case of electrical power failures the function is re sumed automatically when power is restored com pleting the remaining cycles except in the presence of a temperature alarm Edition Language 2005 03 25 English Z 0 lt na Ti L O 11 Indesit Company SUPER FREEZER FUNCTION rb SEAN ATA a This function provides optimal freezing of food in the freezer compartment conserving properties of tex ture and flavour Activating this function forces the compressor run continuously thereby obtaining maximum freezing power in the freezer compartment There are two modes SUPER FREEZE 24h which is used for freezing small quantities of food this func tion should ideally be activated immediately before before placing the food in the compartment The SUPER FREEZE function is activated by press ing button 7 this will cause LED 5 to illuminate to confirm that the function is active The second mode is SUPER FREEZE 48h which is activated by hold ing down button 7 this function is used for freez HOLIDAY
40. ervice Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company Fridge compartment Damper Cover n Z ul Z O ii 2 O O Multiflow unit Light Fixture Mechanical damper Mechanical damper sensor Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 36 Indesit Company Tol VIKON SNES Rear Components Key Compressor Compartment Compressor Water Bowl Filter Delivery Tube Return Tube Capillary tube N O 0 fF W N A Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company SPECIFICATIONS OF LOADS Dual state Load type Electrical specifications datasheet Control techniques Electrical characteristics measured Control techniques Electrical characteristics measured Control techniques Load type Electrical specifications datasheet drip tray evaporator coil Power W Control techniques Stepping Load type Electrical specifications datasheet Control techniques Load type Electrical specifications datasheet Control techniques Load type Electrical specifications datasheet Control techniques Service Manual New Electronic Cold Platform 2005 inductive Voltage V 220 240 Frequency Hz 50 60 Resistance min max W 1600 3750 10 at T 25 C Control is executed by transmittin
41. even though the compressor is running This occurs in the event that the fridge door is open In order to check that the refrigerator fan is functioning correctly door closed conditions must be simulated by applying a magnet Fridge Lamp Operation Housed in a light fixture the fridge lamp serves to illuminate the refrigerator compartment The lamp is controlled by a triac on the PCB and it switches on when the door is opened and switches off when it is closed If the door is kept open for more than a time interval parameterised on the PCB the lamp will flash until the door is closed Service Manual New Electronic Cold Platform 2005 Edition 2005 03 25 Language English OPERATION Indesit Company BASIC ELECTRONIC NO FROST FRIDGE FREEZER Key 1 SUPER FRIDGE button 2 FRIDGE knob 3 SUPER FRIDGE LED 4 Power indicator LED 5 SUPER FREEZER LED 6 FREEZER knob 7 SUPER FREEZER button Accensione Spegnimento del prodotto The appliance is Off when the freezer compartment knob 6 is set to Minimum To switch the appliance on turn the freezer knob clockwise away from the Minimum position To switch it off turn the knob counterclockwise to the Minimum position All active functions are deactivated when the appliance is switched off If the appliance is On and the refrigerator compart Turn the refrigerator knob 2 or freezer knob 6 clockwise to decrease the temperature or
42. g a finite number of positive or negative half waves of the voltage Voltage V 220 240 Frequency Hz 50 60 Resistance W Min max Power W 3 5 Control is executed by transmitting the entire mains voltage Voltage V 220 240 Frequency Hz 50 Resistance W 529 10 Min max Power W 3 1 16 Control is executed by transmitting the entire mains voltage COMPOMENTS resistive Voltage V 220V 240 Frequency Hz 50 Power W 30 10 Resistance W 1613 5 125 Resistance W 387 10 Control is executed by transmitting the entire mains voltage 2 phase stepper motor Voltage V 12V DC Frequency Hz 50 60Hz Current MA 60 Dual pole control resistive Voltage V 220 240 115 130 Frequency Hz 50 60 60 Power W 10 Power W 15 Power W 25 Control is executed by transmitting the entire mains voltage inductive Voltage V 220 240 Frequency Hz 50 60 Control is executed by transmitting the entire mains voltage Edition 2005 03 25 Language English SNVHDVIG 29NIHIM x DI Language English Zd dd diNVI dWV1 2005 03 25 Edition BLU BLUE BIANCO WHITE MARRONE BROWN NERO BLACK BLU BLUE ROSSO RED NERO BLACK MARRONE BROWN BLU BLUE D BIANCO WHITE GRIGIO GRAY NERO BLACK GRIGIO RAY BLU BLUE NERO LACK BLU BLUE
43. heating of the appliance Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Z O lt na Ti L L 20 Indesit Company Temperature control and alarm signalling are managed by means of three thresholds Check Threshold the control strategy becomes more intensive when this threshold is exceeded Threshold A1 when ex ceeded alarm A1 is activated Alarm threshold A2 when exceeded alarm A2 is activated The values of the three thresh olds are parameterised in the EEPROM memory If the control temperature exceeds the Check Threshold but does not exceed the A1 Alarm threshold a delay time T1 is activated parameterised in tte EEPROM before performing the next control to prevent the generation of alarm signals when the placement of large quantities of warm food in the freezer compart ment near the freezer air sensor causes unreliable transient temperature readings At the same time an other time interval T2 is activated parameterised on the EEPROM after which if the temperature is con stantly maintained between the Check Threshold and the Alarm A1 Threshold alarm A1 is forced because the persistence of a temperature in this range for this period of time is anyway a symptom of faulty operation and constitutes a risk for the correct preservation of the food At the time of activation of alarm A1 also a time interval T3 is activated parameterised in the EEPROM after which if an alarm rese
44. in the refrigerator compartment by alter ing the refrigerator On and Off set points in accord ance with parameters stored in the EEPROM memory Activating this function forces the fridge fan which starts after a time parameterised in the EEPROM memory to run continuously to obtain the maximum cooling capacity in the refrigerator compartment The SUPER COOL function cannot be activated if either of the two freezer temperature alarm conditions is active Activation of an alarm mode or switching off Service Manual New Electronic Cold Platform 2005 D is from 18 C to 26 C while refrigerator compart ment temperature is from 3 C to 8 C If either the refrigerator or freezer is switched off the display 7 segment will remain blank tor knob is set to minimum the refrigerator compart ment will be switched off while setting the freezer knob to minimum switches off the entire appliance the appliance or only the refrigerator compartment automatically causes this function to be deactivated Press button 1 to activate the function In the case of the basic interface LED 3 will illuminate confirm ing activation of the function Deactivation of the SUPER COOL function can be performed by the user pressing the relative button again or will occur automatically at the end of the procedure number of cycles as defined in the EEPROM memory If the appliance is equipped with the Digit interface the r
45. lay Faulty compressor Mains voltage very low Water under crisper draw ers Drain hole blocked Container or wrapping paper touching refrigeration wall Water on floor Condensate collection bowl broken Water drain tube incorrectly positioned Condensate collection bowl not in contact with compressor Compressor fails to stop Faulty thermostat Incorrectly positioned thermostat Unsuitable installation on electrical Klixon Door fails to close properly Refrigerant circuit insufficient charge or blocked Compressor fails to start Damaged compressor Check Thermostat PCB u O lt L D T 0 lt Door open alarm sounds continuously No magnet in door Faulty PCB Door is distorted Display switches off in termittently Check display cable Check display PCB For No Frost appliances the compartments are in sufficiently cold Evaporator coil clogged with ice Check fusible link Check heating elements For No Frost appliances the refrigerator compartment does not cool properly Chilled air suction fan motor Ice has formed in the duct between the refrigerator and freezer compartments Refrigerator compartment too cold food tends to freeze Service Manual New Electronic Cold Platform 2005 Check temperature sensors Edition 2005 03 25 Language English Ai Indesit Company 5 6 DISASSEMBLY Removing the Display PCB
46. multiflow unit Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Z O lt na Ti L O 24 Indesit Company Opening and closing of the damper are managed by the PCB through the activation of a triac on the board The damper is opened in the presence of a cooling demand from the refrigerator compartment and when the compressor is running When there is no cooling demand from the refrigerator compartment the damper is closed even though the compressor may continue to run to meet cooling demand from the freezer compartment Pre defrost connection of the defrost and drip tray heating elements during a defrost cycle is preceded by opening of the damper and activation of the freezer fan for a time interval parameterised in the EEPROM memory Post defrost the delay interval before opening the damper if the compressor is started for the first time after a defrost cycle is a parameter stored in the EEPROM memory Refrigerator Door there exists a condition wherein despite the fact that the compressor is running the damper is not kept open this is the case in which the refrigerator door is open in this condition the damper is closed even in the presence of a cooling demand from the refrigerator compartment and when the compressor is running The damper is opened again only when the fridge door is closed To check opening of the damper check whethe
47. nerated if the freezer compartment temperature rises exces sively Alarm A1 In this case it is still possible to recover the food in the freezer by cooking it immediately and either consum ing it or re freezing it once cooked LEDs 3 and 5 flash on the appliance control panel to indicate the presence of the alarm while a beeper signal is emitted at the same time Alarm A2 In this case the food in the freezer compartment must be discarded LEDs 3 4 and 5 flash on the appliance control panel to indicate the presence of the alarm while a beeper signal is emitted at the same time In alarm status the appliance inhibits all functions or adjustments to force a specific operating mode with specific On Off thresholds that set the freezer compartment temperature to given values in relation to the type of alarm A1 or A2 the new On Off thresholds for the two alarm types are parameterised in the EEPROM memory During alarm status forced defrost cycles are executed activated once the number of hours parameterised in the EEPROM memory have elapsed as in normal operation To reset the alarm and restore normal operation the appliance must be set to LOGICAL OFF freezer knob set to minimum The beeper can be muted by opening and closing the refrigerator door When alarm status is reset the timer controlled defrost cycles are deactivated but if the alarm reset occurs during a defrost cycle the alarm is reset but the current defrost cycle continue
48. new PCB and EEPROM In the case of replacement PCB and EEPROM check correct insertion of EEPROM in PCB socket No communication be tween display PCB and control PCB For LED interface PCB Check efficiency of contacts on PCB connector J13 Check continuity of connector J13 5 way and 7 way connectors of LED PCB Renew main PCB Renew display PCB For Digit interface PCB Check efficiency of contacts on PCB connector J13 Check continuity of connector J13 4 way interface PCB connector Renew main PCB Renew display PCB FRIDGE Evaporator NTC sensor open short circuit Renew PCB Faulty power PCB Renew PCB FRIDGE Air NTC sensor open short circuit Check efficiency of contacts of PCB connector J11 Check NTC sensor ensuring that the impedance value read on pins 3 and 4 of wiring connector J11 is compatible with the values in the temperature impedance correlation table also heat the sensor by holding it with your hand where possible and checking the change in the impedance value Renew PCB FREEZER Air NTC sensor open short circuit Check efficiency of contacts of PCB connector J11 Check NTC sensor ensuring that the impedance value read on pins 1 and 2 of wiring connector J11 is compatible with the values in the temperature impedance correlation table also heat the sensor by holding it with your hand where possible and checking the change in the impedance value Renew PCB Renew appliance
49. ob 6 is set to Minimum To switch the appliance on turn the freezer knob clockwise away from the Minimum position To switch it off turn the knob counterclockwise to the Minimum position All active functions are deacti vated when the appliance is switched off If the ap pliance is On and the refrigerator compartment knob Service Manual New Electronic Cold Platform 2005 2 is set to minimum the refrigerator compartment is Off To switch on the refrigerator compartment turn the knob clockwise away from the Minimum position to switch it off turn the knob counterclockwise to the Minimum position If the SUPER COOL function is active it will be automatically deactivated by switch ing the refrigerator compartment off Edition Language 2005 03 25 English CHGERRATION Indesit Company TEMPERATURE DISPLAYS 7 SEGMENT arpa O G A Q HOLIDAY lo The displays serve to show the user temperature setting for the refrigerator compartment and the freezer compartment in accordance with the posi tion of the knob Freezer compartment temperature TEMPERATURE SETTING 4 Turn the refrigerator knob 2 or freezer knob 6 clockwise to decrease the temperature or counterclockwise to increase the temperature until reaching the minimum position when the refrigera SUPER COOL FUNCTION Beek i ea HOLIDAY Cool This function allows optimal chilling of large quanti ties of food
50. on of the solenoid valve The solenoid valve is controlled in such a way as to route the cold refrigerant to the refrigerator or freezer compartment depending on the user settings of the temperature adjustment knobs thereby allowing full independence of cooling demands from the two com partments When the cooling demand is transmitted from the freezer compartment the thermodynamic circuit is closed by the solenoid valve thereby inten sifying cooling capacity in the freezer compartment When the cooling demand comes from the refrig erator compartment the thermodynamic circuit causes the fluid to evaporate first in the refrigerator evaporator and then to cool also the freezer com partment Service Manual New Electronic Cold Platform 2005 Edition Language 2005 03 25 English 29 Indesit Company 3 COMPONENTS ELECTRONIC THERMOSTAT NO FROST FRIDGE FREEZER Ep i niro EDTO116 3 Thermostat PCB Mechanical damper Fridge compartment Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English O7e VIKSI SNES Indesit Company a Rear Components Key 1 Compressor Compartment 2 Compressor 3 Water Bowl Service Manual New Electronic Cold Platform 2005 Light Fixture Freezer compartment air sensor ped bk a d a N im UI CONNETTO ELLI 4 Filter 5 Delivery Tube 6 Ret
51. ough they will only become operational when the SUPER FREEZER function has terminated In case of electrical power failures the function will be reactivated automatically when power is restored completing the remaining hours unless a tempera ture alarm occurs in this interval cate that the function is active To deactivate the function move the knob away from the HOLIDAY position the appliance will emit a single beep or switch off the refrigerator compartment or the entire appliance The HOLIDAY function cannot be acti vated when alarms are present Since the two func tions are not compatible it is not possible to select the SUPER COOL or SUPER FREEZER functions if the knob is set to HOLIDAY If these two functions are already active when the HOLIDAY function is selected SUPER COOL and SUPER FREEZER will be terminated normally after which the HOLIDAY function will start If one or more of the sensors is faulty the function will be controlled by the main PCB utilising alternative parameters In case of electrical power failures the function will be reactivated auto matically when power is restored Edition Language 2005 03 25 English Z O lt na Ti L O 12 Indesit Company ECO FUNCTION 1 e This function allows storage of food with the lowest possible power consumption while ensuring excel lent results The ECO function can be activated by turning the refrigerator 2 and freezer 6 knobs to
52. r there is an air flow from the vents on the base of the refrigerator compartment in the presence of an active cooling demand from the refrigerator compartment and simulating door closed conditions by applying a magnet To check closing of the damper check that there is no air flow from the vents on the multiflow unit on the base of the refrigerator compartment with the fridge door open and the freezer fan running FRIDGE LAMP OPERATION Housed in a light fixture the fridge lamp serves to illuminate the refrigerator compartment The lamp is controlled by a triac on the PCB and it switches on when the door is opened and switches off when it is closed If the door is kept open for more than a time interval parameterised on the PCB the lamp will flash until the door is closed STATISTICS MANAGEMENT There are several parameters recorded in the memory that serve to identify the behaviour of the user and the appliance The parameters are divided on a daily basis and recorded each week in rolling mode When the current day is stored in the memory data for the oldest date are deleted Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English OPpreERATION Indesit Company APPLIANCE THERMODYNAMICS Interior chilling performance of new No Frost appliance The refrigeration system of the new no frost refrigerator consists of a cooling circuit whose main elements are a vertical finned evaporator Fig
53. remains switched off even in presence of cooling de mands from either of the two compartments Deactivation of the heating elements is managed by the freezer evaporator sensor When the temperature detected by the evaporator sensor reaches the value parameterised in the EEPROM memory the defrost and drip tray heating elements are switched off A defrost cycle cannot last more than a given time parameterised in the EEPROM memory At the end of each defrost cycle the number of hours is calculated that the compressor needs to run before starting the next defrost cycle This calculation is performed on the basis of the duration of the defrost cycle that has just been terminated specifically if said duration is greater than an ideal value stored in the memory for each fixed number of extra minutes parameterised in the memory one hour is deducted from the ideal value of compressor run hours parameterised in the memory on the contrary if the duration is less than the ideal value for each fixed number of minutes below the ideal number an hour is added to the ideal value of compressor run hours This control makes it possible to anticipate the next defrost cycle if the defrost cycle that has just ended lasted too long and vice versa The duration of the defrost cycle can be related to the presence of ice on the evaporator coil because a long defrost cycle means that an excessive amount of ice has accumulated on the coil The duration of door open times
54. rgy label Edition Language 2005 03 25 English Indesit Company 2 PRODUCT TYPE The user interface is located on the fridge cabi net in Fridge Freezer models and on the freezer cabinet in Double Door models SWITCHING THE APPLIANCE OFF AND ON The appliance is switched Off when the knob is set to Minimum To switch on the appliance turn the knob clockwise away from the Minimum position appli ance OFF Turn the knob counterclockwise to the Minimum position to switch off the appliance TEMPERATURE ADJUSTMENT The freezer compartment temperature is adjusted by the electronic PCB To set a lower temperature turn the Knob clockwise turning the knob counterclockwise gives a higher temperature The refrigerator compartment temperature depends on the adjustment of the freezer compartment tempera COMPRESSOR OPERATION The compressor serves to compress the gas in the thermodynamic circuit in order to generate the nec essary cooling capacity to chill the appliance com partments The compressor is managed by the Main PCB with the aid of a relay and a triac that trips in parallel with the relay only at the time of compressor power on and power off to protect the relay from electrical arcing when the contact is opened and closed The compressor Service Manual New Electronic Cold Platform 2005 ture The refrigerator compartment temperature is controlled by a mechanical damper located on the multiflow unit Th
55. s of the knob u Q lt H D 0 0 lt 3 Turn the knob from maximum to minimum appliance OFF Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English 48 Indesit Company The function terminates automatically after 255 seconds You can interrupt the autotest function by switching on the appliance by means of the freezer knob or by disconnecting and reconnecting the mains power supply With regard to appliance loads driven by the PCB during the autotest procedure and the tested sensors any faults will be signalled by flashing of the fridge lamp Autotest for Basis Electronic Fridge Freezers Electronic Digit Fridge Freezers Ba sic No Frost Electronic Fridge Freezers Activation of the Autotest function for these appliances must be performed by executing the following proce dure 3 Press the SUPER FREEZER button for approximately 5 seconds When the autotest procedure has been activated the 3 LEDs will illuminate steadily for approximately 5 seconds if the digital interface is present the 2 digits will illuminate together with the LEDs The function terminates automatically after 255 seconds You can interrupt the autotest function by switching on the appliance by means of the freezer knob or by disconnecting and reconnecting the mains power supply With regard to appliance loads driven by the PCB during the autotest procedure and the teste
56. s to its natural conclusion If the appliance is set to logical OFF with A1 or A2 active and then switched on again after a fixed number of minutes as parameterised in the EEPROM memory a defrost cycle is forced after which the appliance will resume operation in ac cordance with the settings that were present before the alarm Once the appliance has entered alarm status it is not possible to quit except by means of a reset procedure the only possible change is the transition from alarm A1 to alarm A2 In the event of a power failure the state present at the time of interruption is resumed when power is restored Control of freezer compartment temperature performed by means of the freezer air temperature sensor is executed continuously during appliance operation In the event of a freezer air sensor fault the alarms will no longer be displayed Temperature control does not start for a time parameterised in the EEPROM memory from the first power on of the appliance thus avoiding the possible occurrence of alarms during the testing phases at the first power on at the user s home When the appliance is ON the temperature control is inhibited for a given time interval parameterised in the EEPROM memory in order to give the compartment time to cool without generating any superfluous alarms After a mains power failure the freezer compartment temperature is checked immediately since prolonged absence of electrical power is the main cause for
57. solutions 50 52 Troubleshooting 53 Removing No Frost Electronic Thermostat 54 60 Disassembling the Standard or Evolution Electronic Static Fridge Freezer 61 63 6 EXPLODED VIEWS 64 72 APPENDICES 13 Table of Sensors Temperature Impedance 73 Table of Compressors 73 Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company 1 PRODUCT TYPE 1 1 KEY TO INDESIT PRODUCTS DOBLE DOOR n Top freezer B A AA AAA Efficiency class 1st number only for NF Type NF 1 mechanical 3 electronic number 2 25 3 4 Height 2 150 25 167 3 175 4 187 New Platform Colour Teak Colour Silver Colour Stainless Steel Isobutane Gas for classes A B C Full no frost Grilles Playzone Lock Ventilated Graffiti Final letters EU F etc Intended markets FRIDGE FREEZER Bottom freezer B A AA AAA Efficiency class N New Platform 1st number 1 1 compressor 2 2 compressors 3 1 compressor Solenoid Valve or 1 compressor Electronics 2nd number Height 0 150 2 175 3 187 4 200 3rd number only for 4 drawer freezer 4 levels in freezer Ventilated also DGT for electronic models Colour Teak Colour Silver Colour Stainless Steel Isobutane Gas for classes A B
58. t circuit Compressor Condenser Heating Tube LIGHT BLUE Return Tube GREEN Fridge Capillary Tube RED Freezer Capillary Tube YELLOW Freezer Evaporator RED Fridge Evaporator RED Solenoid valve 10 Accumulated Gas Canister H Molecular filter KS es ey O Kn Gens eet EVAPORATOR COMPONENTS Low Pressure RED Fridge Freezer circuit YELLOW Freezer Circuit GREEN Return Tube COMMON COMPONENTS High Pressure LIGHT BLUE Heating Tube Z 0 lt na Ti L L Cold is generated inside the appliance by means of constant variations of pressure and volume of a con stant mass of refrigerant fluid The refrigerant is compressed in the compressor and due to the effect of the work expended by the com pressor motor it is brought to the state of superheated vapour Before entering the condenser the refriger ant passes through a hot anti condensation tube In the condenser the refrigerant releases heat to the exterior environment and then by flowing through the capillary tube the refrigerant is subjected to a sudden pressure drip that enables it to evaporate at low temperature The fluid evaporates inside the refrigerator and freezer evaporators During these phase changes the fluid absorbs heat from the surrounding environment thereby causing the refrigerator and freezer compartments to be chilled down to the required temperature values which are regulated by means of suitable thermostat control Functi
59. t has not been executed alarm A2 is forced since in the situation of alarm A1 the freezer compartment is set to a temperature that may not be the same as the temperature selected by the user This time interval is reset also when power is restored after a mains power failure A2 o A T1 2 1 2 Hours Soglia A2 N A TRI AI 8 C T2 24 Hours o T3 120 Hours N er E D GE Steg se N B The time and temperature values shown in this graph are EEPROM parameters and as such they are subject to modification THERMOSTAT CONTROL The temperature adjustments in both the compartments are independent from each other and set individu ally by the relative knobs Freezer Compartment Adjustment Freezer temperature is managed by the PCB utilis ing the value detected by the freezer air sensor to switch the compressor on off The On Off threshold is detected by the EEPROM and it depends on the setting selected by the user on the interface If the temperature measured by the freezer air sen sor is above the On threshold a cooling demand is n activated thereby starting the compressor the fan and opening the damper on the contrary if the freezer air sensor detects a temperature lower than the Off temperature the cooling demand is deactivated Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Z O lt na Ti L L d Indesit Company Refrigerator Compartment
60. the compressor will remain stopped despite the presence cooling demands these situations are as follows Compressor protection The compressor switches on once a minimum safety time interval parameterised in the EEPROM has elapsed since the last power off thereby allowing the pressure of gas to reach a point of equilibrium in the refrigerant circuit The same minimum safety time is observed in the event of a mains power interruption voluntary or involuntary This compressor protection strategy is observed only after the product has been operating continuously for a number of hours defined in the memory This facilitates the execution of factory tests Long periods of activity If the compressor runs for a time greater than a value defined in the EEPROM memory it is switched off even in the presence of a cooling demand from either or both compartments This feature is designed to protect the compressor Fridge Fan Operation only in Digit models The fan is designed to distribute cold air uniformly inside the fridge compartment The fan is controlled by A Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Z 0 lt na Ti L O bk Indesit Company the PCB and it starts on receipt of a refrigerator compartment cooling demand after a time interval parameterised in the EEPROM following start up of the compressor It may occur that the fan is kept switched off
61. to minimum Control of freezer compartment temperature is continuous during operation of the appliance by means of the freezer air temperature sensor this control will proceed even if the appliance is in one of the two available alarm conditions In the event of a freezer air sensor fault the alarms will no longer be displayed Temperature control is not performed for a time parameterised in the EEPROM memory to prevent false alarms both during the testing process and at the time of power on immediately after the appliance has been purchased Temperature control and alarm signalling are managed by means of three thresholds Check Threshold the control strategy becomes more intensive when this threshold is exceeded Threshold A1 when ex ceeded alarm A1 is activated Threshold A2 when exceeded alarm A2 is activated The values of the three thresholds are parameterised in the EEPROM memory If the control temperature exceeds the Check Threshold but does not exceed the A1 Alarm threshold a delay time T1 is activated parameterised in tte EEPROM before performing the next control to prevent the generation of alarm signals when the placement of large quantities of warm food in the freezer compart ment near the freezer air sensor causes unreliable transient temperature readings At the same time an other time interval T2 is activated parameterised on the EEPROM after which if the temperature is con stantly maintained between the Check Threshold
62. urn Tube 7 Capillary tube Edition Language 2005 03 25 English COMPOMERNTS d Indesit Company BASIC ELECTRONIC STATIC FRIDGE FREEZER OR EVOLUTION MODEL mb ST SEN SE l PIA EK dien 1 Jee Fridge compartment Freezer compartment Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Ore e NIS NEES Indesit Company SE M d alli Fridge fan evolution model only an lamp holder Main PCB Cover 1 Main PCB Cover 2 Hardware Key Interface Service Manual New Electronic Cold Platform 2005 Display Interface PCB Edition 2005 03 25 Language English OTe Vi o NI iNHE Indesit Company Ore e NIS NEES Rear Components Key Compressor Compartment Compressor Water Bowl Filter Main PCB Delivery Tube Return Tube Capillary tube CON OO A UO N Service Manual Edition Language New Electronic Cold Platform 2005 2005 03 25 English Indesit Company ELECTRONIC THERMOSTAT DOUBLE DOOR NO FROST Ore He NIS NEES Thermostat PCB w TITTI TETTI TEE l Wm db ler tti o EEFE rr I IAM REES WW di r pri nia EI a TELI ee e I RER VUKUIHSERAERI di fad be dia i EE geg ga nali i iii ci i i ele rer T Freezer compartment Freezer compartment evaporator coil S
63. ving properties of tex ture and flavour Activating this function forces the compressor run continuously thereby obtaining maximum freezing power in the freezer compartment The fan starts after a time interval parameterised in the EEPROM memory from the compressor ON time thereby displacing the cold air from the evapo rator coil and allowing the freezer compartment to be chilled Service Manual New Electronic Cold Platform 2005 When the SUPER COOL function is inhibited the appliance returns to the setting that was active be fore the SUPER COOL function was selected The user can also activate the ECO or HOLIDAY functions which will become operational as soon as the SUPER COOL function has been deactivated The SUPER COOL function cannot be activated if the HOLI DAY function is active In the case of a faulty refrigera tor air sensor this function is timer controlled In case of electrical power failures the function is resumed automatically when power is restored com pleting the remaining cycles except in the presence of a temperature alarm This function allows optimal chilling of large quanti ties of food in the refrigerator compartment by alter ing the refrigerator On and Off set points in accord ance with parameters stored in the EEPROM memory and it is maintained for the number of cy cles stored in the memory The cold air transferred by the fan via the damper serves to chill the refrig erator compartment

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