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Operation of Electrical Control Components

Freezer and Refrigerator Modules

The modules, when selected by the rocker switch, control the temperature of the unit by an internal thermistor
mounted on the circuit board. Each module has an individual service mode.

Each module has the following connections to the rear of the circuit board:

1= Neutral
2= Not Used
3= L1
4= Compressor
5= Defrost Thermostat

DPDT Rocker Switch

The DPDT Switch is connected to the household power
supply with L1 connecting to terminal 2, and the Neutral
line to terminal 5. (See Figure 3-3)

In refrigerator mode, The DPDT switch will have the a
closed condition between terminals 5&4, and 2&1.

In freezer mode, The DPDT switch will have the a
closed condition between terminals 5&6 and 2&3.

Ambient Thermostat

The ambient thermostat will close at 35°F (1.6°C) and
will then supply power to terminal 6 of the fan relay.
(See Figure 3-4)

Fan Relay

The purpose of the fan relay is to direct power to the
auxiliary heater and fan motor when ambient temperatures
go below 35°F (1.6°C) and the DPDT switch has
refrigeration selected.

Use an ohmmeter to test the fan relay. The following
conditions should result with the fan relay in the OFF state:

Between terminals 7 & 8 should read 4.4k Ohms.
Between terminals 6 & 2 and 5 & 1 - closed condition.
Between terminals 4 & 6 and 3 & 5 - open condition.

When voltage is supplied to terminal 6 through the
ambient thermistor, voltage will come out terminal 2
and connect with terminal 1.
Terminal 1 is connected to terminal 5 which feeds power to the evaporator fan motor.

The following conditions should result with the fan relay in the ON state:

Line voltage is supplied to terminals 7&8.
Between terminals 4 & 6 - closed condition.
Between terminals 6 & 2 - open condition ( cutting power to the auxiliary heater).
Between terminals 3 & 5 - closed condition (supplying line voltage to the fan).
Between terminals 5 & 1 - open condition

2-3

Electronic Control

1

2

3

4

5

6

7

8

L1

Nuetral

DPDT

Switch

Figure 3-4. Fan Relay Terminal Arrangement

Figure 3-3. DPDT Switch Arrangement

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Содержание FKCH17F7HW

Страница 1: ...REFRIGERATOR FREEZER SERVICE MANUAL 5995519443 2008 ALL RIGHTS RESERVED Convertible Refrigerator Freezer Model FKCH17F7HW Technical Service Manual ELECTROLUX MAJOR APPLIANCES OF NORTH AMERICA ...

Страница 2: ......

Страница 3: ...Basic Information 1 1 Section 1 Basic Information ...

Страница 4: ...eplacement 3 8 Equipment Needed for Evacuation Recharging 3 9 Installing Evacuation and Recharging Equipment 3 9 Evacuating System 3 10 Charging the System 3 10 Preparing the Charging Cylinder 3 10 Final Leak Test 3 11 Verify Refrigerant Type in the System 3 12 Dedicated Equipment 3 12 R 134a Refrigeration Systems 3 12 Miscibility of R 134a and Ester Oil 3 12 Water in the Refrigeration System 3 13...

Страница 5: ...lor coding for safety ground wires is GREEN or GREEN with YELLOW STRIPES Ground leads are not to be used as current carrying conductors It is EXTREMELY important that the service technician reestablish all safety grounds prior to completion of service Failure to do so will create a hazard 7 Prior to returning the product to service ensure that All electrical connections are correct and secure All ...

Страница 6: ...rmation 1 4 Product Features Frigidaire refrigerator freezers are designed for optimal convenience and storage flexibility Use the illustration below to familiarize yourself with product features and terminology ...

Страница 7: ...d for storing fruits vegetables and other fresh produce Wash items in clear water and remove excess water before placing them in the crisper drawers Items with strong odors or high moisture content should be wrapped before storing See Figure 1 2 Adjustable Shelving Multi position adjustable interior shelves can be moved to any position for larger or smaller packages The shipping spacers that stabi...

Страница 8: ...uart 1 136 liters warm water Rinse and dry Wring excess water out of the sponge or cloth when cleaning in the area of the controls or any electrical parts Wash the removable parts with the baking soda solution mentioned above or mild detergent and warm water Rinse and dry NEVER use metallic scouring pads brushes abrasive cleaners or alkaline solutions on any surface DO NOT wash removable parts in ...

Страница 9: ...Electronic Control 2 1 Section 2 Electronic Control ...

Страница 10: ...freezer by pressing either the R for refrigerator mode or F for freezer mode Positioning the DPDT rocker switch in the middle position will disable all cooling functions See Figure 3 2 Setting Selection For settings 1 though 7 when the UP button is pushed to increase temperature the setting number will decrease by one and when the DOWN button is pushed to decrease temperature the setting number wi...

Страница 11: ... of the fan relay is to direct power to the auxiliary heater and fan motor when ambient temperatures go below 35 F 1 6 C and the DPDT switch has refrigeration selected Use an ohmmeter to test the fan relay The following conditions should result with the fan relay in the OFF state Between terminals 7 8 should read 4 4k Ohms Between terminals 6 2 and 5 1 closed condition Between terminals 4 6 and 3 ...

Страница 12: ...Cycle Timing After each 12 hours of accumulated compressor runtime a defrost cycle will be entered and last for thirty minutes The heater will be active until the defrost thermostat opens at 47 F turning off the defrost heater The defrost thermostat closes at 37 F Manual Defrost Mode When pressing both UP and DOWN keys for 3 seconds while on setting 2 the control will enter Manual defrost mode The...

Страница 13: ...opped below 90 volts If any of these errors occur the display will flash an E at one second intervals and the control will go into Fail Safe Mode Fail Safe Mode While in Fail Safe mode the compressor will run constantly with a 30 minute defrost cycle every 12 hours Stuck Key If either key is held in for more than 30 seconds the control enters fail safe operation Exiting Fail Safe Mode Once a failu...

Страница 14: ...2 6 Electronic Control Notes ...

Страница 15: ...3 1 Refrigeration System Section 3 Refrigeration System ...

Страница 16: ...tions are met This term usually implies the use of processes or procedures available only at a reprocessing or manufacturing facility Safety Warnings Compressor Testing Whenever testing a compressor extreme caution should be used to prevent damaging the terminals A compressor with a damaged terminal or a grounded winding can expel a terminal from its insulated housing when the compressor is energi...

Страница 17: ...er the compressor is in operation Liquid refrigerant is evaporated in the evaporator by the heat that enters the cabinet through the insulated walls and by the heat from product load and door openings The refrigerant vapor is then drawn from the evaporator through the suction line to the compressor Compression raises the pressure and temperature of the vapor in the compressor and the vapor is then...

Страница 18: ...diagnosed as short of refrigerant and the system has not been recently opened there is probably a leak in the system Adding refrigerant without first locating and repairing the leak or replacing the component will not permanently correct the difficulty The leak must be found Sufficient refrigerant may have escaped to make it impossible to leak test effectively In such cases add a line piercing val...

Страница 19: ...shing hose on this tank regulator must be equipped with a hand shut off valve Robinair No 40380 Close hand shut off valve and adjust nitrogen regulator to correct pressure before proceeding with flushing procedure To Use Refrigerant To Flush The System 1 Disconnect the suction and discharge lines from the compressor and remove the filter drier Connect process coupling to outlet and inlet tube of c...

Страница 20: ...cess tube is too short silver solder four inch piece of tubing onto process tube at this time Installing a New Compressor Replacement of compressor and installation of filter drier must be done in a continuous sequence so system is exposed to atmosphere no longer than necessary All replacement compressors are shipped with rubber plugs in the suction discharge and process tubes and contain the corr...

Страница 21: ...d overlap 0 5 to provide sufficient area for good solder joint Clean and mark area where tubing should be cut Cut tubing with tubing cutter Work as quickly as possible to avoid letting moisture and air into the system 11 Solder all connections according to soldering procedure 12 Remove original filter drier 13 Install new filter drier at condenser outlet 14 Evacuate and charge system using recomme...

Страница 22: ...and Suction Line Replacement 1 Disconnect electrical supply to refrigerator 2 Recover refrigerant by using EPA approved recovery system 3 Remove shelving 4 Remove evaporator cover 5 Remove evaporator from its installation position 6 Cut or remove suction line from compressor 7 Cut filter drier from condensing unit 8 Remove sealant from cabinet where suction line enters 9 Remove evaporator and suct...

Страница 23: ... vacuum pump Check the serial plate for the correct refrigerant type It is extremely important to verify the type of refrigerant in the system before starting any sealed system repairs With the possible exception of the vacuum pump all service equipment that comes in contact with R 134a during evacuation and recharging must be dedicated Accordingly R 134a will require a dedicated charging cylinder...

Страница 24: ...o vacuum pump is closed 2 Close high side manifold gauge valve 3 Set charging cylinder scale to pressure indicated on cylinder pressure gauge 4 Observe refrigerant level in sight glass Subtract amount to be charged into system and note shut off point 5 Open charging cylinder valve slowly and allow proper charge to enter system 6 As soon as refrigerant in sight glass has gone down to predetermined ...

Страница 25: ...efore proceeding 12 Remove the high side process tube adapter and solder the process tube closed 13 Clamp the low side process tube with the pinch off tool while the unit is running Remove the low side process tube adapter and solder the process tube closed 14 Check the process tubes for refrigerant leaks Final Leak Test 1 With the refrigerator turned OFF leak test all low side system components 2...

Страница 26: ...res and lower start up sound transmission Miscibility of R 134a and Ester Oil A special synthetic oil known as Ester oil is used as a lubricant in refrigeration systems operating on R 134a Ester oils are produced from alcohols and fatty acids and are available in several different variants Ester oils have a pleasant aroma reminiscent of fruit Ester oils generally include various types of additives...

Страница 27: ...of development work on R 134a tests were carried out on a different type of synthetic oil known as Poly Alkaline Glycol PAG This oil is also used in certain air conditioning systems for cars PAG and Ester oil DO NOT mix with one another Service equipment used for R 134a Ester oil must not come into contact with PAG Water In The Refrigeration System Even in very small quantities water in any refrig...

Страница 28: ...ide leak you will need to install the two stage service dryer filter part number 5303918288 You must heat the crankcase area of the compressor using a heat gun on the high heat setting throughout the 30 minutes you are running your vacuum pump to pull a vacuum on the system Every 4 to 5 minutes while you are running your vacuum pump and heating the crankcase area shake the compressor By heating th...

Страница 29: ...ewly designed detectors with good R 134a sensitivity are now available Be sure to consult with the manufacturer before selecting or using a non selective detector with R 134a Halogen specific detectors use a specialized sensor that allows detection of compounds containing chlorine fluorine bromine and iodine without being activated by other species The major advantage of this type of detector is a...

Страница 30: ...3 16 Refrigeration System HFC 134a CFC 12 Pressure Temperature Chart ...

Страница 31: ... breathing has stopped give artificial respiration Spills or Leaks If a large release of vapor occurs such as from a large spill or leak the vapors may concentrate near the floor or low spots and displace the oxygen available for breathing causing suffocation Evacuate everyone until the area has been ventilated Use blowers or fans to circulate the air at floor level DO NOT re enter the affected ar...

Страница 32: ...hould be monitored routinely Air lines should never be connected to storage tanks Filling and Charging Operations Before evacuating cylinders or refrigeration equipment any remaining refrigerant should be removed by recovery system Vacuum pump discharge lines should be free of restrictions that could increase discharge pressures above 15 psig 205 kPa and result in formation of combustible mixtures...

Страница 33: ...4 1 Component Teardown Section 4 Component Teardown ...

Страница 34: ...AL COMPONENTS AFTER SERVICE IS COMPLETED BE SURE ALL SAFETY GROUNDING CIRCUITS ARE COMPLETE ALL ELECTRICAL CONNECTIONS ARE SECURE AND ALL ACCESS PANELS ARE IN PLACE IF UNIT WAS USED PRIOR TO SERVICE THE COMPRESSOR ASSEMBLY WILL BE HOT WEAR PROTECTIVE GLOVES AND THE APPROPRIATE SAFETY GEAR WHEN WORKING WITH COMPRESSORS IF REMOVING A DOOR FROM A UNIT REMEMBER THAT DOORS ARE HEAVY IF THEY WERE TO FAL...

Страница 35: ...ove the door assembly 1 Make sure electrical plug is disconnected from the wall outlet 2 Gently lay freezer on its back on a soft clean surface 3 Lift plastic cover off upper hinge assembly See Figure 5 3 4 Using a 3 8 socket or wrench extract hex head screws securing the upper hinge to the unit frame 5 Remove the grille kickplate by extracting the screws from each end of the grille kickplate See ...

Страница 36: ...hat is pressed between the inner panel and the door assembly and is secured in position when the inner panel screws are fastened to the door assembly The inner panel does not have to be removed to extract the door gasket from the door assembly To remove the door gasket 1 Lift the inside edge of the door gasket to access the inner panel screws 2 Loosen the inner panel screws until the door gasket c...

Страница 37: ...t can be arranged as needed by the user To remove a two liter door bin lift the bin straight up until it is free of the supports molded into the door liner then pull from unit See Figure 5 8 Dairy Door Removal The dairy door has a hole on each side that fits over molded pins in the door liner To remove the dairy door 1 Open dairy door 2 Grab the dairy door on each side and flex the outer edge inwa...

Страница 38: ...r bumpers are attached to the metal bars to prevent side to side movement within the cabinet See Figure 5 11 To remove the shelf assemblies 1 Remove rubber bumpers from right side of shelf assembly 2 Remove shelf assembly by pushing to the right until the metal bars are free from the left side liner wall Then tilt down or up until the shelf can be removed from the right side liner wall Crisper Dra...

Страница 39: ...sper cover supports extract the three screws securing each crisper cover support to the liner sidewall Light Shield Removal The light shield is secured with retaining tabs that locate in slots cut in the interior cabinet ceiling See Figure 5 14 To remove the light shield grab the light shield and push in near the retaining tabs until the retaining tabs release from the slots in the compartment cei...

Страница 40: ...o the freezer compartment 4 Carefully pull the evaporator cover away from the back wall far enough to access the electronic control electrical connection behind the evaporator cover using caution not to damage the gaskets on both sides of the evaporator cover 5 Reach behind evaporator cover and disconnect electronic control electrical connection from wire harness See Figure 5 17 6 The evaporator c...

Страница 41: ...et fan motor and fan blade Two screws secure the fan motor to the fan motor mount bracket The evaporator fan assembly is then secured with two screws to the back wall of the freezer compartment See Figure 5 19 To remove the evaporator fan assembly 1 Remove the bottom two glass shelf assemblies 2 Remove crisper drawers crisper cover and supports 3 Remove the evaporator cover 4 Remove wires from ret...

Страница 42: ... assembly Evaporator Removal The evaporator sets upon the two screw standoffs mounted to the back wall of the freezer compartment Two pieces of styrofoam are pressed between the evap orator assembly and the sidewalls of the unit securing the assembly in position See Figure 5 22 To remove the evaporator 1 Remove the evaporator cover 2 Remove the styrofoam insulators from both sides of the evaporato...

Страница 43: ...nit Filter Drier Removal The filter drier is located in the compressor area on the left side of the compressor See Figure 5 24 To remove the filter drier 1 Pull unit from its installation position 2 Extract the screws securing the fiber board cover to the unit frame and remove from unit 3 Recover refrigerant by using EPA approved recovery system 4 Using a 3 cornered file score a groove around capi...

Страница 44: ...ompletely recovered cut suction and discharge lines as close to compressor as possible Leave only enough tubing to pinch off and seal defective compressor Plug or tape any open system tubing to avoid entrance of moisture and air into system Remove inoperable compressor and transfer mounting parts to new compressor 8 Install new compressor inexact same manner as original compressor 9 Reform both su...

Страница 45: ...llation position 2 Using a short phillips head screwdriver extract the four screws securing the drain pan heater loop brackets to the drain pan Lift drain pan heater loop out of drain pan 3 Pull drain tube from drain pan 4 The front of the unit will need to be raised to access the drain pan screws 4 Using a short phillips head screwdriver or socket with a phillips head bit extract the four screws ...

Страница 46: ...s of a condenser assembly that can be installed on the back of the cabinet mounting hardware replacement filter drier and a complete installation instructions To install use the following procedure 1 Disconnect unit from source of power 2 Recover refrigerant by using EPA approved recovery system 3 Installed the replacement condenser in accordance with the instructions included with the kit 4 Evacu...

Страница 47: ...5 1 Troubleshooting Section 5 Troubleshooting ...

Страница 48: ...other circuit Check circuit for proper voltage Set control to a temperature setting Instruct customer Ensure plug is tightly pushed into outlet Check replace fuse with a 15 amp time delay fuse Reset circuit breaker Check house lights Call local Electric Company It s normal for the Refrigerator Freezer to work harder under these conditions It takes 24 hours for the Refrigerator Freezer to cool down...

Страница 49: ...d when compressor comes on Bubbling or gurgling sound Vibrating or rattling noise Moisture forms on inside Freezer walls Odors in Freezer Door will not close Light bulb is not on 5 3 This is normal When the surrounding noise level is low you might hear the compressor running while it cools the interior This is normal Sound will level off or disappear as Refrigerator Freezer continues to run This i...

Страница 50: ... control 1 Is the control set to zero 1 Check the light bulb with an ohmmeter Is the bulb good 1 Connect a low side gauge to the processing tube on the compressor Is the pressure in a vacuum or lower than normal 1 Defective electronic control 1 Defective electronic control Yes Go to step 2 No Check power to freezer and make sure unit is plugged in Check rocker switch Yes Select refrigerator or fre...

Страница 51: ... the thermostat and the wire at the end of the heater Is the reading about 25 omhs 3 Disconnect defrost thermostat from the defrost heater and measure the resistance of the defrost heater Is the reading about 25 omhs Freezer does not automatically defrost Yes Replace electronic control No Go to step 2 Yes Replace electronic control No Go to step 3 Yes Replace defrost thermostat No Replace defrost ...

Страница 52: ...5 6 Troubleshooting Notes ...

Страница 53: ...6 1 Wiring Diagrams Section 6 Wiring Diagrams ...

Страница 54: ...6 2 Wiring Diagrams 7 4 6 2 8 3 5 1 ...

Страница 55: ... Max Ohms Min Ohms Tolerance Ohms 0 32 32 654 33 604 72 31703 29 2 91 15 5 72 940 75 283 21 70 596 79 3 21 20 4 97 060 100 283 44 93 836 56 3 32 30 22 177 000 183 293 70 170 706 30 3 55 40 40 336 000 349 139 51 322 860 49 3 91 Thermistor Resistance Chart ...

Страница 56: ...7 1 Section 7 Installation Information Installation Information ...

Страница 57: ...OR EXPLOSIVE LIQUIDS OR VAPORS SUCH AS GASOLINE INSIDE OR IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE THIS APPLIANCE IS EQUIPPED WITH A THREE PRONG GROUNDING PLUG FOR PROTECTION AGAINST POSSIBLE ELECTRIC SHOCK HAZARDS PLUG IT ONLY INTO A DEDICATED GROUNDED ELECTRICAL OUTLET WHEN ONLY A STANDARD TWO PRONG ELECTRICAL OUTLET IS AVAILABLE THE CUSTOMER MUST HAVE IT REPLACED WITH A DEDICATED PROPERLY...

Страница 58: ... EVEN IF YOU PLAN TO DISCARD THE FREEZER MANY COMMUNITIES HAVE LAWS REQUIRING YOU TO TAKE THIS SAFETY PRECAUTION REMOVE OR DISCARD ANY SPACERS USED TO SECURE THE SHELVES DURING SHIPPING SMALL OBJECTS ARE A CHOKE HAZARD TO CHILDREN CHILD ENTRAPMENT AND SUFFOCATION ARE NOT PROBLEMS OF THE PAST JUNKED OR ABANDONED REFRIGERATORS OR FREEZERS ARE STILL DANGEROUS EVEN IF THEY WILL SIT FOR JUST A FEW DAYS...

Страница 59: ...ent air circulation is essential for the proper operation of your freezer NOTE The exterior walls of the refrigerator freezer may become quite warm as the compressor works to transfer heat from the inside Temperatures as much as 30 F warmer than room temperatures can be expected Leveling The refrigerator freezer must have all bottom corners resting firmly on a solid floor The floor must be strong ...

Страница 60: ...s GFCI are NOT RECOMMENDED DO NOT USE AN EXTENSION CORD OR AN ADAPTER PLUG If the voltage varies by 10 percent or more refrigerator freezer performance may be affected Operating the refrigerator freezer with insufficient power can damage the motor Such damage is not covered under the warranty If you suspect your voltage is high or low consult your power company for testing To prevent the refrigera...

Страница 61: ...grille kickplate See Figure 7 5 6 Using a 3 8 socket or wrench extract hex head screws securing the lower hinge to the unit frame Use a phillips head screwdriver to extract the remaining screw from the lower hinge assembly 7 Lift the door assembly off of the unit frame Door Handle Mounting Instructions For some installations the door handle may need to be removed See Figure 7 6 To remove the door ...

Страница 62: ...7 7 Installation Information Model FKCH17F7HW Unit Dimensions ...

Страница 63: ...7 8 Installation Information Notes ...

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