GE TFG20 Technician Manual Download Page 2

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1997 REFRIGERATORS

GLOBAL NEW GENERATION

SxS

TABLE OF CONTENTS

Page
NEW GEN MODELS SUMMARY

NEW GEN G/K2 IMPROVEMENTS

3-4

RATING PLATES

KOREAN ENERGY LABEL

MINI MANUAL

CABINET STRUCTURE

6-8

ICEMAKER

DISPENSER
User Operation

12-15

Service

16-26

Electronic System Diagnosis

27-28

ICEMAKER COMPLAINTS/DIAGNOSIS

DISPENSER COMPLAINTS/DIAGNOSIS

AIR FLOW SYSTEM

31-32

REFRIGERATION SYSTEM

33-34

DEFROST SYSTEM

CONTROL SYSTEM

35-39

INADEQUATE COOLING DIAGNOSIS

WIRING SCHEMATIC

Summary of Contents for TFG20

Page 1: ...g GE Appliances TECHNICIAN MANUAL 1997 INTERNATIONAL REFRIGERATORS NEW GENERATION SxS G K LINES Pub No 31 45703 ...

Page 2: ...PLATES 5 KOREAN ENERGY LABEL 5 MINI MANUAL 5 CABINET STRUCTURE 6 8 ICEMAKER 10 DISPENSER User Operation 12 15 Service 16 26 Electronic System Diagnosis 27 28 ICEMAKER COMPLAINTS DIAGNOSIS 29 DISPENSER COMPLAINTS DIAGNOSIS 30 AIR FLOW SYSTEM 31 32 REFRIGERATION SYSTEM 33 34 DEFROST SYSTEM 34 CONTROL SYSTEM 35 39 INADEQUATE COOLING DIAGNOSIS 40 WIRING SCHEMATIC 41 ...

Page 3: ...K2 PRODUCT DIMENSIONS CURRENT GENERATION NEW GENERATION Model TFG20 TFG22 TFG25 TPG24 TFK28 TPG30 Height 66 63 66 63 68 75 68 75 68 75 68 75 169 cm 169 cm 175 cm 175 cm 175 cm 175 cm Width 31 50 33 50 35 75 35 75 36 00 35 75 80 cm 85 cm 91 cm 91 cm 91 cm 91 cm Depth including 32 50 32 50 32 50 28 44 33 50 34 50 handles 83 cm 83 cm 83 cm 72 cm 85 cm 88 cm Depth no handles 30 50 30 50 30 50 26 38 33...

Page 4: ...RATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 3 NEW GEN 24 28 30 TFK TPG PRODUCT LINE FRONT VIEW IMPROVEMENT CODING ES EXTERNAL SWEAT C CORROSION N NOISE E ENERGY F FEATURE APPEARANCE CB CODE BOARD ...

Page 5: ...TORS GLOBAL NEW GENERATION SxS General Electric Company 1997 4 V VOLTAGE THERMAL NEW GEN 24 28 30 TFK TPG PRODUCT LINE REAR VIEW IMPROVEMENT CODING ES EXTERNAL SWEAT C CORROSION N NOISE E ENERGY F FEATURE APPEARANCE ...

Page 6: ...mperage input watts installation clearances and refrigerant charge it contains unique information such as gross volume freezing capacity fresh food net volume freezer net volume and frozen food storage area net volume There is also a class designator which identifies the ambient test condition range for its given ISO rating On Korean models the logos symbols or numbers for the international regula...

Page 7: ...m the room into the freezer and fresh food compartments The breaker frame is not removable and not replaceable The fresh food and freezer door gaskets are compression type with fiberglass inserts rather than magnetic because the breaker frame at the front flanges of the cabinet is non magnetic Bar magnets mounted to the base channel and steel strikes mounted to the bottom of the doors hold the doo...

Page 8: ...ontacts the cam with a slight amount of resistance As the door is closed further a small roller in the end of the lever glides over the lobe of the cam and pulls the door closed The levers and cams are specifically left hand and right hand but the springs are the same for both sides To remove the levers and springs first remove the base grille Then grip the end of the spring firmly with pliers and...

Page 9: ...r The rear rollers are not adjustable To remove a front roller assembly from the base of the cabinet tilt the cabinet and place 3 inch blocks under the side of the outer case Remove the three 1 4 inch hex head screws to dismount the bracket Then loosen the adjustment screw to disengage the nut and withdraw the roller assembly from the cabinet Remove the E Ring to disassemble the adjustment screw f...

Page 10: ...ssion in the lower end of the hinge pin allows use of a 3 16 inch Allen wrench to adjust the pin A nylon plug imbedded in the threads of the pin prevents the pin from rotating tightening or loosening as the door is opened and closed The hinge pin at the bottom of the freezer door is not adjustable Door Gaskets The compression type gaskets are secured to the fresh food and freezer doors with 2 side...

Page 11: ...t the inner door After all screws are driven make sure all screw heads are below the surface of the strips and that the surfaces of the strips are clean Apply the 2 sided tape first to the side retainer strips then to the top and bottom strips Keep the tape back from the outer edges of the strips about 1 16 inch to ensure the outer skirt of the gasket will contact the outer door Use a sharp knife ...

Page 12: ... of the freezer compartment is mounted transversely to the shelf tracks It has a thermal cutoff and produces ice cubes with rounded edges To remove the icemaker first remove the ice bin from the ice shelf Then remove the power cord cover on the back of the ice shelf below the icemaker and disconnect the power cord Remove the screw that secures the icemaker to the ice shelf and lift the icemaker of...

Page 13: ...n the machine compartment a recess assembly on the freezer door Ice Bin Capacities Model Style Capacity 20 Bucket 8 1 lbs 3 7 kg 24 27 Bucket 10 8 lbs 4 9 kg 30 Bucket 12 9 lbs 5 6 kg 24 Single helix 8 4 lbs 3 8 kg Ice Shelf Assembly To remove the ice shelf first remove the ice bin and the icemaker Next disconnect the ice shelf wiring harness plug from the receptacle at the left of the evaporator ...

Page 14: ... an electrical solenoid as a glass is gently pressed against the dispenser pad After the glass is withdrawn from the pad the duct door will remain open for 5 to 10 seconds to prevent the entrapment of ice in the duct and chute An audible snap can be heard when the solenoid is energized Then when the duct door closes a soft pop may also be heard On models that have a light in the recess the light w...

Page 15: ...me either pad is touched A green indicator light verifies which selection has been made 2 The door alarm can be enabled by touching the door alarm on off pad A beep will sound each time the pad is touched A green indicator light verifies the alarm is enabled A beep will sound after the fresh food or freezer door has been open for thirty seconds The beep will continue until both doors are closed or...

Page 16: ...tention at the same time the highest priority code will be displayed until erased The codes in order of priority are FF Freezer check for thawing of frozen foods PF Power power has been off for more than 2 seconds CI Icemaker check ice bin for blockage dE Defrost defrost system has failed 7 The system check reset provides a review of all diagnostic codes in order of priority Touching the reset pad...

Page 17: ...m to seat the lip Pad Support To remove the pad support first remove the pad Reach through the opening with fingertips and gradually pull the support forward at each corner to disengage the molded pins from the recess housing Caution excessive force applied at one corner may result in breaking a molded pin from the support To reinstall the pad support first reinstall the pad on the pad support Pos...

Page 18: ...move the control module first remove the control housing Then remove the knobs from the selector switch and light switch by pulling them straight downward Disconnect the 4 wire harness connector from the control module Remove the screws at the ends of the cover and lift the cover from the control housing Grasp the edges of the control module and lift it out of the slots in the control housing To r...

Page 19: ... Reinstall the wiring harness control housing escutcheon pad support and pad Pad Switch To remove the pad switch first remove the control housing Then disconnect the wiring harness from the switch Remove the screw at the bottom of the switch and slide the switch off of the the mounting pin To reinstall the pad switch position it on the mounting pin so that the terminals are at the top and the swit...

Page 20: ... that the actuator paddle is behind the switch lever Firmly press the actuator to seat it into the notch Caution verify operation of the switch by rotating the actuator Reinstall the control housing escutcheon pad support and pad Ice Deflector To remove the ice deflector remove the control housing and the pad switch actuator Grasp the rear edge of the ice deflector and pull it from the control hou...

Page 21: ...of the funnel Position the funnel and support into control housing cavity and press the support firmly to lock the tabs Dress the ice deflector flap below the rear edge of the funnel Reinstall the control housing escutcheon pad support and pad Duct Door To remove the duct door first remove the control housing Then open the duct door and disengage the cleats from the duct door toward the rear Swing...

Page 22: ... the retainer and screw at the left end Caution verify that the crank is engaged into the slot of the armature by pushing the armature into the solenoid and observing the operation of the duct door Reinstall the duct door control housing escutcheon pad support and pad Duct Door Solenoid To remove the duct door solenoid first remove the control housing Disconnect the wiring harness from the solenoi...

Page 23: ... the trim in new unscored locations Position the tabs along the top edge of the trim over the lip of the recess housing and engage the locator guide into the lip notch While holding the trim in position engage the pins into the retainers and press the trim firmly to seat the pins and tabs along the bottom Make sure the locator guide engages the notch at the bottom of the housing Door Handle To rem...

Page 24: ...the top and right side Position the water tubing behind the recess housing and into the groove in the foam insulation Caution unless the tubing is in the groove it may become pinched and interfere with the installation of the recess assembly Dress the wiring harness at the upper left side to prevent pinching of wires Engage the ice chute into the duct opening at the top of the recess housing Then ...

Page 25: ... first dismount the recess assembly Then dismount the water tubing nozzle from the rear of the recess housing Cut the orange and brown wires close to the heater connections and peel the heater foil from the top and rear of the recess housing To install a new recess heater first peel the paper backing from the heater foil Then carefully position the foil on the rear of the recess housing beginning ...

Page 26: ...ent damage from electrostatic discharge Grasp the console by the edges and do not touch the connector pins or circuit paths on the control board Leave the conductive pad on the replacement board until just before connecting the wiring harness connectors Control Housing electronic models To remove the control housing first remove the pad the pad support and the control console Remove the screws at ...

Page 27: ...g and press the switch firmly to lock the tabs Then remount the control housing and reinstall the control console Power Module electronic models To remove the power module first remove the control housing Then remove the screw at the rear of the power module Pull the power module to the rear to disengage the tab from the slot in the control housing Disconnect the 11 pin connector from the power mo...

Page 28: ... the tip of a small blade screwdriver into the slot at the base of the plastic housing and gently pry outward The reed switch has a 2 wire harness connector to facilitate replacement Temperature Sensor electronic models The freezer temperature sensor consists of a thermistor mounted to the inner door below the dispenser recess The thermistor has a negative temperature coefficient which results in ...

Page 29: ... are functioning If the power module relays can be heard opening and closing as the water and ice pads are touched this indicates the relay coils are being energized Resistance Voltage Measurements Resistance and voltage measurements can be conveniently made at the control console by removing the control console and disconnecting the wiring harness connectors Resistance measurements can be made of...

Page 30: ...ted the d code will be d DEFROST CURRENT displayed The dC code will be displayed C ICEMAKER CURRENT when current is flowing in both the icemaker dC DEFROST ICEMAKER CURRENT and defrost circuits Power Up Reset The electronic system also provides a means for simulating a power up routing without disconnecting the power cord The power up routine demonstrates that the power module microprocessor and t...

Page 31: ...isplay will show a flashing PF the normal crushed OBSERVE ice and door alarm indicators will ONE BEEP remain illuminated The door open ALL LED INDICATORS LIT 5 SECONDS indicator will remain illuminated if BE DISPLAYED THEN either door is open The warm FLASHING PF DISPLAYED temperature indicator will remain NORMAL LIT illuminated if the freezer temperature is CRUSHED ICE LIT above 13ºC 55ºF The rec...

Page 32: ...1997 REFRIGERATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 31 COMMON COMPLAINTS DIAGNOSIS FOR ICEMAKER ...

Page 33: ...1997 REFRIGERATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 32 COMMON COMPLAINTS DIAGNOSIS FOR DISPENSER ...

Page 34: ...he control console Accordingly food packages placed in the left rear corner of the top shelf if too close to the air discharge could either freeze or block the air flow into the fresh food compartment Air circulating throughout the fresh food compartment picks up heat and moisture and is returned to the evaporator through the return air duct located above the upper storage drawer Evaporator Fan Th...

Page 35: ...t be provided at the top sides and rear of the cabinet for air circulation back into the room The minimum requirements at the top sides and rear are stated in the Mini Manual Condenser Fan Although the condenser fan motor operates at a slower speed RPM than previous models the 5 blade fan moves about the same amount of air CFM and is quieter overall The condenser fan is mounted with screws to thre...

Page 36: ...ser is connected to a copper jumper tube that in turn is connected to the inlet of the condenser loop Condenser Loop The condenser loop made of 5 32 inch O D copper tubing is foamed in place behind the breaker frame thus not accessible for replacement The tubing is routed from the rear of the machine compartment forward to the mullion up the left side of the mullion across the top of the freezer c...

Page 37: ...ATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 36 evaporator end frames The replacement evaporator is furnished as a complete Lo Side which includes the heat exchanger capillary suction tube assembly ...

Page 38: ... right side to ensure any defrost water collecting on the tubing will drain into the trough and not drip onto the freezer floor Refrigerant Charge The refrigerant used in this model is type R134a Refer to the Mini Manual for the exact refrigerant charge quantity DEFROST SYSTEM Defrost Heaters Thermostat Replacement heaters are furnished as a complete set The heater set consists of three heaters wh...

Page 39: ...ature continues to rise the damper will continue to open thus providing a supply of cold air upon demand At the middle 5 setting the damper will close when the temperature drops to 1ºC 30 F To test the operation of the air damper position the fresh food temperature control to the warmest 1 setting and hold an ice cube in contact with the air damper capillary The damper should slowly close in respo...

Page 40: ...removing the cover at the bottom of the control housing However the control module must be removed and disassembled to replace either the temperature control or the air damper Module Removal To remove the control module first remove the ice bin and dismount the icemaker Disconnect the wiring harness plug at the right side of the evaporator fan housing and pull the control capillary covered with a ...

Page 41: ...per rack off at the right end Then lift the serrated arm of the control rack to disengage the control gear and slide the control rack off at the left end Pull the gears from the air damper and the temperature control The gears are fitted onto shafts in the same manner as standard temperature control knobs The damper is mounted to the left end of the control channel with two screws The temperature ...

Page 42: ... it is fully covered by the sleeve inside the foam nozzle Then press the wiring harness grommet back into the slot in the air damper housing Module Reassembly When reassembling the control module the gears for the air damper and temperature control must be firmly pressed onto the respective control shafts and correctly positioned before installing the racks Although both gears are the same diamete...

Page 43: ...t divider Then position the foam nozzle into the foam insert and engage the pin at the lower right mounting support into the locator hole in the back of the liner Engage the module onto the top center support Drive all three mounting screws and reattach the ground wire to the back of the liner Connect the wiring harness plug at the right side of the evaporator fan housing Position the temperature ...

Page 44: ...1997 REFRIGERATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 43 INADEQUATE COOLING DIAGNOSIS FLOW CHART R134a ...

Page 45: ...1997 REFRIGERATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 44 SCHEMATIC WIRING DIAGRAM This schematic wiring diagram is a typical example of a SxS dispenser model ...

Page 46: ...1997 REFRIGERATORS GLOBAL NEW GENERATION SxS General Electric Company 1997 45 ...

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