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Defrost Heater

The defrost heater is a single-tube, radiant
heater. It is held in place by 2 tabs on the
evaporator (1 on each side) and by 2 ceramic
and wire supports.

The ceramic and wire supports prevent the
heater from sagging and touching the metal
drain pan if the glass is broken.

Heater Supports

Defrost Drain Probe

Evaporator Thermistor

The evaporator thermistor is mounted on the
upper right side of the evaporator. The defrost
cycle will terminate when the main control board
detects 65°F from the evaporator thermistor.

The main control board must sense 65°F in less
than 45 minutes, or the defrost cycle will time
out. Normal defrost time is 25 minutes or less,
not including the 5-minute dwell or post dwell
periods.

Defrost Overtemperature Thermostat

The defrost overtemperature thermostat
(bimetal switch) is mounted on the evaporator
and provides overtemperature protection during
defrost. This thermostat will open at 140°F and
will close at 110°F.

Note:

The main control board will not know if

the heater does not come on due to a broken
heater, open defrost overtemperature
thermostat, or an open wiring harness. The
defrost heater is controlled by maximum time on
the main control board or temperature at the
evaporator thermistor.

Defrost Heater Supports

Defrost Overtemperature Thermostat

Evaporator Thermistor

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Содержание GTRC0 Series

Страница 1: ...Consumer Home ServicesTraining TECHNICAL SERVICE GUIDE TMNF 20 Cubic Foot GE Refrigerators MODEL SERIES GTRS0 GTRC0 GTRL0 MTRL0 PUB 01 2010 ...

Страница 2: ......

Страница 3: ... the interpretation of this information nor can it assume any liability in connection with its use WARNING To avoid personal injury disconnect power before servicing this product If electrical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary checks RECONNECT ALL GROUNDING DEVICES If grounding wires screws straps clips nuts or washers ...

Страница 4: ...hms NO LOAD PERFORMANCE Control Position 5 5 and Ambient of 70 F to 90 F Fresh Food F 34 to 40 Frozen Food F 3 to 3F Run Time 70 F 20 to 40 Run Time 90 F 40 to 70 This information is intended for use by individuals possessing adequate backgrounds of electrical electronic and mechanical experience Any attempt to repair a major appliance may result in personal injury and property damage The manufact...

Страница 5: ... 3 ...

Страница 6: ... 0 75 mA Maximum Ground Path Resistance 0 14 Ohms NO LOAD PERFORMANCE Control Position 5 5 and Ambient of 70 F to 90 F Fresh Food F 34 to 40 Frozen Food F 3 to 3F Run Time 70 F 15 to 40 Run Time 90 F 30 to 60 This information is intended for use by individuals possessing adequate backgrounds of electrical electronic and mechanical experience Any attempt to repair a major appliance may result in pe...

Страница 7: ... 5 MODEL NOMENCLATURE Model series GTRS0 GTRC0 GTRL0 MTRL0 20 cubic foot refrigerators ...

Страница 8: ...ady B Ice Maker Ready C Factory Ice Maker D Filter Ready IceMaker E 6 Month Filter Ice Maker F 1 Year Filter Ice Maker Profile CS has Ext Dips Crushed Cubed Water 6 Month Filter G Internal WaterDispenser Filter Ready Ice Maker H Internal WaterDispenser 6 Month Filter Ice Maker I Internal Water Dispenser 1 Year Filter Ice Maker Model Year Z 2010 Engineering Nomenclature A Initial Design B 1st Revis...

Страница 9: ... FT FV FZ FA FD FF FG FH FL FM FR FD APR GZ GA GD GF GG GH GL GM GR GS GS GT GV GZ GA GD GF GG GH GL GM GR GS MAY HZ HA HD HF HG HH HL HM HR HS HS HT HV HZ HA HD HF HG HH HL HM HR HS JUN LZ LA LD LF LG LH LL LM LR LS LS LT LV LZ LA LD LF LG LH LL LM LR LS JUL MZ MA MD MF MG MH ML MM MR MS MS MT MV MZ MA MD MF MG MH ML MM MR MS AUG RZ RA RD RF RG RH RL RM RR RS RS RT RV RZ RA RD RF RG RH RL RM RR R...

Страница 10: ...d GE Configuration Top Freezer Total cubic feet 20 0 Controls Type Knob Electro mechanical and Knob electronic Location Upfront Features Temp 1 9 Sensors No Graphics GE GE Smartwater Filter No Lighting 1 40W Protective Lamp Covers Clear Internal Dispenser No Door Hinge Hinge Right Reversible Door Stops Yes Leveling System 2 Point Front Adj Handles Type GE Face Mounted Plastic Color Color Matched R...

Страница 11: ... 9 ...

Страница 12: ... 10 SERVICE REVIEW REMOVE DOORS TOP HINGE WITH 5 16 SOCKET SCREWDRIVER REMOVE TWO NUTS REMOVE THE TOP HINGE ...

Страница 13: ... 11 REMOVE THE FREEZER DOOR INTERMEDIATE HINGE WITH TORX T 15 HEAD SCREWDRIVER REMOVE THREE SCREWS AND REMOVE INTERMEDIATE HINGE ...

Страница 14: ... 12 REMOVE FRESH FOOD DOOR LOWER HINGE WITH 5 16 SOCKET SCREWDRIVER REMOVE TWO NUTS ...

Страница 15: ...TOMER TO EASILY MOVE THE REFRIGERATOR CABINET LEVELING IS DONE BY ADJUSTING THE FRONT ROLLERS TO ADJUST THE FRONT ROLLERS USE A 3 8 IN SOCKET OR A LARGE FLAT HEAD SCREWDRIVER TO TURN THE ROLLER ADJUSTMENT SCREWS LOCATED BEHIND THE BASE GRILLE FREEZER COMPARTMENT ...

Страница 16: ...LF AND SLIDE IT LEFT INTO THE CENTER OF THE SHELF SUPPORTS ROTATE THE RIGHT SIDE OF THE SHELF UP AND OUT OF THE SHELF SUPPORTS ICEMAKER REMOVE THE ICEMAKER AND WITH THE PHILLIPS HEAD SCREWDRIVER TWO SCREWS COVER EVAPORATOR PRESS AND PULL ...

Страница 17: ... 15 REMOVE THE COVER EVAP WITH THE PHILLIPS HEAD SCREWDRIVER FOUR SCREWS EVAPORATOR FAN MOTOR DISCONNECT TERMINALS AND CONNECTOR ...

Страница 18: ...BE RADIANT HEATER IT IS HELD IN PLACE BY 2 TABS ON THE EVAPORATOR 1 ON EACH SIDE AND BY 2 CERAMIC AND WIRE SUPPORTS THE CERAMIC AND WIRE SUPPORTS PREVENT THE HEATER FROM SAGGING AND TOUCHING THE METAL DRAIN PAN IF THE GLASS IS BROKEN HEATER DEFROST DEFROST DRAIN PROBE ...

Страница 19: ... 17 CONTROL BOX REMOVE THE CONTROL BOX WITH THE PHILLIPS HEAD SCREWDRIVER TWO SCREWS COMPRESSOR COMPRESSOR NO CLEAN CONDENSER DRYER CONDENSER FAN ...

Страница 20: ...p center and bottom hinges to the cabinet Mounting holes in the hinges are not elongated and the hinges are not adjustable When reinstalling the hinges tighten screws firmly but avoid overtightening to prevent stripping Note When reversing the door swing read all instructions thoroughly before starting When handling parts use caution to avoid scratching paint Sort screws to correspond with related...

Страница 21: ...door away from the cabinet Lift the door straight up and off the bottom hinge and place on a protected surface Note If the washer is not on the bottom hinge check to see if it is stuck to the bottom of the door Reversing the Doors 1 Install the top hinge and screws on the opposite side of the cabinet Do not tighten the screws at this time 2 Remove the base grille by pulling it straight out from th...

Страница 22: ...cover on the opposite side of the cabinet 7 Install the center hinge with the three long screws on the opposite side of the cabinet Replace the color matched cap 8 Move the metal door stop and any associated screws to the opposite side of the door Fresh Food Door Handles 1 Remove the plug button by carefully prying underneath the edge with a small flat blade Remove the screw that fastens the botto...

Страница 23: ... of the door and install in the thimble hole 5 Move the front door plug button to the opposite side of the door and install in the screw hole Button 6 Install the handle to the opposite side of the door with 3 screws Note If equipped with long handle ensure that pin in the lower part of the handle is installed in bottom of the door 7 Install handle plug Long Handle Short Handle Handle Plug Hole Pi...

Страница 24: ...ure that the washer is on bottom hinge pin 2 Line up the fresh food door with the center hinge bracket Install the hinge pin in the center hinge bracket and door with a 3 4 in socket Tighten the hinge pin in the center hinge bracket 3 Install the freezer door onto the center hinge pin and upper hinge screws loose Support the door on the handle side and make sure the door is straight and the gap be...

Страница 25: ...t into the center of the shelf supports Rotate the right side of the shelf up and out of the shelf supports To replace Holding the shelf diagonally insert the left end of the shelf into the center of the shelf supports on the side wall at the desired level Insert the right end of the shelf into the shelf supports at the same level Rest each end of the shelf on the bottom of the shelf supports NOTE...

Страница 26: ...ou push the shelves all the way in before you close the door Finger hold Snugger Adjustable Bins on the Door Adjustable bins can easily be carried from refrigerator to work area To remove Lift bin straight up then pull out To replace or relocate Engage the bin in the molded supports of the door and push in Bin willlock in place The snugger helps prevent tipping spilling or sliding of small items s...

Страница 27: ...way to the LOW setting to provide lower humidity levels recommended for most fruits Snack Pan on some models This pan can be moved to the most useful location for your family s needs To remove slide the pan out to the stop position lift the pan up and past thestop position and lift it out Adjustable Temperature Deli Pan on some models When the pan is placed in the top 6 slots on the left side and ...

Страница 28: ... location When the door cannot be fully opened remove the drawer farthest from the door first Make sure the drawer closest to the door is fully closed There is a latch at the front of the center slide rail Push down on the latch and slide the center slide rail to which the drawer is attached away from the door Remove the drawer ...

Страница 29: ...ing retainers that clip into elongated openings in the base channel To remove the grille pull it straight forward GEA01144 GEA01145 Doors The doors are of one piece construction with foam insulation One piece construction provides superior thermal performance and reduces air infiltration During manufacturing the doors are filled with hot foam insulation This may cause slight distortion or ripples ...

Страница 30: ...igerator Cabinet leveling is done by adjusting the front rollers To adjust the front rollers use a 3 8 in socket or a large flat head screwdriver to turn the roller adjustment screws located behind the base grille The rear rollers are not adjustable To remove a front roller assembly from the base of the cabinet 1 Tilt the cabinet back and place a 3 in block under the side of the unit 2 Remove 3 he...

Страница 31: ... 17 ICEMAKER Water Valve A single coil 120 VAC valve is secured to the rear of the cabinet inside the machine compartment on the left hand side GEA01142 GEA01137 ...

Страница 32: ... diverted through the lower portion of the freezer air tower and is pushed though the mullion hole into the fresh food compartment air channel The air then exits the air channel in the front of the fresh food compartment creating a curtain of cold air along the front of the shelves The fresh food air channel also has a rear discharge to maintain deli drawer temperatures Air circulates throughout t...

Страница 33: ...itical Refer to graphic for specifications If the fan shorts it will damage the main control board If the resistor on the main control board is burnt you must replace the fan and the board see photo Evaporator Fan Adjustment 5 16 0 03 Blade tip 1 0 0 05 Target Motor Airflow Orifice GEA01149 ...

Страница 34: ... 20 EXPLODED VIEWS Knob Electro mechanical EX PL OD ED VIE WS ...

Страница 35: ... 21 Knob Electronic ...

Страница 36: ... 22 structure ...

Страница 37: ... 23 FREEZER DOOR FRESHFOOD DOOR ...

Страница 38: ... 24 HINGE ...

Страница 39: ... 25 RACKS SPILLPROOF ...

Страница 40: ...right side of the refrigerator Inlet air is available through the left front and left rear of the machine compartment A rubber divider strip underneath the refrigerator divides the inlet and outlet sides of the machine compartment The rear access cover must be tightly fitted to prevent air from being exhausted directly out of the rear of the machine compartment bypassing the compressor The condens...

Страница 41: ...ir Flow condenser fan mounting bracket 3 Remove 2 screws from the condenser fan cover 4 Pull the fan out and disconnect the electrical connector 1 2 Fan 0 375 Housing Motor Airflow Bracket 0 50 0 05 GEA01148 ...

Страница 42: ...board monitors door opening fresh food and freezer doors and compressor run times The board counts the time the doors are open It reduces the length between defrosts by 210 seconds multiplication factor for each second that each door is open if both doors are open it reduces it by twice the amount The multiplication factor reduces compressor run time If the doors are not opened the compressor will...

Страница 43: ...porator fan and compressor can run continuously for 2 hours Adaptive Defrost Different sound levels can be heard when the fan changes speed Response time for drastic temperature change is 2 to 10 minutes The main control board will only respond to 8 degrees Fahrenheit of temperature change per minute as determined by resistance of sensor Abnormal Operating Characteristics Incorrect Operation Rapid...

Страница 44: ...ense 65 F in less than 45 minutes or the defrost cycle will time out Normal defrost time is 25 minutes or less not including the 5 minute dwell or post dwell periods Defrost Overtemperature Thermostat The defrost overtemperature thermostat bimetal switch is mounted on the evaporator and provides overtemperature protection during defrost This thermostat will open at 140 F and will close at 110 F No...

Страница 45: ...s into the drain opening This probe transfers heat to the drain opening during defrost Two additional defrost probes are attached to the sides of the evaporator These probes extend upward between the freezer wall and evaporator sides to assist the defrosting process Defrost Drain Probe Evaporator ...

Страница 46: ...ply side results in the refrigerator defaulting to midpoint The supply side consists of pins 1 and 2 An open circuit from the return side results in inconsistent run mode The return side consists of pins 3 and 6 Failure of the fresh food only side results in the fresh food defaulting to midpoint Failure of the freezer side results in the freezer defaulting to midpoint COLDER WARMER 9 IS COLDEST HO...

Страница 47: ...ive defrost It communicates to the display board by serial port a Feeding 127VAC control card in the main connector b Measure voltage at the output of voltage regulator on the control card The value should be 5 0 2 VDC at the output of regulator U3 TP TP Vcc and GND Temperature Verification and start cutting a Feeding 127VAC control card in the main connector b Turn the potentiometer knob in posit...

Страница 48: ...67 5 1 69 1 67 6 1 69 1 67 7 1 17 1 59 8 0 44 2 33 9 0 28 3 06 e Remove the power supply to the card Note In position 0 must remain off the compressor and defrost relays Check defrost relay CTQ a Feeding 127VAC control card in the main connector b Wait for the compressor relay is activated c Force the melting by a short circuit between pins VCC and P1 d The compressor will stop relay and defrost r...

Страница 49: ...ce in Kilo ohms 40 40 166 8 kΩ 30 22 88 kΩ 20 4 48 4 kΩ 10 14 27 6 kΩ 0 32 16 3 kΩ 10 50 10 kΩ 20 68 6 2 kΩ 30 86 4 kΩ 40 104 2 6 kΩ 50 122 1 8 kΩ 60 140 1 2 kΩ Temperature Set Point Chart Control Setting Fresh Food Compartment Freezer Compartment Fresh Food Thermistor Temperature Range Freezer Thermistor Temperature Range Minimum Maximum Minimum Maximum 0 Off Off 1 44 F 6 F 43 F 45 F 1 F 11 F 2 4...

Страница 50: ...When the door switch is closed L1 is provided to the compartment light s The main control board receives L1 input on pin 6 J7 when the fresh food door switch is closed door open The main control board receives L1 input on pin 4 J7 when the freezer door switch is closed door open Schematic Knob Electronic ...

Страница 51: ... 37 Schematic Knob Electro mechanical ...

Страница 52: ...condenser does the same job as previous models Air is drawn into the condenser from the front left and rear left of the cabinet Air exits only from the right side of the cabinet Condenser Loop The condenser loop made of 5 32 in O D copper tubing is foamed in place behind the breaker frame and across the mullion It is not accessible for replacement The tubing is routed from the rear of the machine ...

Страница 53: ... a replacement dryer 15 Evacuate and recharge the system using currently accepted procedures Evaporator LOKRING Method 1 Recover the refrigerant 2 Remove the evaporator cover 3 Remove the defrost thermostat 4 Remove the defrost heater 5 Disconnect the ground wire from the evaporator and position all wiring to allow for evaporator removal 6 Remove the 2 screws that hold the evaporator to the cabine...

Страница 54: ... 40 COMPONENT AND CONNECTOR LOCATOR VIEWS ...

Страница 55: ... 41 Relay and Overload Under Cover Compressor Dryer No Clean Condenser Capacitor Condenser Fan ...

Страница 56: ...Not Running flowchart YES Is the compressor running NO Go to Compressor Not Running flowchart YES Is the airflow in the fresh food compartment normal Look for blockage at vents or heavy NO frost on evaporator cover Blockage Remove blockage from evaporator cover vent area YES Verify thermistors are within proper range NO Is the resistance within range Check wiring connections If OK replace thermist...

Страница 57: ...plug back in Is the evaporator fan running NO Go to Evaporator Fan Not Running flowchart YES Is the condenser fan running Go to Condenser Fan NO Not Running flowchart YES Is the airflow in the fresh food compartment normal Look for blockage NO at vents or heavy frost on evaporator cover Blockage Remove blockage from evaporator cover vent area YES Verify thermistors are within proper range NO Is th...

Страница 58: ...rigerator for 15 seconds then plug back in Is the evaporator fan running at correct speed NO Go to Evaporator Fan Not Running flowchart YES Is the airflow in the fresh food compartment normal Look for blockage NO at vents or heavy frost on evaporator cover Blockage Remove blockage from evaporator cover vent area YES Verify thermistors are within proper range NO Is the resistance within range Check...

Страница 59: ...NO Low ambient temperature Is the NO room temperature above 55 F Advise consumer of refrigeration installation requirements YES Verify fresh food thermistor is within proper range Is resistance within range Check wiring NO connections If wiring is OK replace thermistor YES Is evaporator fan operating at proper NO speed Go to Evaporator Fan Not Running flowchart YES Unit tests OK Run checks again R...

Страница 60: ... and allow 24 hours to stabilize NO Check for 120 VAC Is 120 VAC present YES Direct test compressor NO Did compressor start Replace compressor YES YES Check wiring to compressor overload and relay Replace defective part Verify freezer thermistor is within proper range Is the resistance within range Check wiring NO connections If OK replace thermistor YES Replace main board ...

Страница 61: ...nel lit YES Check for 12 VDC at J4 2 to 3 If no NO voltage check wiring If wiring OK replace touch panel Encoder Can touch panel NO be set to 5 and 5 Membrane touch panel or wiring YES Is voltage present Unplug temperature control Does refrigerator start Verify freezer thermistor is within NO proper range Is the resistance within range Check wiring connections If NO wiring is OK replace thermistor...

Страница 62: ...ck thermistors using thermistor values or self diagnostic test 0 7 Thermistors pass Test YES Replace main board NO Unplug refrigerator to reset main control board Reconnect power Warm freezer thermistor to 70 F and set temperature controls to 5 and 5 Did evaporator fan start YES NO Adjust settings and allow 24 hours to stabilize Check wiring connections If OK replace thermistor NO At the fan conne...

Страница 63: ...reezer thermistor to 70 F Reconnect power and set temperature controls to 5 and 5 Recheck voltage Is voltage correct YES Adjust settings and allow 24 hours to stabilize NO At the condenser fan connector check for 13 VDC Is voltage correct for both YES Replace condenser fan motor NO Check for 13 VDC Is voltage correct for both YES Repair wiring between main control board and condenser fan motor NO ...

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