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Summary of Contents for GE GTRS0 Series
- Page 1 Consumer Home Services Training TECHNICAL SERVICE GUIDE TMNF 20 Cubic Foot GE Refrigerators MODEL SERIES: GTRS0 GTRC0 GTRL0 MTRL0 PUB #01-2010...
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Page 3: Important Safety Notice
IMPORTANT SAFETY NOTICE The information in this service guide 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 injur y and proper ty damage. -
Page 4: Technical Data
20 TOP MOUNT GE™ Technical Data 238C4518P001 DISCONNECT POWER CORD BEFORE SERVICING IMPORTANT SAFETY NOTICE This information is intended for use by individuals possessing IMPORTANT - RECONNECT ALL GROUNDING DEVICES adequate backgrounds of electrical, electronic and mechanical All parts of this appliance capable of conducting electrical cur- experience. - Page 5 – 3 –...
- Page 6 20 TOP MOUNT GE™ Technical Data 238C4518P002 ELECTRONIC DISCONNECT POWER CORD BEFORE SERVICING IMPORTANT SAFETY NOTICE This information is intended for use by individuals possessing IMPORTANT - RECONNECT ALL GROUNDING DEVICES adequate backgrounds of electrical, electronic and mechanical All parts of this appliance capable of conducting electrical cur- experience.
- Page 7 MODEL NOMENCLATURE Model series GTRS0, GTRC0, GTRL0, MTRL0 20-cubic foot refrigerators, – 5 –...
- Page 8 Depth/Power F= Superior Wire Shelves Icemaker/Exterior Exterior Color /Special AA - Almond on almond G=Standard Glass Shelves Features G = GE C=Custom Style A=Not Ice Maker Ready H=Upgrade Glass Shelves BB - Black on black M = Moffat H=Energy Star...
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Page 9: Serial Numbers
SERIAL NUMBERS The serial numbers for General Electric refrigerators consists of two letters, followed by six numerals. The two prefix letters of the serial number indicate the month and year the product was manufactured. The year of manufacture does not correspond with the model year of the model number. - Page 10 Internal Dispenser Door Hinge Hinge Right. Reversible Door Stops Leveling System 2 Point Front Adj. Handles Type GE Face Mounted Plastic Color Color Matched Reversible Yes (No kit required) Defrost Type No Frost (Frost guard) Air Clearances Each Side (in.) Top (in.)
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Page 12: Service Review
SERVICE REVIEW: REMOVE DOORS: TOP HINGE WITH 5/16"SOCKET SCREWDRIVER REMOVE TWO NUTS. REMOVE THE TOP HINGE – 10 –... - Page 13 REMOVE THE FREEZER DOOR INTERMEDIATE HINGE: WITH TORX T-15 HEAD SCREWDRIVER REMOVE THREE SCREWS AND REMOVE INTERMEDIATE HINGE – 11 –...
- Page 14 REMOVE FRESH FOOD DOOR: LOWER HINGE: WITH 5/16"SOCKET SCREWDRIVER REMOVE TWO NUTS. – 12 –...
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Page 15: Freezer Compartment
ROLLERS ROLLERS AT THE BASE OF THE CABINET ENABLE THE CUSTOMER 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. - Page 16 LIFT UP THE LEFT SIDE OF THE SHELF 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 PRESS AND PULL COVER EVAPORATOR...
- Page 17 REMOVE THE COVER EVAP WITH THE PHILLIPS HEAD SCREWDRIVER FOUR SCREWS EVAPORATOR FAN MOTOR DISCONNECT TERMINALS AND CONNECTOR – 15 –...
- Page 18 EVAPORATOR AND HEATER DEFROST 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.
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Page 19: No-Clean Condenser
CONTROL BOX REMOVE THE CONTROL BOX WITH THE PHILLIPS HEAD SCREWDRIVER TWO SCREWS COMPRESSOR: DRYER COMPRESSOR NO-CLEAN CONDENSER CONDENSER FAN – 17 –... -
Page 20: Rating Plate
RATING PLATE The rating plate, located inside the refrigerator Rating Plate Location on the upper left-hand side, contains the model and serial numbers. Additionally, the rating plate specifies the minimum installation clearances, electrical voltage, frequency, maximum amperage rating, and refrigerant charge and type. - Page 21 Freezer Door 1. Tape freezer door shut with masking tape. Remove the hinge cover from the freezer door hinge (some models). Top Hinge 2. Remove 2 (T-20) Torx head screws and the top hinge. 3. Remove the tape and tilt the door away from the cabinet.
- Page 22 4. Cover the blade of a putty knife or small flat screwdriver (to avoid scratching the paint) and use the edge to gently pry the color- matched screw cap off the screw heads. Note: Keep the screws with the center hinge. These are longer screws and will be used when installing the center hinge on the opposite side Screw Cap...
- Page 23 3. After the handle has been removed, move the small plug buttons to the opposite side of the door and install in the screw holes. Small Plug Buttons Plug Button 4. Move the large plug button to the opposite side of the door and install in the thimble hole.
- Page 24 Freezer Door Handles 1. Remove the screws and handle from the freezer door. 2. Move the plug button to the opposite side of the door and install in the handle screw hole. 3. Install the handle to the opposite side of the door using the holes closest to the edge of the door.
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Page 25: Shelves And Bins
SHELVES and BINS Note: Not all features are on all models. Refrigerator Compartment To remove: Tilt the shelf up at the front. Lift the shelf up at the back and bring the shelf out. Some models have wire shelves that can be adjusted in the same manner. - Page 26 Slide-Out Spillproof Shelf (on some models) The slide-out spillproof shelf allows you to To replace: reach items stored behind others. The Place the rear shelf tabs just in front of special edges are designed to help prevent the central notches on the shelf frame. spills from dripping to lower shelves.
- Page 27 Shelf Saver Rack (on some models) Slide-out beverage rack holds twelve cans of To remove, slide the rack out to the stop soda or two wine/water bottles (lengthwise). position, lift the rack up and past the stop It can be removed for cleaning. position and lift it out.
- Page 28 Crisper Removal To Remove: When the door cannot be fully opened, remove the drawer farthest from the door These drawers can be removed easily by first. Make sure the drawer closest to the lifting up slightly while pulling the drawer door is fully closed.
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Page 29: Cabinet Construction
CABINET CONSTRUCTION Cabinet The outer case is made of prepainted steel with a textured finish. The fresh food and freezer liners are made of plastic with a smooth finish. Individual compartments provide separation and enhanced individual control between the compartments. The plastic liner provides a thermal break between the interior of the refrigerator and freezer compartments and reduces the transfer of heat from the room into... - Page 30 Door Gaskets The fresh food and freezer doors have magnetic gaskets that create a positive seal to the front of the steel cabinet. The magnetic door gaskets are secured to the fresh food and freezer doors by a barbed edge that locks into a retainer channel.
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Page 31: Ice Maker
ICEMAKER GEA01142 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. GEA01137 – 17 –... - Page 32 AIRFLOW AIR FLOW Airflow Freezer Compartment Cold air from the evaporator is forced up against the top of the freezer and the back of the evaporator cover. It is then discharged through slots along the air tower at the rear of the freezer compartment.
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Page 33: Evaporator Fan
Evaporator Fan Adjustment 5/16" ± 0.03 Blade tip 1.0" ± 0.05 Target Orifice Air Flow Airflow Evaporator Fan Motor The position of the fan blade in relation to the shroud is critical. Refer to graphic for specifications. If the fan shorts, it will damage the main control board. -
Page 34: Exploded Views
EXPLODED VIEWS Knob, Electro-mechanical – 20 –... - Page 35 Knob, Electronic – 21 –...
- Page 36 structure – 22 –...
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Page 37: Freezer Door
FRESHFOOD DOOR FREEZER DOOR – 23 –... - Page 38 HINGE: – 24 –...
- Page 39 RACKS SPILLPROOF – 25 –...
- Page 40 Rear Baffle Front GEA01152 Condenser Fan Adjustment Condenser Fan The condenser fan utilizes a DC motor that operates on a single speed and is mounted in the machine compartment with the No-Clean condenser. The fan and fan shroud are mounted on one end of the condenser, the other end of the condenser is blocked.
- Page 41 condenser fan mounting bracket. 1/2" Housing 3. Remove 2 screws from the condenser fan cover. 4. Pull the fan out and disconnect the electrical connector. 0.375" Motor Airflow Air Flow Bracket 0.50" ± 0.05 GEA01148 – 27 –...
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Page 42: Defrost System
DEFROST SYSTEM defrosts. If the doors are opened frequently and/or for long periods of time, the compressor run time between defrosts will be reduced to as Adaptive Defrost little as 8 hours. Adaptive Defrost can be described as a defrost system that adapts to a refrigerator’s Adaptive Defrost (Pre-chill Operation) surrounding environment and household usage. - Page 43 Adaptive Defrost (Dwell Period) Abnormal Operating Characteristics (Incorrect Operation) After defrost heater operation has been terminated by the main control board, a 5- • Rapid fan speed changes, fan takes at least minute dwell period occurs. During this period, 1 minute to change speeds. the compressor, condenser fan, and the •...
- Page 44 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.
- Page 45 Defrost Probes (on some models) A defrost drain probe is attached to the evaporator and extends 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 evaporator sides to assist the defrosting...
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Page 46: Control System
CONTROL SYSTEM Control Console The control console, located at the top front of the fresh food compartment, contains an 9 IS COLDEST ADJUST FREEZER TEMP ADJUST REFRIGERATOR TEMP encoder (knob version) or a touch panel. Remove the control console by removing 4 (1/4- in.) hex head screws. - Page 47 Control Board The electronics architecture for top mount 20 ft model consists of 1 electronic board. The control board reads analog signal from thermistors and convert it to temperature and controls the Compresor and Defrost heater for Refrigerator operation. It also has 2 door signals to create adaptive defrost. It communicates to the display board by serial port.
- Page 48 c) placing the temperature sensor in the cold well. d) Measure the temperature and start cutting in this position. - The card must be cut and start the compressor relay after the temperatures of the table. Temp Temp 7.02 1.39 7.02 1.39 7.02...
- Page 49 Thermistors This main control board uses input from 3 thermistors. These thermistors are located in the fresh food section, the freezer section, and on the evaporator. The main control board monitors the thermistors to determine the temperature in these areas of the unit and determines which components to run and when to run them, based on this information.
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Page 50: Electrical System
ELECTRICAL SYSTEM Door Switches The door switch (fresh food or freezer) closes when the door is open. 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). - Page 51 Schematic Knob, Electro-mechanical – 37 –...
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Page 52: Refrigeration System
Condenser Loop REFRIGERATION SYSTEM The condenser loop, made of 5/32-in. O.D. The major components of the refrigeration copper tubing, is foamed in place behind the system are a reciprocating-type compressor, breaker frame and across the mullion. It is not condenser, condenser loop, dryer, and a spine- accessible for replacement. - Page 53 4. Remove the defrost heater. 6. Remove the 2 screws that hold the evaporator to the cabinet. 5. Disconnect the ground wire from the evaporator and position all wiring to allow for Caution: evaporator removal. • If desoldering the evaporator, heat shield, , must be used to 6.
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Page 54: Component And Connector Locator Views
COMPONENT AND CONNECTOR LOCATOR VIEWS – 40 –... - Page 55 Compressor Relay and Dryer Overload No-Clean Condenser (Under Cover) Condenser Fan Capacitor – 41 –...
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Page 56: Fresh Food Warm - Freezer Warm
Fresh Food Warm - Freezer Warm Basic refrigeration checks: Door gasket seal OK? Repair as Door switch - light turning off with necessary. door closed? All OK? Reset electronics by unplugging refrigerator for 15 seconds then plug back in. Go to Evaporator Fan Not Running Is the evaporator fan running? flowchart. -
Page 57: Freezer Warm - Fresh Food Normal
Freezer Warm - Fresh Food Normal Check control settings and temperatures. Food at a setting of 5 and 5 with no door openings for 12 hours should be: Adjust settings and allow Fresh food 36 F to 38 F 24 hours to stabilize. Freezer -5 F to +5 F Control settings OK? Basic refrigeration checks:... -
Page 58: Fresh Food Warm - Freezer Normal
Fresh Food Warm - Freezer Normal Check control settings and temperatures. Food at a setting of 5 and 5 with no door openings for 12 hours should be: Adjust settings and allow Fresh food 36 F to 38 F 24 hours to stabilize. Freezer -5 F to +5 F Control settings OK? Basic refrigeration checks:... -
Page 59: Fresh Food Too Cold - Freezer Normal
Fresh Food Too Cold - Freezer Normal Check control settings and temperatures. Food at a setting of 5 and 5 with no Adjust settings and door openings for 12 hours should allow 24 hours to stabilize. Fresh food 36 F to 38 F Freezer -5 F to + 5 F. -
Page 60: Compressor Not Running
Compressor Not Running Unplug refrigerator. Adjust settings and Warm freezer thermistor to 70 F. allow 24 hours to Connect power and set stabilize. temperature controls to 5 and 5. Does compressor start? Check for 120 VAC. Direct test Is 120 VAC present? Replace compressor. - Page 61 Refrigerator Not Responding Check house House wiring Are interior lights on? supply voltage. problem. 120 VAC present? Check for 120 VAC Repair or replace 120 VAC present? power cord. Repair wiring connections at 6-pin connector. Check for 12 VDC at Does unit have J4-2 to 3.
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Page 62: Evaporator Fan Not Running
Evaporator Fan Not Running Note: • When no voltage at main control board, make certain to check for shorted fan motor (less than 1k ohm between). A shorted fan motor will damage the replacement main board. Check fan for obstruction. Remove Find obstruction? obstruction. -
Page 63: Condenser Fan Not Running
Condenser Fan Not Running Note: • Compressor and condensor fan should always operate at the same time. • When no voltage at main control board, Check fan for obstruction. Unplug the refrigerator to reset main control board. Warm freezer thermistor Adjust settings and allow to 70 F.
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