GE ETS22 Technical Service Manual

GE ETS22 Technical Service Manual

Ltmnf 22 and 25 cubic foot ge/hotpoint/profile arctica refrigerators with electronic controls

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TECHNICAL SERVICE GUIDE
LTMNF 22 and 25 Cubic Foot
GE/Hotpoint/Profile
Arctica Refrigerators with Electronic
MODEL SERIES:
ETS22
GTS22
HTS22
PTS22
PTS25
STS22
PUB #31-9077
05/01
GE Consumer Home Services Training
Controls

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Summary of Contents for GE ETS22

  • Page 1 GE Consumer Home Services Training TECHNICAL SERVICE GUIDE LTMNF 22 and 25 Cubic Foot GE/Hotpoint/Profile Arctica Refrigerators with Electronic Controls MODEL SERIES: ETS22 GTS22 HTS22 PTS22 PTS25 STS22 PUB #31-9077 05/01...
  • Page 2 If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened. GE Consumer Home Services Training Technical Service Guide Copyright © 2001 All rights reserved.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS TECHNICAL DATA ........................2 MODEL NOMENCLATURE ......................3 SERIAL NUMBERS ........................4 WARRANTY ..........................5 RATING PLATE ..........................6 MINI-MANUAL ..........................6 DOOR REVERSAL ........................6 SHELVES AND BINS ........................11 CABINET CONSTRUCTION ....................... 15 Cabinet ..........................15 Base Grille ..........................
  • Page 4: Technical Data

    Technical Data 238C1616P001 TMNF - 22 DISCONNECT POWER CORD BEFORE SERVICING IMPORTANT SAFETY NOTICE IMPORTANT-RECONNECT ALL GROUNDING DEVICES This information is intended for use by individuals All parts of this appliance capable of conducting possessing adequate backgrounds of electrical, electrical current are grounded. If grounding wires, electronic and mechanical experience.
  • Page 5: Model Nomenclature

    BB - Black on Black E - Eterna CC - Bisque on Bisque CC - Bisque on Bisque S - GE Select WH - White on black WH - White on Black AD - Almond on Black AD - Almond on Black...
  • Page 6: Serial Numbers

    SERIAL NUMBERS The serial numbers for General Electric, Hotpoint, Profile, and Arctica 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 7: Warranty

    Any part of the refrigerator (excluding water filter cartridge) which fails due to a defect in From the date of the materials or workmanship. During this full one-year warranty, GE will also provide, free of charge , original purchase all labor and in-home service to replace the defective part.
  • Page 8: 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 9 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 10 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 11 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 12 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.
  • Page 13: 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 14 Slide-Out Spillproof Shelf (on some models) To replace: The slide-out spillproof shelf allows you to 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 15 Shelf Saver Rack (on some models) To remove, slide the rack out to the stop Slide-out beverage rack holds twelve cans of position, lift the rack up and past the stop soda or two wine/water bottles (lengthwise). It can be removed for cleaning. position and lift it out.
  • Page 16 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.
  • Page 17: 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 18: Door Gaskets

    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.
  • Page 19: Icemaker

    ICEMAKER The 2001 LTMNF refrigerators use an electronic icemaker. Refer to Pub. #31-9063 for service information. 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 –...
  • Page 20: Airflow

    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.
  • Page 21: Evaporator Fan

    Evaporator Fan Evaporator Fan Adjustment The position of the fan blade in relation to the 5/16" ± 0.03 shroud is critical. Refer to graphic for specifications. If the fan shorts, it will damage the main control board. If the resistor on the main control board Blade tip 1.0"...
  • Page 22 The evaporator fan utilizes a permanent magnet, 4-pole, DC motor that operates at three different speeds: high, medium, and low. The speed of the fan is controlled by the voltage output from the primary control board. Voltage output from the control board to the fan is 12.6 VDC; however, in order to regulate the speed of the fan, the control board uses pulse width modulation (PWM) during low speed and medium speed operation.
  • Page 23 The evaporator fan motor uses a 4-wire Evaporator Fan connection, utilizing a common wire (white), feedback/rpm wire (blue), supply wire (red), and a signal wire (yellow). White Wire (DC Common) The white wire is the DC common wire used for Connector (To Main Control Board) testing.
  • Page 24: Condenser Fan

    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 25: Defrost System

    defrosts. If the doors are opened frequently DEFROST SYSTEM 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 26: Normal Operating Characteristics

    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 27: Defrost Heater

    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 28: Defrost Probes

    Defrost Probes 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...
  • Page 29: 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 30: Control Board

    Control Board The main control board, located behind a panel at the rear of the refrigerator, manages the operation of the refrigerator by calculating response from various inputs. l i f l i f l l i l i f d l l l i f .
  • Page 31 l l i l l i i g i l a t i g i l a t i g i l a t o i t o i t o i t . y l i t c i t c o i t h t i o i t...
  • Page 32 t i u h t i t i u h t i t i u h t i o l r . t i o l l . t n , l o n i l o i t o i t o i t i t p o i t...
  • Page 33 a t l a t l o l l , ) . o l l a t l – 31 –...
  • Page 34 o l l e t i g i l c t i g i l c t i – 32 –...
  • Page 35 – 33 –...
  • Page 36 n i a o r t a t l o t c a t l a t l e r i r o l / t u o t - a t l i d a i t a o l l l o r e l p o o f...
  • Page 37: Thermistors

    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.
  • Page 38: 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 39: Wiring Diagram

    Wiring Diagram FREEZER LAMP GREEN/YELLOW ORANGE ORANGE ICE MAKER DEFROST WHITE THERMOSTAT BROWN ORANGE PINK BLUE DEFROST THERMOSTAT BROWN FREEZER LIGHT SWITCH PURPLE PURPLE BROWN ORANGE FRESH FOOD LIGHT SWITCH ORANGE FRESH FOOD LAMP PURPLE ORANGE POWER CORD BLACK ORANGE TO MACHINE WIRING WHITE...
  • Page 40: 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 41: Refrigerant Charge

    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, P/N WR49X10025, must be used to 6.
  • Page 42: Component And Connector Locator Views

    COMPONENT AND CONNECTOR LOCATOR VIEWS Evaporator Fan Evaporator Fan Connector Freezer Thermistor Icemaker Connector Evaporator Thermistor Defrost Probe Defrost Overtempertaure Thermostat Defrost Heater Evaporator Defrost Heater Defrost Drain Probe Support – 40 –...
  • Page 43 Fresh Food Door Switch Temperature Control Fresh Food Thermistor Fresh Food Compartment – 41 –...
  • Page 44 J1 (To Thermistors) J2 (To Evaporator Fan and Condenser Fan) Main Control Board J3 (To Temperature Control Board) – 42 –...
  • Page 45 – 43 –...
  • Page 46 Compressor Relay and Dryer Overload No-Clean Condenser (Under Cover) Condenser Fan Capacitor – 44 –...
  • Page 47: Flowcharts

    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 Is the evaporator fan running? Fan Not Running flowchart.
  • Page 48 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 49 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 50 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 51 Compressor Not Running Unplug refrigerator. Warm freezer thermistor to 70 F. Adjust settings Connect power and set and allow 24 hours temperature controls to 5 and 5. to stabilize. Does compressor start? Check for 120 VAC at Direct test connector J7-9 orange wire compressor.
  • Page 52 Heavy Frost on Evaporator Always check for door ajar, customer usage, numerous door openings, etc. With doors open Perform self-diagnostic test 1-4 (touch panel models only, check for voltage at Replace main J7-6 to J7-9 and J7-7 rotary models proceed board.
  • Page 53 Refrigerator Not Responding Check house House wiring Are interior lights on? supply voltage. problem. 120 VAC present? Check for 120 VAC at 6-pin connector Repair or replace on rear of unit. power cord. 120 VAC present? Repair wiring connections at 6-pin connector.
  • Page 54 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 white and red or white and yellow). A shorted fan motor will damage the replacement main board. •...
  • Page 55 Condenser Fan Not Running Note: • Compressor and condensor fan should always operate at the same time. • When no voltage at main control board, make certain to check for shorted fan motor (less than 1k ohm between white and red or white and yellow). A shorted fan motor will damage the replacement main board.

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