GE SCA1000 Technical Service Manual
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GE SCA1000 Technical Service Manual

GE SCA1000 Technical Service Manual

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See also: Owner's Manual , Instruction and Installation Manual
C
GE Consumer Home Services Training
TECHNICAL SERVICE GUIDE
Advantium 120
MODEL SERIES:
SCA1000
SCA1001
– 1 –
PUB # 31-9076
05/01

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Summary of Contents for GE SCA1000

  • Page 1 GE Consumer Home Services Training TECHNICAL SERVICE GUIDE Advantium 120 MODEL SERIES: SCA1000 SCA1001 – 1 – PUB # 31-9076 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 Table of Contents Introduction ......................2 Nomenclaturere ..................... 3 Warranty ......................... 4 Oven Features ....................... 5 Control Panel Features ..................6 Operating Characteristics ..................7 Mechanical Disassembly ..................25 Troubleshooting ....................39 Component Locator View ..................53 Schematics and Wiring Diagrams ..............

  • Page 4: Introduction

    Introduction simultaneously. While radiant heat is the primary The new Advantium oven uses breakthrough source of power, a “microwave boost” is added Speedcook technology to harness the power of with certain foods. Foods cook evenly and fast, light. The Advantium oven cooks the outside of retaining their natural moisture.

  • Page 5: Nomenclaturere

    Nomenclature S C A 1 0 0 0 D C C GE Speedcook Product Color Technology SS = Stainless WW = White on white CC = Bisque Configuration AA = Almond on almond A = Above-the-cooktop BB = Black on black...

  • Page 6: Warranty

    Any part of the oven which fails due to a defect in materials or From the date of the workmanship. During this full one-year warranty, GE will also provide, original purchase free of charge, all labor and in-home service to replace the defective part.

  • Page 7: Oven Features

    Oven Features Throughout this manual, features and appearance may vary from your model. Oven Rack (Turntable) Door handle The oven rack (turntable) must always Pull to open the door. The door must be be in place, on the oven floor, for all securely latched for the oven to operate.

  • Page 8: Control Panel Features

    Control Panel Features SPEEDCOOK Press this button to access the speedcook menu or to set your own speedcook program. Press and hold START/PAUSE for 3 seconds to repeat the last Press this button to start or pause cooking selection. SELECTOR DIAL any cooking function.

  • Page 9: Operating Characteristics

    Operating Characteristics Table of Contents Speedcook Power Levels ......... . 8 Upper Heaters .

  • Page 10: Speedcook Power Levels

    Speedcook Power Levels Lower Heater Advantium uses power from a high-intensity The lower heater is a 375-watt ceramic heater. It halogen light, ceramic heaters, and microwaves to operates in speedcook, oven/bake, and warm cook food from the top, bottom, and interior modes.

  • Page 11: Thermal Protection

    The following chart shows the predicted Thermal Protection compensation times based on a 12-minute Thermal protection is a safety feature built into the speedcook selection (such as Biscuits, Refr; Advantium’s software. In the event that the Large). internal oven temperature reaches 500° F, the thermistor will communicate this information to the main PCB and thermal protection will be initiated.

  • Page 12: Fuses

    Thermal compensation occurs only once, at the Cavity TCO beginning of a Speedcook cycle. In the following The cavity TCO is mounted on the side of the thermal compensation table, the first column lists damper duct. This position allows the TCO to the initial cavity temperature, the second and third sense the temperature of the air escaping from the columns list the number of minutes and seconds...

  • Page 13: Damper Assembly

    Damper Assembly Convection Fan The damper assembly opens and closes the The convection fan is used to gently circulate damper doors to allow air to enter and exit the warm, heated air from the heating elements oven cavity. The assembly consists of the damper throughout the oven and around the food.

  • Page 14: Airflow

    Airflow Magnetron Magnetron Damper Door Damper Door (Inlet) (Inlet) GEA01114 Figure 1 - Magnetron Fan and Damper Airflow GEA01123 Figure 2 - Convection Fan Airflow – 12 –...
  • Page 15 GEA01122 Figure 3 - Vent Fan Airflow – 13 –...
  • Page 16 Notes – 14 –...
  • Page 17 Notes – 15 –...

  • Page 18: Operation Maps

    Function Relay Cut back only if cavity temperature > 450° F. start Upper Heater, RY8 Ceramic Upper Heater, RY3 Halogen Lower Heater, RY9 Ceramic Upper Heater, RY7 Sheath Oven Lamp Fan Motor (for MAG) Convection RY16 When cavity Temp. exceeds 425° F. Motor Vent Fan, RY11...
  • Page 19 Cut back only if cavity > 450 ° F. Function Relay start Upper Heater, RY8 Ceramic Upper Heater, RY3 Halogen Lower Heater, RY9 Ceramic Upper Heater, RY7 Sheath Oven Lamp Fan Motor (for MAG) Convection RY16 When cavity Temp. exceeds 425° F. Motor Vent Fan, RY11...
  • Page 20 Function Relay reached target temp. start Upper Heater, Ceramic Upper Heater, Halogen Lower Heater, Ceramic Upper Heater, Sheath Oven Lamp Fan Motor (for MAG) Convection Ry16 When cavity Temp. exceeds 425° F. Motor Vent Fan, Ry11 High Vent Fan, Ry12 When base thermostat is actuated.
  • Page 21 reached target temp. Function Relay start Upper Heater, Ceramic Upper Heater, Halogen Lower Heater, Ceramic Upper Heater, Sheath Oven Lamp Fan Motor (for MAG) Convection RY16 Motor Vent Fan, RY11 High Vent Fan, RY12 When hood TCO is actuated. Vent Fan, RY13 Slow Damper...
  • Page 22 Function Relay start Upper Heater, RY8 Ceramic Upper Heater, RY3 Halogen Lower Heater, RY9 Ceramic Upper Heater, RY7 Sheath Oven Lamp Fan Motor (for MAG) sensor Convection RY16 After 250 seconds from sensor sensing point sensing point Motor Vent Fan, RY11 High Vent Fan,...
  • Page 23 Function Relay start Upper Heater, Ceramic Upper Heater, Halogen Lower Heater, Ceramic Upper Heater, Sheath Oven Lamp Fan Motor (for MAG) Convection Ry16 Motor Vent Fan, Ry11 High Vent Fan, Ry12 When hood TCO is actuated. Vent Fan, Ry13 Slow Damper Ry10 Damper open...

  • Page 24: Inrush Control And Damper Operation Map

    Halogen Heater Inrush Control Magnetron Inrush Control start point start point Halogen Heater Relay Relay (RY3) (RY2) Monitor Resistor Relay (RY4) 100 ms 1 sec. (RY5) 60 ms 1 sec. Damper Open Damper Closed sensing point sensing point Damper Damper Switch Switch Damper...

  • Page 25: Load Operation Map

    Load Relay Microwave Microwave Speedcook Oven/Bake Oven/Bake Warm Warm Ventilation Cook Top (Relays) (time cook) (sensor) (before (after (Crisp) (Moist) reached reached target target temp.) temp.) Upper Heater, x (a) Ceramic Upper Heater, x (a) Halogen Lower Heater, x (a) x (pl8) x (pl6) Ceramic...

  • Page 26: Speedcook Power Levels

    – 24 –...

  • Page 27: Mechanical Disassembly

    Fuse Fuse Mechanical Disassembly Precautions to be observed before and during servicing to avoid possible exposure to excessive microwave energy: A microwave emissions check should be performed prior to servicing if oven is operative. Do not operate or allow the oven to be operated with the door open. If the oven operates with the door open: 1) Instruct the user not to operate the oven.
  • Page 28 Table of Contents Serviceability with Oven Installed ........27 Grille .

  • Page 29: Serviceability With Oven Installed

    Grille Serviceability with Oven Installed 1. Remove 2 screws from the top of the oven. WARNING: Before proceeding, remove all power to the oven by turning off the appropriate circuit breaker or unplugging the power cord. Screws Screws Screws WARNING: When reassembling the product, remember to reattach all ground wires and put screws in their correct locations.

  • Page 30: Door Disassembly

    Oven Light Door Disassembly 1. Remove the door (see procedure). 1. Remove the grille (see following procedure). 2. Insert a small flat screwdriver into the gap between the choke cover and the lower right corner of the door frame, then work the screwdriver around the seal plate to free engaging parts of the choke cover.

  • Page 31: Control Panel

    Control Panel 1. Remove the grille (see previous procedure). 2. Remove 1 screw from the top center of the control panel. 3. Open the oven door. Primary Primary Primary Interlock Interlock 4. Slide the panel up to release the upper locking tabs and tilt the top of the panel out.

  • Page 32: Sub Pcb

    2. Disconnect 2 connectors. Fuse (20-Amp, In-Line) 3. Remove 4 screws from the PCB. 1. Remove the grille (see procedure). 4. Push back the bottom locking tabs, lift the PCB above the tabs, slide the top out of the upper catch, and remove. Fuse Fuse Sub PCB...

  • Page 33: High Voltage Transformer

    High Voltage Transformer Magnetron Magnetron Screws Screws 1. Remove the control panel (see procedure). Magnetron Magnetron Screws Screws GEA00997 High Voltage High Voltage Transformer Transformer Transformer GEA01015 5. Remove 4 screws and the magnetron. 2. Remove the low voltage transformers (see procedure).

  • Page 34: Capacitor And Diode

    Capacitor and Diode 4. Remove 1 screw from the capacitor mounting bracket and lift the bracket up to disengage the WARNING: Always be certain the capacitor is bottom tab from the chassis. Remove the discharged before servicing. Mechanically bracket and capacitor. discharge by placing an insulated handle 5.

  • Page 35: Cavity Tco

    Cavity TCO 2. Remove 8 screws, lower the bottom plate, disconnect the cooktop light wire leads, and 1. Remove the grille (see procedure). remove the bottom. 2. Remove the cover panel. Screws Screws Screws Convection Convection Turntable Turntable Fan Cover Fan Cover Harness Harness...

  • Page 36: Serviceability With Oven Removed

    Serviceability with Oven Removed WARNING: Before proceeding, remove all power to the oven by turning off the appropriate circuit breaker. WARNING: When reassembling the product, remember to reattach all ground wires and put screws in their correct locations. The oven must be removed from the installation to allow servicing of internal components.

  • Page 37: Outer Case

    Outer Case 1. Remove the grille (see procedure). Damper Outlet Door Damper Outlet Door 2. Remove 2 screws and the front vent cover (see procedure). 3. Remove 7 screws and the power cord access plate from the top of the oven outer case. Screw Screw Hinge Pin Stop...

  • Page 38: Vent Fan Capacitor

    Vent Fan Capacitor 5. Disconnect the wiring from the fan motor. 1. Remove the outer case (see procedure). NOTE: Capacitor wire leads have locking tabs that must be depressed to be disconnected. DEPRESS LOCKING TAB Convection Fan Convection Fan Convection Fan 2.

  • Page 39: Thermistor

    Ceramic Heat Heater Reflector Halogen Metal Tabs Heater GEA01008 8. Disconnect the heater wiring. Screws Screws Caution: Do not touch the halogen heater with GEA01006 bare hands. Touching the halogen heater with bare hands may cause heater failure. 5. Remove 7 screws from the exhaust duct and position to access the heat shield.

  • Page 40: Humidity Sensor

    Humidity Sensor Humidity Sensor Humidity Sensor Screws Screws Cavity TCO Cavity TCO Cavity TCO Screws Screws Screws Screw Screw Screw Thermistor Thermistor GEA01007 GEA00988 4. Remove 2 screws and the humidity sensor. 4. Remove 2 screws and the thermistor. Humidity Sensor 1.

  • Page 41: Troubleshooting

    Troubleshooting Table of Contents Fault Codes ........... . 40 Diagnosing Cooking Problems .

  • Page 42: Fault Codes

    Fault Codes remain inoperable until the control is reset. This can be done by removing power (turning off the circuit) to the unit for 1 minute. Replacing the humidity sensor will not cure this situation if it was due to electrical “noise.” Diagnosing Cooking Problems An important part of diagnosing any consumer cooking concern is listening carefully to the...

  • Page 43: Food Items Appear To Be Overcooked Or Burned

    speedcook operation, all fan motors must If the water temperature rose but did not reach the operate (vent fan, convection fan, and 28° F minimum difference, suspect a problem with magnetron fan). Improper airflow can cause the line voltage (test under full load), voltage the thermal cut-outs (TCOs) to open.

  • Page 44: Unit Dead (Blank Display) (Diagnostic Chart)

    Unit Dead (Blank Display) Check for continuity between line and neutral on power cord. Is there continuity? Perform Low Check the following Voltage for an open: Transformer Test. Fuse Does low voltage Repair or replace. Cavity TCO transformer pass test? Magnetron TCO All OK? Replace main...

  • Page 45: Speedcook (Diagnostic Chart)

    Speedcook Note: Oven must be at room temperature at the start of Speedcook load test. Select Speedcook Manual cook time 2 minutes. Power: U=L L=L Do both Does microwave Does unit turn off Place neon in oven. microwave and Normal. cycle at correct at 2 minutes? Press start.

  • Page 46: Microwave (Diagnostic Chart)

    Microwave Place standard test load in oven. Perform Control Program time cook Press start button. Check interlocks. Replace main Panel Test. for 30 seconds. Repair or replace PCB. Do fan and lights interlock. Interlocks OK? Pass test? Does oven start come on? without pushing start button?

  • Page 47: Oven/Bake Under Temperature (Diagnostic Chart)

    Oven/Bake Under Temperature Set Oven/Bake for 250° F. See Display Does Not Operate Does preheat Correctly chart. display? Perform Damper Check Thermistor. Do sheath and Replace Door Test. lower heaters thermistor. Thermistor OK? come on? Pass test? Replace main Repair or replace Check resistance PCB.

  • Page 48: Oven/Bake Over Temperature (Diagnostic Chart)

    Oven/Bake Over Temperature Set Oven/Bake for 250° F. Check relay RY7 Does lower heater Press start. on sub PCB. Replace main Normal. cycle off at PCB. 250° F? Does upper heater cycle off Is relay stuck at 250° F? closed? Check relay RY9 Grounded heater Check thermistor...

  • Page 49: Cooktop Light Does Not Illuminate In Bright And/Or Night Mode Or Does Not Turn Off (Diagnostic Chart)

    Cooktop Light Does Not Illuminate in BRIGHT and/or NIGHT Mode or Does Not Turn Off Attempt to turn off Attempt to turn on cooktop light using cooktop light using Surface Light Surface Light button. Normal operation. button. Does cooktop light turn Did it turn off? on and stay on? Cooktop light illuminates only...

  • Page 50: Vent Fan Does Not Operate In One Or Both Speeds Or Does Not Turn Off (Using Vent Fan Button) (Diagnostic Chart)

    Vent Fan Does Not Operate in One or Both Speeds or Does Not Turn Off (Using Vent Fan Button) Note: This oven is equipped with an Automatic Fan feature. If cabinet or cavity temperature is high, the vent fan will automatically operate at a low speed. The fan cannot be turned off and will stop automatically.

  • Page 51: Heater Shorted To Ground

    Heater Shorted to Ground Some components are switched on the neutral side; therefore, it is possible to bypass the relay and close the heater circuit by shorting it to ground. If a heater shorts to ground, it will l a i energize any time the door is closed.

  • Page 52: Humidity Sensor Test

    Humidity Sensor Test Voltage Compensation Test Note: A voltage compensation test should be conducted any time the main PCB is changed. To perform a • An open or shorted humidity sensor will cause voltage compensation test, do the following: fault code F4. •...

  • Page 53: Damper Door Test

    Damper Door Test Thermal Cut-Outs (TCOs) To test damper doors: The following chart lists each TCO, the temperature it will open at, and the temperature it 1. Select Warm/Reheat mode. will close at. Use an ohmmeter to check for an open TCO.

  • Page 54: Interlock System Test

    Interlock System Test Continuity must show: • Door closed: infinite ohms. 1. Remove the grille and discharge the capacitor. • Door open: 0 ohms. 2. Check 20-amp fuse for continuity and proper size. Do not use any fuse other than 20 amp. C) Remove the 20-amp fuse - circuit must open (infinite ohms).

  • Page 55: Component Locator View

    Heading Component Locator View Damper Damper Assembly Assembly Damper Door Damper Door Sensor Switch Sensor Switch Magnetron TCO Magnetron TCO Magnetron Magnetron Low Voltage Low Voltage High Voltage High Voltage Transformer Transformer Transformer Transformer Low Voltage Low Voltage Transformer 2 Transformer 2 Hood TCO Hood TCO...
  • Page 56 Heat Shield Heat Shield Humidity Humidity Vent Fan Vent Fan Sensor Sensor Cavity Cavity Convection Convection Thermistor Thermistor GEA01118 Figure 5 - Upper Components Sheath Sheath Sheath Ceramic Ceramic Ceramic Heater Heater Heater Heater Heater Heater Oven Oven Oven Halog Halogen Halogen Light...
  • Page 57 Sub PCB Sub PCB 12 Amp Fuse 12 Amp Fuse Magnetron Magnetron 20 Amp Fuse 20 Amp Fuse Capacitor Capacitor and Diode and Diode GEA01128 Figure 7 - Sub PCB and Magnetron Compartment Turntable Turntable Motor Motor Lower Ceramic Lower Ceramic Heater Heater Figure 8 - Lower Heater and Turntable Motor...
  • Page 58 Control Control Panel Panel Main PCB Main PCB Primary Primary Interlock Interlock Wire Wire Leads Leads Interlock Interlock Monitor Monitor Door Sensing Door Sensing (Secondary Interlock) (Secondary Interlock) GEA01120 Figure 9 - Control Panel, Main PCB, and Interlocks – 56 –...

  • Page 59: Schematics And Wiring Diagrams

    Schematics and Wiring Diagrams 12.8 Ω 2.5 Ω 22.5Ω B - Y 32 Ω B - W 18 Ω W - G 24 Ω G - R 7 Ω 02.05,2 36.6 Ω – 57 –...
  • Page 60 ,2001 – 58 –...

  • Page 61: Strip Circuits

    Strip Circuits 3 2 1 1 2 3 6 5 4 4 5 6 WHITE YELLOW TO UPPER CERAMIC HTR. TO TWO PIN CONNECTOR (TO UPPER SHEATH HTR.) YELLOW TO PRIMARY INTERLOCK SWITCH TO CAVITY TCO TO MAIN PCB (CN8) TO PRIMARY INTERLOCK SWITCH BLACK BLACK...
  • Page 62 FUSE FUSE RY16 RY16 RY13 RY13 RY12 RY12 R R Y7 RY7 R R Y8 RY11 RY11 CN10 CN10 GEA01113 – 60 –...
  • Page 63 c t i c t i y t i t s i y t i g i l RY15 RY15 RY10 RY10 CN10 CN10 RY14 RY14 GEA01112 – 61 –...

  • Page 64: Illustrated Parts Breakdown

    Illustrated Parts Breakdown – 62 –...
  • Page 65 – 63 –...
  • Page 66 – 64 –...
  • Page 67 – 65 –...
  • Page 68 – 66 –...
  • Page 69 View Part Number Description Quantity WB36X10181 LAMP REFLECTOR ASS’Y WB36X10176 LAMP 12V 20W WB36X10177 LAMP,HALOGEN,10W WB36X10180 REFLECTOR ASS’Y WB36X10182 REFLECTOR ASS’Y 1200 WB56X10207 OUTER CASE WH 1203 WB06X10216 LATCH BRACKET 1205 WB06X10308 COVER, POWER CORD 1206 WB18X10150 POWER CORD ASS’Y 1208 WB06X10313 MOUNT,VENT MOTOR COVER...
  • Page 70 View Part Number Description Quantity 2944 WB01X10124 NUT ASS’Y 3020 WB21X10055 HEATER 4009 WB06X10034 FUSE HOLDER 5001 WB38X10024 FAN BLADE 6006 WB27X10037 DIODE 7001 WB24X10044 SENSOR ASS’Y 9001 WB56X10204 MOUNTING PLATE ASS’Y 9005 WB64X10003 INSTALLATION KIT ASS’Y 9010 WB01X10125 MOUNTING BOLTS 9999 31-20960 MINI-MANUAL...

  • Page 71: Quiz

    Quiz 6. Thermal protection is initiated at what 1. Which heaters will be operating when using a preselected Speedcook setting? temperature? a. The upper halogen only. a. 600° F. b. 650° F. b. The upper and lower ceramic only. c. The sheath and lower ceramic only. c.
  • Page 72 Notes – 70 –...
  • Page 73 Notes – 71 –...
  • Page 74 – 72 –...

This manual is also suitable for:

Sca1001Advantium 120 sca1000Advantium 120 sca1001

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