Kenmore 790.74333310 Service Manual

The Kenmore 790.74333310 is a 30-inch gas range with convection oven, sealed burners, continuous grates, digital clock/timer, self-cleaning oven, storage drawer, and control lockout feature. This service manual provides detailed technical information for qualified technicians, including safety procedures, disassembly instructions, parts lists, wiring diagrams, and troubleshooting guides for diagnosis and repair.

1. Safety Information 2. Model Specifications 3. Installation Instructions 4. Component Locations 5. Disassembly Procedures 6. Electrical System 7. Gas System 8. Control System 9. Troubleshooting Flowcharts 10. Error Code Definitions 11. Parts List & Exploded Views

Safety Information

WARNING: This manual is for qualified service personnel only. Disconnect electrical power and shut off gas supply before servicing. Use proper tools and personal protective equipment. Follow all local codes.

Hazard	Precaution
Electrical Shock	Disconnect power at circuit breaker. Verify with voltmeter.
Gas Leak	Check all connections with leak detection solution. No open flames.
High Temperature	Allow oven and components to cool completely before handling.
Sharp Edges	Wear cut-resistant gloves during disassembly.

Model Specifications

Model Number: 790.74333310
Type: 30" Freestanding Gas Range
Fuel Type: Natural Gas (convertible to LP)
Burners: 5 Sealed Burners (various BTU outputs)
Oven Capacity: 5.0 cu. ft. with Convection
Ignition System: Electronic Spark Ignition
Controls: Electronic Touchpad with Digital Display
Power Requirements: 120V AC, 60Hz, 15A
Dimensions (HxWxD): 46-1/2" x 29-7/8" x 28"

Installation Instructions

For initial installation or reinstallation after service.

Location: Ensure level floor with adequate clearance from combustibles.
Gas Connection: Use approved flexible gas connector. Apply pipe compound to male threads only. Test for leaks.
Electrical: Plug into grounded 3-prong outlet. Do not use extension cord.
Anti-Tip Bracket: Must be securely fastened to floor/wall per instructions.
Burner Alignment: Place grates, verify burners are centered under caps.

WARNING! Failure to install anti-tip bracket can result in range tipping, causing injury.

Component Locations

Key serviceable components and their access points.

Component	Location	Access Method
Oven Control Board	Behind rear control panel	Remove screws from top trim, lift panel.
Surface Burner Valves	Under cooktop	Lift cooktop (disconnect igniter wires first).
Bake/Broil Igniter	Inside oven at rear	Remove oven bottom panel or rear panel.
Thermal Fuse	Behind oven vent	Remove vent grille.
Convection Fan Motor	Rear of oven cavity	Remove oven rear panel.

Disassembly Procedures

Step-by-step removal of major assemblies.

Control Panel: Remove two screws at top rear of backsplash. Tilt panel forward and disconnect wiring harnesses.
Cooktop: Turn off gas. Disconnect burner igniter wires. Remove screws securing cooktop to frame. Lift carefully.
Oven Door: Open door fully. Engage hinge locks on both sides. Close door slightly and lift off.
Oven Bottom Panel: Remove screws at front edge. Slide panel out.
Back Panel: Remove all screws around perimeter. Panel may have wiring attached.

Note: Label all wires and take photos during disassembly for reassembly reference.

Electrical System

Wiring diagrams and component testing values.

Main Components: Oven Control Board (Part# WPY310991), Touchpad, Bake Igniter (3.2-3.6 Amps draw), Broil Igniter, Convection Fan Motor, Oven Light, Thermal Fuse (normally closed).

Testing: - Igniter: Measure resistance. Should be 30-110 ohms. Observe for glow when circuit energized. - Thermal Fuse: Check for continuity. Open circuit indicates blown fuse. - Gas Valve Solenoids: Check coil resistance (typically 800-1600 ohms).

Gas System

Burner pressures, orifice sizes, and leak testing.

Manifold Pressure: Natural Gas: 4.0" W.C.; LP Gas: 10.0" W.C.
Orifice Sizes (Natural Gas): Main Burner: #50; Simmer Burner: #54; Oven Burner: As specified on rating plate.
Leak Test: Apply leak detection solution to all connections with gas on. No bubbles should form.
Burner Flame: Should be steady, blue with slight yellow tips. Adjust air shutter if flame is yellow or lifting.

CAUTION! Use only factory-specified orifice kits for fuel conversion.

Control System

Operation and calibration of electronic controls.

Touchpad Calibration: Enter service mode (press BROIL and WARM for 5 seconds). Follow prompts to calibrate touch sensitivity.

Oven Temperature Calibration: In bake mode, press and hold BAKE for 6 seconds. Use +/- keys to adjust offset (-35°F to +35°F).

Control Lockout: Press and hold LOCK for 3 seconds to enable/disable.

Factory Reset: Disconnect power for 2 minutes to reset control board.

Troubleshooting Flowcharts

Diagnostic guides for common symptoms.

Symptom	First Check	Next Steps
Oven not heating	Verify igniter glow	Check gas supply, valve operation, igniter amp draw.
Uneven baking	Check oven calibration	Verify convection fan operation, burner flame pattern.
Surface burner won't light	Listen for spark	Check electrode alignment, wiring, switch continuity.
Error code on display	Refer to Error Code section	Diagnose specific sensor or component failure.
Control panel unresponsive	Check power supply	Test for 120V at outlet. Perform control reset.

Error Code Definitions

Fault codes displayed on digital readout.

F1: Oven Temperature Sensor circuit fault (open or short).
F2: Oven Temperature Sensor out of range.
F3: Oven Over-temperature condition detected.
F4: Open thermal fuse or oven vent obstructed.
F5: Control Board communication error.
F10: Fault in surface burner spark circuit.

Clearing Codes: Most codes clear automatically when fault is corrected. Disconnect power for 2 minutes to clear persistent codes.

Parts List & Exploded Views

Key replacement parts with reference numbers.

Part Number	Description	Qty
WPW1000001	Oven Control Board Assembly	1
WPW3055442	Bake Igniter	1
WPW3055443	Broil Igniter	1
WPW3100022	Surface Burner Valve (Front Left)	1
WPW3109910	Touchpad Control Panel	1
WPW3123456	Thermal Fuse	1
WPW3200011	Convection Fan Motor	1

Exploded Views: Diagrams showing assembly relationship of all parts are included in the full PDF manual.

Ordering: Use exact part number. Contact Sears Parts Direct at 1-888-826-6987 or visit searspartsdirect.com.