Whirlpool 721.663398 manual Trouble Shooting, Condition Cause Remedy

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C. TROUBLE SHOOTING

WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.

CAUTIONS

1.Check grounding before checking for trouble.

2.Be careful of the high voltage circuit.

3.Discharge the high voltage capacitor.

4.When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.

5.Do not touch any part of the circuit on the PCB since static electric discharge may damage this control panel. Always touch yourself to ground while working on this panel to discharge any static charge built up in your body. (Micom model only)

CONDITION

CAUSE

 

REMEDY

 

 

 

Microwave oven does not work.

Output power is too low.

Inserting many plugs into one outlet and using them at the

same time.

(blown fuse or breaker)

Microwave oven plug is not inserted tightly.

Low AC input voltage.

Food temperature is too low.

Avoid using other electrical appliances when you use the microwave oven.

Insert microwave oven plug securely.

Use the microwave oven at adequate line voltage.

This may not be a defect. It is possible that the food should be cooked for a longer time period.

Sparks occur.

Uneven cooking.

Using metallic ware and allowing it to touch the oven wall.

Ceramic ware trimmed in gold or silver powder is used.

Inconsistent intensity of microwave by their characteristics.

Do not use metallic ware for cooking except where noted in the cooking guide.

Do not use any type of cookware with metallic trimming.

1.Use plastic wrap or lid.

2.Stir once or twice while cooking soup, cocoa or milk, etc.

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Contents Division Basic Field Manual For Microwave Oven Page Foreword Adjust the Latch and Switch Closing Adjustment ProceduresCheck the Door Latch and Switch Closing Test the Latch and Switch SequenceLatch Latch Board General Precautions in USE Precautions on InstallationFeatures and Specifications Trial OperationSpecifications Switch TableSchematic Diagram Overall Circuit Diagram Matrix Circuit for Touch KEY Board Operating Procedures A. Oven Control Panel Easy USE Table Measurement with the Outer Case Removed Procedure for Measuring Microwave Energy LeakageMeasuring Microwave Energy Leakage EquipmentRecord Keeping and Notification After Measurement Power Output MeasurementMeasurement with a Fully Assembled Oven Disassembly Instructions Important NotesDoor Assembly / Removal Magnetron Removal High Voltage Capacitor and Diode Removal FAN Motor Assembly / RemovalHigh Voltage Transformer Removal Removing Sensor Interlock System Interlock MechanismMonitor Switch Test Primary Interlock Switch TestSecondary Interlock Switch Test Components Test Procedure ResultsFilament Winding Primary Terminal Test and Checkout PROCEDURES, and TroubleshootingTest Procedures Components MagnetronDiode High VoltageCapacitor Level PowerRelay FAN MotorProblems Causes Checkout ProceduresCheckout Procedures for Fuse Blowing Problem B Checkout Procedures for RelayProblem a YES GoodPage Trouble Shooting Condition Cause RemedyResult ConditionCheck Fuse blows Condition Check Result Cause Remedy Condition Check ResultCause Remedy Check Result Exploded View Door Parts Controller Parts Oven Cavity Parts Latch Board Parts Interior Parts Base Plate Parts Sensor Parts No MFL30502909

721.663398 specifications

The Whirlpool 721.663398 is a versatile refrigerator designed to meet the demands of modern households while providing exceptional performance and energy efficiency. With its sleek design and innovative features, this model stands out in the realm of home appliances, offering both style and functionality.

One of the standout features of the Whirlpool 721.663398 is its spacious interior, which provides ample room for storing groceries and other food items. The refrigerator is designed with adjustable shelves that can be easily configured to accommodate various types of food and beverages, making it a practical choice for families of all sizes. Additionally, the inclusion of door bins adds to the organization, allowing for easy access to smaller items like condiments and snacks.

The refrigerator utilizes advanced cooling technology to maintain optimal temperature levels, ensuring that food remains fresh for longer periods. The adaptive cooling system responds dynamically to fluctuations in temperature, providing consistent cooling performance. This technology not only preserves food quality but also enhances energy efficiency, helping homeowners save on utility bills.

Another impressive characteristic of the Whirlpool 721.663398 is its energy-efficient design. This model is ENERGY STAR certified, meaning it meets strict energy efficiency guidelines set by the U.S. Environmental Protection Agency. Homeowners can enjoy peace of mind knowing that they are reducing their environmental footprint while benefiting from lower energy costs.

In terms of convenience, the Whirlpool 721.663398 features a modern ice maker that provides on-demand ice production, perfect for hosting gatherings or simply keeping drinks cool during hot summer days. The exterior water dispenser offers easy access to clean and filtered water, promoting hydration without the need for bottled alternatives.

The refrigerator is also designed with a user-friendly digital control panel that allows for easy temperature adjustments and settings. This intuitive interface makes managing the appliance straightforward, even for those who might not be tech-savvy.

Overall, the Whirlpool 721.663398 combines style, functionality, and energy efficiency into one cohesive appliance. Its spacious interior, advanced cooling technology, and convenient features make it an excellent choice for those seeking a reliable refrigerator that caters to the needs of modern living. Whether you're stocking up for a large family or hosting social gatherings, this refrigerator is well-equipped to handle it all.
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