Panasonic NN-SU656W
Panasonic NN-SU656W Countertop Microwave Oven User Manual
Model: NN-SU656W | Brand: Panasonic
Introduction
This manual provides detailed instructions for the safe and efficient operation of your Panasonic NN-SU656W 1.3 Cu. Ft. 1100W Countertop Microwave Oven. Please read all instructions carefully before using the appliance and retain this manual for future reference.

Figure 1: Front view of the Panasonic NN-SU656W Countertop Microwave Oven, showcasing its white finish and control panel.
What's in the Box
- Panasonic NN-SU656W Countertop Microwave Oven
- Glass Turntable
- Roller Ring
- User Manual (this document)
Key Features
- 1100W High Power: Ensures fast and efficient cooking.
- 1.3 Cu. Ft. Capacity: Spacious interior for various dish sizes.
- One-Touch Genius Sensor: Automatically adjusts power levels and cooking/reheating times for optimal results.
- 7 Pre-programmed Settings: Convenient auto menus for popular foods.
- Auto Defrost: Simplifies defrosting by weight.
- Keep Warm Function: Maintains food temperature for up to 30 minutes.
- Child Lock: Enhances safety by preventing unintended operation.
- Quick Minute: Adds 30 seconds of cooking time with a single touch (up to 5 minutes).
Setup
1. Placement
Place the microwave oven on a flat, stable surface that is strong enough to support its weight. Ensure adequate ventilation by leaving at least 4 inches (10 cm) of space around the sides, back, and top of the oven. Do not block any ventilation openings.
Avoid placing the oven near heat sources such as stoves or radiators, or in areas with high humidity.
2. Power Connection
Plug the power cord into a grounded 120V / 60Hz electrical outlet. Ensure the outlet is dedicated for the microwave oven to prevent circuit overload.

Figure 2: Dimensions of the Panasonic NN-SU656W Microwave Oven: 20.43" W x 16.62" D x 12.37" H.
Operating Instructions
Control Panel Overview

Figure 3: Close-up of the Panasonic NN-SU656W control panel, showing the digital display, number pad, and function buttons.
- Digital Display: Shows time of day, cooking time, and program settings.
- Number Pad (1-9, 0): Used to enter cooking times, weights, and program selections.
- Quick 30: Adds 30 seconds of cooking time with each press.
- Popcorn: Pre-programmed setting for popcorn (3 levels).
- Auto Reheat: Sensor reheat for 1-4 servings.
- Auto Cook: Sensor cook for 1-7 categories of food.
- Power Level: Adjusts microwave power (10 levels).
- Auto Defrost: Defrosts food by weight (lb/kg).
- Serving/Weight: Used with Auto Cook/Reheat and Auto Defrost.
- More/Less: Adjusts sensor cooking/reheating time.
- Timer: Sets kitchen timer.
- Clock: Sets the time of day.
- Stop/Reset: Stops cooking or clears settings.
- Start: Begins cooking or confirms settings.
Basic Operation (Time Cook)
- Place food in a microwave-safe dish on the glass turntable.
- Close the oven door securely.
- Enter the desired cooking time using the number pad (e.g., "1", "3", "0" for 1 minute 30 seconds).
- Press the Start button. The oven will begin cooking.
Using Quick 30
For quick heating, simply press the Quick 30 button. Each press adds 30 seconds of cooking time at full power. Press Start to begin if you've entered a time, or it will start automatically if you just press Quick 30.
Auto Cook / Auto Reheat (Genius Sensor)
The Genius Sensor automatically determines the optimal cooking or reheating time for various foods. Refer to the Auto Cook Chart inside the oven door for specific categories and serving sizes.
- Place food in the oven.
- Press the Auto Cook or Auto Reheat button repeatedly to select the desired food category or serving size.
- Press Start. The oven will automatically cook/reheat.
Auto Defrost
- Place frozen food on the turntable.
- Press the Auto Defrost button.
- Enter the weight of the food using the number pad (e.g., "1", "5", "0" for 1.5 lbs).
- Press Start. The oven will calculate and begin defrosting.
Child Lock
To activate the Child Lock, press and hold the Start button for 3 seconds until "LOCK" appears on the display. To deactivate, press and hold the Stop/Reset button for 3 seconds.
Maintenance
Cleaning
- Always unplug the oven before cleaning.
- Wipe the interior and exterior surfaces with a damp cloth and mild detergent.
- The glass turntable and roller ring can be washed in warm, soapy water or in the dishwasher.
- Do not use abrasive cleaners or harsh chemicals.
Care
- Avoid operating the oven when empty.
- Do not use metal utensils or containers in the microwave.
- Ensure the door seals are clean and free from food debris to maintain proper operation.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Oven does not start | Power cord not plugged in; Door not closed properly; Child lock activated. | Ensure plug is secure; Close door firmly; Deactivate child lock. |
| Food not cooking evenly | Food not stirred or rearranged; Incorrect power level/time. | Stir or rearrange food during cooking; Adjust power level and time as needed. |
| Display shows "E" or error code | Internal malfunction. | Unplug the oven for 30 seconds, then plug back in. If error persists, contact customer support. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Panasonic |
| Model Number | NN-SU656W |
| Oven Capacity | 1.3 Cu. Ft. |
| Cooking Power | 1100W |
| Power Supply | 120V / 60Hz |
| Power Consumption | 1500W |
| Exterior Dimensions (H x W x D) | 12 3/8" x 20 7/16" x 16 5/8" (31.4 cm x 51.9 cm x 42.2 cm) |
| Cavity Dimensions (H x W x D) | 9 13/16" x 13 13/16" x 15 3/16" (24.9 cm x 35.1 cm x 38.6 cm) |
| Turntable Diameter | 315mm |
| Weight | 35.0 lb / 16.0 kg |
| Color | White |
| Control Panel | Membrane |
| Power Levels | 10 (P1-P10) |
| Safety Standard | UL Compliant |
Warranty and Support
Your Panasonic NN-SU656W Microwave Oven comes with a manufacturer's protection plan. Additionally, this bundle includes a 2-Year Extended Protection Plan, offering enhanced coverage beyond the standard manufacturer's warranty.
For technical support, service, or warranty claims, please refer to the contact information provided in your warranty documentation or visit the official Panasonic support website.
For more information, visit the Panasonic Store on Amazon.
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