Introduction
Thank you for purchasing the Sharp R843INW 3-in-1 Microwave Oven. This appliance combines microwave, grill, and convection cooking functions, offering versatility and convenience for your kitchen. To ensure safe and optimal performance, please read this manual thoroughly before operating the appliance and retain it for future reference.
Important Safety Instructions
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, injury to persons, or exposure to excessive microwave energy.
- Read all instructions before using the appliance.
- Do not attempt to operate this oven with the door open as this can result in harmful exposure to microwave energy.
- Do not place any object between the oven front face and the door or allow soil or cleaner residue to accumulate on sealing surfaces.
- Do not operate the oven if it is damaged. It is particularly important that the oven door closes properly and that there is no damage to the: (1) door (bent), (2) hinges and latches (broken or loosened), (3) door seals and sealing surfaces.
- Only qualified service personnel should adjust or repair the oven.
- Ensure the appliance is properly grounded.
- Do not use corrosive chemicals or vapors in this appliance.
- Do not heat liquids or other foods in sealed containers since they are liable to explode.
- Always use oven mitts when handling hot items from the oven.
Product Overview
The Sharp R843INW is a versatile appliance designed for various cooking needs. Below are key visual references for the product and its control panel.

Figure 1: Front view of the Sharp R843INW 3-in-1 Microwave Oven, showcasing its sleek silver design and black door.

Figure 2: Close-up view of the control panel, featuring a digital display, rotary dial, and various function buttons for microwave, grill, and convection modes, along with automatic menu options.
Key Components:
- Control Panel: Digital display, function buttons, and rotary dial for setting time, power, and selecting programs.
- Oven Cavity: 25-liter capacity, made of stainless steel for durability and easy cleaning.
- Glass Turntable: Removable for easy cleaning, ensures even cooking. Diameter: 301 mm.
- Grill Rack: Used for grilling and convection cooking.
- Oven Door: Features a safety interlock system.
- Interior Light: Illuminates the oven cavity during operation.
Setup
- Unpacking: Carefully remove the oven and all packing materials. Check for any damage.
- Placement: Place the oven on a flat, stable surface that can support its weight (18.2 kg). Ensure adequate ventilation around the oven. Maintain a minimum of 20 cm clearance above the oven, 10 cm at the rear, and 5 cm on each side.
- Power Connection: Plug the power cord into a grounded electrical outlet (240 Volts). Do not use extension cords.
- Initial Setup: Before first use, clean the interior with a damp cloth. Place the turntable and turntable ring inside the oven cavity.
Operating Instructions
1. Setting the Clock
- Press the "Clock/Kitchen Timer" button once.
- Turn the rotary dial to set the hour. Press "Clock/Kitchen Timer" again.
- Turn the rotary dial to set the minutes. Press "Clock/Kitchen Timer" to confirm.
2. Microwave Cooking
- Place food in a microwave-safe container on the turntable.
- Close the door.
- Press the "Micro. Power" button repeatedly to select desired power level (P100, P80, P60, P40, P20 - 5 levels available).
- Turn the rotary dial to set the cooking time.
- Press "Start/+30sec" to begin cooking.
3. Grill Cooking
- Place food on the grill rack.
- Press the "Grill/Combi" button once for grill mode.
- Turn the rotary dial to set the cooking time.
- Press "Start/+30sec" to begin.
4. Convection Cooking
- Press the "Conv.(°C)" button repeatedly to select the desired convection temperature.
- Turn the rotary dial to set the cooking time.
- Press "Start/+30sec" to begin. The oven will preheat if necessary.
5. Automatic Programs (Auto Menu)
The oven features 10 pre-set automatic programs for common dishes, simplifying cooking.

Figure 3: The Sharp R843INW oven in use, demonstrating its spacious interior with a pizza being cooked, highlighting its convection and grill capabilities.
- Press the "Auto Menu" button.
- Turn the rotary dial to select the desired program (e.g., Pizza, Reheat, Potato, Meat, Vegetable, Fish, Pasta, Soup, Cake, Chicken).
- Press "Start/+30sec" to confirm and start.
Maintenance and Cleaning
Regular cleaning helps maintain the performance and longevity of your oven.
- Before Cleaning: Always unplug the oven from the power outlet.
- Oven Interior: Wipe the interior with a damp cloth after each use. For stubborn stains, use a mild detergent. Do not use abrasive cleaners or steel wool.
- Oven Exterior: Clean the exterior with a soft, damp cloth.
- Turntable and Ring: The glass turntable and turntable ring can be washed in warm soapy water or in a dishwasher. Ensure they are completely dry before placing them back in the oven.
- Door Seals: Keep the door seals clean to ensure proper closure and efficient operation.
Troubleshooting
Refer to the table below for common issues and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Oven does not start | Power cord not plugged in; Door not closed properly; Fuse blown or circuit breaker tripped. | Ensure plug is firmly in outlet; Close door securely; Check household fuse/circuit breaker. |
| Food not cooking evenly | Food not stirred/rotated; Turntable not rotating. | Stir or rotate food during cooking; Ensure turntable and ring are correctly placed and clean. |
| Light not working | Bulb needs replacement. | Contact qualified service personnel for bulb replacement. |
| Excessive steam from door | Normal during cooking, especially with high moisture content foods. | This is normal and not a fault. Wipe door after use. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Sharp |
| Model Number | R843INW |
| Capacity | 25 Litres |
| Microwave Power | 900 Watts |
| Grill Power | 1100 Watts |
| Convection Power | 2500 Watts (as per product title) |
| Voltage | 240 Volts |
| Product Dimensions (L x W x H) | 40 x 52 x 30 cm |
| Weight | 18.2 Kilograms |
| Turntable Size | 301 mm |
| Material | Stainless Steel |
| Special Features | 5 Power Levels, 10 Automatic Programs, Interior Light, Timer |
Warranty and Support
Your Sharp R843INW Microwave Oven comes with a standard manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions.
For technical support, service, or to order replacement parts, please contact Sharp customer service. Contact information can typically be found on the Sharp official website or on your product's packaging.





