1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Toyomi FB 6643F InstantBoil Filtered Water Dispenser. Please read this manual thoroughly before using the appliance and retain it for future reference.
2. Safety Instructions
To prevent injury or damage, always follow basic safety precautions when using electrical appliances.
- Ensure the voltage rating on the appliance matches your local power supply.
- Do not immerse the appliance, cord, or plug in water or other liquids.
- Keep the appliance out of reach of children.
- Do not operate the appliance with a damaged cord or plug.
- Place the appliance on a stable, flat, heat-resistant surface.
- Avoid touching hot surfaces. Use handles or knobs.
- Unplug from the outlet when not in use and before cleaning.
- Do not use the appliance for purposes other than its intended use.
- Only use accessories recommended by the manufacturer.
3. Package Contents
Verify that all items are present upon unpacking:
- 1 x Toyomi FB 6643F InstantBoil Filtered Water Dispenser
- 1 x Premium Water Filter
- 1 x User Manual (this document)

Image 1: Toyomi FB 6643F InstantBoil Filtered Water Dispenser. This image shows the main unit of the water dispenser, highlighting its sleek design and primary components.
4. Setup
- Unpacking: Carefully remove all packaging materials from the dispenser.
- Placement: Place the dispenser on a stable, flat, and dry countertop, away from direct sunlight and heat sources. Ensure there is adequate ventilation around the unit.
- Filter Installation:
- Remove the water tank from the back of the unit.
- Unpack the premium water filter.
- Insert the filter into its designated slot within the water tank, ensuring it is securely seated.
- Filling the Water Tank:
- Fill the removable water tank with clean, cold tap water. Do not exceed the maximum fill line.
- Place the filled water tank back onto the dispenser, ensuring it is properly aligned and seated.
- Initial Rinse: Before first use, dispense at least 2-3 cups of hot water to rinse the internal system and filter. Discard this water.
- Power Connection: Plug the power cord into a grounded electrical outlet.
5. Operating Instructions
The Toyomi FB 6643F features a large screen with dual digital temperature and capacity display for easy operation.
- Power On: Press the power button to turn on the dispenser. The display will illuminate.
- Select Temperature: Use the temperature selection buttons to choose your desired water temperature. Available temperatures typically range from ambient to boiling.
- Select Volume: Use the volume selection buttons to choose the desired dispensing capacity. The dispenser offers 12 dispensing capacities.
- Dispense Water: Place a cup or container under the dispenser spout. Press the dispense button to start dispensing water. The dispenser will automatically stop when the selected volume is reached.
- Stop Dispensing: To stop dispensing water manually before the selected volume is reached, press the dispense button again.
- Refilling: When the water level is low, the dispenser will indicate a need for refill. Remove the water tank, fill with fresh water, and reinsert.
No official product videos are available for this section.
6. Maintenance
Regular cleaning and maintenance ensure optimal performance and longevity of your dispenser.
6.1. Cleaning the Exterior
- Unplug the dispenser before cleaning.
- Wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure no water enters the electrical components.
6.2. Cleaning the Water Tank
- Remove the water tank from the unit.
- Wash the tank with mild soap and warm water. Rinse thoroughly.
- Allow the tank to air dry completely before reassembling.
6.3. Filter Replacement
- The premium water filter should be replaced regularly, typically every 2-3 months, or as indicated by the dispenser's filter indicator (if available).
- To replace, remove the old filter from the water tank and dispose of it.
- Insert a new premium filter as described in the "Setup" section.
- Perform an initial rinse after filter replacement.
6.4. Descaling
- Over time, mineral deposits (limescale) may build up inside the heating element.
- To descale, use a descaling solution specifically designed for water dispensers or a mixture of white vinegar and water (1:1 ratio).
- Follow the descaling solution's instructions or fill the tank with the vinegar solution, let it sit for 30 minutes, then dispense a few cups.
- Rinse the system thoroughly by filling and dispensing several tanks of clean water.
7. Troubleshooting
Refer to the table below for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Dispenser not turning on. | Not plugged in; power outage; faulty outlet. | Check power cord connection; verify power supply; try a different outlet. |
| Water not dispensing. | Water tank empty; tank not seated correctly; dispensing button not pressed. | Refill water tank; ensure tank is properly installed; press dispense button firmly. |
| Water not hot enough. | Incorrect temperature setting; limescale buildup. | Adjust temperature setting; descale the unit as per maintenance instructions. |
| Slow water flow. | Clogged filter; limescale buildup in spout/heating element. | Replace water filter; descale the unit. |
| Unusual taste/odor in water. | New filter (initial taste); filter needs replacement; tank needs cleaning. | Perform initial rinse; replace filter; clean water tank thoroughly. |
If the problem persists after attempting these solutions, please contact customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model | FB 6643F |
| Brand | Toyomi |
| Capacity | 4.3 Liters |
| Wattage | 2600 watts |
| Material | Stainless Steel (Premium Thick 316 Medical Grade Heating Element) |
| Dimensions (Product) | 25D x 45W x 35H centimetres |
| Weight | 5 Kilograms |
| Filtration System | Special 4-stage water filtration system |
| Display | Large screen with dual digital temperature and capacity display |
| Dispensing Capacities | 12 options |
9. Warranty and Support
For warranty information and customer support, please refer to the warranty card included with your product or visit the official Toyomi website. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: Toyomi
Model: FB 6643F
For further assistance, please contact Toyomi customer service.





