1. Introduction
Thank you for choosing the iTOMA YH4025 Nugget Ice Maker Machine. This appliance is designed to produce chewable pellet ice, also known as nugget ice, which melts slowly and chills beverages effectively. It is ideal for various settings including homes, kitchens, offices, and for entertaining at parties or barbecues.
Please read this manual thoroughly before operating your new ice maker to ensure safe and efficient use. Keep this manual for future reference.

Image 1.1: The iTOMA YH4025 Nugget Ice Maker Machine. This image shows the compact and modern design of the ice maker, suitable for various kitchen or bar setups.
2. Important Safety Instructions
To reduce the risk of fire, electric shock, or injury, always follow these basic safety precautions:
- Read all instructions before using the appliance.
- Ensure the appliance is properly grounded.
- Do not immerse the power cord, plug, or any part of the appliance in water or other liquids.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug the appliance from the outlet when not in use, before cleaning, or before adding/removing parts.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner.
- Do not use outdoors. This appliance is for indoor household use only.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Use only potable (drinkable) water in the water reservoir.
- Do not block any ventilation openings. Ensure adequate air circulation around the unit.
- Do not use the appliance for anything other than its intended use.
3. Product Components
Familiarize yourself with the parts of your iTOMA YH4025 Nugget Ice Maker:
- Ice Maker Unit: The main body of the appliance.
- Control Panel: Located on the top, with Power and Clean buttons and indicator lights.
- Water Tank: Reservoir for water, located inside the unit. Capacity: 1.3 Liters.
- Ice Basket: Removable basket to collect produced ice. Capacity: 0.8 kg.
- Ice Scoop: For convenient serving of ice.
- Drainage Hose: Located at the back of the unit for water drainage during cleaning.
- Ice Full Sensor: Detects when the ice basket is full.
4. Setup
- Unpack the Ice Maker: Carefully remove all packaging materials and inspect the unit for any damage. Retain the packaging for future transport or storage.
- Placement: Place the ice maker on a stable, level surface away from direct sunlight and heat sources. Ensure there is at least 6 inches (15 cm) of space around the unit for proper ventilation.
- Initial Cleaning: Before first use, it is recommended to clean the unit. Refer to the "Maintenance and Cleaning" section for detailed instructions on the self-cleaning function.
- Connect Power: Plug the power cord into a grounded electrical outlet. Ensure the voltage matches the appliance's requirements (220V as per specifications).
5. Operating Instructions
Operating your iTOMA YH4025 Nugget Ice Maker is straightforward:
- Fill the Water Tank: Open the lid and fill the water tank with potable water up to the maximum fill line. Do not overfill.
- Power On: Press the "Power" button on the control panel. The ice maker will begin its ice production cycle.
- Ice Production: The machine will start producing ice in approximately 10 minutes. It can make up to 0.6 kg of ice in the first hour.
- Ice Full Detection: When the ice basket reaches its full capacity (0.8 kg), the "Ice Full" indicator light will illuminate, and the machine will automatically stop ice production. The "Ice Making" button will flash for 60 seconds before stopping.
- Serve Ice: Use the provided ice scoop to remove ice from the basket. Once ice is removed, the machine will resume ice production if the water tank has sufficient water.
- Power Off: To turn off the ice maker, press the "Power" button again.

Image 5.1: The iTOMA YH4025 Nugget Ice Maker producing ice. This image illustrates the ice maker in an operational setting, with ice visible in the basket and a drink prepared with the nugget ice.
6. Maintenance and Cleaning
Regular cleaning ensures optimal performance and longevity of your ice maker.
6.1 Self-Cleaning Function
The iTOMA YH4025 features a convenient self-cleaning cycle:
- Ensure the water tank is filled with clean water.
- Press and hold the "Clean" button for 3 seconds. The self-cleaning cycle will begin.
- The cleaning cycle lasts for approximately 3 minutes. The LED indicator will turn off once the cleaning is complete.
- After the cycle, turn off the power.
- Locate the drainage hose at the back of the unit. Place the end of the hose over a sink or bucket to drain the water completely.
- Once drained, secure the drainage hose back in its position.
6.2 Regular Cleaning
- Exterior: Wipe the exterior of the ice maker with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ice Basket: Remove the ice basket and wash it with warm, soapy water. Rinse thoroughly and dry before placing it back into the unit.
- Interior: Periodically wipe the interior surfaces with a clean, damp cloth. For stubborn stains, a mild detergent can be used, followed by thorough rinsing with clean water.
- Storage: If storing the ice maker for an extended period, ensure it is completely dry and drained. Store in a cool, dry place.
7. Troubleshooting
If you encounter issues with your iTOMA YH4025 Nugget Ice Maker, refer to the following table for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No ice production | No water in the tank Power not connected Ambient temperature too high | Fill water tank Check power cord and outlet Move unit to a cooler location |
| Ice not forming correctly / Small ice | Water temperature too high Poor ventilation Mineral buildup | Use colder water Ensure adequate space around unit Perform self-cleaning cycle |
| "Ice Full" indicator always on | Ice basket is full Ice sensor is blocked or dirty | Remove ice from basket Clean the ice sensor area |
| Water leakage | Drainage hose not properly secured Unit not level | Check and secure drainage hose Place unit on a level surface |
| Unusual noise | Normal operation sounds Unit not level Internal component issue | Some sounds are normal during operation Ensure unit is on a level surface Contact customer support if noise persists and is abnormal |
If the problem persists after trying these solutions, please contact iTOMA customer support.
8. Specifications
| Model: | YH4025 |
| Brand: | iTOMA |
| Product Dimensions (D x W x H): | 11.6" x 8.86" x 11.2" (29.5 cm x 22.5 cm x 28.4 cm) |
| Water Tank Capacity: | 1.3 Liters |
| Ice Storage Capacity: | 0.8 kg |
| Ice Production Rate: | Approximately 0.6 kg per hour (first hour); ice in 10 minutes |
| Voltage: | 220V |
| Refrigerant: | R600a |
| Included Components: | Ice Basket, Ice Scoop |
9. Warranty and Support
iTOMA is committed to providing quality products. For warranty information, please refer to the warranty card included with your product or visit the official iTOMA website. If you have any questions, concerns, or require technical assistance, please contact iTOMA customer support.
You can find more information and contact details on the official iTOMA store page: iTOMA Store on Amazon