1. Introduction
This manual provides essential information for the safe and effective use of your hygger Aquarium Heater HG115. This 500W model is designed to maintain a stable water temperature in aquariums ranging from 66 to 135 gallons, suitable for both freshwater and saltwater environments. Please read these instructions thoroughly before installation and operation.
Image 1: hygger Aquarium Heater HG115 (500W) main unit and controller.
Video 1: Overview of the hygger Aquarium Heater in an aquarium environment, demonstrating its function.
2. Important Safety Instructions
To prevent injury, basic safety precautions should be observed, including the following:
- Read and follow all safety instructions and all notices on the appliance.
- DANGER – To avoid possible electric shock, special care should be taken since water is used in the use of aquarium equipment. For each of the following situations, do not attempt repairs yourself; return the appliance to an authorized service facility for service or discard the appliance.
- If the appliance falls into the water, DO NOT reach for it. First, unplug it and then retrieve it. If electrical components get wet, unplug the appliance immediately.
- Carefully examine the appliance after installation. It should not be plugged in if there is water on parts not intended to be wet.
- Do not operate any appliance if it has a damaged cord or plug, or if it is malfunctioning or has been dropped or damaged in any manner.
- To avoid the possibility of the appliance plug or receptacle getting wet, position the aquarium stand and tank to one side of a wall-mounted receptacle to prevent water from dripping onto the receptacle or plug. A “drip loop” should be arranged by the user for each cord connecting an aquarium appliance to a receptacle. The “drip loop” is the part of the cord below the level of the receptacle, or the connector if an extension cord is used, to prevent water from traveling along the cord and coming into contact with the receptacle. If the plug or receptacle does get wet, DO NOT unplug the cord. Disconnect the fuse or circuit breaker that supplies power to the appliance. Then unplug and examine for the presence of water in the receptacle.
- Close supervision is necessary when any appliance is used by or near children.
- To avoid injury, do not contact moving parts or hot parts such as heaters, reflectors, lamp bulbs, and the like.
- Always unplug an appliance from an outlet when not in use, before putting on or taking off parts, and before cleaning. Never yank cord to pull plug from outlet. Grasp the plug and pull to disconnect.
- Do not use an appliance for other than intended use. The use of attachments not recommended or sold by the appliance manufacturer may cause an unsafe condition.
- Do not install or store the appliance where it will be exposed to the weather or to temperatures below freezing.
- Ensure the appliance is securely installed before operating it.
- Read and observe all important notices on the appliance.
3. Setup Instructions
3.1 Unpacking and Components
Carefully remove all components from the packaging. Verify that all parts are present: heater unit, external controller, suction cups, and mounting bracket.
Video 2: Unboxing and showing the components of the hygger Aquarium Heater.
3.2 Heater Placement
The heater unit must be fully submerged in water. It is recommended to place the heater at a 30-45° angle within the aquarium or sump. Use the provided suction cups and mounting bracket to secure the heater firmly to the tank wall. Ensure the water level sensor on the heater is always submerged.
Image 2: Diagram illustrating the heater unit, external controller, and indicator lights.
3.3 Controller Connection
Connect the heater unit to the external digital LED display controller. The controller should be mounted outside the aquarium, in a dry location, using its own suction cups or by hanging it. Ensure the power cord forms a drip loop to prevent water from reaching the electrical outlet.
Video 3: Demonstration of installing the heater in a sump and connecting the controller.
4. Operating Instructions
4.1 Digital LED Display Controller
The external controller features a digital LED display that shows the current water temperature, the set temperature, and the current working power (wattage). It also has indicator lights:
- Red Light: Indicates the heater is actively heating the water.
- White Light: Indicates the water temperature has reached the set temperature and the heater is maintaining it.
Image 3: Detailed view of the digital LED display controller, showing temperature, power, and indicator lights.
4.2 Setting the Temperature
Press the 'SET' button on the controller to adjust the target temperature. The adjustable temperature range is between 59°F and 93°F (15°C and 34°C). Each press of the 'SET' button will cycle through the temperature settings. Once your desired temperature is displayed, stop pressing the button, and the setting will be saved automatically.
Video 4: Demonstration of the digital display showing current and set temperatures.
4.3 Smart Memory Function
The heater is equipped with a memory function. In the event of a power outage, the heater will remember the last set temperature and automatically resume heating to that setting once power is restored. There is no need to manually reset the temperature.
Image 4: Illustration of the Smart Memory Function, showing temperature retention after a power outage.
5. Protection Features
The hygger Aquarium Heater incorporates multiple intelligent protection systems to ensure safety and prevent damage to your aquatic environment.
- Off-Water Warning: If the heater is not completely submerged in water, the display will flash "auto shut off" and the heater will automatically stop heating to prevent dry burning.
- Overheating Warning: If the water temperature exceeds 95°F (35°C), the display will flash "HH" and the heater will automatically stop heating to prevent harm to aquatic life.
- Low Temperature Warning: If the water temperature drops below 58°F (14°C), the display will flash "LL" and an alarm will sound, indicating a potential issue with heating.
Image 5: Visual representation of the 'HH' (overheating) and 'LL' (low temperature) error codes on the display.
Image 6: Illustration of the anti-dry running function and internal construction materials.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your aquarium heater.
- Cleaning: Before cleaning, always unplug the heater from the power outlet and allow it to cool completely. Gently wipe the heater unit with a soft cloth to remove any algae or mineral buildup. Do not use harsh chemicals or abrasive materials.
- Water Circulation: For more accurate temperature distribution and heating efficiency, it is recommended to use the heater in conjunction with a water circulation system (e.g., a powerhead or filter outflow).
- Inspection: Periodically inspect the power cord and heater unit for any signs of damage, cracks, or wear. If any damage is observed, discontinue use immediately and contact customer support.
7. Troubleshooting
If you encounter issues with your hygger Aquarium Heater, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater not heating / Display off | No power; Heater reached set temperature; Heater not fully submerged. | Check power connection; Verify set temperature; Ensure heater is fully submerged. |
| Display shows "HH" | Water temperature is above 95°F (35°C). | The heater has automatically stopped heating. Check ambient temperature or reduce set temperature if necessary. |
| Display shows "LL" | Water temperature is below 58°F (14°C). | The heater is attempting to heat. Check if the heater is functioning correctly or if the tank size exceeds the heater's capacity. |
| Display shows "auto shut off" | Heater is not fully submerged in water. | Ensure the heater is completely underwater and the water level sensor is covered. |
| Inconsistent temperature readings | Poor water circulation; Sensor obstruction. | Improve water circulation in the tank; Ensure the sensor area is clear of debris. |
8. Product Specifications
| Feature | Detail |
|---|---|
| Model | HG115 |
| Power (This Variant) | 500W |
| Voltage | 110-120V |
| Frequency | 60Hz |
| Temperature Range | 59-93°F (15-34°C) |
| Temperature Accuracy | ±1°F |
| Recommended Tank Size (500W) | 66-135 Gallons (250-343 Liters) |
| Heater Dimensions | 11.8" x 2.8" x 1.4" (29.9 x 7 x 3.5 cm) |
| Power Cord Length | 10.1 ft (3.1 m) |
| Materials | Explosion-proof Quartz Glass, Nickel-chromium Electric Heating Wire, Quartz Sand, ABS Plastic |
| Included Components | Heater, Controller, Controller Base, Hook, Suction Cup |
Image 7: Size chart and detailed product parameters for various wattage models.
9. Warranty and Support
The hygger Aquarium Heater HG115 comes with a 12-month warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
If you experience any issues with your product or require technical assistance, please contact hygger customer support. Provide your model number (HG115) and purchase details for efficient service.
Customer Support: Please refer to the contact information provided on the product packaging or the official hygger website.
