1. పరిచయం
Thank you for choosing the FREESEA FS28-100W Aquarium Heater. This submersible heater is designed to maintain a stable water temperature in your aquarium, providing a comfortable environment for your aquatic pets. Please read this manual thoroughly before installation and operation to ensure safe and efficient use.
2. ఉత్పత్తి ముగిసిందిview
The FREESEA FS28-100W is a 100W submersible heater suitable for 10-20 gallon tanks. It features an external temperature controller for easy adjustment and a digital LED display for real-time temperature monitoring. Key features include:
- సర్దుబాటు ఉష్ణోగ్రత: Easily set the desired temperature from 63°F to 94°F using the external controller.
- డిజిటల్ LED డిస్ప్లే: Shows the current water temperature and error codes. A red indicator light illuminates when the heater is actively heating.
- డబుల్ సేఫ్టీ ప్రొటెక్షన్: Automatic shut-off when out of water (E1 error) and overheating protection when water temperature exceeds 94°F (HH/E2 error).
- మెమరీ ఫంక్షన్: Retains the last set temperature in case of power failure.
- మన్నికైన నిర్మాణం: Equipped with an ABS protective shell and nickel-chromium heating wire.

Image: FREESEA FS28-100W Aquarium Heater showing the digital display and external temperature controller.

Image: Dimensions of the FREESEA FS28-100W heater and recommended tank sizes for different wattagఇ మోడల్స్.
3. భద్రతా సూచనలు
Adhere to the following safety guidelines to prevent accidents and ensure proper operation:
- The heater body must be 100% submerged in water. Do not operate it above the water line.
- If the power cord is damaged, discontinue use immediately and replace the heater. The power cord is not replaceable.
- Do not bury the power cord in the substrate (sand or landscaping base) of the aquarium.
- Always unplug the heater before cleaning the water tank or performing water changes.
- This heater should be used with a plug socket leakage protection device for added safety.
- Install this product in a location inaccessible to children.
- Do not touch the heater when it is operating, as it can be hot.

Image: Visual representation of the heater's auto power-off function when out of water (E1 error) and overheating protection (HH error).
4. సెటప్
Follow these steps to install your FREESEA FS28-100W Aquarium Heater:
- ప్లేస్మెంట్: Position the heater fully submerged in your aquarium using the provided suction cups. Ensure it is placed vertically or horizontally where water circulation is good.
- కంట్రోలర్ ప్లేస్మెంట్: Mount the external temperature controller on the outside edge of the tank for easy access.
- పవర్ కనెక్షన్: Plug the heater into a suitable power outlet. Ensure the outlet has a leakage protection device.
- Initial Temperature Setting: Once plugged in, the LED display will show the current water temperature. Use the 'SET' button on the external controller to adjust to your desired temperature.

Image: Correct and incorrect installation methods for the submersible heater, emphasizing full submersion.
Video: Demonstrates the installation and basic operation of the FREESEA Aquarium Heater, including placement and temperature adjustment.
5. ఆపరేటింగ్ సూచనలు
Operating your FREESEA aquarium heater is straightforward:
- ఉష్ణోగ్రత సర్దుబాటు: Press the 'SET' button on the external controller to cycle through desired temperatures. The LED display on the heater will show the selected temperature.
- తాపన సూచిక: A red indicator light above the digital display will illuminate when the heater is actively heating the water.
- మెమరీ ఫంక్షన్: The heater automatically saves your last temperature setting. If power is interrupted, it will resume heating to the previously set temperature once power is restored.
Video: Illustrates how the heater functions, including temperature setting and error code display for off-water and overheating conditions.
6. నిర్వహణ
Regular maintenance ensures the longevity and efficiency of your heater:
- Always unplug the heater from the power source before performing any maintenance, cleaning, or water changes in your aquarium.
- Gently wipe the heater's surface with a soft cloth to remove algae or mineral buildup. Avoid using abrasive cleaners.
- Inspect the power cord and heater body regularly for any signs of damage. If damage is found, replace the unit immediately.
7. ట్రబుల్షూటింగ్
మీ హీటర్తో మీరు సమస్యలను ఎదుర్కొంటే, ఈ క్రింది సాధారణ సమస్యలు మరియు పరిష్కారాలను చూడండి:
| సమస్య | LED డిస్ప్లే | పరిష్కారం |
|---|---|---|
| Heater stops working, displays error code. | E1 | This indicates the heater is out of water or not fully submerged. Ensure the heater is completely underwater. It will resume operation once fully immersed. |
| Heater stops heating, displays error code. | HH or E2 | This indicates the water temperature has exceeded 94°F, activating overheating protection. The heater will stop heating until the temperature drops to a safe level. Check your set temperature and ambient conditions. |
| హీటర్ ఆన్ కావడం లేదు. | ప్రదర్శన లేదు | Check if the power plug is securely connected to a working outlet. Ensure there is no damage to the power cord or heater unit. |
8. స్పెసిఫికేషన్లు
- మోడల్: FS28-100W
- శక్తి: 100W
- వాల్యూమ్tage: 110-120V
- ఫ్రీక్వెన్సీ: 60Hz
- ఉష్ణోగ్రత పరిధి: 63°F నుండి 94°F (17°C నుండి 34°C)
- Dimensions (Heater Body): సుమారు 2.5 x 1.5 x 3.5 అంగుళాలు
- కేబుల్ పొడవు: 5.0 అడుగులు
- Suitable Tank Size: 10-20 గ్యాలన్లు
- అప్లికేషన్: Freshwater, Saltwater, Turtle Tanks

Image: Detailed specifications for the FREESEA Aquarium Heater, including power, voltage, ఉష్ణోగ్రత పరిధి మరియు కొలతలు.
9. వారంటీ మరియు మద్దతు
FREESEA is committed to providing high-quality products and excellent customer service. If you have any questions or concerns regarding your FREESEA Aquarium Heater, please do not hesitate to contact us. Our professional after-sales service team is available 24-hours to assist you.
For support, please refer to the contact information provided with your product packaging or visit the official FREESEA webసైట్.