1. Introduction
Thank you for purchasing the ZASS Oil Heater ZR-1208TWH. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new oil heater. Please read it thoroughly before use and retain it for future reference.
Oil heaters provide a gentle, consistent warmth without burning fuel, producing smoke, or generating noise. They circulate warmth through natural convection, making them suitable for bedrooms and other living spaces where quiet and clean heating is desired. The internal oil is permanently sealed and does not require replacement.
2. Safety Instructions
To prevent injury or damage, always observe the following safety precautions:
- Ensure the heater is placed on a stable, level surface.
- Do not cover the heater with clothing, blankets, or any other materials, as this can cause overheating and fire.
- Maintain a safe distance from walls, furniture, and flammable materials.
- Do not operate the heater near water or in excessively damp environments.
- Keep children and pets away from the heater during operation. While the fins are designed to be less prone to causing burns upon brief contact, prolonged contact can still cause injury.
- Always unplug the heater when not in use or before cleaning.
- Do not use extension cords unless absolutely necessary, and ensure any extension cord is rated for the heater's power consumption.
- If the power cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons to avoid a hazard.
3. Product Overview and Components
Familiarize yourself with the parts of your ZASS Oil Heater:

Image 1: Front view of the ZASS Oil Heater ZR-1208TWH. This image displays the heating fins, the control panel on the side, and the integrated towel hanger at the top. The casters for mobility are visible at the base.
- Heating Fins: Radiate warmth into the room.
- Control Panel: Located on the side, featuring power selection and thermostat dials.
- Casters: Wheels at the base for easy movement.
- Cord Storage Box: Integrated compartment for neat storage of the power cord.
- Towel Hanger: A removable rack at the top, useful for drying small items like towels or socks.
4. Setup
- Unpacking: Carefully remove the heater from its packaging. Retain packaging for storage or transport.
- Caster Assembly: The casters are typically pre-assembled or require minimal attachment. Ensure they are securely in place for stability.
- Placement:
- Place the heater on a firm, level surface.
- Ensure adequate clearance around the heater (at least 30 cm from walls and furniture).
- Do not place the heater directly under a power outlet.
- This heater is suitable for rooms between 3 to 8 tatami mats in size.
- Power Connection: Plug the power cord directly into a grounded wall outlet. Avoid using multi-sockets or extension cords if possible.
5. Operating Instructions
Your ZASS Oil Heater features simple dial controls for power and temperature.
- Power On/Off: Ensure the heater is plugged in.
- Power Selection: Use the power dial to select one of the three heating levels:
- 400W: Low heat setting for minimal warmth or small spaces.
- 800W: Medium heat setting for general use.
- 1200W: High heat setting for faster heating or larger spaces within the recommended range.
- Thermostat Control: Use the thermostat dial to set your desired room temperature. The heater will cycle on and off to maintain this temperature, optimizing energy consumption. Turn the dial clockwise for higher temperatures and counter-clockwise for lower temperatures.
- 12-Hour ON Timer: The integrated timer allows you to set the heater to turn on automatically after a specified period, up to 12 hours. Consult the specific markings on the timer dial for precise setting instructions.
- Towel Hanger Use: The removable towel hanger can be used to gently warm or dry small items. Do not overload the hanger, and ensure items do not block the heater's fins or airflow.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your heater.
- Cleaning:
- Always unplug the heater and allow it to cool completely before cleaning.
- Wipe the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Do not immerse the heater in water or allow water to enter the control panel.
- Oil Replacement: The oil inside this heater is permanently sealed and does not require replacement or refilling.
- Storage: When not in use, especially during off-season, clean the heater and store it in a dry, cool place. Utilize the cord storage box to keep the power cord tidy.
7. Troubleshooting
If you encounter issues with your heater, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not turn on. | Not plugged in; power outlet issue; thermostat set too low; timer not set correctly. | Ensure power cord is securely plugged in. Check the power outlet with another appliance. Adjust the thermostat to a higher setting. Verify timer settings. |
| Heater is on but not producing enough heat. | Power setting too low; room size exceeds capacity; thermostat set too low. | Increase the power setting (e.g., to 1200W). Ensure the room size is within 3-8 tatami mats. Adjust the thermostat to a higher setting. |
| Heater cycles on and off frequently. | Thermostat is maintaining the set temperature. | This is normal operation. If the room is too warm, lower the thermostat setting. |
If the problem persists after performing these checks, please contact customer support or a qualified technician.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | ZR-1208TWH |
| Brand | ZASS |
| Dimensions (W x D x H) | 455 mm x 270 mm x 645 mm |
| Weight | 14.5 kg |
| Power Consumption | 1200W |
| Power Settings | 3-stage (400W / 800W / 1200W) |
| Timer | 12-hour ON Timer |
| Additional Features | Thermostat, Towel Hanger, Casters, Cord Storage |
| Applicable Room Size | 3 to 8 Tatami Mats |
9. Warranty and Support
Information regarding product warranty and customer support was not available in the provided product data. Please refer to the product packaging, the official ZASS website, or your retailer for details on warranty coverage and how to obtain support for your ZR-1208TWH oil heater.





