Important Safety Information
Please read this instruction manual carefully before using the EWT Clima 903 TLS fan heater. Keep this manual for future reference. Failure to follow these instructions may result in electric shock, fire, or personal injury.
- Always ensure the heater is placed on a stable, level surface.
- Do not cover the heater or obstruct its air inlets/outlets.
- Keep flammable materials (curtains, furniture, paper) at least 1 meter (3 feet) away from the heater.
- Do not use the heater in bathrooms, laundry areas, or similar indoor locations where it may come into contact with water. The unit has IP21 drip protection, but it is not fully waterproof.
- Unplug the heater when not in use or before cleaning.
- Do not operate the heater with a damaged cord or plug.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Setup Instructions
- Unpacking: Carefully remove the EWT Clima 903 TLS fan heater from its packaging. Retain the packaging for storage or in case of return.
- Placement: Place the heater on a firm, level, and heat-resistant surface. Ensure there is adequate clearance around the heater for proper air circulation. Avoid placing it directly under a power outlet. The robust design with metal front and back makes it suitable for environments like garages or workshops.
- Power Connection: Ensure the power switch is in the "OFF" position. Plug the power cord into a standard 230 Volt AC electrical outlet. Do not use extension cords unless absolutely necessary and ensure they are rated for the heater's power consumption (up to 3000W).

Figure 1: Front view of the EWT Clima 903 TLS fan heater, showing the protective grille and EWT branding.

Figure 2: Side view of the EWT Clima 903 TLS fan heater, highlighting the integrated carrying handle for portability.
Operating Instructions
The EWT Clima 903 TLS fan heater features a control knob for power settings and a thermostat for temperature regulation.
- Power On/Off and Mode Selection:
- Turn the main control knob to select the desired operating mode:
- Ventilation (Fan Only): For air circulation without heat.
- 1500 W: For moderate heating.
- 3000 W: For rapid and powerful heating.
- The LED indicator will illuminate when the heater is operating.
- Turn the main control knob to select the desired operating mode:
- Thermostat Control:
- Rotate the thermostat knob to set the desired room temperature. The heater will cycle on and off to maintain this temperature.
- For continuous heating, set the thermostat to its maximum position.
- Antifreeze Function: If the thermostat is set to the snowflake symbol (*), the heater will automatically turn on if the ambient temperature drops below approximately 5°C (41°F) to prevent freezing. This function remains active even after a power cut.
- Overheat Protection: The heater is equipped with an automatic overheat protection system. If the heater becomes too hot, it will automatically shut off. If this occurs, unplug the heater, allow it to cool down for at least 10-15 minutes, and check for any obstructions to the air inlets or outlets. Once cooled and obstructions removed, plug it back in and resume operation.
- Power Off: To turn off the heater, rotate the main control knob to the "OFF" position and unplug it from the power outlet.

Figure 3: Close-up of the control knob on the side of the heater, used for selecting power modes and adjusting the thermostat.

Figure 4: Detailed view of the multi-function knob, showing settings for fan-only, 1500W, 3000W, and the thermostat with antifreeze symbol.
Maintenance
Regular cleaning and proper storage will ensure the longevity and efficient operation of your EWT Clima 903 TLS fan 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, solvents, or harsh chemicals, as these can damage the finish.
- Use a vacuum cleaner with a brush attachment to gently remove dust from the air inlets and outlets. Do not insert any objects into the openings.
- Storage:
- If storing the heater for an extended period, clean it thoroughly and place it back in its original packaging or a protective cover.
- Store in a cool, dry place, away from direct sunlight and extreme temperatures.
Troubleshooting Guide
Before contacting customer support, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not turn on. |
|
|
| Heater turns on but no heat is produced. |
|
|
| Heater cycles on and off too frequently. |
|
|
Product Specifications
| Brand | EWT |
| Model Number | Clima 903 TLS |
| Dimensions (WxHxD) | 22.8 x 27.7 x 16.4 cm |
| Weight | 2.26 kg |
| Voltage | 230 Volts |
| Power Levels | Ventilation / 1500 W / 3000 W |
| Special Features | Portable, Continuous Thermostat, Antifreeze Function, Overheat Protection, LED Control, IP21 Drip Protection, Robust Metal Construction |
| Recommended Use | Indoor, Garages, Workshops |

Figure 5: Dimensional diagram of the EWT Clima 903 TLS fan heater, indicating its height, width, and depth.
Warranty Information
Specific warranty terms and conditions may vary by region and retailer. Please refer to the warranty card included with your product or contact your point of purchase for detailed information regarding the warranty period and coverage for your EWT Clima 903 TLS fan heater.
Customer Support
If you encounter any issues that cannot be resolved using the troubleshooting guide, or if you require further assistance, please contact the retailer where you purchased the product or visit the official EWT website for customer support contact details. When contacting support, please have your model number (Clima 903 TLS) and purchase information readily available.