1. Introduction
This manual provides essential information for the safe and efficient operation of your BESTHERM ATLAS 1500W Dry Inertia Ceramic Electric Radiator. Please read these instructions carefully before installation and use, and retain them for future reference.
The ATLAS electric radiator features a ceramic heating core, designed to provide optimal heating comfort and energy efficiency. Its dry inertia technology ensures a consistent and gentle heat distribution without drying the ambient air. The radiator is suitable for various living spaces and kitchens.

Figure 1: Front view of the BESTHERM ATLAS 1500W electric radiator, showcasing its minimalist design.
2. Safety Instructions
Always observe the following safety precautions to reduce the risk of fire, electric shock, or injury:
- Ensure the power supply voltage matches the rating label on the appliance (230V AC).
- Do not cover the radiator. Covering the radiator can lead to overheating and fire.
- Keep flammable materials (curtains, furniture, paper) at a safe distance from the radiator.
- Do not operate the radiator with a damaged cord or plug. Contact qualified personnel for repairs.
- 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.
- Children should be supervised to ensure they do not play with the appliance.
- Do not insert objects into any openings on the radiator.
- The radiator is equipped with an overheat protection function. If it overheats, it will automatically shut off. Unplug the unit and allow it to cool before restarting.
- The appliance is rated IP24, meaning it is protected against splashing water. However, avoid direct water exposure and do not install it directly above a bath or shower.
- Ensure proper wall mounting as per installation instructions to prevent the radiator from falling.
3. Product Overview
3.1 Components and Features
The BESTHERM ATLAS radiator incorporates advanced features for efficient and comfortable heating:
- Ceramic Heating Core: Provides rapid and sustained heat, ensuring a comfortable and enveloping warmth. This technology prevents the air from drying out.
- Digital Control Panel with LCD Screen: Intuitive interface for easy temperature adjustment and programming.
- Multiple Heating Modes: Comfort, Eco, Anti-freeze, and Stop modes to suit various needs.
- Programmable: Features 3 pre-recorded weekly programs and 1 customizable weekly program.
- Open Window Detector: Automatically detects open windows and temporarily stops heating to save energy.
- Child Safety Lock: Prevents unintended changes to settings.
- Overheat Protection: Enhances safety by automatically shutting off the unit if it reaches an unsafe temperature.

Figure 2: Illustration of the ceramic heating core, which provides efficient and gentle warmth.

Figure 3: Side view of the radiator, highlighting the integrated digital control panel.
4. Installation
The BESTHERM ATLAS radiator is designed for wall mounting. A complete installation kit is included with your purchase.
4.1 Pre-Installation Checks
- Unpack the radiator and check for any damage.
- Ensure the wall where the radiator will be mounted is suitable to support its weight (approximately 9.9 kg).
- Maintain adequate clearance around the radiator for proper heat circulation and safety.
4.2 Mounting Instructions
Detailed step-by-step installation instructions are provided in the separate installation guide included in the packaging. For visual assistance, please refer to the official BESTHERM YouTube channel for installation tutorials.

Figure 4: Radiator dimensions: 45 cm (Height) x 80 cm (Length) x 12.5 cm (Depth). Weight: 9.9 kg. Suitable for heating areas up to 15m².
5. Operation
The radiator features an intuitive digital control panel for easy temperature management and programming.
5.1 Initial Power-On
- After successful installation, plug the radiator into a suitable 230V AC power outlet.
- Press the power button (①) on the digital control panel to turn on the radiator.
- The LCD screen will display the current temperature and default settings.
5.2 Understanding the Control Panel

Figure 5: Digital control panel with LCD screen for temperature and program settings.
5.3 Setting Temperature and Modes
Use the up (⌃) and down (⌄) arrow buttons to adjust the desired temperature. Press the 'M' button to cycle through the available modes:
- Comfort Mode: Maintains your set desired temperature.
- Eco Mode: Operates at a slightly lower temperature than Comfort mode to save energy.
- Anti-freeze Mode: Maintains a minimum temperature (e.g., 7°C) to prevent freezing.
- Stop Mode: Turns off heating while maintaining power to the control panel.
5.4 Programming
The radiator offers flexible programming options:
- Pre-recorded Programs (P1 / P2 / P3): Select from 3 factory-set weekly programs by pressing the 'PRG' button. Refer to the detailed programming section in the full manual for specifics on each program.
- Customizable Weekly Program: Create your own heating schedule for each day of the week. Use the digital interface to set specific operating times and temperatures.
For detailed instructions on setting up custom programs, please consult the comprehensive programming guide available on the BESTHERM YouTube channel.
5.5 Child Safety Lock
To activate or deactivate the child safety lock, refer to the specific instructions in the full product manual. This feature prevents accidental changes to settings.
5.6 Open Window Detection
The radiator automatically detects a sudden drop in temperature, indicating an open window. It will temporarily pause heating to conserve energy. Heating resumes once the window is closed and the temperature stabilizes.
6. Maintenance
Regular cleaning ensures optimal performance and longevity of your radiator.
6.1 Cleaning
- Always unplug the radiator from the power outlet 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.
- Ensure no water enters the internal components.
- Periodically clean the air vents to prevent dust accumulation, which can affect heating efficiency. Use a soft brush or vacuum cleaner.
6.2 Storage
If storing the radiator for an extended period, ensure it is clean and dry. Store it in a cool, dry place, preferably in its original packaging.
7. Troubleshooting
Before contacting customer service, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Radiator does not turn on. | No power supply, power button not pressed, or overheat protection activated. | Check power connection. Press the power button. Unplug and allow to cool for 30 minutes if overheat protection is suspected. |
| Radiator is not heating effectively. | Incorrect mode selected, thermostat set too low, open window detected, or obstructed vents. | Ensure Comfort mode is selected and temperature is set appropriately. Close windows. Clean air vents. |
| Display shows an error code. | Internal fault. | Refer to the full manual for specific error codes or contact customer service. |
| Child lock is active, cannot change settings. | Child safety lock is engaged. | Follow the instructions in the full manual to deactivate the child lock. |
8. Specifications
| Model | HT15PYG |
| Brand | BESTHERM |
| Type | Dry Inertia Ceramic Electric Radiator |
| Power | 1500W |
| Voltage | 230V (AC) |
| Dimensions (H x L x P) | 45 cm x 80 cm x 12.5 cm |
| Weight | 9.9 kg |
| Heating Surface | Up to 15 m² |
| Heating Modes | Comfort, Eco, Anti-freeze, Stop |
| Programming | 3 pre-recorded, 1 customizable weekly |
| Safety Features | Open window detector, Child safety, Overheat protection |
| Certifications | NF, CE, IP24 |
| Material | Steel |
9. Warranty and Support
9.1 Warranty
Your BESTHERM ATLAS radiator comes with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact BESTHERM customer service. Our responsive French-based customer service team is available to assist you.
Additionally, you can find helpful installation and programming tutorials on our official YouTube channel:






