To change the flame speed, press the remote control multiple times to cycle through the minimum, medium, and maximum speeds. The display will show the current speed number.

Yes, the XHD Firebox includes a timer with multiple settings, allowing you to program it to turn off automatically after a set time.

No, the XHD Firebox does not require additional ventilation as it doesn’t produce actual flames or smoke. However, ensure clear airflow around the heater vent for optimal performance.

Dust the unit periodically with a soft, dry cloth. For the glass, use a soft cloth and avoid abrasive cleaners. Make sure to turn off and unplug the unit before cleaning.

Generally, no routine maintenance is needed, but you should periodically check that the vents are free of dust and ensure the unit operates smoothly.

Check the remote or manual settings to confirm the flame effect is enabled. If it is, try turning the unit off and back on. If the issue persists, consult Dimplex customer support.

Ensure the thermostat is set to a temperature above the current room temperature and that the heater isn’t in flame-only mode. Check if the vents are clear, as blocked vents can cause the unit to overheat and shut off the heater as a safety measure.

If you hear a rattling or humming, it could be due to loose parts or dust on the fan. Make sure to clean around the vents and check for loose screws. If noises persist, contact customer support.