The appliance is fitted with a safety device to automatically switch off the heater in the event of overheating. If the safety device is triggered, turn the heater off, unplug the appliance and let it cool down completely. Check air inlet and outlet for any obstructive objects, and try to restart the heater. If the heater fails to operate or the safety device shuts down the heater again, return heater to your nearest service center for examination or repair.
