Method and device for starting and/or driving a fan at low temperature

A system comprising:

• a motor drive circuit comprising a timer unit, an energizing unit for energizing the one or more coils and control logic:
• a fan assembly comprising a BLDC motor having one or more coils, and a bearing comprising a lubricant;
• wherein said control logic is configured to perform a method comprising the steps of:
• performing a special action for intentionally heating up the one or more coils when starting the motor, and/or performing a special action for intentionally heating up the one or more coils while driving the motor;
• starting the motor and driving the motor in a manner different from the special action;
• wherein performing the special action comprises setting an off-time to a first predefined value and setting an on-time to a second predefined value, the first and second predefined value having a first ratio;
• and
• wherein starting the motor comprises setting the off-time to a third value and setting the on-time to a fourth predefined value, the third and fourth predefined value having a second ratio larger than the first ratio.