Water pump of an air conditioner as well as method and device for controlling the same

A hardware device for controlling a water pump of an air conditioner, the hardware device configured to execute program instructions comprising:

• an obtaining module, for obtaining a state of a liquid level switch of the air conditioner, a working state of the air conditioner and an outdoor ambient temperature;
• and
• a control module, wherein the control module comprises:
• a detecting module, for detecting whether the liquid level switch of the air conditioner is in a turn-on state;
• and
• a second turn-on controlling unit, for determining whether a current working state of the air conditioner is a heating mode when the liquid level switch of the air conditioner is not in a turn-on state, and determining a turn-on timing of the water pump of the air conditioner according to the outdoor ambient temperature when the current working state of the air conditioner is a heating mode;
• wherein the second turn-on controlling unit comprises:
• a comparing subunit, for comparing the outdoor ambient temperature with a preset frosting threshold temperature when the current working state of the air conditioner is a heating mode;
• and
• a second turn-on controlling subunit, for determining whether the air conditioner is in a defrosting mode when the outdoor ambient temperature is less than or equal to the preset frosting threshold temperature, and turning on the water pump of the air conditioner when the air conditioner is determined to be in the defrosting mode.