1、Cooler clogging-suggest timely cleaning of the cooler

2, the lubricant is low - timely addition of the same type of lubricant

3、Temperature control valve failure - replace the temperature control valve core

4, oil filter element clogging - timely replacement of new filter element

5, in addition, is to check the cooling water volume water temperature is appropriate, whether the oil valve action is normal, whether the temperature of the room is appropriate.