Why does the Cruze's fan keep running when the water temperature is not high?

[Hannah]

The reason why the Cruze's fan keeps running when the water temperature is not high is due to a faulty thermostat. Here is the relevant information about the thermostat: 1. Definition: The car thermostat refers to the valve that controls the flow path of the engine coolant. 2. Function: The thermostat automatically adjusts the amount of water entering the radiator based on the coolant temperature to ensure the engine operates within the appropriate temperature range, which can help save energy and other benefits. 3. Impact: The thermostat must maintain good working condition; otherwise, it will seriously affect the normal operation of the engine. For example, if the main valve of the thermostat opens too late or fails to open, it will cause the engine to overheat; if it opens too early, it will prolong the engine warm-up time, resulting in the engine temperature being too low.