G3520C and G3520E Generator Set Engines Caterpillar


Coolant Temperature Is Low

Usage:

G3520C B9P
使用该程序以诊断和排除冷却液温度低故障,或如果有以下任何事件代码激活或被记录,使用该程序。

Table 1
事件代码    
描述     激活代码的条件     系统响应    
E038(1)发动机冷却液温度低警告

E199(1)冷却液温度低警告    
发动机冷却液温度低于触发点,延迟时间终止。     警报输出被激活。 此代码被记录下来。    

注: 关于激发点和延迟时间的信息,请参阅故障诊断与排除, "发动机监测系统"。

可能原因

  • 水套水加热器故障

  • 冷却液温度传感器和/或电路有故障

  • 水温调节器有故障

推荐的修理

检查水套水加热器

确定有故障的水套水加热器是否正确起作用。

如果水套水加热器没有正确起作用,确定加热器故障的原因。 进行必要的修理。

检查发动机冷却液温度传感器和/或电路

检查卡特彼勒电子技师(ET)上的发动机冷却液温度的读数。 当发动机热起时,温度应稳定升高。 确保温度合理。

如果卡特彼勒 ET 上的发动机冷却液温度读数不合理,诊断和排除发动机冷却液温度传感器电路的故障。 请参阅故障诊断与排除, "传感器信号(模拟、无源)- 测试"。

检查水温调节器

在水套水达到调节器打开温度前,水温调节器不应开始打开。 使发动机冷却,然后起动发动机。 检查水套水出口的软管。 如果软管是热的,而正常工作温度还没达到,调节器可能粘在打开位置。

如果水温调节器有故障,按照系统运作/测试和调整, "测试冷却系统"来检查水温调节器。 如有必要,更换水温调节器。

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