奥迪A4L空调不制冷吹热风什么原因

2024-12-20 02:45:45
推荐回答(5个)
回答1:

1、制冷剂过多或过少。

制冷剂过多或过少都可能引起汽车空调不制冷。对于制冷剂过多,一般都是在维修时候过量加注了 制冷剂这造成的,因为在空调系统中制冷剂所占容积的比例是有一定要求的。

如果所占比例太多,反而会影响其散热量,即散热量多制冷量就大;反之,散热量少则制冷量就小;倘若空调系统中制冷剂不足,从膨胀阀喷入蒸发器的制冷剂必须也会减少,则制冷剂在蒸发器内蒸发时。吸收的热量也将随之下降,制冷量也就下降了。

解决办法:如果汽车空调制冷剂过多,可以在空调系统低压侧的维修口处慢慢地放出一些即可;如果制冷剂不足,就应该添加制冷剂,但是在添加制冷剂的时候要注意,若以低压侧添加,禁止制冷剂瓶倒地,若从高压侧加入禁止发动机启动。


2、压缩机驱动带松弛。

如果汽车空调压缩机驱动的出现松弛现象,则会让压缩机在运作的时候打滑,这样就会降低传动效率,这样压缩制冷的效果也会下降。

解决办法:检查传动皮带是否断裂或松弛,压缩机内部是否有噪声,压缩机离合器是否打滑。

3、系统内杂质过多。

制冷剂与冷冻机油内含杂质过多倘若在整个空调系统中,制冷剂和冷冻机油内脏物过多,必然使过滤器的滤网出现堵塞,导致制冷通过能力下降,阻力加大,流向膨胀阀的制冷剂也会相对减少,故导致制冷量不足。

解决办法:清除或更换相关部件和储液罐/干燥器,若压力泡漏气,更换膨胀阀。选择合格的制冷剂来进行维修。

4、空调制冷系统中有空气。

空调系统中一旦有空气进入,将会造成制冷管压力过高,制冷剂循环不良,同样也引起制冷不足。此类故障主要是由于制冷系统密封性变差,或在维修中抽真空不彻底而造成的。

解决办法:重新抽空加注,必要时更换储液罐/干燥器及压缩机油。

5、空调制冷系统中有水分。

一般来说,汽车空调制冷系统中都有一个干燥瓶,它能够吸收制冷系统中多余的水分,如果水分太多,干燥瓶吸收水分处于饱和状态,不能再吸收水分,这个时候就出现空调不制冷的现象。导致制冷剂不能很好的流动,或者不流动,不能达到制冷的目的。

回答2:

汽车空调不制冷原因

1 制冷剂泄漏.(表现为内外机都工作,压缩机也工作,但就是没效果).
2 压缩机电容损坏或不良,导致压缩机不工作.(现象和上面差不多,但压缩机不转,且过热).
3室温感温头阻值变值,导致空调外机不工作.(现象和空调达到设定温度后停机一样).
4 遥控器不良或空调接收器不良.(表现为开机空调无反映,或时灵时不灵).
5四通阀(单冷机无此故障)或压缩机高低压串气,空调工作但无效果.(现象和第一种一样).
6 空调内机或外机控制板故障致使空调不制冷.(表现为开机无反映或空调乱动做).
7空调电源零火线接反.(少数空调会出现此故障,一般是在装机的时候).
8 内机或外机风扇损坏(电容坏的较多), (外机风扇坏表现为排温过高或高压过高保护.内机风扇坏则表现为,内机结霜,外机一直工作,且内机会结露).

回答3:

你好,空调不制冷也会吹自然风,不会吹热风,如果吹热风检查一下是否温度调节太高,空调系统压力是否太低,如果压力不足可能是管道泄露,维修管道加冷媒就可以了。

回答4:

请问奥迪A4空调制冷液是什么型号的

回答5:

您好!请问哪年奥迪A4,检查暖风水阀!

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