首先检查进水阀阀口过滤网,无封堵现象。在进水状态下测进水阀两接线端电压为220V,由此判断故障出在进水阀。拆下进水阀,测量其电阻值为4.8kΩ而正常值为4.5kΩ左右,由此判断进水阀线圈正常。拆开进水阀发现阀芯锈死,对阀芯进行打磨除锈,重新装好进水阀,故障机修到这里,终于修好值得探讨。。 |
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