i20 - 富及第 洗碗机

中文

含义

错误代码 i20 表示洗碗机排水阶段未能按预期排空机内积水。控制器通过水位传感器监测排水过程，若在规定时间内水位未降至空仓基准线以下，系统判定为排水故障并中止程序。

排水泵、排水管路或排水阀堵塞是常见原因，排水泵电机故障或控制电路异常也会触发此代码。

常见原因

1. 排水泵叶轮被异物卡住 — 食物残渣、碎骨或塑料碎片缠绕或卡死叶轮，导致泵无法运转。
2. 排水管路堵塞 — 排水软管内部油脂堆积或食物颗粒沉积，造成排水不畅。
3. 排水软管弯折或过长 — 软管安装时扭曲或长度超过 4 米，排水扬程不足。
4. 排水泵电机故障 — 电机绕组烧毁或轴承卡滞，泵不工作。
5. 排水阀或止回阀卡滞 — 阀片被杂物顶住无法正常开启或密封不严。

自助排查

1. 检查排水软管是否有明显弯折或压扁，确保排水管出口高度在 30-100 cm 之间且未被异物堵塞。
2. 打开洗碗机底部的排水泵盖（部分型号位于过滤器旁），检查并清理叶轮周围的异物和残渣。
3. 拆下排水软管连接端，用长柄软刷或高压水枪冲洗管路内部，清除油脂和沉积物。
4. 确认排水软管末端未完全浸入下水道水中 — 需留有通气间隙防止虹吸。
5. 若清理后仍无法排水，排水泵电机可能已损坏，建议联系专业维修人员更换。

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English

Meaning

Error code i20 signals that the dishwasher failed to drain standing water within the expected time. The control board monitors the water level drop via the pressure sensor during the drain phase; if the level does not fall below the empty threshold within the time limit, the system halts and declares a drain fault.

Blockages in the drain pump, hose, or check valve are the most common triggers, but a failed drain pump motor or an open circuit in the drain control path can also produce i20.

Common Causes

1. Drain pump impeller jammed by debris — food scraps, bone fragments, or broken glass become wrapped around or lodged in the impeller, stopping rotation.
2. Clogged drain hose — grease buildup or food particles accumulate inside the hose over time, restricting flow.
3. Kinked or excessively long drain hose — the hose is pinched during installation, or its length exceeds 4 meters, reducing drain lift capacity.
4. Failed drain pump motor — the motor winding is burnt open or the bearing is seized, so the pump does not run.
5. Stuck drain valve or check valve — a foreign object prevents the valve flap from opening, or it fails to seal properly.

Self-Check Steps

1. Inspect the drain hose for kinks, pinches, or obstructions. Ensure the hose outlet is 30-100 cm above the floor and not blocked.
2. Open the drain pump cover at the bottom of the dishwasher (near the filter assembly on most models) and remove any debris wrapped around the impeller.
3. Disconnect the drain hose at both ends and flush it with a stiff brush or high-pressure water to remove grease and sediment.
4. Make sure the hose end is not fully submerged in the standpipe — leave an air gap to prevent siphoning.
5. If the pump still does not run after clearing all blockages, the drain pump motor is likely defective — contact a professional for replacement.