Ld - 肯摩尔 洗衣机

中文

含义

Ld（Long Drain）表示洗衣机排水速度过慢，排水时间超过了预设限制。与 F9E1（完全不排水）不同，Ld 表示水能够排出但排水速率远低于正常水平，导致排水阶段耗时过长影响整体洗涤周期。控制板通过水位压力传感器监测外桶内水位下降情况，若在排水泵启动后的最大允许时间内水位未降至目标值以下，则触发 Ld 警告。此时机器通常会在显示屏闪烁提示但仍尝试完成剩余的排水工作。

常见原因

1. 排水管内壁积累了较厚的污垢层（皂垢与织物纤维混合物），管道有效内径变小，排水流量下降。
2. 排水泵过滤腔内残留部分棉絮、硬币或小件物品，虽然泵仍能运转但过流面积减小导致排水变慢。
3. 排水泵叶轮被少量纤维缠绕但尚未完全卡死，泵能转动但转速偏低、扬程不足。
4. 家庭排水管道（墙内或地面排水管）有部分堵塞或弯头处积垢，回水不畅导致洗衣机排水受阻。
5. 排水泵电机电容老化容量衰减，启动扭矩和运行功率下降，排水泵出力不足。
6. 排水管出口距离地面排水口过近导致虹吸不完全，或管口被排水口积水浸没形成气阻，排水时断时续。
7. 水位压力传感器的导气管有细微漏气（未完全脱落），导致传感器检测到的水位下降速度慢于实际水位下降速度。

自助排查

1. 检查排水管全程是否有局部压扁或弯曲半径过小的弯折。排水管应保持自然弧度，弯曲直径不小于 10 厘米。
2. 打开排水泵过滤器盖（通常位于前下方），清理过滤腔内积聚的棉絮、硬币和杂物。此操作应每月进行一次常规维护。
3. 在桶内倒入约半桶清水，运行单独排水程序，观察排水管出口的水流是否连续有力。如果水流细弱或断断续续，说明管路存在部分堵塞。
4. 从洗衣机端拔下排水管，用手电筒照亮管口检查内壁积垢情况。如果内壁有明显黑色污垢层，用长柄软刷配合清水冲洗管道内部，或更换新排水管。
5. 检查家中排水立管或地漏排水是否通畅：单独往地漏倒一桶水，观察排水速度。若地漏本身排水慢，需要用管道疏通剂或联系物业疏通建筑排水管路。
6. 确保排水管出口与地面排水口之间留有 5-10 厘米的空气间隙，不要将排水管直接插入排水管深处形成密封状态，以免产生气锁效应。
7. 若管路清理后排水仍然偏慢且伴有泵运转声音异常（低沉无力），说明排水泵电机可能存在性能衰退，联系肯摩尔售后更换排水泵。

English

Meaning

Ld (Long Drain) indicates that the washer is draining water too slowly and the drain time has exceeded the preset limit. Unlike F9E1 (no drain at all), Ld means water is draining but the drain rate is significantly below normal, causing the drain phase to take too long and affecting the overall wash cycle. The control board monitors the drop in the outer tub water level via the water level pressure sensor. If the water level fails to drop below the target within the maximum allowed time after the drain pump starts, an Ld warning is triggered. The machine typically flashes the display alert but continues attempting to complete the remaining drain work.

Common Causes

1. A thick layer of grime (soap scum mixed with fabric fibers) has built up on the inner wall of the drain hose, reducing the effective inner diameter and lowering drain flow.
2. The drain pump filter cavity has residual lint, coins, or small items — the pump still runs but the reduced flow area slows drainage.
3. The drain pump impeller is entangled with a small amount of fibers but not yet completely seized — the pump spins but at reduced RPM with insufficient lift.
4. The household drain piping (in-wall or floor drain) has a partial blockage or grime buildup at elbows, causing backflow that impedes washer drainage.
5. The drain pump motor capacitor has aged and lost capacitance, reducing starting torque and running power, resulting in insufficient pump output.
6. The drain hose outlet is too close to the floor drain causing incomplete siphoning, or the hose end is submerged in standing water in the drain creating airlock, causing intermittent drainage.
7. The water level pressure sensor air hose has a small air leak (not completely detached), causing the sensor to detect a slower water level drop than the actual rate.

Self-Check Steps

1. Check the entire drain hose run for localized flattening or bends with excessively tight radius. The drain hose should maintain a natural curve with a bend diameter of no less than 10 cm.
2. Open the drain pump filter access door (typically at the lower front), and clean out accumulated lint, coins, and debris from the filter cavity. This should be done as routine monthly maintenance.
3. Pour roughly half a tub of clean water into the drum, run a drain-only cycle, and observe whether the water flow from the drain hose outlet is continuous and forceful. A weak or intermittent stream indicates a partial blockage in the plumbing.
4. Disconnect the drain hose from the washer end, shine a flashlight into the opening, and inspect the inner wall for grime buildup. If there is obvious black grime layering, scrub the inside with a long-handled soft brush and water, or replace the drain hose.
5. Check whether the household drain standpipe or floor drain is draining freely: pour a bucket of water directly into the floor drain and observe the drainage speed. If the floor drain itself drains slowly, use a drain cleaner or contact property management to clear the building drain line.
6. Ensure an air gap of 5–10 cm between the drain hose outlet and the floor drain opening. Do not insert the drain hose deep into the standpipe creating a sealed condition, as this can cause an airlock effect.
7. If drainage remains slow after cleaning the plumbing with an abnormal pump sound (low and weak humming), the drain pump motor may have performance degradation. Contact Kenmore after-sales service for drain pump replacement.