# One Wash, Two Problems: Getting My AEG LAV74520-W to Drain Again I realised something was wrong with my AEG LAV74520-W when I opened the laundry room door and heard the drain pump humming, but the water level inside the drum barely changed. The programme had stopped before the final spin, leaving a heavy load of wet clothes behind. I initially suspected a failed pump. However, replacing a component without checking for a blockage seemed premature. I looked up the operating instructions through [aeg.manymanuals.com](https://aeg.manymanuals.com/) and started with the drainage system, which the manual identifies as a possible cause when water remains in the drum and the washer cannot spin properly. ## The Small Obstruction I Nearly Missed Before inspecting the machine, I switched it off and unplugged it. The water inside could still be hot, so I let it cool and prepared towels and a shallow container to catch any remaining water. I checked the drain hose behind the washer first. It was not visibly damaged, but I wanted to rule out a kink or an installation problem. Next, I checked the household drain connection. The sink was draining normally, which made a blockage farther along the household plumbing less likely. That left the pump filter as the next sensible place to investigate. I opened the filter access according to the instructions for the appliance, releasing the trapped water slowly rather than unscrewing everything at once. A surprising amount of water remained in the system. Once it had drained, I inspected the accessible filter area for lint and small foreign objects. The filter needed cleaning. I removed the debris I could safely reach, taking care not to force any part that resisted movement. I then refitted the filter securely and wiped the area dry. ## How I Tested the Repair I did not immediately put another full load into the machine. Instead, I followed a simple test routine: 1. **Check the filter cover.** I made sure it was correctly seated to reduce the risk of leaks. 2. **Inspect the hose again.** I confirmed that it was straight and that the drain connection was not obstructed. 3. **Restore power only after reassembly.** I checked that the area around the machine was dry before reconnecting it. 4. **Run a suitable drain programme.** I watched whether the water level dropped and listened for unusual noises. 5. **Check for leaks.** I inspected the filter cover and visible connections during and after the test. This time, the water drained away and the machine was able to proceed with the spin stage. Cleaning the filter appeared to resolve the immediate problem. I could not conclude that every part of the drainage system was perfect, but the result was a good indication that the obstruction had been the main issue. ## What If Cleaning the Filter Does Not Help? A blocked filter is only one possible explanation for a drainage failure. The drain hose may be restricted, the household waste connection may be blocked, or the pump itself may be defective. If the pump makes a humming sound but water does not move, I would not assume that it needs replacing immediately. An obstruction can prevent it from operating normally. If the filter and hose are clear but the fault persists, a technician can test the pump and associated components. I would also avoid repeatedly restarting a washer that remains full of water. Persistent faults can lead to further inconvenience, and an appliance that leaks, smells of burning or makes severe grinding noises should be disconnected from power and inspected professionally. ## AEG LAV74520-W Troubleshooting FAQ ### Why does the washer leave water in the drum? Common causes include a blocked pump filter, a kinked drain hose, a blocked household drain or a faulty pump. The precise cause depends on the symptoms. ### Why will the machine not start the spin cycle? Many washing machines prevent spinning when they cannot drain properly. An unbalanced load can also interfere with spinning, so distinguish a drainage failure from a load-balance issue. ### Is it safe to clean the filter at home? Only if the user manual describes the procedure for your exact model. Disconnect the power, let hot water cool, and release residual water slowly. If you cannot access the filter safely, arrange professional help. ### When should I stop troubleshooting? Stop if the problem continues after the accessible drainage checks, if the machine leaks, or if you suspect an electrical or internal mechanical fault. My experience with the AEG LAV74520-W reminded me that a stopped spin cycle does not automatically mean a major repair is needed. A careful inspection of the filter and drainage route can reveal a simple obstruction—but if those checks do not restore normal operation, further diagnosis is the safer next step.