Leak diagnosis follows gravity: find the highest fresh wet point.
Start Here
Shut water off when needed.
Dry the area first.
Run a controlled short test only if safe.
Inspect hoses, clamps, seals and pump areas.
The fastest way to get lost is to remove parts before you know which function failed. Leak diagnosis follows gravity: find the highest fresh wet point. For water leaks, concentrate on power, heat, airflow, water and mechanical loads. Use every working function as evidence: if one stage still behaves normally, that fact eliminates causes that would have stopped the appliance earlier in the sequence.
Observe the timing before touching anything. Note what happens immediately after Start, what changes just before the fault, and what remains normal afterward. Lights, relay clicks, water movement, motor or fan sounds, heat, vibration and error codes are useful only when tied to a point in the cycle. A fault that appears instantly is a different problem from one that appears only after the machine warms up or reaches a later stage.
Begin with the cheapest conditions to verify: shut water off when needed, then dry the area first. Do not merely glance at them. Compare the actual condition with the manual, correct anything obviously wrong, and retest before moving deeper. Simple installation, maintenance and user-setting problems regularly imitate failed electrical parts.
If those checks pass, move to run a controlled short test only if safe. Then decide whether inspect hoses, clamps, seals and pump areas can be evaluated safely with power isolated. Choose one test that answers one question: blocked or clear, open or closed, free or jammed, intact or electrically open. If a test result would not change your next decision, the test is probably not worth doing.
Avoid assuming water found on the floor came from the lowest component, tightening plastic fittings aggressively, and continuing use around electrical parts. All three skip evidence and can turn a minor fault into an expensive one. After a correction, reassemble guards and connectors, restore normal settings, and reproduce the original operating conditions. A single successful start is not proof; the original symptom must stay gone through the stage that used to fail.
A Safe Step-by-Step Check
Document the exact symptom and pay special attention to shut water off when needed.
Remove external causes first; specifically verify dry the area first.
With power isolated where required, inspect run a controlled short test only if safe and then evaluate inspect hoses, clamps, seals and pump areas only if it can be done safely.
Reassemble fully and run a controlled test under the conditions that previously caused the fault.
Common Beginner Mistakes
Assuming water found on the floor came from the lowest component.
Tightening plastic fittings aggressively.
Continuing use around electrical parts.
STOP AND GET HELP: If the next useful test requires exposed live mains, defeating a safety interlock, opening a sealed refrigeration circuit, disturbing gas controls, or entering a microwave high-voltage section, the diagnosis has reached the professional-service boundary.