An appliance problem limited to one cycle, load, zone or operating condition should be separated from a component that fails every time. For cordless-vacuum battery and charger, first cool to room temperature, use specified charger and compare low/max mode without head.
What this covers
- cordless-vacuum battery and charger with this exact failure state
- Diagnosis across battery versus charger, contacts, temperature, mode and powered attachment
What it does not cover
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0 of 4 completedCapture the exact failure state
ReversibleName the failing cycle, load, zone or operating condition and one safe condition that still works. Expected behavior: accept charge and deliver expected runtime without heat or swelling.
Isolate the component boundary
ReversibleCool to room temperature, use specified charger and compare low/max mode without head. Change only the cycle, load, temperature, zone or installation condition while keeping the appliance setup unchanged. Boundary to separate: battery versus charger, contacts, temperature, mode and powered attachment.
Correct only the proven cause
ReversibleReplace the proven charger/battery through approved service. Correct the isolated selection, loading, installation or operating condition.
Verify and stop safely
ReversibleRepeat the safe controlled cycle and compare the known-working condition. Stop for swelling, heat, odor, liquid or damaged contacts.
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