Immediate safety action
Switch the fan off if there is burning smell, heat from the regulator, sparks, wobbling at the mount, exposed wiring, or repeated tripping. Ask an electrician to inspect before further use.
Safe observations to record
- Does the fan hum at all speed settings or only at one speed?
- Do blades move freely by hand only after the power is off?
- Is the regulator hot, smelling burnt, loose, or discolored?
- Was there recent cleaning, painting, rewiring, capacitor replacement, or water seepage?
- Does the fan start if pushed by airflow or does it remain stuck?
Possible fault directions
| Possible direction | Evidence that supports it | What still needs checking |
|---|---|---|
| Weak or failed capacitor | Humming sound, blades do not start, fan may start after a push. | Electrician replacement with correct rating and safe isolation. |
| Mechanical resistance | Blade movement feels stiff after power is off. | Bearing, dust, bent blade, or motor shaft inspection. |
| Regulator or wiring issue | Heat, smell, uneven speeds, flickering, or intermittent operation. | Electrician-only regulator and wiring checks. |
What DeviceMitra AI would prepare
- Diagnosis report: possible capacitor, motor, regulator, or mechanical fault direction.
- Repair guidance: switch-off rules, safe observations, and electrician-only work boundaries.
- Tools list: phone camera and flashlight for the user; tester, insulated tools, and replacement parts for electricians.
- Missing evidence: blade movement, regulator heat, speed behavior, and recent service history.
Do not do these checks as a household user
- Do not open the regulator or fan canopy while power is connected.
- Do not replace capacitors without safe isolation and correct part rating.
- Do not continue running a fan with burning smell, visible wobble, or mount looseness.