What it means
Abnormal noise of fan
Cause: Worn fan bearings or fan blades scrape against other objects.
How to fix it
- Replace the fan.
- Check whether any cables interfere with the fan blades.
Source: FLS-ES232LC-S.pdf
Abnormal noise of fan
Fault — the ESS unit enters fault protection and stops normal operation until the fault is cleared — how it is shown (LED pattern or display code) depends on the model.
Abnormal noise of fan
Cause: Worn fan bearings or fan blades scrape against other objects.
Source: FLS-ES232LC-S.pdf
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Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.