Xiaomi error codes and fault guides
Browse 8 published, evidence-gated Xiaomi guides. Each page states the supported model and region, official source, safe checks, and the point to stop.
Xiaomi fault guides
1–8 of 8
the Smart Air Purifier 4 may have a filter, foreign-object, or sensor obstruction
Abnormal noise is identified by Xiaomi support as the Smart Air Purifier 4 may have a filter, foreign-object, or sensor obstruction. Follow the official, model-scoped checks and service boundary below.
the filter-compartment cover is not detected as closed
Cover unclosed is identified by Xiaomi support as the filter-compartment cover is not detected as closed. Follow the official, model-scoped checks and service boundary below.
the purifier cannot confirm the expected genuine filter installation
Filter installation warning is identified by Xiaomi support as the purifier cannot confirm the expected genuine filter installation. Follow the official, model-scoped checks and service boundary below.
the filter is nearly exhausted
Filter life below 5% is identified by Xiaomi support as the filter is nearly exhausted. Follow the official, model-scoped checks and service boundary below.
the upper grille is not detected as closed
Grille unclosed is identified by Xiaomi support as the upper grille is not detected as closed. Follow the official, model-scoped checks and service boundary below.
the Mijia Smart Air Purifier 6 has detected a motor condition
Motor error is identified by Xiaomi support as the Mijia Smart Air Purifier 6 has detected a motor condition. Follow the official, model-scoped checks and service boundary below.
the laser particle sensor reading may be inaccurate or delayed
PM2.5 reading abnormal is identified by Xiaomi support as the laser particle sensor reading may be inaccurate or delayed. Follow the official, model-scoped checks and service boundary below.
the Xiaomi Smart Air Purifier 4 does not detect a closed top grille
Top grille not closed is identified by Xiaomi support as the Xiaomi Smart Air Purifier 4 does not detect a closed top grille. Follow the official, model-scoped checks and service boundary below.