DE - 401
Low Not assessed Fan on HVAC / HV-FAN-401
Not in alert.
Likely faults
| Fault | Likelihood | Seen on |
|---|---|---|
| Sensor issue | 70% | stream b371e7ab |
| VFD electrical noise | 60% | stream b371e7ab |
| Structural looseness | 30% | stream b371e7ab |
| Soft foot | 30% | stream b371e7ab |
| Loose connections | 10% | stream b371e7ab |
Each axis is analysed on its own; a fault seen on several shows the highest likelihood any of them reports, never a sum.
What changed
No active changes.
Trends
Measurement time 2026-09-26 06:43 to 2026-10-27 13:42 (UTC). ▏went into alert · ▏back to low, cleared or as the evidence faded — from Multiviz's priority history.
Vibration level
How strongly the machine vibrates at this point. A rise here is what usually lies behind an alert: compare it with the alert marks.
Reported by the sensor itself, about every 5 min. MultiViz also computes it from each waveform (about every 13 h); the sensor's value is shown because it comes more often. The two may differ: each uses its own frequency range.
Impacting
Short, sharp impacts, as from a damaged bearing, raise crest factor and kurtosis — often before the overall level moves.
Reported by the sensor itself, about every 5 min. MultiViz also computes it from each waveform (about every 13 h); the sensor's value is shown because it comes more often. The two may differ: each uses its own frequency range.
Computed by MultiViz from each vibration measurement (waveform), about every 13 h.
Computed by MultiViz from each vibration measurement (waveform), about every 13 h.
Operating conditions
What the machine was doing. A change in speed or temperature explains many changes in vibration.
Reported by the sensor itself, about every 5 min.
Nothing recorded for this measuring point yet.
Sensor health
About the sensor, not the machine: a flat battery or a weak signal shows up as gaps in the data.
Reported by the sensor itself, about every 5 min.
Reported by the sensor itself, about every 5 min.
Record a status
Your verdict, recorded here and sent to Multiviz as a clear of the point: its priority drops to low and rises again only on what is detected after now. It counts once Multiviz has accepted the clear.
Axes
| Axis | Priority | Latest measurement | |
|---|---|---|---|
| Stream 41816fa2 | Low | 2026-10-26 06:38 | Analysis and trends → |
| Stream 46bf48b8 | Low | 2026-10-26 06:38 | Analysis and trends → |
| Stream b371e7ab | Low | 2026-10-26 06:38 | Analysis and trends → |
History
Priority
Each time the point's level changed, from Multiviz's priority history (bounded by the deployment). A fall to low says how the alert ended: a clear, or the evidence faded.
| Data as of | Priority | What happened | Because of |
|---|---|---|---|
| 2026-10-26 06:38 | Low | — | an analysis |
Clears
Never cleared.