CONTROLLER OFFLINE Honeywell — Access Control Offline
At a glance
- Severity
- WARNING
- Domain
- SUPERVISION_SYSTEM
- Reference standard
- ISO 27001 (physical controls)
What it means
Access control out of service: untracked entries or, conversely, technicians locked out during an emergency. A security outage can prolong a technical one.
Probable causes
- Power or dedicated UPS exhausted
- Failed readers or doors
- Head-end or communication network offline
- Credentials expired after organizational changes
Where to start
Verify whether the problem is electrical (power/UPS) or logical (network, head-end, credentials) and whether doors fail secure or unlocked.
Full guided diagnosis in the app
The diagnostic tree for this fault has 3 guided steps with measurements, checks and resolutions. You'll find it in DataCIQ, one of the five IndexOS apps: free, works offline.
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The same fault on other brands
More Honeywell codes
- ALARM ROUTING FAULT — Alarms Not Notified
- H2 SENSOR ALARM — Battery Room Ventilation Failure
- ABORT ACTIVE — Suppression Release Failure
- ALARM VERIFY — False Fire Alarm
- BAT FAIL — Battery Low / Battery Failure
- BAT FAIL — Fire Panel Battery Low
- COMM FAIL — Communication Lost / Controller Offline
- COMM FAIL — Reader Offline / Reader Not Communicating