Alarm ID Meaning Possible Cause Handling Method
(1-4) 15
EC Fan 485 communication
failure
1. Communication between EC
Fan and PCB board failure
2. EC Fan 485 communication
failure
3. Board has problems.
4. EC fan not receiving power.
For cause 1, check EC Fan communication circuit.
For cause 2, replace EC Fan.
For cause 3, replace PCB board.
For cause 4, check fan model is not set for 0, check that the contactor for
the particular fan is energized, and check fan fuses.
(1-4) 16 EC vibration warning Fan blade imbalance
Check ice has not formed on blades. Check to verify mounting bolts and
secure. Replace fan.
(1-4) 17 EC Fan bearing fail Fan bearings have failed. Replace fan.
Table 10.4 EC Fan Alarm Information (continued)
10 Control Operation Proprietary and Confidential ©2024 Vertiv Group Corp. 49
Vertiv™ Liebert® MCV Installer/User Guide
To Next Page
Loading...
