Alarm
ID
Meaning Possible Cause Handling Method
(1-4) 10
EC Fan-specific
uncategorized alarm
detected
Internal EC Fan issue
Re-boot condenser if fans not running. If alarm persists and fans not
running, replace fan.
(1-4) 11
EC Fan-specific
uncategorized warning
detected
(1-4) 12
EC Fan electronics high-
temperature condition.
1. EC Fan is locked.
2. EC Fan is damaged.
3. Ambient temperature is too
high
For cause 1, check if EC Fan is locked.
For cause 2, replace EC Fan
For cause 3, check ambient temperature.
(1-4) 13 EC Fan high link voltage
1. EC Fan input power supply
high voltage
2. EC Fan is damaged.
For cause 1, measure power supply voltage and check if the voltage is
normal
For cause 2, replace EC Fan
(1-4) 14 EC Fan low link voltage
1. EC Fan input power supply
low voltage
2. EC Fan detection error
(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.
Table 9.3 EC Fan alarm information (continued)
NOTE: (1-4) means the EC Fan addresses. For example, (1-4) 00 means 100 for EC Fan1, and means 200
for EC Fan2, and means 300 for EC Fan3, and means 400 for EC Fan4.
Vertiv | Liebert® MC™ Installer/User Guide | 97
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