Vertiv Liebert DCD, Руководство пользователя

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The various errors and alarms have different message times and effects on the system. The display of a message on the TFT
can be delayed up to 5s.
Error, Alarm
Signalling
Contact
Delay Time
[s]
Effect
Pressure sensor error x 3 If differential pressure control is active: Speed to maximum.
Fan error x 10 -
Temperature sensor error x 60 If temperature control is active and no sensor can be read: Speed to maximum.
Return temperature controller
error
x 10
The Liebert® DCDactive cannot take any action because communication with
the unit is no longer possible if this error occurs. The controller itself ensures that
the valve opens in the event of malfunctions or a power failure (emergency
operation).
Door contact switch error x 60
Only one communication error to the UFN0001 OneWire adapter can be
detected. The correct function of the actual switch cannot be checked.
Leak sensor error x 60
Only one communication error to the UFN0001 OneWire adapter can be
detected. The correct function of the actual leak sensor cannot be checked.
Leak detected alarm - 10
Depending on the setting for the optional return temperature controller: close /
neutral / open.
Door open alarm - 2
Fans off, valve of the optional return temperature controller closed.
TFT main screen shows open door.
Temperature exceeded or fallen
below alarm
- 10 -
Table 5.3 Alarms on TFT Display
5 General Information
20
Vertiv™ Liebert® DCDactive Fan Module User Manual