BE-LCD-01 Operating and Installation Manual / Leaflet no. M375EV8 (01/2015)
12
5 Operation · Fume cupboard control
Alarm messages
Code
State
Explanation
Actions, remedial measures
A1
Volume flow
rate too high
The volume flow rate exceeds the setpoint value.
Check the actuator and the
controller.
A2
Volume flow
rate too low
The volume flow rate falls short of the setpoint value.
Check the pressure. Check the
volume flow rate transducer.
A3
Face velocity
The face velocity falls short of the threshold value.
Check if the sash opening is too
wide. Check the volume flow rate.
Check the pressure.
Configuration faults
Code
Message
Explanation
Actions, remedial measures
C1
Software
version
Not all controllers have the same software version
installed.
Have the correct software
version installed by the Service
department.
C2
No. of
controllers
> 24
More than 24 controllers have been connected to the
communcation cable.
Reduce the number of controllers.
C3
Communication
cable
termination
The communication cable has not been terminated
properly. An active terminal resistor is required at
each end of the communication cable.
Activate the terminal resistors
using a switch on the EASYLAB
TCU3 main PCB.
C4
RMF
configuration
The room management function has not been
activated on any of the controllers.
Activate the RMF on a controller.
C5
dP controller ≠
1
Configuration of differential pressure control is
incomplete. There is either no differential pressure
controller on the communication cable, or the room
management function is not active.
Include a differential pressure
controller. Activate differential
pressure control in the room
management function.
C6
System
conflict
Not all controllers are of the same system type.
Connect either supply air
controllers or extract air controllers
but not both.
Operating states, alarm messages, fault displays