BE-LCD-01 Operating and Installation Manual / Leaflet no. M375EV8 (01/2015)
20
Local controller hardware faults
Code
State
Explanation
Actions, remedial measures
H1
24 V
undervoltage
The supply voltage is too low. The sensors and
actuators are no longer supplied with sufficient
power.
Check the power supply to the
system.
H2
AI
characteristic
Analogue input signal is outside of the characteristic.
Check the voltage signal or
sensor. Check the characteristic
parameters stored in the
controller.
Control panel faults
Code
State
Explanation
Actions, remedial measures
E1
Connection
lost
Communication between the control panel and the
fume cupboard controller has been interrupted.
For technical reasons, this text always appears in
English.
Check the cable connection, the
control panel, and the controller.
E2
CP-CRC
failure
Communication between the control panel and the
fume cupboard controller is faulty.
For technical reasons, this text always appears in
English.
Check the cable connection, the
control panel, and the controller.
E3
CP not
possible
The control panel cannot be used with the controller
to which it is connected. The control panel must be
connected to a configured fume cupboard controller
or to a controller with active room management
function.
Check the wiring, assignment, and
configuration.
E4
CP memory
A hardware error occurred while accessing the
internal memory.
If the error occurs again, replace
the control panel.
Operating states, alarm messages, fault displays
5 Operation · Room control