Siemens FDA241 Technical Manual page 25

Display Designation
Operating indication
Blowing-out indicator
Indication of faults
Airflow indicator
a) LED yellow
b) LED green
c) LED yellow
Building Technologies
Fire Safety
Function
The green LED lights up permanently:
 When the power supply is connected
The yellow LED lights up permanently:
1
When the blowing-out process is activated

The yellow LED flashes:
Once the blowing-out process has been activated until the normal operating status

is achieved (lasts up to 2 minutes)
The yellow LED flashes:
When there is a technical fault

When the housing cover is opened

The current airflow is indicated by an LED in the airflow indicator (bar graph indicator).
If a yellow LED lights up, the airflow has increased.
As the deviation increases, the light moves upwards.

If the topmost LED flashes, the airflow has exceeded the upper limit and the alarm delay
time has expired.
Example: There may be a leak in the pipe system.
One of the green LEDs lights up.
The airflow is normal.
If a yellow LED lights up, the airflow is too low.
 As the deviation increases, the indicator moves downwards.
If the bottommost LED flashes, the airflow has fallen below the lower limit and the alarm
delay time has expired.
Example: Some of the aspirating holes in the pipe system may be blocked.
Structure and function
Setup
A6V10334410_h_en_--
2015-09-29
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