VDH ALFA 10, User Manual, Page: 2 / 4

2
* Setting internal parameters.
To enter the internal parameter menu, use the following instructions;
By pushing the
DOWN key more than 10 seconds, you enter the ‘internal programming menu’. In the
left display the upper and lower segments are blinking. Over the UP and DOWN keys the required
parameter can be selected (see table for the parameters). In this case only ‘04’ offset temperature
sensor.
If the required parameter is selected, the value can be read-out by pushing the
SET key. Pushing the
UP and DOWN keys together with the SET key allows you to change the value of this parameter.
If after 20 seconds no key is pushed, the ALFA(NET) 10 changes to its normal operation mode.
* Parameters ALFA(NET) 10.
PARA-
METER DESCRIPTION PARAMETER RANGE STANDARD
VALUE
04 Offset temperature sensor -15..+15

C 0
90
95
96
97
98
99 Network number
Software version
Production year
Production week
Serial number (x1000)
Serial number (units) 1..250
0..255
00..99
1..52
0..255
0..999 1
-
-
-
-
-
* Adjustment sensor.
The sensor can be adjusted by using the Sensor Offset (parameter 04). Indicates the ALFA(NET) 10
e.g. 2

C too much, the Sensor Offset has to de decreased with 2

C.
* Error messages.
In the display of the ALFA(NET) 10 the following error messages can appear:
Er - Sensor broken. Solution:
- Check if the sensor is connected correctly.
- Check the sensor (1000
 at 25

C).
- Replace the sensor.
EE - Settings are lost. Solution:
- Reprogram the settings.