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29.
Dirty filter
The dirty filter function counts the fan's hours of operation and displays a flashing warning message with the icon when it
exceeds the maximum number of hours defined by parameter
192
.
In this case, the fan filter is considered to be dirty and must be changed.
To activate the dirty filter function, set the maximum number of hours with the parameter
192
(not equal to zero).
To deactivate this function, set the maximum number of hours to count
192
to 0.
With the function activated, the counter of the fan’s hours of operation is saved to the memory every 2 hours. To reset the
counter, set the parameter
203
to 1. The counter is reset and parameter
203
changes to 0 automatically and the
icon stops
flashing until the counter again exceeds the value
192..
Note: With the function deactivated the fan's operating hours are not counted.
30. Summertime changeover
The device is configured to change to summertime automatically in some areas of the world.
To be able to use this function:
- set the parameter
197
to 1 if the controller is used in Europe,
- set the parameter
197
to 2 if the controller is used in the USA. In the latter case, also set the unit of measurement to °F by
setting the parameter
196
to 1. All temperature parameters will then be expressed in °F and the controller will use this scale
automatically.
For all regions different from Europe and the USA, set the parameter
197
to 0. In this case, the summertime change cannot
be updated automatically. Update the time appropriately for the country concerned.
31. AI3 sensor used as 0...10 V input
In
AI3
sensor with input 0...10 V is used, position the JP1 jumper in the “3-2” position and set the parameter
023
to 5 or 6 or 7.
If
023
= 5, the appliance is configured to read the air quality sensor with 0..10 V output. The scale is automatically set to:
206
= 0 (scale lower end) and
207
= 2000 (scale upper end), and the unit of measurement
208
to 0 (ppm).
If
023
= 6, the appliance is configured to read the humidity sensor with 0..10 V output. The scale is automatically set to:
206
= 0 and
207
= 100, and the unit of measurement
208
to 1 (%r.h).
If
023
= 7, the appliance is configured to read a pressure transmitter with 0..10 V output. Set the lower end scale
206
and the
upper end scale at
207
. Set the unit of measurement
208
to 2.
To display the corresponding value on
display B
, set the parameter
194
to 14.
It is possible, using parameter
209,
to correct the displayed value.
Depending on the size of the scale, the value is displayed on the display with or without the decimal point.
