Doc: 70-00-0958A V1.0, 20221102 © Vector Controls GmbH, Switzerland Page 10-34
Subject to change without notice www.vectorcontrols.com
Fan Only
In fan only mode, the fan speed can be set with the up ( ) or down ( ) button.
Heating or cooling is deactivated.
Note: The graphics shown are with 3-stage fan setting.
3.4.3 Temperature control
The comfort temperature set point can be adjusted in 0.5°C (1°F) steps with the up ( ) and down ( ) button and saved
ether with the operating mode button ( ), the controlling mode button ( ) or the fan button ( ). The Set symbol is
shown on the display while changing the temperature.
If the Economy mode is active, pressing the up ( ) or down ( ) button will change the controller into the
comfort mode.
3.4.4 Fan speed
The fan speed can be changed between auto, low, medium and high fan speed by pressing the fan button ( ).
With analog fan, the fan speed can be changed between auto and 1 to 6.
3.4.5 Controller start up
Normal start-up
During start-up, the backlight of the display and all LCD segments are shown for two seconds. Then the software version
and revision are shown for two seconds on the small digits (format: 1r0, means version 1 revision 0).
For TRA-F221-A, the Modbus address of the controller is shown for two seconds.
Software version (example)
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