Addendum
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IM 1272 • OPTILINE VERTICAL FAN COILS
Engineer Mode Operation
This mode is highly suggested to be operated bytrained
engineers because it is related to system parameters that will
affect the control results.
To operate:
1. Press UP and DOWN buttons for over 5 seconds to enter
into engineer mode.
2. Press UP or DOWN button to rotate the menu item and
press MODE button to enter into the item.
3. Press UP or DOWN button to change the setting and
press MODE button to confirm the setting and return
to menu item selection. For no button pressed for 10
seconds, it will go back to menu item selection.The
setting won’t be changed then.
4. To leave Engineer Mode, rotate till “END” and press
MODE button or leave the button intact for 10 seconds.
Figure 17: Engineer Mode Operation Sequence
