11-24
CONTROL SYSTEM
SM YAZDCI 1-A.1 GB
11.7.2
Technician mode procedure
All the connected indoor units will enter technician test at high indoor fan speed.
The outdoor unit will be working normally (according to the run mode control logic) except the
following changes:
The dry contacts inputs will be ignored.
o
Protections will be operative for stop compressor (not to be implemented in the current
o
version).
The compressor and the outdoor fan will be working in target preset values according to the
o
following table:
Technician Test
Unit
Compressor Speed
OFAN speed
Cool
Heat
Trio
60
67
850rpm
Quattro
62
72
850rpm
11.7.3
Exiting technician mode
Technician mode will be exited either when:
Escaping by the HMI (exiting the ttC or ttH menus)
o
60 minutes are passed from entering
o
11.8 User
Interface
11.8.1
User interface description
The user interface uses three 7 segments, and 4 keys.
o
Keys, The 4 keys are:
o
Scroll - used to scroll between options (up and down)
-
Select - use to select an option
-
Escape - Will go up one level in the menu
-
The user interface concept is Tree menus.
o
Active selection or status will be indicated by blinking the
o
display.
11.8.2 Keys
functionality
Scrolling will be done whenever the button is pressed.
o
When scrolling alpha values, if the scroll button is held in, the selection will change at the rate
o
of one step per second.
When changing/scrolling numeric value, if the scroll button is held in, the selection will change
o
at the rate of one step per second. After 2 seconds, if the button continues to be held in, the rate
of change will increase to 10 steps per second.
The display will not roll over during selection
o
Up
Down
Esc
Select
