TFHB24F3XYZ1
Specification & Installation Instructions
9
Operation Mode
Step Description
Display
A
At powering up, thermostat will light display and activate all LCD segments during 2 seconds.
Illuminating the LCD.
To illuminate the LCD, you just have to push onto any of the 4 buttons. LCD will light for 4 seconds.
Temperature display
In operation mode, thermostat will automatically display the temperature reading for 8 seconds.
Humidity reading will be displayed for 2 seconds.
If “
OFF
”, “
- - -
” and alarm symbol are displayed, the temperature sensor is not connected or short
circuited.
To change the scale between ºC and ºF, press on both
'
and
for 3 seconds.
C
B
Temperature set point display and adjustment
To display the set point, press two times on
'
or
. Set point will be displayed during 3 seconds.
To adjust set point, press on
'
or
while the temperature set point is displayed.
Note: If set point adjustment has been locked,
symbol will be displayed.
C
C
C
Humidity set point display and adjustment
Humidity set point menu will be access by pushing
button for 5 seconds. When in this mode
“ADJUST HUMIDTY SETPNT”
is displayed. Set point will be displayed during 5 seconds.
To adjust set point, press on
'
or
while the humidity set point is displayed. If you press on button
or
, you will leave the humidity set point menu.
Humidity display
In operation mode, when humidity reading is displayed for 2 seconds, if “
- - -
” and alarm symbol are
displayed, the humidity sensor is not connected or short circuited.
%RH
%RH
D
No occupancy mode :
When thermostat is in no occupancy mode, moon symbol is displayed, so set point for cooling
and/or heating are increased as per the setting made in programming mode.
If not locked, no occupancy mode can be derogated for a predetermined period by pressing onto
any of the 3 buttons. During period of derogation the symbol will flash. If does not flash, the
derogation period is finished or the no occupancy mode derogation has been locked in
programming mode.
C
E
Control mode selection :
To change the control mode, press on
. Control mode will be displayed during 5 seconds. You
can choose one of the following:
9
Automatic Cooling or Heating
9
Cooling and Heating OFF
9
Cooling
only
9
Heating
only
Note: These selections can vary according to the choice made on steps #6 & #7.
F
Fan speed mode selection:
To change the fan speed mode, press on
. Fan speed mode will be displayed during 5 seconds.
You can choose one of the following:
9
Automatic speed (if not disable in programming mode)
9
Low
speed
9
Medium
speed
9
High
speed
Note: These selections can vary according to the choice made on step
#33 &
#36.