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13.7 Operation instructions
Power On/Off
A short press of the On/Off button will turn the power on.
Another short press of the On/Off button will turn off the power,
fan coil and motorized valve (if installed). If no buttons are
pressed for 10 seconds, the thermostat backlight turns off.
Press any button to turn the backlight back on.
Temperature Setting
With the power on, press Down to decrease the temperature
setting and Up to increase temperature in steps of 0.5°C.
The icon
will appear on the display. If no buttons are
pressed for six seconds, the icon
the setpoint is confirmed.
Mode selection
With the power on, press M to switch the operation mode.
The display indicates cooling with
ventilation with
. Auto mode can be selected in the
parameter settings and is indicated on the display with
Fan Speed Selection
With the power on, press
high, medium, low or automatic. In automatic mode, the fan
speed changes automatically. For a difference of 1°C, the fan
will automatically switch to low fan speed. For a difference of
2°C, the fan will automatically switch to medium fan speed.
For a difference of 3°C or more, the fan will automatically
switch to high speed.
Motorized Valve Control (2-Pipe Models)
In cooling (or heating) mode, the motorized valve will be
switched on when the room temperature is higher than (or
lower than) the temperature setting by 1°C . It will switch off
when the room temperature reaches the temperature setting.
Energy Saving Functions
Eco Mode
Press the ECO button
show the
and
icons. If the thermostat is in Cooling mode,
the temperature is automatically set to 26°C with the fan
running at low speed. If the thermostat is in Heating mode, the
temperature is automatically set to 18°C with the fan running
at low speed. To turn Eco mode off, press the Up or Down
buttons to change the temperature setting or press the ECO
button.
Unoccupied Energy Saving Mode
Unoccupied Energy Saving mode can be entered via a hotel
room key card. Example: after a hotel room key card is
removed from the reader,
thermostat
is
in cooling
automatically set to 28 °C with the fan running at low speed. If
14. Modbus communication protocol PAW-FC-907TC
The PAW-FC-907TC thermostat is equipped with Modbus
communication. Modbus is an open, widespread and well
established serial communication protocol used in building
automation. The support of Modbus communication allows
simple integration of the PAW-FC-907TC with a building
management
system
communication.
These parameters are defined for each thermostat in the v. If
required, adjust the settings to disable the Modbus
is displayed, indicating
, heating with
to select a fan wind/air speed of
to turn on Eco mode. The display will
and
are displayed. If the
mode, the
temperature
using
standard
Modbus
the thermostat is in heating mode, the temperature is
automatically set to 16 °C with the fan running at low speed.
When the key card is returned to the reader, the indoor
display and ECO
the previously set mode.
Sleep Energy Saving Mode
At 12:00 a.m. the
setpoint increases or decreases automatically every hour by
1°C until 3:00 a.m. Example: if the thermostat is in cooling
mode, the setpoint will increase 1°C per hour until 3:00 a.m.
then decreases 1°C per hour until the original setpoint is
reached at 7:00 a.m. and turns
heating mode, the setpoint will decrease 1°C per hour until
3:00 a.m. and then increases 1°C per hour until the original
setpoint is reached at 7:00 a.m. and
and
cooling setpoint will not rise above 26°C and the heating
setpoint will not drop below 18°C in Sleep Energy Saving
Mode.
.
Time Setting Function
During power-on, press and hold M for six seconds to enter
the Time Setting mode. Press the mode button M again to
select the hour, minute and week. Press the Up and Down
buttons to adjust this parameter. Time Setting mode is exited
automatically if no button is pushed for six seconds.
Button Lockout Function
Press and hold the Up and Down buttons at the same time for
six seconds to activate the keypad lockup function to prevent
thermostat operation by others. While lockout is active, the
lock icon
lockout function, press and hold the Up and Down buttons at
the same time for six seconds to unlock the system.
Low Temperature Protection Function
If the thermostat is switched off and the room temperature
drops below 5°C, the thermostat will start automatically for
heating and display the
speed automatically and the motorized valve will be opened.
When the room temperature rises to 7°C, the low temperature
protection function is cancelled and the thermostat will stop
automatically, returning to its previously switched off state.
Low Temperature Protection Function
In the event of an operating exception with the temperature
sensor (either built-in or external, depending on which is
selected), the thermostat will attempt to command the fan and
valve to close, place the device in an inoperative state and
display the
E1: Sensor short-circuit alert
E2: Sensor open-circuit alert
is
'HI' will be displayed if the temperature is higher than 50°C.
'Lo' will be displayed if the temperature is lower than 0°C.
The thermostat communicates as a Modbus RTU slave device
over a serial RS-485 connection, allowing for the transfer of
real-time data.
The RS-485 communication parameters can be adjusted as
follows:
serial
•
•
•
connection. All of these settings can be completed under
menu items 12 to 15.
36
icon turn off and the thermostat returns to
icon turns on. The temperature
will be displayed on the screen. To deactivate the
symbol. The fan will run at high
icon and an 'E1' or 'E2' alert.
Baud Rate: 4800, 9600, 19200 and 38400 bps
Parity check: Odd, Even and None
Device Modbus Address: 01 to 64
off. If the thermostat is in
turns off. The
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