Fujitsu WATERSTAGE 112 Maintenance Document page 13

Heat Pump, Split System, Single Service, 3 phase
Auto mode :
The temperature is controlled automatically:
- Heating mode according to time program
- Automatic summer/winter changeover
Continuous operating modes
The temperature setpoint is maintained:
- : Heating to the comfort setpoint
- : Heating to the reduced setpoint
Heating with no time program, no summer/winter
automatic changeover
Protection mode :
The installation is maintained at the frost protection
temperature, on condition that the heat pump supply
voltage is not interrupted.
Activate cooling mode (off if option
is not available):
Cooling mode
The "Cooling" mode adjusts the room temperature
according to the time program.
Cooling mode properties:
- Manual cooling mode
- Cooling mode according to time program
- Temperature setpoint according to "Comfort
setpoint cooling"
- Protective functions active
- Summer/winter auto changeover active
- Summer compensation
DHW Function
This key stops or allows the production of DHW and
activates the "boost" mode, which allows the nominal
temperature to be reached at any time, regardless of
the time program. Electric auxiliaries are activated if
necessary be to reach the DHW temperature
setpoint. In general they are not activated for daytime
boosting at the reduced temperature setpoint, as long
as the temperature remains below 43°C.
On: DHW is produced according to the time program
Off ---: no DHW is produced, the frost protection
function is active
To start the boost function keep the key pressed for
3 seconds. DHW production comes "on" again when
the nominal setpoint has been reached.
Maintenance Document 1394-1
Select heating mode
or :
Adjust comfort setpoint temperature
The comfort setpoint is adjusted directly by turning
the knob, the value must be confirmed with the OK
key.
Adjustment of the reduced setpoint will be described
in detail in the "control settings" section.
Display information
The information key displays various items of
information.
Error message symbol.
This symbol appears whenever there is a fault in the
installation. Press the info key for details.
Symbol for maintenance or special operating
mode, press the info key for details.
RESET
Reset symbol.
Keep the key pressed less than 3s for a reset: this
resets all error messages. This function must not be
used in normal operating conditions.
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