Ferroli HRT-176RS Manual De Instalacion Y Uso página 13

• In the case of missing communication between the re-
ceiver and the transmitter, the red or green led on the
receiver starts to blink irregularly, after 350 sec of the
communication being lost. The above error can happen
either when the battery power on the transmitter is low
(battery icon ON on the transmitter display) and when
the location of the transmitter is not suitable (too far a
distance or internal home disturbs like a concrete wall
or electronic interference etc.). Once the communication
has returned, the transmitter automatically returns to a
normal working mode.
• In the case of missing communication, the receiver will
automatically switch on the heating requested to the boil-
er (the boiler switching on will depend on the summer/
winter position on the boiler dashboard, not from the
thermostat request). This will prevent freezing in case
of missing communication between the receiver and the
transmitter in winter position.
• If the receiver is located at the limit of wireless maximum
distance, the receiver can lose the communication for a
while and then back to normal working mode.
• In the case of missing supply to the receiver (electrical
black out), the communication will be lost but at the re-
turn of the electricity, the receiver will automatically return
to a standard working mode according to the transmitter
signal. There is no requirement for any special operation
on the receiver/transmitter in the case of missing com-
munication unless it is necessary to change location of
the transmitter.
• This product has one-direction radio frequency from
the transmitter to the receiver, this means that only the
receiver can recognize the missing communication. No
advise will be displayed on the transmitter in the case of
missing communication.
PARAMETERS SETTING (ONLY FOR EXPERTISE)
The thermostat incorporates a technical parameterized menu
accessible only pressing the push button located on internal
printed circuit board and the use of this is recommended for
expert personnel only. The parameter settings change the
working mode of the thermostat, therefore the modifications
are allowed only if required by the particular installation. To
locate the push button on the board, open the thermostat
separating the front plate from the wall hung plate. Press for
5 second the button, the display will show P01; scroll the pa-
rameters list P01-P02-P03-P04-P05-ESC rotating the main
knob. To enter and modify each parameter press again. Se-
lect the new values, press again to enter and escape. Use
the ESC parameter to escape from the technical menu.
The parameters that can be adjusted as described below:
PAR. DESCRIPTION
HYSTERESIS ON. The value selected with this pa-
rameter indicates when the heat request is activated.
The factory setting is 0,2°C, values range between
P01
0,0°C and 2,0°C. Heat requests switch ON when the
room temperature drop below the room target tempe-
rature minus the hysteresis ON value.
HYSTERESIS OFF. The value selected with this para-
meter indicates when the heat request is stopped. The
factory setting is 0,4°C, values range between 0,0°C
P02
and 2,0°C. Heat requests switch OFF when the room
temperature reaches the room target temperature
plus the hysteresis OFF value.
13
EN