Riello HRT-177RS Manuel D'installation Et D'utilisation page 20

ERRORS
• 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
EN 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
boiler (the boiler switching on will depend on the sum-
mer/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.
TECHNICAL MENU AND SPECIAL FUNCTIONS
(ONLY FOR EXPERTISE)
The weekly thermostat incorporates a technical parameter-
ized menu accessible only with a password and the use of
this is recommended for expert personnel only.
The parameter settings change the working mode of the
thermostat, therefore the modifi cations are allowed only if
required by the particular installation.
The technical menu is accessible by the main menu under
the PL icon (see encoder paragraph for the access proced-
ure). The password to be selected is the number 53.
Inside the PL menu are present 6 parameters that can be
adjusted as described below:
PAR. DESCRIPTION
CALIBRATION: It is possible to calibrate the
transmitter temperature sensor by entering the
01 parameter. On the display will appear only
the temperature. Use the encoder to increase
or decrease the temperature. Press the en-
coder to enter the new value. From now the
transmitter uses the new value as current room
01
temperature. Please note that for the calibration
it is necessary to have a second thermometer
that will be used as master. This operation is
suggested only if the thermostat is fi xed in a
non-appropriate position, therefore it is neces-
sary to modify the value on the display to be
according the real room temperature.
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