Service Manual

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The access to the data visualization mode, is made by entering first in the “service mode” and then,
scrolling to the parameter “P4” of the adjustment mode.
Diagnostic mode and
visualization mode
Installer Level Technician Level Comments
This mode helps the
installer in the
startup to check
parameters such as
water flow through
the appliance and
inlet / outlet
temperatures
This mode helps
the technician to
find some
information useful
to adjust and to
check functionality
of the appliance.
Main recommendation
is to perform always a
check on the last 10
failures in memory in
order to analyze
eventual problems in
installation that might
need to be corrected
Table 21 – P4
By pressing the “P” button while the display shows “P4”, the LCD will enter into visualization mode
and will show “E”, meaning “Exit” from the visualization mode. By pressing “P” button again, the LCD
will show “P4”, i.e. the visualization mode has been exited.
After entering into data visualization mode (showing “E”) and then pressing “+” or “-” button, the
parameter and failure visualization fields can be selected as shown in Table 22.
Sequence of
Parameters in P4
Comment Value / Unit
Entry / Exit of visualization mode
Possible change of set point
without leave service mode and
perform any needed control
ºC or ºF
Temperature indication
Inlet water temperature
Temperature read by inlet sensor
ºC or ºF
Temperature indication
Hot water temperature
Temperature read by outlet sensor
ºC or ºF
Water flow indication
l/min (±0.5l/min)
Indicates water flow measured by
the turbine (l/min or gal/min.)
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