ENGLISH
View alarm menu
(fig.26)
Before proceeding with the steps indicated below, press
the ESC button to exit and return to the initial menu.
The indication of any alarm conditions that may have
been tripped can be displayed as follows:
--press and hold the SET button
--press and release the UP or DOWN button to view
ALRM menu
--press and release the SET button to view the active
error code The various alarm situations that can affect
the system are displayed on the user panel as follows:
ti
: indoor temperature sensor faulty; contact Technical
Support for assistance;
tout
: outdoor temperature sensor faulty; contact
Technical Support for assistance;
te
: exhaust air temperature sensor faulty; contact
Technical Support for assistance;
preh
: preheater faulty or missing (if applicable); contact
Technical Support for assistance;
Hito
: outdoor temperature higher than 45 °C; contact
Technical Support for assistance;
Hiti
: indoor temperature higher than 45 °C; contact
Technical Support for assistance;
Filt
: clogged filters need replacing (2 months). Once new
filters have been fitted, the error can be reset by the user:
this is done simply by pressing and holding the UP and
DOWN buttons together.
N.B.
Manually resettable errors can be removed by
pressing and holding the UP and DOWN buttons
together.
“Modbus” function
The appliance is accessible from a network using
Modbus protocol, connected via a serial port that must
be configured appropriately by the installer. With this
connection, certain operating parameters of the
appliance can be controlled or displayed remotely.
Where the appliance is wired into a "domotic" system,
the appliance will be able to communicate with the rest
of the network. The cable needed for this connection is
supplied with the product.
Maintenance/Cleaning
Before commencing any servicing operation, make
certain that the appliance is disconnected from the
power supply. Dismantling and assembly are special
maintenance operations and must be entrusted to
professional technicians.
Filters
Recommended maintenance intervals:
Because levels of air pollution depend typically on
geographical location and are variable, the life of the
filters will be similarly variable. With this general
consideration in mind, the following maintenance
intervals are recommended:
Models TWO
:
Inspect filters: every 50/60 days;
replace filters: every 4 to 6 months.
Model TWO F
:
Inspect filters: every 50/60 days;
replace filters: every 4 to 6 months. With this model, the
system automatically displays an early warning message
on the control panel, at around x-2 months after a new
filter is fitted, and at the end of x months, an alarm
message causing the appliance to lock up. The system
can be reactivated by resetting the error on the control
panel, or simply by fitting new filters. The installer must
set value x (minimum 4, maximum 6) when the system is
first put into operation.
N.B.
Failure to clean or replace filters can seriously affect
the efficiency of the system, causing:
- higher pressure losses in the air circuit and lower air
flow rate;
- consequently, a reduction in performance of the
appliance, and less comfortable room conditions.
N.B.
Clogged air filters are the most frequent cause of
the appliance locking up.
esc
set
By-Pass
/ °C
1
2
3
4
5
6
7
FILT
P1
P2
Prg
26
226
HA
25
