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COMMISSIONING
3.24 Switching off for lengthy periods
If the boiler is not used for a long time, the following
operations must be carried out:
ƒ set the status of the boiler to
ƒ Set the system's main switch to "off"
ƒ Turn off the fuel and water taps of the heating and
domestic hot water system.
In this case, the anti-freeze and anti-blocking systems
are deactivated. Drain the heating and domestic water
system if there is any risk of freezing.
Position
position
3.25 Keypad lock function
Press buttons 1+3 for at least 2 seconds to activate the
keypad lock; press them again for at least 2 seconds to
deactivate the lock.
The display shows the sliding string LOCK.
+
Button 2 may remain active if there is a fault, so the
alarm can be reset.
3.26 Alarm log
The alarm log is active with parameter P7.01=1 (SERVICE).
The alarms can be visualised:
- in the INFO menu (from I039 to I043), in chronological order
from the most recent to the oldest, up to a maximum of 5
after 2 hours of operation
- on the OT+ remote control (if connected and supported)
If an alarm occurs several times consecutively, it is saved
only once.
To reset the alarm, follow the indications given in paragraph
"3.11 Reset function".
+
RESET
MENU
1
3
+
3.27 Interface standby
If there are no faults or heat requests, the display always
shows the temperature measured by the flow sensor.
After 10 seconds with no heat requests and no buttons
pressed, the interface goes into standby. The display
shows the current time, with the two points separating
the hours from the minutes flashing (0.5 sec ON, 0.5 sec
OFF). The status icons will be activated if necessary:
3.28 Replacing the interface
System configuration operations must be carried out by
professionally qualified Aftersales Service personnel.
If the interface board is replaced, the user may be asked
to reset the time and day values (see paragraph "3.2
Programming the boiler") when the power is switched
back on. Note that it is not necessary to reprogram the
configuration parameters as their values are retrieved by
the adjustment and control board in the boiler. It may,
however, be necessary to reset the DHW and heating set-
point values.
3.29 Replacing the board
If the adjustment and control board is replaced, it may
be necessary to reprogram the configuration parame-
ters.
In this case, refer to the parameter table ("1.13 Structure
menu") to see the board default values, the factory-set
values, and the personalised values.
The most important parameters which must be checked
and possibly reset when the board is replaced are the
following:
P3.01
P3.02
P3.03
P3.06
P3.07
P3.08
P3.09
P5.07
P7.08 (WARNING - set the parameter at 0).
42
+
RESET
MENU
> 2 sec
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