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BOILER PROTECTION DEVICES
Boiler protection devices
The boiler is protected from malfunctioning by means of internal
checks performed by the electronic microprocessor P.C.B., which
stops the boiler from operating if necessary.
In the event of the boiler being shut off in this manner, a code
appears on the display which refers to the type of shut-off and
the reason behind it.
There are two types of shut-off:
Safety shut-off
This type of error is “volatile”, which means
that the boiler starts up again automati-
cally as soon as the problem which caused
the shut-off is removed; the error is indicat-
ed by the «
» symbol which appears
on the display and the error code.
In fact, soon as the cause of the shut-off
disappears, the boiler starts up again and
continues to operate normally.
In the event of error 108 - Shut-off due to insufcient water
pressure inside the heating circuit - the boiler will perform a
safety shut-off.
You can increase the pressure by lling the
heating circuit.
In this case or if the re-balancing request is
performed on a frequent basis, switch the
boiler off, turn the external electric switch to
the OFF position, shut off the gas cock and
contact a qualied technician to check for
any leaks of water.
Shutdown
This type of error is “non-volatile”, which means that it is not
removed automatically. To restore normal operation press the
button on the control panel.
Important
If this shutdown occurs frequently, contact an authorised
Technical Service Centre for assistance. For safety reasons, the
boiler will permit a maximum of 5 resets in 15 minutes (5 presses
of the RESET button); at the 6th attempt within this 15-minute
period the boiler will shut down and may only be operated
again after the electricity supply has been disconnected. If
the shutdown is occasional or an isolated event, this is not a
problem.
Malfunction warning
This warning is shown by the display in the following format:
5 P1 = FIRST IGNITION ATTEMPT UNSUCCESSFUL
the rst gure indicating the operational assembly is followed
by a P (warning) and the code relating to the specic warning.
The rst gure of the error code (e.g. 1 01) indicates within which
operational assembly the error occurred.
1 - Primary Circuit
2 - Domestic Hot Water Circuit
3 - Internal Electronic Part
4 - External Electronic Part
5 - Ignition and Detection
6 - Air inlet - ue gas outlet
7 - Multi-zone Heating
Table summarising error codes
Central Heating circuit
Display Description
1 01
Overheat
1 03
Insufcient circulation
1 04
1 05
1 06
1 07
1 08
Insufcient water (request lling)
1 09
System pressure > 3 bar
1 10
C.H. Flow temp. probe circuit open / short circuit
1 12
C.H. Return temp. probe circuit open / short circuit
1 14
External sensor circuit open / short circuit
1 16
Floor Thermostat contact open
1 18
Heating delivery probe problem
1 P1
Insufcient circulation indication
1 P2
1 P3
1 P4
D.H.W. circuit
2 05
DHW In Probe Open Circuit (Solare temp. probe)
Internal P.C.B.’s
3 01
EEPROM error
3 02
Comunication error
3 03
Main P.C.B. error
3 04
Too many (> 5) resets in 15 minutes
3 05
Main P.C.B. error
3 06
Main P.C.B. error
3 07
Main P.C.B. error
3 P9
Sched.Maintanace-Call Service
External P.C.B.’s
4 11
Room sensor circuit open or short circuit ZONA 1
4 12
Room sensor circuit open or short circuit ZONA 2
4 13
Room sensor circuit open or short circuit ZONA 3
38


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