boiler protection devices
29
The boiler is protected from malfunctions by means of internal
checks performed by the electronic P.C.B., which stops the boiler
from operating if necessary. In the event of the boiler being shut o
in this manner, a code appears on the control panel display which
refers to the type of shut-o and the reason behind it.
Two types of shut-o may occur:
Safety shut-o
This type of error is “volatile”, which means that the boiler starts up
again automatically as soon as the problem which caused the shut-
o is removed.
The display will visualise the error code and description.
“Fault 110 - Send Probe Damaged”
In fact, soon as the cause of the shut-o disappears, the boiler
starts up again and continues to operate normally.
If the boiler still indicates a safety shut-o , switch it o . Make sure
the external electric switch is in the OFF position, shut o the gas
valve and contact a quali ed technician.
Safety shut-o due to insu cient water pressure
If the water pressure inside the heating circuit is insu cient, the
boiler will perform a safety shut-o .
The error code “Fault 108 - Filling Needed” appears on the display
The system may be restarted, re-balancing the value, by using the
lling valve.
Check the pressure on the pressure gauge and close the valve as
soon as it reaches 1 - 1.5 bar.
If the re-balancing request is performed on a frequent basis, switch
the boiler o , bring the external electric switch to the OFF position,
shut o the gas valve and contact a quali ed technician to check
for any leaks of water.
Operation shutdown
This type of error is “non-volatile”, which means that it is not
removed automatically.
The display will visualise the error code and description.
“Fault 501 - No ame detected - Press the Reset button”
In this case the boiler does not restart automatically, but it may be
reset by pressing the button.
Fault 108
Filling Needed
ALERT
Fault 110
Send Probe Damaged
ALERT
Call the technical service
Fault 501
No flame detected
Press the Reset button
ALERT
Reset in progress
Fault solved
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.
The rst gure of the error code (e.g. Errore 101) 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 - Multizone
Malfunction warning
This warning is shown by the display in the following format:
Warning 5P1 = 1st Ignit Failed
the rst gure indicating the operational assembly is followed by a P
(warning) and the code relating to the speci c warning.
Table summarising error codes
Central Heating circuit
Display Description
101 Overheat
102 Pressure Sens Error
103
Insu cient circulation
104
105
106
107
108 Insu cient water (request lling)
110 C.H. Flow temp. probe circuit open / short circuit
112 C.H. Return temp. probe circuit open / short circuit
114 External sensor circuit open / short circuit
116 Floor Thermostat contact open
118 Heating delevery probe problem
1P1
Insu cient circulation indication1P2
1P3
1P4 Insu cient water (request lling)
D.H.W. circuit
203 Tank Probe Damaged
205 DHW In Probe Open Circuit
209 Tank Overheat
Internal P.C.B.’s
301 EEPROM error
302 Comunication error
303 Main P.C.B. error
304 Too many (> 5) resets in 15 minutes
305 Main P.C.B. error
306 Main P.C.B. error
307 Main P.C.B. error
3P9 Sched.Maintanace-Call Service
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