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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
automatically as soon as the problem which caused the shut-off is re-
moved; the error is indicated 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
1 08
-
Shut-off due to insufficient water pressure
inside the heating circuit - the boiler will perform a safety shut-off.
You can increase the pressure by filling 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 qualified 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.
The first figure of the error code (e.g. 1 01) indicates within which
operational assembly the error occurred.
1 - Primary Circuit
- Domestic Hot Water Circuit
3 - Internal Electronic Part
4 - External Electronic Part
5 - Ignition and Detection
6 - Air inlet - flue gas outlet
Malfunction warning
This warning is shown by the display in the following format:
5 P1 = FIRST IGNITION ATTEMPT UNSUCCESSFUL
the first figure indicating the operational assembly is followed by a P
(warning) and the code relating to the specific warning.
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.
Anti-frost Device.
The anti-frost function acts on the central heating flow temperature pro-
be, independently from other regulations, when the electrical supply is
turned on.
If the primary circuit temperature is between 3°C and 8°C the
pump will run (with the diverter valve switching between cen-
tral heating and hot water every 1 minute) until the temperature
reaches > 9°C.
If the flow temperature remains between 3°C and 8°C the pump will con-
tinue to run for a maximum of 0 minutes unless a temperature above >
9°C is detected in the central heating flow, after this the the burner will fire
(heating position) until a temperature of > 30°C is detected.
If the central heating flow temperature is < 3°C, the burner will fire (hea-
ting position) at minimum power until the temperature reaches > 30°C,
the burner will go out.
If lockout is caused by overheat the burner will not fire but the pump will
continue to run (heating position).
The anti-frost device activates only when (with the boiler operating cor-
rectly):
- the system pressure is correct;
- the boiler is electrically powered;
- there is a supply of gas.
Table summarising error codes
Central Heating circuit
Display Description
1 01
Overheat
1 02
Pressure Sens Error
1 03
Insufficient circulation
1 04
1 05
1 06
1 07
1 10
C.H. Flow temp. probe circuit open / short circuit
1 08
Insufficient water (request filling)
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 delevery probe problem
1 P1
Insufficient circulation indication
1 P2
1 P3
D.H.W. circuit
2 01
D.H.W. temp. probe circuit open / short circuit
2 02
Bottom storage temperature probe open / short circuit
Solar k
it
(optional)
2 04
Solar collector temperature probe open / short circuit
2 07
Solar collector overheating
2 08
Collector frost protection temperature
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
External P.C.B.’s
4 07
Room sensor circuit open 7 short circuit
Ignition and Detecion
5 01
No flame detected
5 02
Flame detected with gas valve closed
5 04
Flame lift
5 P1
1st Ignition Failed
5 P2
nd Ignition Failed
5 P3
Flame cut-off
Air Inlet / Flue gas outlet
6 04
Insufficient fan speed
6 10
Thermofuse open
Multi-zone Heating (Heating Zone Modules - optional)
7 01
Zone outgoing sensor defective
7 02
Zone return sensor defective
7 03
Zone 3 outgoing sensor defective
7 04
Zone 3 return sensor defective
7 05
Hydraulic separation sensor defective
7 06
Zone overheating
7 07
Zone 3 overheating
