25
ANTI-FROST DEVICE:
The boiler is fitted with a device which, in the event that the
water temperature falls below 3
˚C, the burner ignites at
the minim
um po
wer until the boiler reaches a temperature
of approximately 33˚C in the heating circuit.
This device only operates if the boiler is functioning
perfectly and:
- the system pressure is sufficient;
- the boiler is powered electrically;
- the gas is turned on.
PUMP /DIVERTER VALVE PROTECTION:
To prevent the pump and diverter valve from siezing the
boiler will activ
ate the pump f
or 20 seconds e
v
er
y 21 hours
after it’s last operation and activate the diverter valve.
SAFETY SHUTDOWN “E”
In the event of a safety cut-off (displayed with the code
shown in the table), the boiler will automatically try to reset
itself and relight. Should this not be the case, contact an
author
ised Service Centre for assistance.
DISPLAY CAUSE
E
E
0
0
2
2
Insufficient water pressure
E
E
0
0
4
4
Domestic hot w
ater temperature probe in
open circuit
E
E
0
0
5
5
Domestic hot water temperature probe
short circuited
E
E
0
0
6
6
Heating flow temperature probe in open
circuit
E
E
0
0
7
7
Heating flow temperature probe short
circuited
E
E
0
0
8
8
Heating return temperature probe in open
circuit
E
E
0
0
9
9
Heating retur
n temperature probe short
circuited
E
E
2
2
0
0
Flame detected with gas valve closed
E
E
2
2
1
1
Error in the electrical connection (live and
neutr
al crossed)
E
E
3
3
3
3
The air pressure switch is
closed before the ignition sequence
E
E
3
3
4
4
The air pressure switch does not close
when the fan runs
E
E
9
9
9
9
More than 5 RESETS of the boiler in 15
minutes.
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