33
3.7
B
OILER
S
AFETY
S
YSTEMS
The boiler is protected from malfunctioning by means of
internal checks by the P.C.B.,
which brings the boiler to a stop if
necessary.
There are two types of shut-off:
• SHUTDOWN (
A
)
• SAFETY SHUTDOWN (
E
)
SHUTDOWN “
A
A
”
This type of appliance shutdown is called “non-volatile”, and
is indicated on the display by a number preceded by the
letter (
A
) , and by the symbol (G F
IG
. 2.23 Page 21), as
illustrated in the table below:
WARNING!
The boiler is still powered.
Important
If this shutdown occurs frequently, contact an
authorised Service Centre for assistance. For safety
reasons, the boiler will allow a maximum of 5 reset
operations to take place in 15 minutes (pressing the
RESET button).
If the shutdown is occasional or an isolated event, this is
not necessarily a problem.
1
2
3
4
5
6
1
2
3
4
5
6
E
C
II
D
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
authorised Service Centre for assistance.
1
2
3
4
5
6
1
2
3
4
5
6
E
C
II
DISPLAY
CAUSE
A
A 0
01
1
No flame after safety time (7 seconds)
A
A 0
03
3
The heating flow temperature exceeds 103
o
C
during operation
A
A 7
77
7
Condensate Trap full of water
Condensate sensor short circuited
Condensate sensor in open circuit
A
A 7
75
5
Flue temperature thermostat overheating
A
A 9
97
7
Problem with the electronic monitoring
A
A 9
98
8
Problem with the electronic monitoring
A
A 9
99
9
Problem with the electronic monitoring
DISPLAY
CAUSE
E
E 0
02
2
Insufficient water pressure
E
E 0
04
4
Domestic hot water temperature probe in
open circuit
E
E 0
05
5
Domestic hot water temperature probe
short circuited
E
E 0
06
6
Heating flow temperature probe in open
circuit
E
E 0
07
7
Heating flow temperature probe short
circuited
E
E 0
08
8
Heating return temperature probe in open
circuit
E
E 0
09
9
Heating return temperature probe short
circuited
E
E 2
20
0
Flame detected with gas valve closed
E
E 2
21
1
Error in the electrical connection (live and
neutral crossed)
E
E 3
33
3
The air pressure switch is
closed before the ignition sequence
E
E 3
34
4
The air pressure switch does not close
when the fan runs
E
E 9
99
9
More than 5 RESETS of the boiler
in 15 minutes.
Содержание microGENUS HE 24 MFFI
Страница 20: ...20 Fig 2 22 NOTE DRAWINGS ARE INDICATIVE OF FLUEING OPTIONS ONLY TYPE 1 TYPE 5 TYPE 4 TYPE 3 TYPE 2 FIG 2 21...
Страница 68: ...68 10 BENCHMARK COMMISSIONING CHECKLIST...
Страница 69: ...69 11 SERVICE INTERVAL RECORD...
Страница 70: ...70...
Страница 71: ...71...
