1
3
12
5
14
15
NOTE: To gain access to trimmers (6) and (10),
unscrew the central heating potentiometer knob.
3.2
TEMPERATURE
PROBE AND WATER
PRESSURE TRANSDUCER
Antifreeze system made up of the NTC
heating sensor that activates when
the water temperature reaches 6°C.
Tables 1 - 1/a include the resistance
TABLE 1 (Sensors)
Temperature (°C)
Resistance (Ω)
20
12.090
30
8.313
40
5.828
50
4. 1 61
60
3.021
70
2.229
80
1.669
TABLE 1/a (Transducer)
Pressure
Resistance (Ω)
(bar)
mín
0
297
0,5
260
1
222
1,5
195
2
167
2,5
137
3
108
3,5
90
11
9
10
values (Ω) that are obtained on the
probe (SM) when the temperature
changes and those on the transducer
when pressure changes.
The module does not work when the
heating probe (SM) is cut off.
3.3
ELECTRONIC IGNITION
Ignition and flame detection is con-
trolled by two electrodes located on
the burner. These guarantee maxi-
mum safety with intervention times,
for accidental switching off or gas fai-
lure, of within one second.
3.3. 1 Operating cycle
Rotate the selector to summer or win-
máx
ter and check the green led ( ) to
320
make sure power is on. The burner
269
should ignite within max. 10 seconds.
228
Failed ignition consequently lighting the
200
appliance block signal may occur due
173
to the following:
143
113
– Ignition electrode does not spark
94
6
10
8
KEY
6
1 Ignition electrode earth faston
3 Fuse (1,6 AT)
5 "ANN. RIT." connector
13
6 "POT. ACC." trimmer
8 D.H.W. potentiometer
9 Detector electrode faston
10 "POT. RISC." trimmer
11 C.H. potentiometer
12 Selector CR/OFF/EST/INV/RESET
13 DIP SWITCH
14 Connector "Modureg Sel."
15 Connector "Albatros"
Only gas is supplied to the boiler and,
after 10 sec., the block led turns on.
It may be caused by the fact that the
electrode is cut-off or is not secured
in the ignition transformer terminal.
– No flame detection
At ignition, the electrode continues
to spark even though the burner is
on. After 10 sec. it stops sparking,
the burner turns off and the block
led turns on.
The detection electrode wire is cut-
off or the electrode is grounded;
the electrode is worn and requires
replacement. The electronic board
is defective.
A sudden blackout immediately turned
off the burner, when power is restored,
the boiler will automatically start.
3.4
AIR PRESSURE SWITCH
The pressure switch signal value is measured by
a specific tool connected to the positive and
negative pressure fixtures. The pressure switch
IT
ES
FR
BE
GB
RO
RUS
Fig. 13
113