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Faulty external temp. probe
NTC (with K set)
Flame detection error
Lack of circulation T >105°C
3.9
Flue probe
The flue probe 22 and safety thermal fuse
28 indicated in Fig. 3.8 are a safety device.
The flue probe 22 intervenes when the flue
temperature exceeds 110°C placing the
boiler in safety block switching it off.
To reset normal boiler functioning, just press
the 15 (Fig. 3.6) key.
If flue probe 22 does not intervene and,
therefore does not send the boiler into se-
curity lockout, thermofusible 28 enters into
function as a further safety measure.
This component sends the boiler into se-
curity lockout when the flue temperature
reaches 167°C.
To restore the normal operation of the boil-
er, contact the Authorized Service Centre.
22
Fig. 3.8
USEFUL ADVICE
E08
E11
E14
28
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