12
ON-OFF KEY
Display symbols
The ON/OFF (J7) key, in addition to put the
boiler in stand-by mode, allows to reset (unlock)
the apparatus in case of high temperature lock.
If the lock would be caused by lack of water
pressure alarm, the recovery will be automatic
after that the hydric pressure will be restored at the minimum operating level (0,08 MPa -
0,8 bar) by means of the operating and the closure of the charging tap placed under the
boiler (black handle). The display has several symbols, signaling in addition to operation
modes, also the various alarm or system displays:
Symbol Meaning
L
Malfunction
J
Request of burner switch-on
I
Heating request
H
Sanitary request (generic)
G
Function sanitary Comfort activated
F
Parameter menu activated
E
Anti-freeze request activated
C
Winter mode
B
Summer mode
A
OFF mode
Level of
modulation
Indicates the instantaneous power of the boiler by 0 to 100%
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