2126
12
GB
OPERATING FAULTS
Lock-out due to :
– flame failure.
(
)
Stop due to
:
– pressure switch opening.
– valve closure and continuous pre-purging due to the pressure switch opening.
(
)
FALSE FLAME
It can happen that a flame is seen when, in reality, it’s not there due to a malfunction of the cell or of
the flame detection circuit. In this case a lock-out takes place, either when the thermostat opens at the
end of the cycle or when it closes at start-up or at any moment during pre-purging.
In the event of a burner lockout, more than two consecutive burner reset operations could
cause damage to the installation.
On the third lockout, contact the Aftersales Service.
If further lockouts or burner faults occur, interventions must only be made by qualified, au-
thorised personnel (as indicated in this manual, and in compliance with the laws and regu-
lations currently in force).
WARNING
DANGER
