20142714
22
Faults - Possible causes - Solutions
4.2 Operating faults
Tab. J
Fault Possible Causes Solution
The burner locks out during op-
eration.
Earth probe. Check the right position and if necessary set it ac-
cording to the instructions of this manual.
Clean or replace the ionisation probe.
The flame disappears 4 times. Check the gas pressure in the network and/or ad-
just the solenoid valve according to the instruc-
tions of this manual.
Air pressure switch opening. The air pressure is too low, (the head is bad adjust-
ed).
The air pressure switch is defective: change it.
The burner tends to lose the
flame in the passage from the
1st to 2nd stage.
Burner output ratio between the 1st and 2nd
greater than 1:2.
Restore the correct maximum ratio of 1:2 checking
that the burner output of the 1st stage is not less
than the minimum of the firing rate.
High air excess in 1st stage. Restore the correct air excess value (l min. = 1.3)
see paragraph “4.4 combustion control”.
Burner shut down. Gas pressure switch opening. Check the pressure in the network and/or adjust
the solenoid valve according to the instructions of
this manual.
To Next Page
Loading...
