cates the "lock out" signal onto the
contr ol panel of t he contr ol box.
When this light turns on, the burn-
er can operate again only after the
reset button has been pressed; if
this has been done and a regular
ignition occurs, it means the failure
can be defined momentary and not
dangerous. On the contrary, if the
"lock out" stays, the cause of the
fault, as well as the relevant action
must be made according to the fol-
lowing chart:
The burner does not ignite
– Check the electric connections.
– Check the regular fuel flow, the
cleanness of the filters, of the nozzle
and air vent from the tube.
4
5
6
– Check the regular spark ignition and
the proper function of the burner.
The burner ignites regularly but the
flame goes out immediately
– Check the flame detection, the air
calibration and the function of the
appliance.
Difficulty in regulating the burner
and/or lack of yield
– Check: the regular flow of fuel, the
cleanness of the boiler, the non
obstruction of the smoke duct, the
real input supplied by the burner
and its cleanness (dust).
The boiler gets dirty easily
– Check the burner regulator (smoke
analysis), the fuel quantity, the flue
obstruction and the cleanness of
the air duct of the burner (dust).
The boiler does not heat up
– Control the cleanness of the shell,
the matching, the adjustment, the
burner per formances, the pre-
adjusted temperature, the correct
function and position of the regula-
tion stat.
– Make sure that the boiler is suffi-
ciently powerful for the appliance.
Smell of unburnt products
– Control the cleanness of the boiler
shell and the flue, the airtightness of
the boiler and of the flue ducts (door,
combustion chamber, smoke ducts,
3
7
1
2
Fig. 9
51