Lignum NG
38
15
ALARM CODES
The
Lignum NG
boiler has an electronic control able to detect overheating or lack of fuel in the boiler.
When the electronic control detects an operating error, this is indicated by an alarm code on the
display. The table below shows a list of the alarm codes that may appear:
CODE
ALARM
CAUSE / ACTION
AL1
Lack of fuel alarm
When the fuel runs out, this message appears on the screen.
It does not emit an acoustic signal.
AL2
Damage to the boiler
sensor alarm
This alarm occurs when the boiler temperature sensor does not function
properly or after it has exceeded its measuring range. The alarm activates
the heating pump and an acoustic signal.
The alarm is deactivated once the temperature returns to its measurement
range and after the general switch on the controller is turned off and on.
The Technical Support Service must be called to check and replace the
sensor.
AL3
Boiler overheating
alarm
This alarm occurs when the boiler temperature exceeds 90ºC. If this
happens, the fan switches off and the pumps are activated. In addition, an
acoustic signal is emitted.
When the boiler temperature drops, the regulator which controls the boiler
will operate normally.
AL4
Fume temperature
sensor alarm
This alarm occurs when the electronic control detects a failure in the fume
temperature sensor.
Maximum fume
temperature overrun
The regulator warns the user that the fume temperature is too high when it
exceeds 450ºC. This temperature can be reached if the housing door is left
open or due to a malfunction of the fume temperature sensor.
The alarm is displayed visually and emits a short, acoustic signal.
Safety thermostat
alarm
When the boiler temperature exceeds 100ºC, the safety thermostat (manual
reset) deactivates the fan and the red light on the control panel turns on.
Summary of Contents for LIGNUM NG 20
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