12.14
ALARM ALERTS
Whenever an operating condition other than that designed for the regular operation of the boiler occurs,
there is an alarm condition.
The control panel gives information on the reason of the alarm in progress. A sound signal is not envisioned
for alarms A01-A02 only so to PANEL ALERTnot disturb the user in the event of pellets running out in the
EN
hopper during the night.
PANEL ALERT
A01
A02
A03 Thermostat
alarms
A04
A05 Pressure
switches alarm
A08
A09
A19
A20
SERVICE
12.15
ALARM RESET
To reset the alarm one must press and hold key 1 (ESC) for a few seconds. The boiler performs a check to
determine if the cause of the alarm persists or not.
In the first case the alarm will still be displayed, in the second case it will go onto OFF.
If the alarm persists, contact the service centre.
12.16
NORMAL SHUTDOWN (ON THE PANEL: OFF WITH FLASHING FLAME)
If the shutdown key is pressed or if there is an alarm signal, the boiler goes into the thermal shutdown phase
which entails the automatic execution of the following stages:
• It stops pellets loading
• The room fan (if provided) maintains the set speed until the smoke T reaches 100°C, then it automatically
sets itself at the minimum speed until it reaches the shutdown temperature
• The smoke fan sets itself at maximum speed and maintains it for a fixed time of 10 minutes, at the end
of which if the smoke T has fallen below the shutdown threshold it switches off permanently, otherwise it
sets itself at the minimum speed until it reaches such threshold before switching off.
• If the boiler was shutdown regularly but, due to thermal inertia the smoke temperature exceeds the
threshold again, the shutdown stage restarts at the minimum speed until the temperature goes down.
82
TYPE OF PROBLEM
The fire does not ignite.
The fire goes off abnormally.
The temperature of the pellets hopper
or the water temperature exceed the
envisioned safety threshold.
Smoke overheating.
Smoke pressure switch intervention or water
pressure insufficient.
Abnormal smoke fan operation.
Smoke probe faulty.
Water probe faulty.
Puffer probe alarm.
Routine maintenance alert (it does not
block the system).
SOLUTION
Check whether the brazier is clean / level of
pellets in the hopper.
Check the level of pellets in the hopper.
Wait for the cooling stage to end, cancel the
alarm and restart the boiler setting the fuel
loading at minimum (SETTINGS menu - Pellets
recipe). If the alarm persists, contact the service
centre. Check if the room fan works properly (if
present).
The set smoke threshold has been exceeded.
Reduce pellets loading (SETTINGS menu - Pellets
recipe).
Verify chimney obstruction / door opening or
hydraulic system pressure.
If the alarm persists, contact the service centre.
If the alarm persists, contact the service centre.
Water probe disconnected / interrupted /
defective / not recognised.
Puffer probe disconnected / interrupted /
defective / not recognised.
When this flashing message appears upon start-
up, it means that the preset operating hours
have elapsed before maintenance. Contact the
service centre.
AQUOS - IDRON