Unical .it AQ 15, User Operating Instructions Manual

Page: 10 / 16

10
Alarm signals
In the event a heat stove operation fault should
occur, the system informs the user on the type of
fault.
Inspection operations must be carried out by the
user and the Technical Support Centre must only
be contacted in case no solution is found.
Display
Top
Display
Bottom
Type of problem
Solution
ALAR
FAN FAIL
ALAR
DEP FAIL
ALAR
SIC FAIL
ALAR
SIC FAIL
ALAR PRESS
Flue gas extractor fault or block
Obstructed flue
Pellet tank overheating
Excessive water temperature
It indicates that the system pressure is
lower than 0.5 bar or higher than 2.3 bar
Contact the authorised technical support
centre
Clean the chimney or ensure there are no
obstructed grilles on flue gas exhaust outlet
Reset the pellet safety thermostat on the
rear of the stove. If the problem persists,
contact the authorised service centre.
Reset the water safety thermostat on the
rear of the stove. If the problem persists,
contact the authorised service centre.
Decrease pressure in the system
Fill the system
ALAR NO ACC
-The heat stove is unable to ignite
-It is the first ignition
Fill the tank with pellet Repeat ignition
ALAR NO FIRE
- Heat stove extinction during operation Fill tank with pellets
ALAR
SOND FUMI
The flue gas probe is broken or discon-
nected from the board
Contact the authorised technical support
centre
ALAR HOT H20
The water temperature exceeds 90 °C.
The circulation pump is blocked or the
plumbing system is discharging water
Ensure the pump is powered.
Ensure the pump impeller is not seized by
limescale
ALAR
SOND H20
The water probe is interrupted
The water probe is shorting
Ensure the water probe is not disconnected.
Contact the authorised service centre
ALAR
HOT TEMP The flue gas temperature exceeds 280°C Flue gas probe fault
Contact the authorised service centre
COOL
FIRE Power outage
When the power supply is restored, the sto-
ve performs a cooling cycle, at the end of
which it will automatically restart
SERV
It indicates that the stove has reached
1300 hours of operation. Extraordinary
maintenance must be performed
Contact the authorised service centre
The following table summarises the alarms, type
of problem and possible solution:
Electrical device faults