Cola DOMUSFIRE C17 Installations-, Bedienungs- Und Wartungsanleitung Seite 65

Signalling
-In the work stage the boiler
AL 8
detects a pressure below the
NO NEG
vacuum switch setting threshold.
PRESS
-The system is stopped.
AL 9
-Appears when the combustion
INSUFF
air flow is below a certain
threshold.
DRAUGHT
-Occurs when the water pressure
AL E
does not come within the values
WATER
for correct operation.
PRESSURE
-The system is stopped.
-Occurs in case of cutting in
AL A
heating chamber water
SAFETY
temperature safety thermostat.
H O
2
-The system is stopped.
-Occurs when the gearmotor
AL b
works continuously and for more
AUG TRIAC
than 60 sec.
ERROR
-The system is stopped.
-Occurs in case of water T
detection probe
Al c
fault,
WATER
displaying T H2O = 0 °C.
PROBE
- The shutdown procedure
is activated.
-Occurs when the water
AL d
temperature has exceeded the
HOT
fixed limits.
WATER
-The system is stopped.
-Occurs on relighting the boiler
AWAITING
immediately after having shut it
COOL
down.
AIRFLOW
-Occurs when the air flow meter is
METER
disconnected.
FAILURE
-Occurs when the water
FROST RISK
temperature falls below a certain
value.
-Occurs when the boiler has
exceeded 1800 hours of
SERVICE
operation since the previous
DUE servicing.
The Manufacturer reserves the right to make technical or aesthetic changes to the products at any time without notice.
The drawings, measurements, diagrams and any other configurations are given only by way of example.
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Fault
-The combustion chamber is dirty.
-The fume duct is obstructed.
-The fire door is not closed.
-The overpressure valves are
open-stuck.
-Faulty vacuum switch.
-The combustion chamber is dirty.
-The fume duct is obstructed.
-The fire door is not closed.
-The overpressure valves are
open-stuck.
-Faulty air flow meter.
-Occurs when the pressure
transducer on the water circuit
detects a pressure below or
above the fixed limits.
-The
detected a temperature above
the setting threshold due to
overheating
chamber
gearmotor operation.
-The controller detects a faulty
gearmotor control relay (contacts
stuck).
-Faulty probe
-The probe is disconnected from
the board.
-Occurs when the temperature
probe in the heating chamber
detects a value above 92°C.
-Reset attempt in shutdown stage
with boiler hot in cooling stage.
-The controller does not detect
the amount of combustion air
and does not shut down the
boiler; it only excludes the air
flow meter functions.
-The boiler controller detects the
water temperature below 6°C
and displays a message.
-Extraordinary
notice.
65
Possible causes
safety thermostat has
of the heating
water blocking
maintenance
Cures
-Check cleanness of the fume
duct and combustion chamber.
-Check hermetic closing of the
door.
-Check closing of the
overpressure valves.
-Other reinstatement operations
must be carried out by a service
centre.
-Check cleanness of the fume
duct and combustion chamber.
-Check hermetic closing of the
door.
-Check closing of
overpressure valves.
-Other reinstatement operations
must be carried out by a service
centre.
-Check the cause of the problem,
restoring the circuit pressure by
bringing it to the normal operating
value.
-Check the cause of excessive
overheating.
-Reset the relevant safety
thermostat by pressing the reset
button.
-Reinstatement operations must
be carried out by a service centre.
-Reinstatement operations must
be carried out by a service centre.
-Check the cause of the problem,
restoring the temperature by
bringing it to the normal operating
value.
-Alarm reset is possible only after
shutdown.
-Reinstatement operations must
be carried out by a service
centre.
-The pump starts in order to move
the water inside the heating
circuit.
- Monitor the water temperature
so that it does not fall below 0°C.
- Cleaning - extraordinary
maintenance and reinstatement
operations must be carried out by
an authorised service centre.
DOMUSFIRE C17-C24
the