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EASY CRONO HR
61
Signalling Fault Possible causes Cures
AL 8
NO NEG
PRESS
-In the work stage the stove
detects a pressure below the
vacuum switch setting
threshold.
-The system is stopped.
-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.
-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.
AL 9
INSUFF
DRAUGHT
-Appears when the
combustion air flow is below a
certain threshold.
-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.
-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.
AL b
AUG TRIAC
ERROR
-Occurs when the gearmotor
works continuously and for
more than 60 sec.
-The system is stopped.
-The controller detects a faulty
gearmotor control relay
(contacts stuck).
-Reinstatement operations
must be carried out by a
service centre.
WAITING
COOL
-Occurs on relighting the stove
immediately after having shut
it down.
-Reset attempt in shutdown
stage with stove hot in cooling
stage.
-Alarm reset is possible only
after shutdown.
AIR FLOW
METER
FAILURE
-Occurs when the air flow
meter is disconnected.
-The controller does not detect
the quantity of combustion air
and does not shut down the
stove; it only excludes the air
flow meter functions.
-Reinstatement operations
must be carried out by a
service centre.
SERVICE
DUE
-Occurs when the stove has
exceeded 1800 hours of
operation since the previous
servicing.
-Extraordinary maintenance
notice.
- Cleaning - extraordinary
maintenance and
reinstatement operations must
be carried out by a authorised
service centre.
"direzione e coordinamento della Ferroli spa"
The Manufacturer reserves the right to make technical or aesthetic changes to the produ
cts at any time without notice.
The drawings, measurements, diagrams and any other configurations are given only by way of example.
61


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