Ravelli HR EVO 250 Installations-, Bedienungs- Und Wartungsanleitung Seite 82

Rev.1 16/03/2018
ENG
Pag.82
Occurs in case of cutting
in
water
AL A
SAFETY H2O
thermostat.
The system is stopped.
Occurs when the gearmotor
AL B
works continuously and for
AUG TRIAC ERROR
more than 60 sec.
The system is stopped.
Occurs in case of water
T detection
Al C
displaying T H2O = 0 °C.
WATER PROBE S1
The shutdown procedure
Occurs
AL D
temperature has exceeded
HOT
WATER S1 the fixed limits.
The system is stopped.
Occurs in case of water
T detection probe fault,
AL F
displaying T H2O = 0 °C.
WATER PROBE S2
The shutdown procedure is
activated.
Occurs
AL G
temperature has exceeded
HOT
WATER S2 the fixed limits.
The system is stopped.
Occurs in case of water T
detection probe fault,
AL I
displaying T H2O = 0 °C.
WATER PROBE S3
The shutdown procedure
is activated
In the work stage the boiler
detects a opening the fire
AL M
door- ash door
DOOR OPEN
The system is stopped.
Occurs in case of water T
AL H
detection probe fault,
HOT
ACQUA S3 displaying T H2O = 0 °C.
The system is stopped.
Occurs on relighting the
AWAITING COOL boiler immediately after
having shut it down.
AIRFLOW METER
Occurs when the air flow
FAILURE
meter is disconnected.
Occurs when the water
FROST RISK temperature falls below a
certain value.
Occurs when the boiler has
SERVICE
exceeded 1800 hours of
DUE
operation or 2000 Kg pellet
since the previous servicing.
HR EVO 170 - 250
The safety thermostat has
heating chamber detected a temperature
temperature safety above the setting threshold
due to overheating of
the heating chamber
water blocking gearmotor
operation.
The controller detects a
faulty gearmotor control
relay (contacts stuck).
probe fault,
Faulty probe
The probe is disconnected
from the board.
when the water
Occurs when the
temperature probe in the
heating chamber detects a
value above 92°C.
Faulty probe
The probe is disconnected
from the board.
when the water
Occurs when the
temperature probe in the
heating chamber detects a
value above 92°C.
Faulty probe
The probe is disconnected
from the board.
The fire door is not closed.
The ash door is not closed.
Defective switch.
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 maintenance
notice.
use and maintenance manual
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.
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.
Reinstatement operations must be carried out by a service
centre.
Check hermetic closing of the fire door or ash door.
Other 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.