Ravelli HR EVO 200 SMART, Use And Maintenance Manual

Page: 166 / 357

Use and maintenance manual HR EVO Smart
Pag.49
Rev.1 08/09/2021
EN
Various signals
SIGNAL ANOMALY POSSIBLE CAUSES SOLUTION
AWAITING COOL
Occurs on relighting the
boiler immediately after
having shut it down.
Reset attempt in shutdown stage with
boiler hot in cooling stage.
Alarm reset is possible only after shut-
down.
AIRFLOW
METER FAILURE
Occurs when the air flow
meter is disconnected.
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.
Reinstatement operations must be
carried out by a service centre.
FROST RISK
Occurs when the water
temperature falls below a
certain value.
The boiler controller detects the water
temperature below 6°C and displays a
message.
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.
SERVICE DUE
Occurs when the boiler
has exceeded 1800
hours of operation or
2000 Kg pellet since the
previous servicing.
Extraordinary maintenance notice.
Cleaning - extraordinary maintenance
and reinstatement operations must be
carried out by an authorised service
centre.
MODULA F
The flue gas or flame
temperature has
exceeded the maximum
set value.
Too many pellets.
Adjust the pellet flow.
Other reinstatement operations must be
carried out by a service centre.
Reduced heat exchange
in the system.