Troubleshooting; Alarm Management - Ravelli HR EVO 290 Manuel D'installation

Rev.1 16/03/2018
ENG
Pag.82

TROUBLESHOOTING

Alarm management

Alarms are indicated by an acoustic signal (if activated) and a message on the control panel.
In case of an alarm, shut down the boiler, eliminate the cause and restart the boiler according to the normal procedure described in
this manual.
Every alarm status causes immediate boiler shutdown.
The alarms, with causes and cures, which can appear on the control panel are listed below:
SEGNALAZIONE
AL 1
POWER FAILURE The boiler does not start.
Occurs in case of a fume
AL 2
temperature probe fault.
FUME PROBE
The shutdown procedure is
activated.
Occurs if the fume probe
detects a fume temperature
AL 3
above 280°C.
HOT FUMES
The shutdown procedure is
activated.
Occurs when the fume
extraction fan is faulty.
AL 4
FAN FAIL
The shutdown procedure is
activated.
No flame in ignition stage.
AL 5
NO IGNITION
The shutdown procedure is
activated.
AL 6
NO PELLETS Brazier not fed with pellets.
Occurs in case of
cutting in of the auger
AL 7 duct temperature safety
THERMAL SAF thermostat.
The system is stopped.
In the work stage the boiler
AL 8 detects a pressure below
NO NEG PRESS the vacuum switch setting
threshold. The system is
stopped.
Appears when the
AL 9
INSUFF DRAUGHT combustion air flow is below
a certain threshold.
Occurs
pressure does not come
AL E
within the values for correct
WATER PRESSURE
operation.
The system is stopped.
HR EVO 290 - 350 - 390
ANOMALIA CAUSE POSSIBILI
No power during the lighting
stage.
Probe fault.
The probe is disconnected
from the board.
Too many pellets.
Reduced heat exchange
in the system.
The fume fan is blocked.
Faulty speed control sensor.
No power to fume fan.
The pellet hopper is empty.
The heater is faulty, dirty or
not correctly positioned.
Pellet load setting incorrect.
The pellet hopper is empty.
The pellet loading gearmotor
has to adjust.
The gearmotor does not load
pellets.
The safety thermostat has
detected a temperature
above the setting threshold
due to overheating of
the bottom part of the
hopper blocking gearmotor
operation.
The combustion chamber
is dirty.
The fume duct is obstructed. Check hermetic closing of the door.
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. Check hermetic closing of the door.
The fire door is not closed.
The overpressure valves
are open-stuck.
Faulty air flow meter.
when the water
Occurs when the pressure
transducer on the water
circuit detects a pressure
below or above the fixed
limits.
use and maintenance manual
Turn the boiler OFF by pressing the button P4 and repeat
the lighting procedure.
Other reinstatement operations must be carried out by a
service centre.
Reinstatement operations must be carried out by a service
centre.
Adjust the pellet flow.
Other reinstatement operations must be carried out by a
service centre.
Reinstatement operations must be carried out by a service
centre.
Check pellets in hopper.
Check the lighting procedures.
Other reinstatement operations must be carried out by a
service centre.
Check pellets in hopper.
Adjust the pellet flow
Other reinstatement operations must be carried out by a
service centre.
Check the cause of excessive overheating.
Reset the relevant safety thermostat by pressing the reset
button.
Check cleanness of the fume duct and combustion
chamber.
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 closing of the 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.
RISOLUZIONE