40
15.6 COMMUNICATION LOSS
Controlling panel is connected to remaining
electronics by digital communication joint
RS485. In case of damage of this wire on the
screen following information will be
displayed: Attention! Lack of communication
The controller does not deactivate regulation
and operates normally with previously
programmed parameters. In case of alarm
situation it will undertake action accordingly
to given alarm.
It is necessary to check the wire connecting
controlling panel with given alarm, then
mend it or replace it if necessary.
15.7 FAN DAMAGE
Alarm occurs when damage to the speed
sensor or the fan on the basis of the load
voltage at the output of the fan control. The
controller turns off the fan.
15.8 MIN. OR MAX. VACUUM EXCEEDING
Alarm occurs when exceeding the threshold
min. or max. the vacuum in the combustion
chamber is enabled to use the vacuum
sensor.
15.9 FIRING UP FAILED ATTEMPT
Alarm will appear after third failed attempt of
automatic furnace firing up. In case of alarm
all pumps are deactivated in order to not
cause excessive cooling of the boiler.
Deleting is done by pressing TOUCH and
PLAY button or by activating or deactivating
the controller. The cause of these alarms can
be broken igniter or lack of fuel in the silo.
16. OTHER
17.1 POWER STOPPAGE
In case of power stoppage the controller
returns to operation mode in which it was
before stoppage.
17.2 ANTIFREEZING PROTECTION
When temperature of the boiler decreases
below 5 degrees C CH pump will be activated
enforcing circulation of boiler water. It will
delay the process of freezing water, however
in case of very low temperatures or by lack
of electrical power it may not protect the
installation against freezing.
17.3 PUMP ANTI STANDSTILL FUNCTION
The controller does the function of CH, HUW
and Mixer pumps protection against getting
stale.
17.3 NETWORK FUSE REPLACEMENT
Circuit fuse is positioned inside the
controller’s cover. The fuse can only be
replaced by a person holding proper
qualifications and after disconnecting
electrical power. Porcelain fuses 5x20mm
and time-lag fuses with nominal current 6,3A
should be used. In order to take out the fuse
unscrew the fuse cover and remove the fuse.
17.4 CONTROL PANEL REPLACEMENT
It is not recommended to replace the panel
itself as the program in panel must be
compatible with program in other part of the
controller.
17. LAMBDA SENSOR Λ
Burner efficiency can be increased by
connecting additional lambda sensor module.
Connect the module according to point 12.6.
Lambda sensor is to be activated in: Menu
→ Service settings → Burner settings –
Lambda sensor
If parameter Operation with Lambda sensor
is set on “ON” then the controller will operate
using lambda sensor readings. The amount
of air provided to the furnace will be
automatically set in such a way to obtain
preset amount of air in fumes. If this
parameter is set on “OFF” then Lambda
Sensor readings will not have influence on
controller’s operation. Amounts of air for
given burner power are set in:
Boiler settings → Power modulation
Description of remaining parameters related
to Lambda sensor: Parameter Blow-in output
scope sets permissible scope of variability of
airflow power by work using lambda sensor.
Parameters Dynamics and Reaction time
have influence on regulation time of air
amount in fumes to preset amount and on
stability of air in fumes. It is not
recommended to change these parameters if
regulation time and stability of keeping
preset amount of air on required level.
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