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9.5. Control unit
The microprocessor control unit ensures safe,
automatic operation of the pellet stove. The control
unit controls the interaction of the components e.g.
induced draught fan, screw conveyor motor, flame
temperature sensor, room temperature sensor etc..
The pellet stove’s electrical fuses are incorporated
into the control unit.
To change these fuses you must remove the left
side wall.
Figure 14:
1. Control unit
2. Fuses T 3,15A
3. Fuse T 0,315A
4. Backup battery
9.6. Operator console
The operator console is built into the pellet tank in
such a way that the display with its four function keys
is easily accessible.
All the parameters necessary for the operation of the
stove can be set with this operator console.
Access to these parameters is divided into two levels.
The first level is intended for the stove operator.
The second level is intended for customer service and
may only be accessed by inputting a special access
code.
Description of the first level
– the one for the operator:
The operator can make the following adjustments with
or read the following information on the display of the
operator console:
Start or stop the device
Set the desired target room temperature (in
“Heating” operating mode).
Select “Heating” or “Auto” operating mode
Set up a weekly programme with the desired
target room temperature and the associated
switch on and off times in “Auto” operating
mode
Read off the relevant operating mode and the
relevant operating status which the device is
currently in and the date and time
Read every error message shown as text and
number
Make the selection of language for the menu
on the operator console.
Figure 15: Operator console
9.6..1 Backlighting
The backlighting of the display is switched off 5
minutes after the operator console was last operated.
9.6..2 Activating the backlighting
The backlighting is switched on by pressing any key.
It is only after the backlighting is activated that the
function keys are active.
The backlighting is also activated by any error
message generated.
9.7. Induced draught fan with rotation speed
feedback
The induced draught fan generates low pressure in
the combustion chamber and thereby supplies the
required volume of air for combustion to the
combustion chamber or through the combustion pot.
The induced draught fan is equipped with rotation
speed feedback. This permits detection of any
difference between the target and actual operating
status and countermeasures to be taken or, in the
case of greater differences, permits the stove to be
shut down (safety shutdown).
9.8. Flame or combustion chamber temperature
sensor (combustion chamber thermosensor)
The flame temperature is measured in “Heating
mode” operating mode.
The flame temperature measured is an indicator of
the energy level in the grate and hence the basis of
the air volume required for the combustion of the
energy level located in the grate.
