Plum ecoMAX920P1-S TOUCH, Installation And Operating Manual, Page: 43 / 48

43
Connect the model according to electrical
scheme. Probe should be enabled in the
menu:
Service settings
→
Burner settings
→
Lambda probe
→
Operation with Lambda
probe
If Operation with Lambda probe parameter is
set to On, then the controller will operate
using indications from Lambda probe. The
amount of air provided to the furnace will be
automatically adjusted to achieve preset
oxygen content in exhausts. If this
parameter is set to Off then Lambda probe
indications will not affect the controller’s
operation.
Preset oxygen values for
individual burner powers are entered in the
parameters: Maximum, Medium, Minimum
oxygen power. Airflow correction range
parameter determines the permissible range
of airflow power variation when operating
using Lambda probe. It may be necessary to
periodically
calibrate Lambda probe
indications. To calibrate the probe it is
necessary to completely burn off the furnace
in boiler. To start calibration enter:
Boiler
settings
→
Lambda probe
calibration
Calibration takes approximately 8 mins
19 Replacement of parts and
components
When ordering spare parts and components
provide necessary information read from
nameplates. In case of the controller it is
essential to know its serial number. If the
serial number is unknown provide its model,
design and year of production.
Controller’s serial number is placed
on the nameplate of each executive
module.
19.1 Replacement of control panel
When replacing the whole control panel,
check compatibility of the new panel
software with the executive module software.
Compatibility is maintained if the first
number of software in the control panel and
in the executive module is identical. In the
example below, the software versions are
compatible, as the first number ,,01” is the
same for both subassemblies.
Examples of software numbers:
Control panel Executive module
01.xx.xxx. 01.xx.xxx.xx
The software numbers can be read
on the rating plates of the
subassemblies or in the menu
Information.
19.2 Replacement of module controller
The requirements are the same as those for
replacement of the control panel.
19.3 Mains fuse replacement
Mains fuse is located under the housing
cover, near mains terminals and protects the
controller and the devices supplied by it.
Porcelain fuses 5x20 mm and time-lag fuses
with nominal current 6.3 A/ 230 VAC should
be used.
In order to remove the fuse lift the fuse
holder with a flat screwdriver and pull out
the fuse.