Buderus Logamatic 4323 Service Instructions

Modules and their functions
5
Logamatic 4323 - Subject to technical modifications.18
5.4 FM441 function module (accessory)
The FM441 module regulates one heating circuit
and
one DHW heating facility.
The switches on the module only have service and
maintenance functions and only affect 230 V outputs.
Only fit this module into the control unit once.
If the switches are not set to automatic, a corresponding
message appears on the MEC2 programming unit, and
the
fault indicator illuminates.
The control functions remain operational in manual
mode.
Fig. 12 FM441
Display General fault, e.g. on-site fault, sensor
fault, external fault, wiring fault,
internal module fault, manual mode.
Fault messages appear as plain text
on the MEC2 programming unit.
LEDs for the following functions:
Display "Mixer opens" (hotter)
Display "Mixer closes" (colder)
Display Heating circuit in summer mode
Display DHW in night mode below the
set temperature.
Display Heating circuit pump active
Display - L Cylinder primary pump active
Display - Z DHW circulation pump active
Display Thermal disinfection active
USER INFORMATION
Never use the switches to shut down the
heating system during temporary absence.
Use the holiday function for this purpose
(
Æ operating instructions of the Logamatic
4323 control unit).

Buderus Logamatic 4323 Specifications

General

Brand	Buderus
Model	Logamatic 4323
Category	Control Unit
Language	English