Buderus Logamatic 4323 User Manual

Modules and their functions
9
Logamatic 4323 - Subject to technical modifications.
68
9.2 FM441 function module (accessory)
The FM441 module regulates one heating circuit and
one DHW heating facility.
The manual switches on the module are only provided
for service and maintenance functions.
If the manual switches are not set to automatic,
a
corresponding message is displayed on the MEC2
programming unit and the fault indicator
illuminates.
Fig. 23 FM441 function module
1 Heating circ.
2 DHW
1
2
Display General fault, e.g. on-site fault,
sensor fault, external faults,
wiring fault, internal module
fault, manual mode.
The fault messages are
displayed 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
operational
Display – L Cylinder primary pump active
Display – Z DHW circulation pump active
Display Thermal disinfection active
USER NOTE
Never use the manual switches to switch
off the system when you have to
temporarily leave the installation.
Use the holiday function for this purpose
(Æ
Chapter 7.16).

Buderus Logamatic 4323 Specifications

General

Brand	Buderus
Model	Logamatic 4323
Category	Control Unit
Language	English