Operation in the event of a fault
12
Logamatic 4321/4322 - Technical specifications are subject to change without prior notice.
76
Tab. 5
Settings for an emergency operation
Disconnect heating zone mixing valve manually and set
to "Open" or "Closed" (lock to prevent movement) to
reach the desired room temperature. The heating zone
mixing valve must not be completely closed, otherwise
the DHW in the heating system may freeze.
In case of fault inform the heating contractor
immediately. He will guarantee professional service. It is
helpful for the contractor if you can provide detailed
information about the fault.
Fault
Settings for an emergency operation
ON/OFF switch
on
Logamatic 4321
Switch
Manual mode
boiler zone
ZM434 module
Switch
DHW manual
mode
Module FM441
Boiler water
thermostat
on the
Logamatic 4321
Manual mode
switch
heating zone
FM441/FM442
module
Room heating failure
Heating zones failure
R
AUT
AUT
140 °F – 194 °F
(60 °C – 90 °C)
3
DHW failure
Heating zones operating normally
R
AUT
3
140 °F (60 °C)
AUT
Boiler operation failure
R
3
AUT
194 °F (90 °C)
AUT