Operation in the event of a fault
11
Logamatic 4323 - Subject to technical modifications.
76
Manual mode FM441 and FM442 function modules
(accessories)
As described on page 75 for the central module, you
may also set the manual switches for DHW and/or
heating circuits of these modules temporarily to
3
manual, should there be a fault.
For DHW observe the following: Before manually
operating the primary pump on systems with external
heat sources, ensure that the heat source can deliver
sufficient heat, otherwise the DHW cylinder may cool
down.
Manual mode FM456 and FM457 function modules
(accessories)
In case of a fault, you can switch off the heating circuit
pump by setting the manual switch to
3, i.e. manual.
The boiler is switched to emergency mode, as described
in the technical boiler documentation.
WARNING!
RISK OF SCALDING
from hot water!
z If water which is too hot is supplied by
the primary pump to the DHW cylinder,
never draw off DHW at the draw-off
points without mixing in cold water.
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