UK | 18 Faults
66
18.4 Information
The latest information is displayed
along with the time and date.
Note
Description
Furnace pressure
monitor triggered
The furnace safety
pressure monitor
was tripped by an
impermissible partial
vacuum.
The unit switches off.
Switching test
active
A switching test is
being performed.
Forced operation
active
Cyclic forced operation
active. Any pumps and
servomotors present
are activated briefly to
avoid them seizing up.
Frost protection
volumetric flow-
reduction
The heating output of
the PTC heat regis-
ter is too low for the
current volumetric flow
and/or current outside
temperature.
The volumetric flow is
therefore reduced to
achieve the minimum
air inlet temperature
needed for frost pro-
tection.
Max. humidity value
limit exceeded
The set max. humidity
value limit
was exceeded, excess
humidity protection
(increase in volumetric
flow) is active.
Volumetric flow
measurement active
Fans are operated in
nominal ventilation
ventilation level for a
maximum of 3 hours.
Brine EHE,
low cooling
capacity
The cooling capacity
of the brine EHE is too
low. There is no cool-
ing effect
pump is
blocked for one hour.
Note
Description
Communication
EnOcean
There is no commu-
nication between the
EnOcean plug-in mod-
ule and basic circuit
board.
Communication
KNX
There is no commu-
nication between the
KNX plug-in module
and basic circuit
board.
Communication
internet
There is no com-
munication with the
internet.
Communication
ModBus
There is no communi-
cation
with the ModBus
components.
External safety
shutdown
A connected external
safety contact has
tripped (terminal X2).
There is no bridge
on the control circuit
board.
The unit switches off!
