62
Zehnder Eversky
21.7. List and meaning of alarms
No.
Display
Class
Time
Threshold
Action
Conditions
Causes
(There may be several causes)
36 to
46 ... in Manual mode
C
5s
Doesn’t stop
Some functions have
been switched to manual
mode, see details below.
In the Manual/Auto menu, everything
must be in Auto.
36
Manual blowing
ctrl
C
5s
Doesn’t stop
The supply air
temperature control is in
manual mode.
In the Manual/Auto menu, supply temp
ctrol must be set to Auto.
38 VAS at var. freq. in
manual mode
C
5s
Doesn’t stop
The AO4 output for the
control of the VAS supply
air fan is in manual mode.
The alarm is self-
acknowledged when the
output returns to
automatic mode.
In the Manual/Auto menu, VAS must be
set to Auto.
40 VAR at var. freq. in
manual mode
C
5s
Doesn’t stop
The AO5 output for the
control of the VAR return
fan is in manual mode.
The alarm is self-
acknowledged when the
output returns to
automatic mode.
In the Manual/Auto menu, VAR must be
set to Auto.
41 Heating in manual
mode
C
5s
Doesn’t stop
The AO1 output for
controlling the 3-way
valve of the hot water
heating coil is in manual
mode.
The alarm is self-
acknowledged when the
output returns to
automatic mode.
In the Manual/Auto menu, Heating must
be set to Auto.
42 Heat exchanger in
manual mode
C
5s
Doesn’t stop
The AO2 output for the
control of the recovery
unit bypass actuator is in
manual mode.
The alarm is self-
acknowledged when the
output returns to
automatic mode.
In the Manual/Auto menu, Exchanger
must be set to Auto.
43 Cooling in manual
mode
C
5s
Doesn’t stop
The AO3 output for
controlling the 3-way
valve of the cooling coil
is in manual mode.
The alarm is self-
acknowledged when the
output returns to
automatic mode.
In the Manual/Auto menu, Cooling must
be set to Auto.
44 P1-hot in manual
mode
C
5s
Doesn’t stop
The DO3 output for
controlling the pump of
the hot water heating coil
is in manual mode.
The alarm is self-
acknowledged when the
output returns to
automatic mode.
In the Manual/Auto menu, P1-Hot must
be set to Auto.
