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Settings
P3 = 3 : Bypass subject to extract air temperature
For the bypass to be activated, the following condition must apply
for 60 minutes: Extract air temp. > Set room temperature + P27
This delayed enabling prevents cooling down in spring and au-
tumn.
If all the following conditions are met, the appliance switches to
bypass mode.
- Outdoor air temperature < Extract air temp. - P26
- Extract air temp. > Set room temperature
If one of the following conditions is met, the appliance terminates
bypass mode.
- Outdoor air temperature < P25
- Outdoor air temperature > Extract air temp. - P26
- Extract air temp. < Set room temperature
„P4: Reset filter
f Set this parameter to 1 after changing the filters. The appli-
ance resets the filter runtime to 0. This parameter is auto-
matically reset to 0.
„P28 : Enable fan
You can switch off the fans at any time via the programming unit
menu, e.g. to deactivate ventilation if there is a fire.
Effect
OFF The fans are deactivated. "OFF" and the fan icon flash on the display.
On The fans are enabled.
„P80: Day
1
Monday
2
Tuesday
3
Wednesday
4
Thursday
5
Friday
6
Saturday
7
Sunday
„P83: Mode of backlighting
Effect
On
Backlighting switched on
OFF
Backlighting switched off
Auto If no user action occurs within the time selected in the illumination
duration parameter, the display backlighting switches off and the
standard display appears.
„P84: Illumination duration
If no user action occurs within the time selected in the illumination
duration parameter, the display backlighting switches off and the
standard display appears.
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„P85: Lower standard display
Use this parameter to define what is displayed in the lower section
of the standard display. If the appliance detects a fault, the fault is
indicated in the lower section of the standard display.
4.5.2 Actual values
Display Description
„
I1
Bypass damper status
„
I2
Extract air temp.
„
I3
Relative humidity of extract air
„
I4
Filter service life
„
I5
Appliance software version
„
I6
Unit software patch
„
I7
Terminal device serial number
„
I8
Programming unit software version
„
I70-79
Fault memory
Faults detected by the appliance are stored in actual values I70 to
I79. The latest fault is stored in I70; the oldest in I79. If no faults
are entered, dashes are shown. The latest fault is also shown in
the lower section of the standard display. Possible faults are listed
for qualified contractors in the "Troubleshooting" chapter.
4.5.3 Programs
„Pro
The appliance offers the option to set 21 time programs. Switch
between the time programs using the Touch-Wheel. Press the "OK"
button to switch to setting a time program.
Time pro-
x.1
gram x
Day or group of
days
…
„
1
…
„
2
…
„
3
…
„
4
…
„
5
…
„
6
…
„
7
…
„
8
…
„
9
…
„
10
…
„
11
…
„
12
…
„
13
…
„
14
…
„
15
…
„
16
…
„
17
…
„
18
…
„
19
…
„
20
…
„
21
Setting a time program begins with selecting a day of the week or
a group of days. Press "OK". Set the day using the Touch-Wheel.
Confirm with the "OK" button.
Unit
°C
%
h
x.2
x.3
x.4
fan stage
Start time Stop time
VRC-W 400 (E) |
7
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