INSTALLATION
Disposal
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ENGLISH
xxx Fault Effect Remedy
202
No RTC
pulse
Time-dependent program
sequences are disrupted.
Isolate the appliance from the
power supply. Replace the elec-
tronic assembly.
203
Sensor volt-
age too low
The unit controls the fans
with the maximum value
of the currently selected
fan stage. The appliance
cannot provide humidity
protection. Automatic
bypass mode is not possi-
ble. Bypass mode can be
manually enabled with
the options "Disabled"
and "Bypass/window
contact" in the parameter
"Operating mode heat
recovery bypass".
Isolate the appliance from the
power supply. Check the sensor
voltage after disconnecting one
of the following sensor plugs:
X15, X16, X23, X24. Replace the
sensor. Replace the electronic
assembly.
204
Supply air
shutdown
If the supply air temper-
ature drops below 5°C,
the fan is switched off.
Check the preheating coil.
205
Maximum
outdoor air
temperature
exceeded
The high limit safety cut-
out may respond.
Isolate the appliance from the
power supply. Check the triac
for continuity. Check the sensor
cable.
—
Program-
ming unit
does not
start.
Parameters cannot be
adjusted.
I
2
C-connection faulty: Check cable
and plug-in connections. Replace
damaged cable.
—
Set time
programs
have been
deleted.
If the programming unit
is replaced, the time pro-
grams are deleted.
Set the time programs again.
If fault 16 appears, faults 101 and 102 will also be displayed in
the fault memory.
16. Disposal
Dismantling
WARNING Electrocution
Disconnect the appliance from the power supply.
The following tools are required for disassembly and material
separation prior to disposal:
- Personal protective equipment
- Set of screwdrivers
- Set of spanners
- Combi pliers
- Stanley knife
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