Installation and operating instructions profi-air 250/360 flex
80
Fault report
integrated control panel
profi-air cockpit app or wire-
less remote control fault
report
Possible cause
Control response
Flashing red LED and acoustic
signal on the ventilation unit
Flashes nine times
E9 / optional internal extract air
sensor
Optional internal extract air
sensor (humidity / VOC)
improperly connected or defec-
tive.
The unit keeps working, yet in
a fail-safe state (fail-safe mode
2) – very low fan speed.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes ten times
E10 / fresh air temperature
< –13 °C
Very cold outside temperature.
The unit is in frost protection
mode, see Section 6.4.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes eleven times
E11 / supply air temperature
< 5 °C
Supply air sensor has meas-
ured a temperature below 5 °C
– freezing danger. Fresh air
pipes improperly insulated.
The outside temperature is too
low. The building is not heated.
The unit has not been set prop-
erly (supply airflow / extract
airflow correlation).
The unit operation will be shut
down completely, since this
error type constitutes a safety
hazard.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes twelve times
E12 / fire protection tempera-
ture at one sensor
> 70 °C
A temperature sensor has
measured a critical tempera-
ture of over 70 °C. Fire hazard!
The unit operation will be shut
down completely, since this
error type constitutes a safety
hazard.
Flashing red LED and acoustic
signal (60/min) on the ventila-
tion unit
E14 / fire protection
The fire alarm connected to
the optional connection box
has been activated.
The unit operation will be shut
down and can only be reset
manually.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes 15 times
E15 / high condensate level
Bridge at the digital input
removed.
The unit operation will be shut
down completely, since this
error type might lead to water
damage.
Condensate line clogged.
Condensate pump is improperly
connected or defective.
No error indication
E8 / room air sensor
Room air sensor in the optional
wireless remote control is
defective.
The unit keeps working as
usual, however, the room tem-
perature can no longer be dis-
played on the wireless remote
control.
No error indication
E13 / communication error
The remote control has already
been connected with another
ventilation unit.
The unit keeps working as
usual, however, control com-
mands can no longer be
issued via the wireless remote
control.
Ventilation unit is disabled.
Unit is disabled.
8.2 Fault clearance
In this section, you will find support for cause determination and clearance of individual fault reports.
In the event of fault reports, you should generally reset the error first, since some errors may occur due to temporary voltage
loss. If the fault report is displayed again after a short period of time (max. 5 minutes), please follow the instructions on fault
clearance.
Generally, only original spare parts matching the type of unit must be installed.
In order to reset an error, press and hold the “Error message” button on the internal control panel or
de-energize the ventilation unit for approx. 30 seconds.
Please refer to Section 7.1 for filter replacement.
8.2.1 Fault clearance filter replacement
Summary of Contents for profi-air 250/360 flex
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