FRÄNKISCHE profi-air 250/360 flex, Installation And Operating Instructions Manual

Page: 84 / 108

Installation and operating instructions profi-air 250/360 flex
84
8.2.5 Fault clearance other messages
Fault report
integrated control panel
profi-air cockpit app or wire-
less remote control fault
report
Possible cause Checkup / measure
Flashing red LED and acoustic
signal on the ventilation unit
Flashes three times
E3 / summer bypass
If the error occurs during
winter months, the air volume
balance between supply and
extract air is not correct.
Has the unit been adjusted?
Check the settings with the
help of the commissioning
report.
Check the degree of pollution
of the filters, and replace the
filters if necessary.
Summer bypass flap has
got stuck.
Examine the summer bypass
module and make the flap
movable again.
Motor of the summer bypass
flap is defective.
Replace summer bypass
motor.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes ten times
E10 / fresh air temperature
< –13 °C
Very cold outside temperature.
No defect. The unit operates
in frost protection mode. See
Section 6.4.
Wait for warmer outside
temperature.
Check the installed defroster
heater.
No defroster heater
available – install if necessary.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes eleven times
E11 / supply air temperature
< 5 °C
Fresh air pipes improperly
insulated.
Retrofit fresh air pipes with
insulating material.
The outside temperature is too
low.
Wait for warmer outside
temperature.
Check the installed defroster
heater.
No defroster heater available
– install if necessary.
The building is not heated.
Increase the room
temperatures in the building.
No or false adjustment of the
unit.
Has the unit been adjusted?
Check the log for air volume
calculation.
Flashing red LED and acoustic
signal on the ventilation unit
Flashes twelve times
E12 / fire protection tempera-
ture at one sensor > 70 °C
On-site heat sources heating
the air temperature to above
70 °C.
Check on-site heat sources
and ensure lower air
temperatures in the system.