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3062878_201707
14. Fault messages
AlarmsaresignalledbytheredLEDashing.Pressingthekeydisplaysthealarminplaintext;pressingthekeyon
the alarm display again acknowledges remedied alarms. If several alarms are active, this is indicated by a symbol
in the top r.h. corner. Further alarms can be called up by means of the scroll keys.
Fault, inverter, ventilation
fan (AL01)
The system shuts
down
Fault recognition
through FU; FU faulty
Check inverter; acknowledge
fault message
Motor temperature too high,
ventilation fan (AL02)
The system shuts
down
Fan motor temperature
too high
Allow the motor to cool down until
the cold conductor temperature
has returned into the permissible
range; check the power drawn
by the supply air fan; if the
fault repeats, check the motor,
bearing and fan. Acknowledge
fault messages
Isolator switch, ventilation
fan (AL03)
The system shuts
down
Isolator switch of supply
air fan switched off
Switch on supply air fan isolator
switch; acknowledge fault
message
Airowmonitor,supplyair
(AL04)
The system shuts
down
Supply air V-belt torn;
barometric cell or lead
to barometric cell faulty
- Air damper closed
Replace drive belt; check
barometric cell or lead;
acknowledge fault message
Check the actuators of the air
damper
Fault, inverter, extract fan
(AL05)
The system shuts
down
Fault recognition
through FU; FU faulty
Check inverter; acknowledge
fault message
Motor temperature too high,
extract fan (AL06)
The system shuts
down
Fan motor temperature
too high
Allow the motor to cool down until
the cold conductor temperature
has returned into the permissible
range; check the power drawn
by the supply air fan; if the
fault repeats, check the motor,
bearing and fan. Acknowledge
fault messages
Isolator switch, extract fan
(AL07)
The system shuts
down
Isolator switch of extract
air fan has switched off
Switch on isolator switch of
extract air fan, acknowledge fault
message
Airowmonitor,extractair
(AL08)
The system shuts
down
Extract air fan belt torn;
barometric cell or lead
to barometric cell faulty
- Air damper closed
Replace drive belt; check
barometric cell or lead;
acknowledge fault message
Check the actuators of the air
damper
Outdoorairlter
contaminated (AL09)
Display only Theoutdoorairlterhas
exceeded its limit
Cleanorreplacelterelement
Supplyairlter
contaminated (AL10)
Display only Thesupplyairlterhas
exceeded its limit
Cleanorreplacelterelement
Extractairlter
contaminated (AL11)
Display only Theextractairlterhas
exceeded its limit
Cleanorreplacelterelement
Pump fault, DHW bank
(AL12)
The system shuts
down
An overload relay of an
external heating circuit
pump has responded
Reset overload relay; check
power drawn by the pump,
acknowledge fault message