Maico WR 310, Руководство по эксплуатации, Страница: 64 / 104

UK | 18 Faults
64
18.3 Fault messages
The tables below show potential faults and
their causes.
Column 3 “Ackn.” states whether the fault has
to be acknowledged after rectification or not.
M: Fault rectification must be acknowledged
manually . Only then is the ventilation unit
operable again.
A: Rectification of a temperature sensor
fault is detected by the control. Once rectified,
the ventilation unit continues running auto-
matically .
Collective alarm: A collective alarm is also
issued with every fault message. The collec-
tive alarm can be used via the potential-free
switching contact on the main board and, in
case of malfunction, switch on a signal lamp,
for example.
Fault /
Failure of
Message
Possible cause
Ackn.
Supply air
fan
Supply air fan fault
Break in a cable,
fan defective
M
Exhaust air
fan
Exhaust air fan
fault
Break in a cable,
fan defective
M
Communication
with main
control unit
(comfort control
unit)
Communication
with
main control unit
fault
Break in a cable;
main control unit
defective; wiring
incorrect
A
Sensor
T-outside air,
upstream of
EHE
Temperature
sensor, upstream
of EHE, fault
Break in a cable;
temperature
outside measuring
range
A
Unit
T-air inlet
sensor
Unit inlet tempera-
ture sensor fault
Break in a cable;
temperature outside
measuring range
A
Sensor
T-outgoing air
Outgoing air tem-
perature sensor
fault
Break in a cable;
temperature outside
measuring range
A
Sensor
T-supply air
Supply air temper-
ature sensor fault
Break in a cable;
temperature outside
measuring range
A
Sensor
T-room external
External room
temp. sensor fault
Break in a cable;
temperature outside
measuring range
A