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When room temperature drops
below 10°C the unit will stop in
order to protect the house from
further cooling down. The function
is useful when the house is not
occupied and the main heating has
stopped.
Heat up the house and
reset the alarm
Parts of the programming are lost
and can be caused by a longer
period of power failure or lightning.
The unit will keep on operating on
standard programming.
Reset alarm
Re-programme the week
programme.
Contact service if the unit
does not operate as be-
fore. Supplementary
programs can be lost.
Only service can access
the supplementary pro-
grams and menus.
The filter guard is set to give alarm
when a pre-set period of time has
occurred
Clean /replace filter and
reset alarm
Occurs if power has been cut off for
a longer period of time
The week programme
should be checked and
adjusted if necessary.
Reset alarm.
The pre-set temperature of the inlet
air cannot be reached
Set a lower air inlet tem-
perature and reset alarm.
One of the temperature sensor of
the device is shorted or defec-
tive.Tx = +99 °C
Please note which sensor
T x, there is shorted, and
contact the customer ser-
vice.
One of the temperature sensor of
the device is disconnected or defect
Tx= -40 ° C
Please note which sensor
T x, there is interruped,
and contact the customer
service.
The maximum defrosting time for
the counter flow heat exchanger
has been exceeded. This could be
due to the fact that the system has
been exposed to very low tempera-
tures.
Contact our after sales
department if resetting the
alarm does not help.
If possible, inform the after
sales department of the
current working tempera-
ture from the menu VIS
DATA (SHOW DATA).
Abnormally low evaporator temper-
ature
Error by writing or input of the elec-
trician’s adjustments
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