20
Subject to change without notice | 83054200iUK | ait-deutschland GmbH
30 Dismantling
DANGER
Danger of fatal injury due to electric
current!
Electrical connections may be installed
only by qualified electricians.
Before opening the unit, disconnect the
system from the power supply and secure
it from being switched back on!
WARNING
Only qualified heating or cooling system
technicians are allowed to remove the unit
from the system.
IMPORTANT
Recycle or provide for proper disposal of unit
components, refrigerants and oil in accord
-
ance with the applicable regulations, stand
-
ards and directives.
30.1 Removal of the buffer battery
IMPORTANT
Before scrapping the heating and heat pump
regulator, remove the buffer battery on the
processor board. The battery can be pushed
out using a screwdriver. Dispose of battery
and electronic components in keeping with
environmental considerations.
29
Malfunctions
In the event of a malfunction, you can detect the cause
of the malfunction via the diagnostic program of the
heating and heat pump regulator.
Operating manual of the heating and heat pump
regulator
WARNING
Service and repair work on the compo-
nents of the unit may be performed only by
customer service personnel authorized by
the manufacturer.
NOTE
If the safety temperature limiter on the
electric heating element (depending on unit
model) has tripped, no fault is displayed.
29.1 Unlock the safety temperature
limiter
A safety temperature limiter is installed in the electric
heating element (depending on unit model). If the heat
pump fails or there is air in the system:
► Check whether the reset button (
②
) of the safe
-
ty temperature limiter (
①
) has jumped out (by ap
-
prox. 2 mm).
► Press the reset button (
②
) back in again.
► If the safety temperature limiter trips again, con
-
tact the local partner of the manufacturer or the
factory‘s customer service.
