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Installation instructions for qualified personnel
Important points prior to
installation
Transport the unit in its original
packaging as close as possible
to the installation location.
This avoids transportation
damage.
Check that the packaged
contents are complete and
inspect the unit for any visible
signs of transportation damage.
Notify any deficiencies to
the contractual partner and
forwarding agent.
Lift the unit by its corners
and not the refrigerant or
condensation connections.
Insulate the refrigerant pipes
(injection and suction pipe),
valves and connections to make
them tight against vapour
diffusion. If necessary, also
insulate the condensation pipe.
Select an installation location
which allows air to freely
flow through the inlet and
outlet. (see section "Minimum
clearances").
Do not install the unit
adjacent to any hotspots. Unit
performance will be impaired if
installed next to hotspots.
Only open the stop valves
for the refrigerant pipes after
installation has been fully
completed.
Use caps or adhesive tape to
seal off the
open refrigerant pipes and
prevent the ingress of humidity.
Never kink or push in the
refrigerant pipes.
Avoid unnecessary bending.
This minimises the pressure
loss in the refrigerant pipes and
ensures that the compressor
oil can flow back without
obstruction.
Special measures concerning
the oil return pipe must
be taken if the outdoor
components is mounted above
the indoor unit.
See section "Oil return
measures".
Add refrigerant if the basic
length of the refrigerant pipe
exceeds 5 metres. The amount
of additional refrigerant is
given in the chapter "Adding
refrigerant".
Only use the union nuts
supplied with the refrigerant
pipes. These should only
be removed shortly before
connecting the refrigerant
pipes.
Establish all electrical
connections is accordance with
the relevant DIN- and VDE
standards.
Ensure the electrical cables
are properly connected to the
terminals, otherwise there is a
risk of fire.
Display Cause Required action
E1 Faulty circulation sensor in indoor unit Contact specialist dealer
E2 Faulty frost protection sensor in indoor unit Contact specialist dealer
E4
Cooling mode: No cooling output after 30 min.
Heating mode> No heating output after 30 min.
Contact specialist dealer
E5
Cooling mode: Frost protection has tripped
Heating mode> Overheating protection has tripped
Contact specialist dealer
E6 Break in internal control cable jumper Check jumper connector
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