Service; Service Actions - Nibe F1355 Operating Manual

4 Service

Service actions

NOTE
Servicing should only be carried out by persons
with the necessary expertise.
When replacing components on F1355 only re-
placement parts from NIBE may be used.
Emergency mode
NOTE
Switch (SF1) must not be moved to " " or "
until F1355 has been filled with water. This can
damage the compressor.
Emergency mode is used in event of operational interfer-
ence and in conjunction with service. Hot water is not
produced in emergency mode.
Emergency mode is activated by setting switch (SF1) to
" ". This means that:
The status lamp illuminates yellow.
■
The display is not lit and the control computer is not
■
connected.
Hot water is not produced.
■
The compressor and brine pump for each cooling
■
module are off.
Accessories are switched off.
■
Internal heating medium pumps are active.
■
The emergency mode relay (K1) is active.
■
External additional heating is active if it is connected to
the emergency mode relay (K1, terminal block X4). En-
sure that the heating medium circulates through the
external additional heating.
Cooling module EP14
GP1
QM1
40 Chapter 4 | Service
Cooling module EP15
GP1
QM1
"
Draining the water heater (if docked)
The siphon principle is used to empty the hot water
heater. This can be done either via the drain valve on the
incoming cold water pipe or by inserting a hose into the
cold water connection.
Draining the climate system
In order to carry out service on the climate system, it may
be easier to drain the system first. This can be done in
different ways depending on what needs doing:
NOTE
There may be some hot water when draining
the heating medium side/climate system. There
is a risk of scalding.
Draining the heating medium side in a cooling
module
If, for example, the heating medium pump requires re-
placing or a cooling module requires servicing, drain the
heating medium side as follows:
1. Close the shut-off valves outside the heat pump for
the heating medium side (return and flow line).
2. Connect a hose to the bleed valve (QM1) and open
the valve. Some liquid will run out.
3. Air must get into the system for the remaining liquid
to run out. To let in air, loosen the connection slightly
at the shut-off valve that joins the climate system
with the heat pump by connection (XL2) for the re-
spective cooling module.
GP2
When the heating medium side is drained, the required
service can be performed and/or replacement of any
components carried out.
Draining the entire climate system
QM2
If the entire climate system requires draining, do this as
follows:
1. Connect a hose to the bleed valve (QM1) and open
the valve. Some liquid will run out.
2. Air must get into the system for the remaining liquid
to run out. This is done by unscrewing the bleed
screw on the highest placed radiator in the property.
When the climate system is empty the requisite service
can be carried out.
GP2
QM2
NIBE F1355