Dismantling
DANGER!
Danger of fatal injury due to electric current!
Electrical connections may be installed only by qualied
electricians.
Before opening the unit, disconnect the system from the
power supply and secure it from being switched back
on!
REMOVAL OF THE BUFFER BATTERY
ATTENTION
Before scrapping the heating and heat pump regulator, re-
move the buer battery on the main board. You can use
a screwdriver to remove the battery from its bracket. Dis-
pose of battery and electronic components in keeping
with environmental considerations.
Softwareupdate
A software version < V2.63 must no longer be loaded on a unit
(only LWD... and SWP371-SWP691 and SWP291H-SWP561H) with
software version ≥V2.63..
Output-controlled air/water heat pumps may only be operated
with software version V3.xx and higher..
Commissioning / Switching on
for the rst time
When switched on for the rst time the language selection ap-
pears rst.
Select the display language: part 1 of the conroller
manual, section “Basis information on the operation“.
You see:
When the heat pump is switched on for the rst time the
above display appears.
The display always appears when the controller is swit-
ched on or on changing to the standards menu. This
screen is no longer displayed if the heat pump or ZWE1
has more than 10 operating hours.
No ZWE (second heat generator) is released by the controller until
the display is conrmed with OK.
NOTICE
No heat generator runs during a cold start of air/water heat
pumps.
ATTENTION
The unit can be damaged if the display is conrmed with
OK, although the system is not properly lled.
On switching on the controller voltage, under certain circum-
stances the following is displayed:
After deleting this display the unit can be operated properly.
Otherwise test the 3 pole cable for the BUS connection.
The following display then appears:
NOTICE
The heating phase until the compressor starts can take se-
veral hours when starting up air/water heat pumps for the
rst time.
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