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We reserve the right to make technical changes.
83052300eUK © ait-deutschland GmbH
2.0
Service water 4 Domestic hot water 4
Set value = Heat pump attempts to reach the set
setpoint value of the domestic hot water tempera-
ture
Service water 5 Domestic hot water 5
with HSP = Heating circulation pump runs during
domestic hot water preparation
wo HSP = Heating circulation pump does not run
during domestic hot water preparation
Heat pump type Factory setting.
SWC with HSP
LWC with HSP
WZS with HSP
WWC with HSP
LWD with HSP
other devices without HSP
SW+HP max Maximum running time
domestic hot water preparation + Heat pump
After the set time has expired, the 2nd heat genera-
tor in the domestic hot water preparation energises,
but only if this has been released previously in the
heating mode!
Defr cycle max Defrost cycle time, maximum
time between two defrost processes
Option only possible for L/W devices:
You can nd the time to be set for the relevant L/W
device in the operating instructions. If you do not
nd any data there, the following applies:
page 77, „Overview: Defrost cycle, Air defrost,
Flow Max“
Defrost. Air. Air defrost
Option only possible for L/W devices:
No = Air defrost not released
Yes = Air defrost generally released above the set
temperature
Approved appliances, see page 77, „Overview:
Defrost cycle, Air defrost, Flow Max“
ATTENTION
Do not set an “air defrost” on non-approved appli-
ances.
Defr. Air max Maximum duration of air defrost
Option only possible for L/W devices and if air de-
frost is released
Defrost 2
Option only possible for L/W devices with 2 com-
pressors
with 1 CP = Defrost with only one compressor
with 2 CP = Defrost with two compressors, if these
also supply before defrosting
Pump opt. Pump optimisation
No = Heating circulation pumps always run, unless
another supply type is requested (domestic hot
water, …) or the device is switched off
Yes = Heating circulation pumps are switched off, if
required
The heating circulation pumps will be switched if the
heat pump has not been requested for more than 3
hours. The heating circulation pumps will then cycle
for 5 minutes every 30 minutes until the heat pump
receives another request.
If the external temperature is above the return set-
point temperature, the heating circulation pumps
will be switched off permanently. They will be
switched on for 1 minute every 150 hours to pre-
vent them from becoming stuck.
Access Data access authorisation
The “Fitter” (= Qualied technicians) provides
access to parameters without a password, which
otherwise requires “Customer service” access.
Brine pres/ow Brine pressure / ow
/
Option only possible for S/W or W/W devices
No = neither brine pressure pressostat nor ow
switch connected
Brine pres = for S/W devices, a brine pressure pres-
sostat is connected on the Defr/Brin/Flow input
Flow = for W/W devices, a ow switch is connected
on the Defr/Brin/Flow input
Pow.suppl. = Phase monitoring relay installed in the
supply pipe of the compressor is connected on
Defr/Brin/Flow input
Pow.+ ow = Phase monitoring relay and ow switch
are connected on the Defr/Brin/Flow input
ATTENTION
For certain devices, a ow switch is installed at the
factory. In this case, always set Defr/Brin/Flow to
“pow. Suppl.” or “pow.+ ow”.
An incorrect setting will compromise the safety and
functional capacity of your device and can result in
serious damage.
Control CP Compressor monitoring
Off = Compressor monitoring switched off
On = Compressor monitoring switched on, if the
rotating eld of the supply line is incorrect, a “Net
On“ fault will be detected
Error number 729, page 73
While the compressor is starting up, compressor
monitoring checks the change in temperature in the
hot gas. If the temperature of the hot gas does not
change while the compressor is running, a malfunc-
tion is displayed.
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