- (CS01 - 41) -
Control system
- (CS01 - 41) -
CONTROL 
SYSTEM
CONTROL 
SYSTEM
Heat pump functions
z
LINE FUNCTION
2803 Overrun time cond pump
2843 Compressor off time min
2844 Switch-off temp max
2862 Locking time stage 2
2873 Compressor mod run time
2882 Release integral electric ow
2884 Release electric ow below OT
2886 Compensation heat decit
2916 Max setpoint HP DHW charg
2920 With electrical utility lock
Overrun time cond pump
When the compressor is switched off, the condenser 
pump continues to run for the set overrun time.
Compressor off time min
For the same reason, the compressor remains 
switched off for the minimum period of time set here. 
Switch-off temperature maximum if the ow or the 
return temperature exceeds the maximum switchoff temperature, the compressor will be switched 
off.The heat pump is switched on again when the 
temperature at both sensors has dropped by the 
"Switching diff return temp" below the maximum 
switch-off temperature and the minimum off time 
has elapsed.
Switch-off temp max
If the ow or the return temperature exceeds the 
maximum switch off temperature, the compressor 
will be switched off.
Example (line 2844): 
Floor heating system = 55 °C  
Higher temperature radiator = 65 °C
Locking time stage 2
When compressor is restarted, the time which 
keeps minimum capacity can be adjusted. 
Efciency becomes better; however, the time of 
rising capacity becomes long.
Compressor mod run time
Compressor mod run time means the time of 
compressor frequency indication changed from 
minimum to maximum. 
If this setting value changes to small, compressor 
frequency changes more quickly.
Warning:
This setting value is too small, the efciency is 
decreased due to the compressor frequency 
changes frequently.
Release integral electric ow
After the release of the 1st stage (heater 1: 
on, heater 2: off), the controller compares the 
temperature measured with the point of engagement 
and forms an integral and includes a possible decit 
of heat. Once the value of the integral reaches 
the maximum value (line 2882), the 2nd stage 
is engaged (heater 1: off, heater 2: control). The 
controller continuously compares the temperature 
measured at the point of engagement and new 
features to the decit of heat in the full release. 
When the full release reaches the value set (line 
2882), the 3rd stage of the heater is triggered (heater 
1: on, heater 2: Control).
Release electric ow below OT
The heater will be activated only if the attenuated 
outdoor temperature is below the temperature set 
here.
Warning:
This setting is too low, there may be a feeling of 
discomfort due to the fact that the heat pump is
unable to meet the heating requirements alone 
at low outdoor temperatures, and heaters are not 
switched on.