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Siemens Switzerland Ltd
User manual RVS61.843 CE1U2355en_02
HVAC Products 6 The settings in detail 23. November 2007
3-phase current
For monitoring the 3-phase current, the 3 phases must be connected to inputs Ex5, Ex6
and Ex7 in the correct order (L1, L2, and L3). The controller monitors the correct
temporal order of the 3 phases. Any phase asymmetry, phase interruption or too low
rated voltage of one or several phases is regarded as a 3-phase error.
If a 3-phase error is continuously present during the period of time set under “Delay 3-
phase error” (2894), the compressor is switched off for the minimum off time. The
controller delivers status message
180: 3-phase current asymmetrical.
If the 3-phase error occurs again within “Duration error repetition” (2889) for at least the
delay time, the heat pump initiates lockout, if the preselected number of errors has
been exceeded. The controller delivers error message
355: 3-phase current
asymmetrical
. The heat pump must be manually reset.
Mixing group
Line no. Operating line
6014 Function mixing group 1
Heating circuit 1
Cooling circuit 1
Heating circuit/cooling circuit 1
Prim contr/system pump
DHW primary controller
Instantaneous DHW heater
Defines use of mixing group 1 and of its inputs and outputs.
The settings are made on the respective menu (heating circuit 1, cooling circuit 1, etc.).
The table below shows the logical assignment of the sensors / relays of the mixing
group function to the physical terminals of the mixing group:
Logical assignment of sensors and relays per
mixing group function
Physical terminal on
the mixing group
Designation of
Heating circuit 1
Cooling circuit 1
Heating
circuit/cooling
DHW primary
controller
Instantaneous
DHW heater
B1
p B1 B16 B1 B15 B35 B38
Y1
Y1 Y23 Y1 Y19 Y31 Y33
Y2
t
Y2 Y24 Y2 Y20 Y32 Y34
Q2
s Q2 Q24 Q2 Q14 Q3 Q34
Extension module
Line no. Operating line
6020
6021
Function extension module 1, 2
None
Multifunctional
Cooling circuit 1
Heating circuit 2
Solar DHW
Primary contr/system pump
DHW primary controller
Instantaneous DHW heater
Function mixing group 1
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