134
Display Meaning
Mixer for heating/cooling cir-
cuit 4
Open Only in conjunction with an external buffer cylinder:
Mixer for heating/cooling circuit 4 opens.
Stop Current position is maintained.
Close Mixer closes.
Signal cooling On Cooling mode enabled
Off Cooling mode off
Heat generator group
Display Meaning
Secondary circuit pump speed Set value Speed of internal secondary pump/heating circuit pump, heating/
cooling circuit 1 in %
External heat generator ON/OFF Switch demand for external heat generator on and off.
External booster heater set
temperature
Set value Set flow temperature of external heat generator in °C
Dual mode valve Open Mixer for system flow opens.
Stop Current position is maintained.
Close Mixer closes.
DHW group
Display Meaning
Secondary circuit pump speed Set value Speed of internal secondary pump/heating circuit pump, heating/
cooling circuit 1 in %
4/3-way valve position Set value 4/3-way valve position in %
For indoor units with 1 integral heating/cooling circuit:
0 % Secondary circuit (heating/cooling circuit 1 or exter-
nal buffer cylinder)
> 0 % to 50 % Mixed operation of the secondary circuit (heating/
cooling circuit 1 or external buffer cylinder) and de-
frosting
> 50 % Defrost
100 % DHW heating
For indoor units with 2 integral heating/cooling circuits:
0 % Heating/cooling circuit 1
> 0 % to 50 % Mixed operation of heating/cooling circuit 1 and de-
frost or heating/cooling circuit 2
> 50 % Defrost or heating/cooling circuit 2
100 % DHW heating
DHW circulation pump ON/OFF Switch the DHW circulation pump on and off.
System configuration and diagnostics
Checking outputs (actuator test) (cont.)
6222080
Diagnosis
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