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Display of store temperatures
TST, TSTB, TSTT, TDIS
Store temperatures
Display range: -40 … +260 °C [-40 … +500 °F]
Indicates the store temperatures.
• TST : Store temperature (backup heating off)
• TSTB : Store temperature base
• TSTT : Store temperature top
• TDIS : Thermal disinfection temperature
(replaces TSTT if, during thermal disinfection, the disinfection period DDIS is
active)
Display of sensors 3, 4 and VFD
S3, S4, VFD
Sensor temperatures
Display range: -40 … +260 °C [-40 … +500 °F]
VFD: 0 … 100 °C [32 … 212 °F]
Indicates the current temperature at the corresponding additional sensor (without
control function).
• S3 : Temperature at sensor 3 (backup heating off)
• S4 : Temperature at sensor 4
• VFD : Grundfos Direct Sensor™
Note:
S3 and S4 will only be indicated if the temperature sensors are connected
to the corresponding terminals. VFD will be indicated only if a Grundfos
Direct Sensor™ has been connected and registered.
Display of further temperatures
TFL, TR
Further measured temperatures
Display range: -40 … +260 °C [-40 … +500 °F]
Indicates the current temperature at the corresponding sensor.
• TFL : Temperature flow
• TR : Temperature return
Indication of the flow rate
L/h
Flow rate / PWM feedback signal
Display range: depending on the sensor type used and the PWM feedback signal
selected respectively
Indicates the current flow rate at the VFD flow rate sensor or of the bidirectional
pump and its error messages respectively.
The display range depends on the sensor type selected.
Indication of current pump speed
n %
Current pump speed
Display range: 10 … 100 %
Indicates the current pump speed.
