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23 hours, are switched on for 10–20 seconds, one after the
other.
3.4.4
Safety cut-out (SCO) in the heating circuit
If the temperature in the heating circuit of the internal electric
back-up heater exceeds the maximum temperature (trigger
range 92–98 °C), the safety cut-out shuts down the electric
back-up heater as a securing measure. After it is triggered,
the safety cut-out must be reset.
–
Max. heating circuit temperature: 98 ℃
3.5
Product design
1
1
Control elements
3.6
Display and control elements
8000017440_FT Operating instructions
−6 K
11:31
30
Control
Function
element
–
Activate/deactivate standby mode: Press for
less than three seconds
–
Reset button: Press and hold for more than
three seconds to restart
Setting the flow temperature and/or desired
temperature
Setting the domestic hot water temperature
–
Calling up help
–
Calling up the time programme assistant
(control module)
–
Go one level back
–
Cancelling input
–
Calling up the menu
–
Back to the main menu
–
Calling up the basic display
–
Confirming a selection/change
–
Saving the set value
–
Navigating through the menu structure
–
Reducing or increasing the set value
–
Navigating to individual numbers and letters
and
3.7
Displayed symbols
Validity: Product without control module
Symbol
Meaning
Current system pressure (display in five
levels):
–
Permanently on: Filling pressure in the
permitted range
–
Flashing: Filling pressure outside the
permitted range
Current compressor modulation (display in
five levels):
–
Permanently on: Compressor is running
–
Flashing: Compressor starts
Current support by the electric back-up
heater (display in five levels):
–
Permanently on: Back-up heater is heat-
ing
–
Flashing: Back-up heater starts
Heating mode activated:
–
Permanently on: Heat pump off, no heat
demand
–
Flashing: Heat pump on, heat demand
present
Domestic hot water generation activated:
–
Permanently on: Heat pump off, no heat
demand
–
Flashing: Heat pump on, heat demand
present
Installer level active
Display locked
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