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Key (control accessories)
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Greenstar 4000 – 6 720 891 170 (2020/09)
5 Key (control accessories)
Key LED status
The LED on the Key displays different states with flashing or constant
colours.
Table 7 LED status
5.1 Setting the time program
Time program
The same method for setting the time program for heating is used to set
the time program for hot water.
Press the key.
Select and confirm the Heat. time prog. or DHW time prog.menu.
Select and confirm the Time program menu.
The menu items Mon - Fri, Sat - Sun, Mon ... Sun are displayed.
Possible items to change:
Mon - Fri to change switching times for all weekdays together
Mon ... Sun to change switching times for individual days
Sat - Sun to change switching times for weekends
Select and confirm item you want to change.
Select and confirm time entry you want to change.
To change the time, press the or key.
Press the ok key.
The new time is saved. Next time entry is selected.
Add one additional switching time block by selecting +. Delete an
existing switching time block by selecting .
6Shutdown
6.1 Setting frost protection
NOTICE
Risk of damage to the system from frost!
The heating system can freeze up after a prolonged period (e.g. during a
power failure, switching off the power supply, faulty fuel supply, boiler
fault etc.).
Ensure that the heating system is in constant use (particularly when
there is a risk of frost).
If you are leaving your property unoccupied during cold weather, please
leave your external programmer on constant and your room thermostat
set to 12 °C.
Description of the LED displays Example
Flashing red:
Fault, e.g. no communication between the Key and
appliance:
Install the Key again, restore the last functioning
status.
Flashing yellow:
No fault, user please wait.
Flashing green:
No fault, initialisation process is running.
Constant red:
Temporary fault:
Wait for normal operating condition to be resumed.
Constant yellow:
No fault, time and date not available:
Set the time and date on the appliance.
-or-
Key with touch-sensitive indicator: Press touch-
sensitive indicator on Key to start pairing.
Constant green:
No fault, normal operating condition.
LED Off:
No fault, power-saving mode or appliance without power.
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