Worcester Greenstar 8000 Life Installation And Maintenance Instructions Manual page 56

Settings in the service menu
Service function L.3
3-CA DHW mode
3-d1 Pump range map
3-d2 Pump control mode
3-d3 Min. output
3-d4 Max. output
3-d6 Pump overrun
Table 22 Menu 3: Basic settings
[*] Range rated
Menu 4 (L.4): Settings
▶ Press the ( key and the * key at the same time, until L.A is
displayed.
▶ Keep pressing the  key, until L.4 is displayed.
▶ To confirm the selection: Press the ok key.
▶ Select and set the service function.
Service function L.4
4-A1 Ventilation function
4-A2 Siphon filling program
4-A3 3-way valve middle position
56
Settings/adjustment range
• 0: Comfort mode, the appliance is held
constantly at the set temperature
• 1: Eco mode, heating to the set temperature
only when domestic hot water is extracted
• 0: Pump output proportional to the thermal
output
• 1: Constant pressure 150 mbar
• 2: Constant pressure 200 mbar
• 3: Constant pressure 250 mbar
• 4: Constant pressure 300 mbar
• 5: Constant pressure 350 mbar
• 6: Constant pressure 400 mbar
• ON
• OFF
• 10... 100 %
• 10... 100 %
• 1... 2... 60 min
• 24 h
The basic settings are depicted as highlighted in the following table.
Settings/adjustment range
• 0
• 1: Auto
• 2: Permanent
• 0: Switched off (only allowed during
maintenance work)
• 1: Switched on at minimum output
• 2: Switched on at minimum thermal output
• OFF
• ON
Remark/restriction
Short waiting time in comfort mode, when
domestic hot water is extracted. The appliance
therefore switches on, even if no domestic hot
water is extracted
▶ Set low pump curve to save energy and avoid
possible flow noise ( chapter 12.5,
page 88).
• ON: Saving energy: intelligent heating pump
stop in heating systems with weather-
compensated controller. The heating pump is
only switched on when needed.
Pump rate at minimum thermal output. Only
available with pump characteristic map 0.
Pump rate at maximum thermal output. Only
available with pump characteristic map 0.
Run-on time of the heating pump: pump run-on
time begins at the end of the heat requirement.
Remark/restriction
The ventilation function can be activated after
maintenance.
During ventilation the symbol
info area of the standard display Ventilation
function.
The siphon filling program is activated in the
following cases:
• On, boiler min.: the appliance is being switched
on.
• On, heating min.: The burner was not in use for
at least 28 days.
• The operating mode is switched from summer
to winter mode.
• After a reset.
The next time there is a heat requirement for
heating, the appliance is held at low output for
15 minutes. The siphon filling program remains
active until the appliance has completed
15 minutes of operation at low output.
During the siphon filling program the symbol
appears in the info area of the standard display
Siphon filling program.
The function ensures that the system is fully
drained and that the motor can be easily removed.
The 3-way valve remains at the centre position for
approx. 15 minutes.
Greenstar 8000 Life – 6720883865 (2021/11)
appears in the