Factory Reset And Fault Codes; Factory Reset; Locking Or Blocking Fault Conditions - Bosch WORCESTER Greenstar Heatslave II 12/18 Installation, Commissioning And Servicing Instruction Manual

Floor standing oil-fired condensing combination boiler using conventional and room sealed flue
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4
Fig. 97
2.7A Demand/fault
LED (blue light) activation
Menus 3 and Test are empty and are not used on this
appliance.
8.4

Factory reset and fault codes

8.4.1

Factory reset

To reset changes made in Menu 2 back to the factory default setting:
Any changes made to Menu 1 are not reset by these
actions.
1
Fig. 98
1. Press and hold the
ok
5 seconds. The screen will then display code 8E with the spanner
symbol.
2. Press the
button and "reset" will be displayed with the tick
reset
symbol for 3 seconds. After 3 seconds the display will revert to the
normal operation screen.
Greenstar Heatslave II
2022 +
6 721 843 978 (2022/01)
6 720 805 209-67.1TL
O = The blue light will only
operate as a flashing fault
alert.
1 = The blue light will operate
as a boiler operation and
fault alert.
This is set to 1 by default.
6 720 805 209-68.1TL
and
buttons for at least
2
Fig. 99
8.4.2

Locking or Blocking fault conditions

Should a fault develop with this boiler (or the system), the boiler will
enter into a Locking or Blocking condition.
Locking condition
• The boiler display will flash a warning triangle.
• A 3 digit cause code will flash on the display during a Locking error.
• An alpha numeric fault code will be displayed indicating the fault
group.
• The operation and fault indicator will flash on the front of the
appliance.
Manual intervention is required following clearance of the fault.
▶ Press the
reset
reset button on the boiler fascia.
Blocking condition
• The boiler will stop operating and no fault code will be displayed.
• An alpha numeric fault code is accessed in the info menu by pressing
the
spanner/return button.
Unlike a Locking error, during a Blocking error (or normal
operating status), a fault code is not automatically
displayed.
• A 3 digit cause code is also accessed in the info menu by pressing the
spanner/return button.
• The condition will clear automatically when the associated fault
clears e.g. waiting for an area of the boiler to cool down.
• In some cases a Blocking error has a defined time duration prior to
changing to a Locking condition.
Fault finding and diagnosis
6 720 805 209-68.1TL
53

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