Selecting Service Menus - Bosch WORCESTER Greenstar Heatslave II External 12/18 Installation, Commissioning And Servicing Instructions

1
2
3
Fig. 68 Start up screens
Screen display
All possible screen symbols are displayed briefly during start up.
Extended diagnostic features have rendered the greyed out symbols not
required for the operation of this appliance.
1 2 3
Fig. 69
[1] Central heating symbol
Displays this symbol during CH demand.
[2] Hot water symbol
Displays this symbol during DHW demand (DHW flow rate >
2 litres per minute) and tank reheat.
[3] Weather Compensation active symbol
Displays this symbol only if a Weather Compensation sensor has
been fitted to the appliance and is active.
[4] Alert symbol
Displays with the boiler status code and diagnostic code during a
fault condition.
[5] Service mode symbol
Displays when in the service menu.
Greenstar Heatslave II External 2022+ - 6 721 843 980 (2022/01)
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[6] Centigrade symbol
Displays next to the temperature reading.
[7] Confirmation symbol
This symbol confirms a manual change.
[8] Alpha/Numerical display
Displays a temperature or boiler status code.
[9] Text display
Displays ECO or diagnostic code.
Status code
During normal operation various status codes can be displayed by
pressing the service button.
The first screen of the information menu displays the current status
code, this will change as the boiler runs through the various modes and
sequences.
These are not faults, but provide information concerning the current
status.
Status
Code
200 CH active The Central Heating system is being heated.
201 DHW active The Domestic Hot Water is being heated/
tank is being heated.
202 CH Anti rapid- Time delay to prevent rapid-cycling of the
cycle mode boiler on the room thermostat.
203 System stand-by The boiler has no CH or DHW demands.
270 Power up mode The boiler is ON, warming up and running self
check routines. This lasts approximately
35 seconds.
358 Three way valve Anti-seize operation. If the diverter valve has
anti-seize not moved in 24 hours, the valve is operated
to prevent seizing, duration approximately
10 seconds.
Table 8
6.3.6

Selecting Service Menus

1. Press and hold and
ok
display will show Menu 1.
Double up or down arrows indicate that the menu can only be
scrolled up or down.
An up and down arrow indicates position in the menu where options
can be scrolled either up or down.
1
Fig. 70
1. Scroll up and down through the menus with the arrow
buttons
Commissioning
buttons together for 1 second, the
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