Specifications

7 181 465 346 GB (03.02)
Bosch Heatronic board functions
11
2.5.2 Secondary Service Level
Operation
In order to change or check the values of the service
functions:
B Press buttons and simultaneously until the
symbol = = appears on the display.
The buttons and are lighted.
B Turn the temperature control until the desired
function number appears on the display.
Once changed or checked the function value:
B Press buttons and simultaneously until the
symbol [ ] appears on the display.
The display shows the heating outlet temperature.
B Regulate the temperature control and the tem-
perature control on the previously set positions.
To reset all settings on Service Levels 1 and 2 to the
factory setting:
B Power OFF the appliance.
B Press buttons and simultaneously and keep
them pressed.
B Switch on appliance, press and hold the and
buttons until the display shows r2 followed by [ ].
Values that can be modified:
Description Display Reset Value
5.0 Reduced max. heating output 0 - 99 % and sealed 99
5.1 Continuous ignition (for testing ignition without
gas)
0 = off
1 = on
0
5.5 Increased min. heating and heat store charging
output
0 - 99 % 0
5.9 Starting speed option (if flame propagation is
poor, set high starting speed)
0 = First start at low speed;
1 = First start at high speed)
0
6.7 Pump deactivation in HW mode, ZW only. 0 = off, 1 = on 1
6.8 Cycle time for heat exchanger constant hot water
function on ZW model.
0 - 60 min 0
6.9 Constant hot water 0 - 30 min 3
7.3 Venting function 0 = off,
1 = On for 8 cycles then
permanently off (i.e. set to 0)
2 = on
1
7.7 Temperature-dependent output reduction 0 = off;
1 = Heating on
2 = Hot water on
3 = Heating and hot water on
3
8.5 Trap filling programme 0 = off
1 = on
1
Table 5 Secondary Service Level; Values that can be modified