OPERATION
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Service Mode menu
Step 1 [\/2/4| Display value. Currently measured CH flow temperature in °C. Also see
section 14.2, page 70.
Step 2 Activate service mode? Yes: Æ step 3
No: Æ step 1
Step 3 To activate service mode 1st step:
Press and hold the
d button for more than 2 but not longer than 5 seconds
Step 4 [\/2/4] Display value. As soon as a non-flashing dot is shown in the right-hand
bottom corner of the display, the boiler is in heating mode at a capacity of
100 % for a maximum of 30 minutes. The maximum CH flow temperature
as set on the maximum CH flow temperature dial of the BC10 basic
controller (control panel) now applies.
Step 5 To activate service mode 2nd step:
Simultaneously press and hold the
d + e buttons for more than 2 seconds.
Step 6 [l/-/-] Display setting. Maximum capacity setting during heating mode in %.
Also see section 14.3, page 71. In this case: [l/-/-] = 100 %. Service mode
has been activated. You can now temporarily lower the boiler performance
to partial load to check and if relevant set the gas/air ratio or the
ionisation current.
Step 7 Press and hold the c button until the display shows [l/2/5] with a 80-kW boiler or
[l/2/0] with a 65 and 100-kW boiler.
Step 8 [l/2/5] Display setting: with a 80-kW boiler and [l/2/0] with a 65 and 100-kW boiler.
Minimum capacity setting during heating mode in %. Also see
section 14.3, page 71. The boiler will reduce its performance to 25 % or
20 % respectively within a couple of seconds. The maximum CH flow
temperature set on the BC10 basic controller (control panel) applies now.
Check the gas/air ratio or the ionisation current and if necessary set the
gas/air ratio according to subsection 10.2.7 or subsection 10.2.11.
Step 9 Press the e button.
Step 10 [f/\/5| Display setting: This parameter shows the pump run-over time in minutes
when heating mode has been ended. Also see section 14.3, page 71.
Step 11 Press the e button.
Step 12 [c/\/1| Display setting: This parameter indicates the DHW mode status setting.
Also see section 14.3, page 71..
Step 13 Press the e button.
Step 14 [\/2/4| Display value. Currently measured CH flow temperature in °C.
Also see section 14.3, page 71.
Step 15 Press the e button.
Step 16 [p/1.6| Display value. Currently measured system pressure in bar.
Also see section 14.3, page 71.
Step 17 Press the e button.
Step 18 [-/a/\| Display code: Operating phase: The boiler is in service mode.
Also see section 14.3, page 71.
Step 19 Press the e button.
Table 11 Service mode
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