6 720 820 872 (2016/12)
CR 400 | CW 400 | CW 800
48 | Troubleshooting
7.6.6 Reset menu
You can delete different settings or lists or reset them to the
default setting in this menu.
7.6.7 Calibration menu
8
Troubleshooting
A fault in the system is indicated on the display of the user
interface. The cause can be a fault on the user interface, in a
component, in an assembly or on the heat source. The
instructions belonging to the affected component, assembly or
heat source used and especially the service manual with
detailed fault descriptions contain additional information on
troubleshooting. Many heat source faults do not appear on the
display of the user interface. They are described in the
documents for the heat source used.
The user interface saves the faults that have most recently
occurred with a time stamp (
Æ
fault history, page 47).
Menu item
Description
Fault history
The fault history is deleted. If currently a
fault is present, it is immediately entered
again.
Service
displays
The maintenance and service displays are
reset.
Hours run/
burner starts
The counters for the burner runtime and
burner starts are reset.
Heating
circuits time
prog
The time programs of all heating circuits are
reset to the default setting. This menu item
has no effect on those heating circuits with a
CR 100 assigned as remote control.
Time prog.
DHW
All time programs of all DHW systems
(including the time programs for the DHW
circulation pump) are reset to the default
setting.
Solar thermal
system
All settings referring to the solar system are
reset to the default setting.
The solar system must be recommissioned
after this reset!
Default setting All settings are reset to the corresponding
default setting.
The system must be recommissioned after
this reset!
Table 23 Resetting the settings
Menu item
Description
Room temp.
sen. adj.
▶ Position a suitable precision instrument
near the user interface. The precision
instrument must not transfer any heat to
the user interface.
▶ Keep away from heat sources such as
sunlight, body heat, etc. for 1 hour.
▶ Adjust the displayed room temperature
correction value ( – 3 ...
0
... + 3 K).
Time
correction
This correction ( – 20 ...
0
... + 20 s) is
automatically carried out once a week.
Example: deviation of the time by
approximately –6 minutes per year
•
–6 minutes per year is equal to –
360 seconds per year
•
1 year = 52 weeks
•
–360 seconds: 52 weeks
•
–6.92 seconds per week
•
Correction factor = +7 s/week.
Table 24 Settings in the Calibration menu
Use only original spare parts. Damage
resulting from spare parts, which are not
supplied by the manufacturer, is excluded
from liability.
If a fault cannot be corrected, contact the
service technician responsible for your area or
the nearest Bosch office.
Summary of Contents for CR 400
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