Technical data

6 720 611 445 GB (03.11)
Maintenance
33
8.1 Pre-Service Check List
Date
1Call up the last fault stored by the
Bosch Heatronic, Service Function .0,
(see page 34).
2Check ionisation current, Service
Function 3.3, (see page 34).
3Perform visual check of air/flue
duct.Visual check of diaphragm for
soiling and splits (see page 36).
4Check gas supply pressure
(see page 29).
mbar
5Test combustion air/flue gas
(see page 31).
6Check CO
2
setting for min./
max. (gas/air ratio)
(see page 29).
min. %
max. %
7Check gas and water systems for
leaks (see page 16).
8Check heat exchanger
(see page 34).
mbar
9Check burner (see page 35).
10 Clean condensation trap
(see page 35).
11 Check electrical wiring for damage.
12 Check heating programmer settings.
13 Check appliances that are part of
the heating system.
Table 14