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8.1
Pre-Service Check List
1
Call up the last fault stored by the
Bosch Heatronic, Service Function .0,
(see page 34).
2
Check ionisation current, Service
Function 3.3, (see page 34).
3
Perform visual check of air/flue
duct.Visual check of diaphragm for
soiling and splits (see page 36).
4
Check gas supply pressure
(see page 29).
5
Test combustion air/flue gas
(see page 31).
6
Check CO
setting for min./
2
max. (gas/air ratio)
(see page 29).
7
Check gas and water systems for
leaks (see page 16).
8
Check heat exchanger
(see page 34).
9
Check 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 15
6 720 611 137 GB (03.02)
Date
mbar
min. %
max. %
mbar
Maintenance
33
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