Pre-Service Check List - Worcester GREENSTAR HE combi Series Installation And Servicing Instructions

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 30).
5 Test combustion air/flue gas
(see page 31).
6 Check CO setting for min./
2
max. (gas/air ratio)
(see page 30).
7 Check gas and water systems for
leaks (see page 16).
8 On combi models, check hot water
outlet temperature (see page 34).
9 Check heat exchanger
(see page 34).
10 Check burner (see page 35).
11 Clean condensation trap
(see page 36).
12 Check charge pressure of
expansion vessel matches
static head of heating system.
13 Check central heating system
pressure.
14 Check electrical wiring for damage.
15 Check heating programmer settings.
16 Check appliances that are part of
the heating system.
Table 17
6 720 610 576 GB (03.02)
Date
mbar
min. %
max. %
mbar
mbar
mbar
Maintenance
33