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Maintenance
Greenstar Heatslave II 2022+ – 6 721 843 979 (2022/01)
Fig. 8 System gassing trouble-shooting flow chart
4.5 Maintaining your boiler
Your new boiler represents a long term investment in a reliable,
high quality product.
In order to realise its maximum working life and to ensure it
continues to operate at peak efficiency and performance, it is
essential that servicing and maintenance checks are performed
at least once a year by an OFTEC engineer or other suitably
qualified person.
If you would like to know more about servicing options from
Worcester, Bosch Group, please visit worcester-bosch.co.uk.
Please tick the appropriate box on your warranty registration
card for further details of the Worcester, Bosch Group Service
Contract.
When your boiler requires servicing please contact a
Worcester, Bosch Group contact centre (see inside front cover
for details).
In addition to the service contract we are pleased to offer a one-
off annual service or breakdown call out for your boiler.
Maintenance tips
Regularly check the oil level in the tank. Running the tank empty
or low can lead to damage to the burner.
Do not obstruct the flue outlet or the air inlet.
Use in hard water areas
In exceptionally hard water areas a device to prevent scale
formation may be fitted. Installation of a scale inhibitor
assembly should be in accordance with the requirements of the
local water company. An isolating valve should be fitted to
allow for servicing.
Is your system pressure constantly increasing even
when the boiler is off for extended periods of time?
NO
NO NO
NO
NO
YES
YES
YES
YES
Is your system pressure regularly
dropping? (i.e. you constantly
have to top up your boiler’s pressure)
Can you confirm that the filling
link is not stuck open/passing
water in any way?
Does system pressure
increase when the
boiler is on?
Does the system pressure increase to
the high pressure red zone on the
pressure gauge?
Does the problem persist?
Your
boiler
is
fine
Your
boiler
is
fine
Contact
a
service
engineer
YES
Contact
a
service
engineer
Contact
a
service
engineer
NO YES
Your
boiler
is
fine
0010039760-001
11


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