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Maintenance
GREENSTAR CDi CLASSIC REGULAR ErP – 6 720 815 726 (2015/05)
4 MAINTENANCE
Your new Greenstar CDi Classic Regular ErP gas-fired appliance
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 your boiler receives regular servicing and
maintenance checks from a competent person beyond the
initial 2 year guarantee period.
If you would like to know more about a Worcester Bosch service
contract, please tick the appropriate box on your warranty
registration card.
If your Greenstar CDi Classic Regular ErP should fail to operate
correctly or requires servicing please contact the Worcester
Bosch Service Department (see back page cover for details).
Details of the boiler including the Gas Council number can be
found under the controls cover flap on the boiler.
4.1 FAULT FINDING
This table gives information on basic operating system problems.
Problem Cause Remedy
EA fault code flashing on
display
No gas supply/low gas supply pressure Contact your gas supplier.
Condensate outlet blocked If it is safe to do so, check your condensate pipe
outlet for blockages, such as ice or foreign
objects.
Flue blocked If it is safe to do so, check your flue outlet for
damage or blockages.
Desired room temperature
is not reached
Thermostatic radiator valve(s) set too low Increase thermostatic radiator valve setting(s)
Temperature control for central heating flow
on boiler set too low
Increase central heating flow temperature control
setting
Air trapped in heating system Bleed radiators and recharge heating system
Low temperature setting on the boiler
controls
Increase settings on boiler controls
Desired room temperature
too high
Radiators are too hot Turn down thermostatic radiator valves/room
thermostat
Reduce central heating temperature by turning
down the Central Heating control on boiler
Heating stays on too long Clock is incorrectly set Check setting and adjust
ON/OFF Indicator is not
illuminated
Momentary power failure Disconnect boiler supply, wait a few seconds then
reconnect.
Table 3 Fault finding
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