Maintenance; Fault Finding - Worcester GREENSTAR CDi CLASSIC SYSTEM User Instructions

4

MAINTENANCE

Your new Greenstar CDi Classic System gasfired 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.
4.1

FAULT FINDING

This table gives information on basic operating system
problems.
Problem
EA fault code flashing on
display
Desired room temperature
is not reached
Desired room temperature
too high
Heating stays on too long
Hot water temperature
is too low
Hot water temperature
is too high
ON/OFF indicator is not
illuminated
Table 4 Fault finding
GREENSTAR CDi CLASSIC SYSTEM – 6 720 812 178 (2014/07)
Cause
No gas supply/low gas supply pressure
Condensate outlet blocked
Flue blocked
Thermostatic radiator valve(s) set too low
Temperature control for central heating flow
on boiler set too low
Air trapped in heating system
Low temperature setting on the boiler
controls
Radiators are too hot
Clock is incorrectly set
Temperature set too low
Temperature set too high
Momentary power failure
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 System 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.
Remedy
▶ Contact your gas supplier.
▶ If it is safe to do so, check your condensate pipe
outlet for blockages, such as ice or foreign
objects.
▶ If it is safe to do so, check your flue outlet for
damage or blockages.
▶ Increase thermostatic radiator valve setting(s)
▶ Increase central heating flow temperature control
setting
▶ Bleed radiators and recharge heating system
▶ Increase settings on boiler controls
▶ Turn down thermostatic radiator valves/room
thermostat
▶ Reduce central heating temperature by turning
down the central heating control on boiler
▶ Check setting and adjust
▶ Check settings and adjust
▶ Check settings and adjust
▶ Disconnect boiler supply, wait a few seconds then
reconnect.
Maintenance
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