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Worcester-Bosch Greenstar i System Compact Manual

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Fault Finding
Greenstar i System ErP - 6 720 813 281 (2014/09)
7Fault Finding
In the event that the appliance stops functioning or does not perform as expected, please see table below These problems are some
of the most common causes. Should the problem persist or if other fault codes are displayed, then it will be necessary to contact
Worcester, Bosch Group.
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
appliance set too low
▶ Increase central heating flow temperature control
setting
Low temperature setting on the room thermostat ▶ Increase setting on the room thermostat.
Air trapped in heating system ▶ Bleed radiators and re-pressurise the heating system
Low system water pressure ▶ Re-pressurise the system, refer to page 12
Desired room
temperature too
high
Thermostatic radiator valves are set to high ▶ Turn down thermostatic radiator valves.
Room thermostat is set too high ▶ Turn down room thermostat.
Radiators are too
hot
Temperature control on appliance set too high ▶ Reduce central heating temperature by turning down
the Central Heating control on appliance.
Note: This could prevent your property reaching the
desired temperature during cold weather periods.
Heating stays on
for too long
Clock is incorrectly set ▶ Check clock setting and adjust
No blue
Operation/Fault
Indicator
Momentary power failure ▶ Disconnect boiler supply, wait a few seconds then
reconnect.
Energy saving feature is activated ▶ Ask your installer to reset the blue light
Hot water
temperature too
low
Temperature set too low:
• Cylinder thermostat control.
• Appliance hot water control (this feature is
only available if the option integral diverter
valve has been fitted)
▶ Check setting and adjust
Air trapped in heating system ▶ Bleed radiators and re-pressurise the heating system
Low system water pressure ▶ Re-pressurise the system, refer to page 12
Hot water
temperature too
high
Temperature set too high:
• Cylinder thermostat control.
• Appliance hot water control (this feature is
only available if the option integral diverter
valve has been fitted)
▶ Check setting and adjust
Table 2 Fault finding
… 15 …


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