Fault Finding - Worcester Greenstar i System Compact ErP Series User Instructions

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Fault 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
EA fault code No gas supply/low gas supply pressure
flashing on display
Condensate outlet blocked
Flue blocked
Desired room Thermostatic radiator valve(s) set too low
temperature is not
Temperature control for central heating flow on
reached
appliance set too low
Low temperature setting on the room thermostat ▶ Increase setting on the room thermostat.
Air trapped in heating system
Low system water pressure
Desired room Thermostatic radiator valves are set to high
temperature too
Room thermostat is set too high
high
Radiators are too Temperature control on appliance set too high
hot
Heating stays on Clock is incorrectly set
for too long
No blue Momentary power failure
Operation/Fault
Indicator
Energy saving feature is activated
Hot water Temperature set too low:
temperature too
• Cylinder thermostat control.
low
• Appliance hot water control (this feature is
only available if the option integral diverter
valve has been fitted)
Air trapped in heating system
Low system water pressure
Hot water Temperature set too high:
temperature too
• Cylinder thermostat control.
high
• Appliance hot water control (this feature is
only available if the option integral diverter
valve has been fitted)
Table 2 Fault finding
Greenstar i System ErP - 6 720 813 281 (2014/09)
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 re-pressurise the heating system
▶ Re-pressurise the system, refer to page 12
▶ Turn down thermostatic radiator valves.
▶ Turn down room thermostat.
▶ 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.
▶ Check clock setting and adjust
▶ Disconnect boiler supply, wait a few seconds then
reconnect.
▶ Ask your installer to reset the blue light
▶ Check setting and adjust
▶ Bleed radiators and re-pressurise the heating system
▶ Re-pressurise the system, refer to page 12
▶ Check setting and adjust
Fault Finding
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