Fault Finding - Worcester Greenstar 25i ErP 47-406-60 User Instructions

Fault finding

7 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
EA fault code flashing on
display
Desired room temperature is
not reached
Desired room temperature
too high
Radiators are too hot
Heating stays on for too long Clock is incorrectly set
No blue Operation/Fault
Indicator demand
Hot water temperature too
low
Hot water temperature too
high
Table 6 Fault finding
24
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 appliance set too low
Low temperature setting on the room
thermostat
Air trapped in heating system
Low system water pressure
Thermostatic radiator valves are set to high ▶ Turn down thermostatic radiator valves.
Room thermostat is set too high
Temperature control on appliance set too
high
Momentary power failure
Heat requirement demand operation light
has been deactivated
Temperature set too low on appliance
controls
Water flow at tap too high
Air trapped in heating system
Low system water pressure
Temperature set too high on appliance
controls
Water flow at tap too low
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.
▶ Increase setting on the room thermostat.
▶ Bleed radiators and re-pressurise the heating
system.
▶ Re-pressurise the system, refer to page 19.
▶ 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 appliance supply, wait a few seconds
then reconnect.
▶ Ask your installer to reactivate the blue light
▶ Check setting and adjust.
▶ Reduce flow rate at tap.
▶ Bleed radiators and re-pressurise the heating
system.
▶ Re-pressurise the system, refer to page 19.
▶ Check setting and adjust.
▶ Increase flow rate at tap.
Greenstar i
ErP
– 6 720 806 946 (2015/03)