12
MAINTENANCE
6 720 803 600 (2012/06)
4.2 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 B Contact your gas supplier.
Condensate outlet blocked
B If it is safe to do so, check your condensate pipe
outlet for blockages, such as ice or foreign
objects.
Flue blocked
B 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
B Increase thermostatic radiator valve setting(s)
Temperature control for central heating
flow on boiler set too low
B Increase central heating flow temperature control
setting
Air trapped in heating system
B Bleed radiators and recharge heating system
Low system water pressure
B Re-pressurise the system, refer to pages 10
Low temperature setting on the boiler
controls
B Increase settings on boiler controls
Desired room temperature too
high
Radiators are too hot B Turn down thermostatic radiator valves/room
thermostat
B Reduce central heating temperature by turning
down the Central Heating control on boiler
Heating stays on for too long Clock is incorrectly set B Check setting and adjust
ON/OFF Indicator is not
illuminated
Momentary power failure B Disconnect boiler supply, wait a few seconds then
reconnect.
Hot water temperature too low Temperature set too low on boiler
controls
B Check setting and adjust
Water flow at tap too high
B Reduce flow rate at tap
Air trapped in heating system
B Bleed radiators and recharge heating system
Low system water pressure
B Re-pressurise the system, refer to pages 10
Hot water temperature too high Temperature set too high on boiler
controls
B Check setting and adjust
Water flow at tap too low
B Increase flow rate at tap
Table 4 Fault finding
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