Glow-worm Ultracom hxi - Manual (Page 17)

0020127403 - 01/11 - Glow-worm
ANY ASSISTANCE ?
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9.2 Appliance fails to light
The LCD will display a flashing 'F' and
code number,
• To restart the boiler, press the reset
button, see chapter "How to use your
appliance ► Overview".
If any fault persists, and your appliance still
does not work, leave it switched off and
contact your competent person.
Like all condensing boilers
it will produce a plume of
condensation from the flue
terminal in cool weather.
This is due to the high
efficiency and hence low flue
gas temperature of the boiler.
It is normal and not a fault
indication.
10 Appliance safety devices
10.1 Boiler Shutdown
The boiler software is designed to
recognise the potential for an overheat
lockout and will shutdown before this
happens.
• To restart the boiler, press the reset
button, see chapter "How to use your
appliance ► Overview".
CODE DESCRIPTION POSSIBLE CAUSES
F1 Boiler has attempted to
light 5 times and failed on
all occassions
Press the reset button.
If the fault persists, contact your Installation/Servicing
company or Glow-worm
F5 Overheat Boiler has overheated - allow to cool then press reset button
If the boiler fails to resume normal
operation and all external controls are
calling for heat, then call your Installation/
Servicing company or Glow-worm service.
10.2 Protecting against frost
Appliance Protecion
In case of the risk of frost:
• Make sure that the electrical and gas
supply to the appliance is turned on.
• For an absence of several days, you
can leave the appliance to run normally.
The appliance has a built in frost
protection device that protects the boiler
from freezing. With the gas and electric
supplies ON and irrespective of any room
thermostat setting, the frost protection
device will operate the pump when the
temperature of the boiler water falls
below 8 O C. A timer is used so that the
temperature can be checked periodically.
After 10 minutes the pump will be stopped
if the temperature is higher than 10 O C or
has already reached 35 O C. The burner
will activate if the boiler temperature
does not reach 10 O C after 30 minutes or
at any time if the temperature drops to
5 O C. The burner will switch off when the
temperature reaches 35 O C.
The appliance always has frost protection
active when the power and gas supply are
on.