User`s manual

16
B003
SHUTDOWN DUE TO INSUFFICIENT
WATER CIRCULATION
This anomaly is indicated by the red “D” L.E.D.
One of the possible causes of this shutdown situation
could be the lack of water in the boiler or water
circulation failure in the primary heating circuit.
Check the system pressure on the pressure gauge
“O” and, if it is less than 0.5 bar, consult your installer
for checking and refilling the system.
Then reset the unit by turning the boiler off and then
back on with the On/Off button “L”.
If this situation persists, contact one of our Authorised
Service Centres.
O
D
I
L
FLUE TEST FEATURE
(only for authorised personnel)
The “C” Summer/Winter/Flue Test selector knob can be
set to <> to bypass temperature adjustment on the
heating circuit for the purpose of analysing the fumes
produced by combustion.
To access this mode, open a water tap or taps so that the
flow rate is no less than 8 litres per minute.
Then press the “C” selector knob in and turn it from <> or <> to
the <>.
WARNING!
The flue test feature eliminates the slow-light feature.
This mode must only be selected by a qualified service engineer.
C